Re: [DUG]: Delphi 8 etc
Tracey Maule wrote: Q: Why do my emails come through as blank when i reply to an existing DUG mail?? The message has headers formatted for an HTML message, but no body. Either your client is mangling them (possible) or they're getting chewed up by the listserv. Have a look at the details of the message in your 'sent' folder and see if there's anything odd in the headers compared to what you see in the version you got back. Might be something to do with the spam check, for example. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Basic question on custom components
[EMAIL PROTECTED] wrote: snip From an instance of my new component (TUVTable, dropped on the form), I need to call methods of the instance of the TUVObject component on my form. In TUVTable.pas I could add a uses clause, MainUnit, and then call MainUnit.UVObject1.method - so allowing communication between the 2 component instances. This is silly as if the user of my component has named their unit something other than MainUnit, then it won't work. Stacey's answer is the normal method, and it's a good one. It basically creates a link between the two components, which is much more generic than linking to the other object statically or trying to find it at runtime. Same as linking a TDBGrid to a TDataSource. One other option, although it's not a terribly good one, is to iterate the components on the form and find the one with the correct type. TObject.TypeName or something similar will work for that. Probably better to do it the classic way though : -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Copy protection/program registration
Kurt at DBC wrote: Ross Levis wrote: impossible anyway. It should be unique on every PC unless a user has illegally installed Windows on multiple PC's. Not particularly helpful, but ISTR that all you need is a windows license for each installation, rather than use the exact cd for each, this'd probably bite you in a corporate. You need to own a license for each computer using it, but there's not much stopping you from using the same key to install every machine in the office. Or, more usually, ghosting an install. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Copy protection/program registration
Leigh Wanstead wrote: I think there is no need to pay too much attention on this. Just look at how Borland did for Delphi product series. There is always someone can hack the application if he/she consider it is worth it. Better put that energy on improving software and offer a good support. I agree. A very simple protection is, ultimately, just as effective as spending hundreds of hours, or thousands of dollars, on it. If someone wants to crack it they will, etc. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Copy protection/program registration
vss wrote: I have come across one program called PicBasic which uses some PC Specific information that you send back to them and they send you a key. What ever the software they use for the protection, its pretty good. I actually own the app. but was interested to see how strong it was, and beleive me, after about 2hrs of constantly hacking and playing, i could not crack itso whatever it is, its great. I wanted to use the software for a project I have just finished, but the problem is that I cant make it PC specific. PC-specific isn't terribly difficult, but is a pain in the butt when you want to upgrade your machine and end up with a whole bunch of things that don't work anymore. That said... you can get various information about the PC... motherboard ID, BIOS checksum, hard drive serials, NIC addresses, etc. and munge them to generate a host string, then generate a complementary key which you can use to manipulate that string back to a decryption key to decode sections of your exe. Every time the program runs it then checks the hardware, generates the host string, uses the key to create a decryption key and decodes the locked code blocks. It's an idea anyway. Problem with it is that any slight change in your configuration renders the program useless, or at least crippled. It's fairly strong though. If you used a reasonably strong crypto algorithm then it'd be extremely difficult to crack without at least one sample host/key pair to find the decryption key. Just a theory. Feel free to run with it : Oh, and if you /are/ going to go with machine-specific copy protection, be nice and provide a way for people who register to easily update keys when they change hardware. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Copy protection/program registration
Leigh Wanstead wrote: It's fairly strong though. If you used a reasonably strong crypto algorithm then it'd be extremely difficult to crack without at least one sample host/key pair to find the decryption key. No, it is not. Someone can use winice to debug to the point where you call checking logic and just simply patch the executable with a jmp assembler code to disable the logic. So strong crpyto will not work, no matter how strong it is. That is just the basic lesson for training a skilled hacker. The idea is that the program doesn't have a copy of the decryption key. That key is constructed using the host string (hashed from the computer's signature data) and the registration key provided when the software is registered. So if you don't have a host/key pair, no amount of debugging is going to get past the encryption. And no, you can't just patch the checks, since important pieces of code are encrypted. IE: the bits that do the stuff that is locked out of the shareware version, for example. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Copy protection/program registration
Leigh Wanstead wrote: SoftICE for Windows can debug any windows application. strace is pretty good to print out any Linux application's api use. So there is nothing you can hide from it. Windows assmebler debugging is easier than DOS, as win api is documented. Unless you can play a game with the hacker using a virtual stack, someone will determine enough to know everything. A competent deprotection specialist (yeah, flowery term, but 'hacker' is inaccurate and over-used) will eventually break anything you, I, or indeed anyone comes up with. This has been proven time and time again. Still fun to think about how to make it difficult for them, even if I never actually implement any of it : -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: bpl files
[EMAIL PROTECTED] wrote: Well, the Delphi\Bin might well be an option, since it will meet your first criteria if Delphi has its Start In directory set to Delphi\Bin which IIRC it does by default... ;-) Actually I think I missed a step... I /think/ it checks the application's home directory as well, which is fine for Delphi... but totally not for programs written in Delphi. Try running a program that expects a BPL in the Delphi\Bin dir from outside of Delphi. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Copy protection/program registration
Ross Levis wrote: Hi Stephen You could just roll your own based on things like hard drive serial no., n/w card mac address etc. I'll do that. The only problem with this, and any copy protection for downloaded programs, is the hardware upgrade issue. Basically most methods license the software for use on a specific computer, and if the computer is upgraded and one of the key items is changed (new network card, or new hard drive, whatever), the software no longer works. How about using a number of 'hardware id' methods, hash each separately with something like MD5 (except not that... but a good strong hash algo) and test them against the license for that machine. If only one of them fails - because of a new HD, or whatever - warn the user and give them some way to update their registration. If more than one don't match, it might be safe to assume it's been copied. It's not a silver bullet, but it can save lots of aggravation for your users in the long run. Imagine how you'd feel if you'd shelled out (for example) $100 on registering a program, use it a lot, then find that when you upgrade to a gigabit ethernet card the program suddenly stops working. Moral: copy protection is a more complex topic than it first appears. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: bpl files
[EMAIL PROTECTED] wrote: Indeed, but the original question was where does Delphi expect to find BPLs, not where does my-application-written-in-Delphi expect to find BPLs. ;-) I've found that a lot of people will phrase Where does my application written in Delphi... as Where does Delphi Personally, for BCB, I have a networked drive where I store my BPLs, includes and so on, and it's on my path. That way they can be found both by BCB and applications written in BCB. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: bpl files
Paul Lowman wrote: Hi all Anyone know where Delphi expects to find .bpl files (apart form the system folder) and can it be set? Same as a regular DLL... in the system search path. That is: 1) current directory 2) dirs in the PATH environment var 3) %WINDIR%\System32 And Myles: the Delphi\Bin dir isn't an option, unless it's in the path. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Schedule Tasks
vss wrote: um...never heard of Chron. So no. ;-) CRON is the *nix scheduler daemon. It has been around for quite a while, and is very configurable... once you understand the syntax : If you have Perl installed, you could try CRONw on sourceforge: http://cronw.sf.net or http://sf.net/projects/cronw/ It runs as a service, but I don't know how well ported it is. There's also nnCron LITE: http://www.nncron.ru And, finally, on most versions of Windows there's the Scheduled Tasks system folder, accessible from the explorer or start menu. It can be a bit touchy though... doesn't want to schedule tasks for me because I don't use login passwords for my main account (yeah, I know :) -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Schedule Tasks
Jeremy Coulter wrote: Not all versions of windows has the scheduler in it, and some sys admins don't install it, and so its just easier to do it your self.like most things :( We have actaully found windows 2000 can corrupt the schedule settings too. We can repeat this in about 80% of our servers, of which there are 130 of them. So it's a big problem at times. MS are like, oh how strange or if you read between the lines Oh bugger not another one !! ...hehehe If you're running WinXP, you can do simple scheduling using the 'at' command... but something like nnCron Lite is far more versatile. Having said that... I did write a scheduler myself once. The timing algorithm was fun : -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Groupboxes
Alistair George wrote: Hi all. I have two groupboxes. I want to altop the inside (contained) one, but the difference between the borders is too much at the top. How do I reduce this spacing? Anchors of the contained are top and sides. Or am I using the wrong component? You can simulate the outer group box with a panel and a label, and the client area with another panel. Set the border on the internal panel to what you like and put all the controls in there. Or just one panel with a bevel perhaps? -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Tag
gajo wrote: snip You get the idea. And here comes the problem: I cannot get the CI's Left or any other property, because I cannot access it. Like this: procedure TForm1.Image1MouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer); begin with Sender do begin if (ClassType = TImage) then begin newX := X; newY := Y end else if (ClassType = TPeasants) then begin newX := X + Sender.Left; // ERROR newY := Y + Sender.Top; // ERROR end end end; TObject is the root of the class hierarchy, and it doesn't know about the properties you're trying to access. You'll have to cast the object reference 'Sender' to an appropriate form - one that knows about the Tag and Position properties, or one that has ClientToScreen for example. Casting to TControl should work in all cases. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Size of the mouse pointer
gajo wrote: The mouse pointer is always the same size, 32x32 I think. Is there a way to create a much larger one? I actually want to create a circle with a cross in it, so that it would show the range of effect of a mouse-click on some objects. The size would be about 80x80 I don't think so. I recently had to do a stamp-pad tool for a paint program and what with variable-sized stamps (user selectable) and different zoom levels I often had stamps that were much larger than the cursor, and in true color at that. Since I had a ready canvas I just pre-drew the stamps to a TBitmap and then drew them in the right place on the canvas whenever I got a mouse message. Was slow for very large stamps, but worked fine otherwise. Is this an option for you? -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Size of the mouse pointer
gajo wrote: Is this an option for you? Yeah sure, I just thought it could be done, cause it would make my program look nicer :) Well, if you find out how to do it... share : -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Single , double mouse click
Alistair George wrote: Hello Paul, Ohhps dont forget if u use my code to reset the dblclck variable! Or better, have the OnDoubleClick stop the timer. No need for extra vars :) -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Dump the output of a DOS command into a Memo box
gajo wrote: How can I execute a DOS command, and then put the output into a Memo object? For example,if I type dir in an EditBox, then the Memo should show me the contents of the CurrentPath. There used to be an example app (came with Builder 4 at least) which did that using pipes... called WinTools or something similar. Grep for CreatePipe in the examples dir. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: SSH?
Rohit Gupta wrote: Pardon my ignorance here... but what is SSH ? any relation to SSL ? Yeah... Secure SHell. It runs over Secure Socket Layer... which is what I assume Chris meant. Short of using PuTTY to proxy a connection for you (which works fine for single-connection stuff like HTTP, remote control with VNC, connections to an SQL server, etc.) he'll have to look into one of the SSL libraries out there. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: [DUG-OFF-TOPIC]: octane
Leigh Wanstead wrote: C is really old language compare to java, .net. Given it a couple of years, the speed of java, .net will be fine. Quite seriously, no. A well-written C program will outperform a well-written Java or C#/.NET program today, tomorrow, and for the forseeable future. This will only change if/when hardware becomes available to directly support CIL or java bytecode... the mythical Java Processor for example. By that view, I think Sun/Microsoft do a good job. Sun has definitely done a damn fine job. Microsoft I'm reserving judgement on. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: octane
Phil Scadden wrote: Short answer: YES! My take on this situation is as follows: 1. Microsoft has already been bitten once having to support multiple architectures (see Alpha and MIPS), and to avoid this problem in the future (see x86-64 and IA-64) they hace created .NET as a platform neutral environment. Unless .NET can run a great deal faster than Java, then this is a very risky strategy. A port of Linux to x86-64/IA-64 would allow developers to create native applications (open office) that would run rings around .NET applications compiled to CLR. There's no reason to expect that CIL code /can't/ run at the same speed as Java bytecode. They're the same basic concept, just a different implementation. Where it might fall down is in the implementation of the VM and the crap added to CIL to support various look how much better than Java we are features. Oh, and Java isn't 'native' at all, just in case you were confused about that. Where Linux wins is that a huge amount of source code is available to allow you to recompile your favorite applications on a new platform, without having to wait for the author to release a platform-specific variant. If the source /isn't/ available, you still have to wait. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: octane
Paul Mckenzie wrote: Windows initially sat on top of DOS... The way I see it - .NET will eventually, somehow, become the platform itself (maybe 64-bit). At the moment .NET is primarily a Java challenger for the Windows platform... and others, once the various non-MS CIL/CLR implementations out there (Mono for example) mature. After that... who knows? Certainly there will still be an underlying platform to program against, but Microsoft could well limit that to drivers, if the whim took them. I think there'd be a fair outcry if they did so however. Personally, I have no interest in .NET as yet. If I have to use it I will, but until then... C++ Builder suits me just fine : -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Slow email / xtra
Robert martin wrote: I wonder if it is related to any traffic travelling over their servers though. I just checked the xtra site they say. snip The fact that they are publishing the problem means it must be major. Our experiance with Jetstream is that they wont admit a problem but mysteriously 30mins later it fixes itself :). I know Jetstream isnt xtra but there is a rather close association. I believe that Telecom reabsorbed Xtra, so yeah, Jetstream and Xtra /are/ the same company... or parts of at least. Xtra is just the ISP portion of the Telecom networking division, or something along those lines anyway. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: octane
Phil Scadden wrote: Windows initially sat on top of DOS... Initially. ?? Still does :-) Win9x and WinMe do, yes. And they're both virtually retired by Microsoft. The WinNT line hasn't had anything much to do with DOS, except for the WoW core which allows DOS programs to run in a window. The way I see it - .NET will eventually, somehow, become the platform itself (maybe 64-bit). As a bytecode interpreter? So I am going to write my services/databases etc for a virtual machine? Something other than assembler has to hold this thing together. I guess we could see the native OS as a collection of web services (but boy, that adds a lot of layers) and have a mechanism for writing native web services. There are already plenty of layers. The HAL, the APIs, etc. What's one more? : Realistically though, I doubt anyone (except MAYBE Microsoft) really wants to see it go that way. Programming on the metal is just too much a part of the development culture. The day Microsoft tries to lock us into .NET is the day the hacker community starts finding ways around it. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: WinApi Encryption
Rohit Gupta wrote: Ah but Peter is biased and overly critical (like Max) :-) No, Peter is a professional cryptanalist. I decided to use PKZIP professional version - much cheaper than my time of coding it and I cant be blamed for the security part of it.. :-) You don't have to code security yourself. In fact, it's strongly advised by most (if not all) crypto people that you don't. Get CryptLib or something similar and use AES, or whatever strong algorithm is suitable for your application. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: WinApi Encryption
Rohit Gupta wrote: Nicholas, over the years many have made similar remarks (including Peter Gutmann), so far I havent seen any proof of anyone cracking it anyway - that standard encryption is always been regarded as basic. Check out the web site www.pkware.com, click on products then select Professional Editon with secure desktop. At $100 US, its cheap I just have to call the command-line version. It also saves me writing a decryptor at the other end. The pro version does have strong encryption, yes. The same encryption you can get for free in various crypto libs as it happens. The standard version's encryption isn't very strong, and can be cracked in a matter of minutes with a known-plaintext attack. Brute force takes a bit longer, of course. The alternative is to spend days just to download and try out various libs and appelets. Or a couple of hours investigating encryption algos and finding a lib that supports the one that's right for your purposes. All it takes is a little bit of research. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: WinApi Encryption
Nahum.Wild wrote: But if you spend more than $100 of your time investigating third party encryption libs then which is cheaper? Depends... a) how many hours is US$100 for you? b) will PKZip professional suit you /future/ encryption needs? c) if, by doing the research, you learn something about encryption... how much is that worth? Just my two cents worth. :o) Hmm... if 'a few hours' is worth more than US$100, then by extrapolation this email too you... what, a few seconds? : -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: ImageList images
Phil Middlemiss wrote: I have a form in a DLL that has an action list and an associated image list. When I use the actions on toolbar buttons (or anything else, I think) - the images don't appear. The DLL form has it's own TApplication even though it's loaded into the same memory space as the main app and I hade to take that into account to pass on the On Idle event to the DLL so that actions could update their status. But I can't seem to get the image list to show. Any ideas? The solution that worked for MDI forms in a DLL might work for you, if you're runtime-linking to the DLL. When you load the DLL, initialize by replacing the Application and Screen variables with the ones from the host application (sent as params to the init procedure). Save the old values and restore them before the DLL is unloaded. This lets MDI forms work from DLLs, and might solve the problem you're having. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Form size changing/scrolling?
Chris Veale wrote: Hi all. I have created a program that runs fine on desktop computers but when it is run on laptops the forms do something weird and the user now has to scroll them to see the full screen. the first form I display is only 400 x 200 pixels but no matter what resolution the laptop is set to the user has to scroll, even if its 1400 x 1080 resolution and the form is small in the center of the screen - without having a need (technically) to scroll. Can anyone suggest a solution to this? I've never come across this before. I've hit it recently, working in WinXP on some code that was developed on Win2K. For the most part the forms are ok, except where I used Anchors to pin controls to the right and/or bottom of the form. The problem turned out to be that the window framing is quite different on XP (using the default settings) than on Win2K, NT4, 98, etc. and the form stores the width and height of the form itself, not the client area. The core of the problem is that the relationship between form size and client area is variable not just between versions of windows, but between different appearance settings and themes on the same version. On Win98 you can mess it up by changing the size of the title bar, etc. The solution for me, after much messing around, was to stop using the Anchors property to position controls. Using aligned panels gave (mostly) the same effect, with some OnResize code to fix the rest. You might get away with using the form's BorderWidth and AutoSize properties to resize the form to fit the controls at runtime - in the form's OnShow method, toggle AutoSize on and off to have the form resize itself. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: SImple smtp agent
[EMAIL PROTECTED] wrote: Hi Neven I've just been down this track and used ICS - Internet Component Suite (Aka FPIETTE's Components). It's free :-) Here are some sites: http://www.overbyte.be http://www.rtfm.be/fpiette/indexuk.htm http://users.swing.be/francois.piette/indexuk.htm The one gotcha I found was that the component would regularly report back an error saying it wasn't ready, e.g. after sending one email and then wanting to send another. I spent ages trying to find the answer on google and ended up resorting to the following: If you can, do it with events. The ICS TSMTPClient component will tell you when the state changes. Of course in some cases this means having a separate window to do things in, but that can be good too... a nice way to provide feedback. If you need to do it synchronously, I believe there are various methods of the component that don't return until they succeed or fail. I haven't used them though. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Comparing Times
Sorry for the late reply - is it still the weekend if I haven't slept since yesterday morning? : Jeremy Coulter wrote: Hi All. It must be the weekend or something, but I have 2 times I need to do a comparison on. Basically I need to know this :- Time_A=06:59:69 Time_B=16:00:00 TimeOf_event=00:05:00 Ok, now, if I go :- If (TimeOf_event=Time_A) and (TimeOf_event=Time_B) then DoWhatEver; Problem IS, this needs to return TRUE because the time of the event has to be within a time frame. Infact, 16:00:00 is infact the START time of where the event must happen, and 06:59:59 is the FINISH time the event must happen before. This is rolling over a day, so the above will never return TRUE. Since 06:59:69 is numerically before 16:00:00, how about putting them into TDateTime objects with date values attached? That sorts out the problem of your 'end' being before your 'start'. Of course if this is a daily event, then yeah, it's probably better to go with the 'or' solution. Logically speaking it's the same as: if not ((TimeOf_event Time_A) and (TimeOf_event Time_B)) DoWhatever; ... which reads If event time not between finish and start, and is a bit more self-explanatory... especially if you change the names of Time_A and Time_B, which are a little confusing in this context. How about StartTime and EndTime? -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Kinda off topic
vss wrote: HI All. I had to go visit a site yesterday as they had a strange error. When I got there the had something like abcd note the 2 dbl quotes at the end. I thought, ah theres the problem. I took the quotes out, saved the data, but when I went to put them back in, I did Shift ' and nothing happend so I did it again and got ! did it again, same thing. Someone said they have seen this in Windows 2K before, but dont know how to fix it. Anyone else seen this and know how to turn it off?? It sounds like the text services input language feature. Several non-english languages use commonly accented characters, and this can be done in several ways. The most common is to use certain key sequences - such as Shift+' for umlauts. So when you type a double-quote, it queues it and waits for the next keypress. If that happens to be a character that can be accented appropriately, it emits a single character. If not, it emits the double quote and whatever other character you typed... in this case another double quote. Long story short... check out the input language settings in the control panel. On XP you can find it in the Regional and Language Options control panel, Languages tab, Text services and input languages. Should be something similar in Win2K. I don't know if it's possible to switch this off for specific cases in the VCL. You might try fooling with the ImeMode in your edit controls, but more likely you'll have to do something with the text services API. I'm guessing it'd be easier to tell the client to switch their text input language back to English. If they don't want to (and they may have reasons), then it's up to them to deal with the problems it causes. Incidentally, I did some transcription work from Maori earlier this year. We found a Maori input translation which used the ~ as an accent for putting macrons over vowels. We just switched input languages as necessary. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Some Ideas?
vss wrote: Hi All. snip Can anyone else suggest another alternative? other than Soap etc. as we cant really open ports up as the info is VERY sensitive. oh PS. the XML is also encrypted before it goes and decrypted on the client..BTW There are a number of middle-ware possibilities, but I think the option using the webserver is a good one. However, it's probably a good idea to just use a CGI rather than messing with COM. Write a little program to dump the requested data to a stream in any format you like - coded XML, proprietary binary format, whatever - then write it out to the console with the appropriate HTTP content headers. I've written WinCGI programs that send on-the-fly JPG images this way, and it works nicely. As an added bonus, you can shift the whole shooting match to Kylix if you feel the need, without having to worry about the fact that COM is a MicroSoft-specific paradigm. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Some Ideas?
vss wrote: Some bright spark (me) just remembered we have a Citrix Portal that uses a Javaclient and needs nothing installed on the client machine (other than what it itself installs). we use it for others stuff, so it might be OK for this too. So long as you have enough CPU grunt and bandwidth to support all the clients, it's a good option. At the least it'll defer the problem :) -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: disabling alt-tab or ctrl-esc
Moises Lopez wrote: hi, is there a way of disabling either one of this under Windows 2000? i already dropped the start button but the ctrl-esc key is still working. You can disable/filter most key combinations using a low-level keyboard hook. The exception is Ctrl-Alt-Del, which I believe is handled by windows before the low-level keyboard hook chain is called. There's a few examples around of how to write something like this. If you want to stop Ctrl-Alt-Del as well, you have to install a keyboard filter driver. I have no idea how, but apparently it's explained in the Windows DDK. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Hotmail Email Viewer
Ben none wrote: Does anyone know how to build a email viewer which views email from a hotmail account in delphi? I kinda figure that there is possibly alot of encryption with hotmail so its possibly better to read from a isp email account instead. Actually HotMail is HTTP-based, and delivers data in an XML format. I can't really tell you much more than that, since I only found that much by accident while browsing some sniffed packets. Oh, and it's all in plain-text. No compression, no HTTPS, etc. Is it better or easier for me to read from a isp email account? It's definitely easier to use POP3, since at least that is a) documented and b) standard. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
[DUG]: How to stop TDBCtrlGrid wrapping
I want to use a TDBCtrlGrid for a form I'm designing, but the wrapping behavior is making things awkward. I really need for Tab to exit the control once it reaches the end of the last record, but instead it wraps around to the first control in the last record's panel. Same for Shift-Tab at the first control of the first record. I know I could fix this by creating a descendant of TDBCtrlGrid, but that's really overkill for this situation. Environment is BCB4, so any solution that works for the Delphi4 should be applicable here too. Any help appreciated. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
[DUG]: Virus Alert: Someone has a BugBear...
Someone on the list is infected with a version of the BugBear virus. The latest message I've had claims to come from Jason Coley, but I think BugBear fakes its message headers so who knows? The IP path on the latest message, from the message headers: [200.57.141.30] smtp.telnor.net [200.76.231.67] red-corpb38ADSL-67.telnor.net In fact smtp.telnor.net resolves to a different address, and the given address resolves to nlproxy00.telnor.net, which casts doubt on the whole thing. Possibly the latest BugBear is using open proxies for masking? Anyway, everyone on the list should do a virus scan ASAP. BugBear is NOT a nice worm. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: [Off topic] How to claim software source code exist beforePatent
Leigh Wanstead wrote: Hi Nicholas, Thank you for your suggestion. What will help if I put cvs(version control) data onto same cd? As that will give detail information about the time, reason to make a souce code change. The dated postmark on the envelope is legal proof, obtained from an independant and neutral authority (the post office), that your work existed at a specific date. The post office is a credible 'witness' since they are legally bound against misrepresentation of any form, and in theory have no bias towards any entity. Compared to this, the timestamps etc. in the CVS archive on the disk are NOT legally useful, since you could conceivably have altered them before writing them to the disk. In other words, anything you claim about when you created the work is suspect without independant verification. Example: You've been working on a project for 2 years before you get around to using the poor man's copyright method of mailing the source (without CVS) to yourself. A week later I get access to your CVS tree, copy it, alter the timestamps to before you started working, and mail myself a copy of the source with CVS tree. We go to court over ownership... and you win, because your postmark is older than mine. It's not necessarily so cut-n-dried, but that's the gist of it. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Path to Web Server
James Sugrue wrote: Does anyone know if there is an API call or similar to get the path (Win32) of the webserver installed on a machine? There are various connection monitoring programs, especially personal firewalls, that can figure out which program a socket belongs to... so it must be possible. As to how... you got me : I suspect that there's a driver involved, although that's not necessarily the case. You might consider asking someone like the author of NetPeeker if they'll let you in on the secret. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Idle event
- Original Message - From: Alistair George [EMAIL PROTECTED] Sent: Wednesday, April 02, 2003 10:43 AM Subject: [DUG]: Idle event snip If anyone knows how to get OnIdle to work outside the Mainform PLEASE let me know. According to my documentation (BCB4, YMMV), OnIdle is an event of TApplication. In theory you can assign a handler to it from anywhere. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Registry entries under NT,XP
- Original Message - From: Corey Murtagh [EMAIL PROTECTED] Sent: Friday, March 28, 2003 2:12 PM Subject: Re: [DUG]: Registry entries under NT,XP snip Store user-specific settings ing HKEY_CURRENT_USER and globals in HKEY_LOCAL_MACHINE. That's pretty much the whole reason the registry is structured that way. oops... my bad. As other people have rightly pointed out, you have to have admin rights to play around in HKEY_LOCAL_MACHINE. Option the second: use a config file for global settings. Quaint, maybe, but YOU control it. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Indy and Norton Anti Virus
- Original Message - From: Matt Dee [EMAIL PROTECTED] Sent: Wednesday, March 19, 2003 3:34 PM Subject: [DUG]: Indy and Norton Anti Virus For some reason any email sent via Indy's SMTP client gets 'cached' by Norton until the sending progam has been closed. Other email clients work fine, and I've used this component (TidSMTP) before with Norton and had no problems. Anyone know anything about this problem? Cheers, Matt. (I simplified the code down to: idSMTP1.Connect; idSMTP1.Send( idMessage1 ); Wild guess time... are you disconnecting the component after the send is complete? Quite possibly Norton is waiting for the session to close before forwarding the message(s) on to the real email server. If you don't implicitly close the session by disconnecting, then it will likely stay open until the application exits. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: PostMessage
- Original Message - From: Neven MacEwan [EMAIL PROTECTED] To: Multiple recipients of list delphi [EMAIL PROTECTED] Sent: Tuesday, March 18, 2003 10:28 PM Subject: [DUG]: PostMessage Hi all In my app I have a whole lot of forms which are embedded in a page control of the 'Main Form' If one one these forms wants to notify all other forms in the app of a change, what is the best way to do it? Iv'e tried PostMessage(HWND_BROADCAST, WM_APPDATACHANGE, 0, 0); but none of the other forms seem to get this message, is this because I really only have 1 form in my app? From the Platform SDK: HWND_BROADCAST - The message is posted to all top-level windows in the system, including disabled or invisible unowned windows, overlapped windows, and pop-up windows. The message is not posted to child windows. I would assume that your windows, embedded as they are, do not qualify as 'top-level' windows. I'm a little hazy about exactly which windows DO qualify, but I assume they're all those that have a null parent. However, since the message gets sent to ALL top-level windows, not just those in your application, it's likely to be of little use to you. You might want to consider writing a method or message handler for the main form that forwards the message on to each of the embedded windows. There are probably other ways to handle it, but it depends on your implementation I guess. Message forwarding via the main form is the simplest method I can think of. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Help - I need Help!
- Original Message - From: Alistair George [EMAIL PROTECTED] Sent: Tuesday, March 04, 2003 1:31 PM Subject: [DUG]: Help - I need Help! Hi all. Can anyone point me in the direction of a BMP icon same as BIHELP icon in Windows. You can create one yourself using the Marlett font. It contains most of the symbols used for standard system buttons, including minimize, maximize, restore, close, help, combo, etc. You might want to try making a large bitmap (say 64x64), font size 36 or so, then shrink it to antialias the symbol. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: fileopenmode
- Original Message - From: Andreas Toth [EMAIL PROTECTED] Sent: Tuesday, February 04, 2003 1:41 PM Subject: RE: [DUG]: fileopenmode For your information, the system doesn't let me copy this file (using Explorer) under Windows 2000 either. I would say the system has placed an exclusive lock on it. I don't think there's much you can do to access this file short of booting up under Linux and mount the partition containing the locked file(s) and copy it that way. Another option would be to Ghost the drive and use Ghost Explorer to get access to the file... The Backup program they're using in WinXP gets around the problem of locked files by using the Volume Shadow Copy Service. I haven't found anything yet about the API for it, but from the various blurbs I've seen so far it looks like a useful tool. Unfortunately I have no information on how much HD space it takes to make a shadow copy, or what the API is, or anything else. Might be worth investigating though. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Disable Floppy in Registry
- Original Message - From: Jeremy Coulter [EMAIL PROTECTED] Sent: Monday, February 03, 2003 7:40 AM Subject: RE: [DUG]: Disable Floppy in Registry Thanks for that Dave. I looked at the registry, but I don't have about 98% of these entries in my registry unfortunitly. My susspicoin is tho, the NoDrives=dword:0100 is the line that will do it. I will have a look at my machine at work, and see if it has some of these entries. Here's something from one of M$'s books (sample chapter online at http://www.microsoft.com/mspress/books/sampchap/6232a.asp ): Hiding drive letters in Windows XP doesn't prevent users from accessing those drives through other means, including at the MS-DOS command prompt. This setting hides only those drives in Windows Explorer, the common dialog boxes, and so on. Thus, you can't rely on this as a security measure. I think to properly disable a drive in Windows of any form you'll have to figure out how the Device Manager disables hardware. The user can still enable it through the Device Manager, but they have to know that. After some testing on WinXP, it seems as if there is no single value change that will disable the drive ala the Device Manager. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Disable Floppy in Registry
- Original Message - From: Jeremy Coulter [EMAIL PROTECTED] Sent: Monday, February 03, 2003 8:53 AM Subject: RE: [DUG]: Disable Floppy in Registry snip They want an app. That will read the floppy, but only in that app. I have not felt too comfortable about this project. Might just say nah, not interested :-) So they want to disable the floppy drive for anything other than your app? Not simple. About the easiest way (and it's not so easy, I assure you) I can think of is to hook certain APIs and check for applications targetting the floppy drive. There are various SDKs available for doing system-wide API hooks, but they're not free... at least US$499 not free. There's an article on API hooking, with a variety of handy links, here: http://www.internals.com/articles/apispy/apispy.htm hth. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Patch Maker
Color me interested :) Especially interested in a binary distribution, since I don't use Delphi. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Disable Floppy in Registry
Ok, so now I get to tell myself how wrong I am. One of the links in that article was to a library one of the M$ research guys created, called 'detours'. I grabbed it and got it to build under BCB4, and it seems to work fine under WinXP. It apparently doesn't work at all under Win9x/Me, so if that's one of your target environments then this won't help much. Detours works quite simply for the current process, but for other processes - new or existing - you have to do some extra work. It does provide routines for doing it, but they're a touch more involved. You might want to check out http://www.madshi.net - he has some reasonably-priced (free for non-commercial use) stuff that implements API hooking on most Win32 platforms, and it's all Delphi. Might be the solution you need if you want to go through hooking APIs. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: fileopenmode
- Original Message - From: Alistair George [EMAIL PROTECTED] Sent: Friday, January 31, 2003 1:35 PM Subject: [DUG]: fileopenmode Hi all. Using NT/XP and trying to do a backup, there is a fileopen error even though I have defined the following: fileopenmode:=fmOpenRead or fmShareDenyNone; Is there any way around this?? The share mode affects the rights that other programs have when they try to open the file AFTER you do. If another program, or the system, already has the file open in exclusive mode then you can't do much about that. David's solution is about the best. Making a copy of the file is about the simplest way to get at the data. Copy it, read the copy into your backup with the same details (filename, attribs, etc) as the original, then kill the copy. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: API to access phisical memory
- Original Message - From: Dedy Darmayanto Sent: Monday, January 27, 2003 2:10 PM Subject: [DUG]: API to access phisical memory Hi, I've written EXE ini D6 that access phisical memory at $F until $F. When it run on win98 is Ok, but on WinNT or Win2000 an error was occured. So to access phisical memory WinNT or Win2000 should be used API. Has anyone an example using API to access phisical memory. As far as I know there is no standard, approved way to do this, since no well-behaved program should ever access memory outside of the space allocated to it... except under special circumstances. I believe you need to write a driver to do this, since only Ring0 code can bypass the memory security used by WinNT/2K/XP. Why do you need access to the system ROM area? -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: C++ Name mangling
Hi Phil,
I'm sorry to be the bearer of bad tidings, but there's a lot more to lib
files than just coff/omf formatting. The object files inside need to be
linked against the correct runtime (probably MS's C++ RTL in this case),
etc. It's not just a matter of getting them in the right format for
Builder. The documentation's claim that the libs are 'usable by any win32
C/C++ application' is, unfortunately, bogus.
Generally if you have a lib-only distribution, it is specific to a
particular compiler... or at best, family of. You'll have to find something
else that does what you need, or beg the people that wrote it to produce a
DLL version or open the source to you so you can build the lib yourself.
On the other hand, if the lib is just an interface to a DLL, then you can
use implib.exe to create a borland-compatible library for it. The library
will handle run-time linking to the DLL, so you just have to have the DLL
somewhere the app can locate it at run - same dir as the exe, or installed
to the windows\system, or whatever.
HTH.
(And who knew I'd actually get to answer a question about MY favorite
compiler here? G)
- Original Message -
From: Phil Middlemiss [EMAIL PROTECTED]
To: Multiple recipients of list delphi [EMAIL PROTECTED]
Sent: Tuesday, January 07, 2003 11:52 AM
Subject: Re: [DUG]: C++ Name mangling
Max,
while trying that, I discovered that the lib file that was generated by
coff2omf resulted in a 1kb file from a 62kb file so it obviously didn't
work. So, then using tlib (the borland equivalent of MS's library utility)
I
tried to examine the .lib file. But tlib says that there is a bad header
in
the lib file which I am assuming is just a compatibility issue.
The documentation for the lib files says that they should be usable by any
win32 C/C++ application. So I'm thinking there must just be a switch or
directive to somehow get C++Builder to use it properly. The header for the
lib file has the routine defined as:
extern C {
extern int __cdecl mobileCreateConnection(LPTHIS_CONNECTION connection);
}
Regards,
Phil.
--
Corey Murtagh
The Electric Monk
Quidquid latine dictum sit, altum viditur.
---
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Re: [DUG]: Displaying text.
- Original Message - From: ColinMina To: Multiple recipients of list delphi Sent: Thursday, December 19, 2002 4:32 PM Subject: [DUG]: Displaying text. Hi folks, Some help please. I need to create a text area on a form into which I can write characters received from a com port. Getting the characters is not a problem I can put them intoan edit box but it doesn't suit because it fills up to the point where I can't see them any more. I figured it would be easiest toput a memo box on and use that but obviously I dont know what I doing. I don't mind how it's done butpreferably the characters would just keep scrolling in at the bottom of the text, and overflow intoanother line at say 80 chars. cr and lf would do their thing. Maybe tell me how to (optionally) clear the text area as well. There's a terminal component in the ICS distribution that would probably be better suited, but if you don't mind the peculiarities of the memo then try it with word-wrap enabled and just a vertical scroll bar. --Corey MurtaghThe Electric Monk"Quidquid latine dictum sit, altum viditur."
Re: [DUG]: Suppressing exception popups in certain parts of code.
- Original Message - From: Andrew Thomas [EMAIL PROTECTED] Sent: Wednesday, December 11, 2002 4:00 PM Subject: RE: [DUG]: Suppressing exception popups in certain parts of code. That still causes the annoying 'Exception' popup though. :( I thought maybe there was a compiler directive or something you could use. From what little I've been able to find out/deduce about the debugger's exception handling, it hooks at a very low level. This means that apart from session-wide debugger settings, it's probably not possible to modify which exceptions the debugger reports. Would be nice if there were. Maybe a feature request to Borland? :) -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]:changing compile conditions at runtime...
- Original Message - From: Chris Veale [EMAIL PROTECTED] Sent: Friday, December 06, 2002 11:33 AM Subject: [DUG]:changing compile conditions at runtime... Hi I want to implement something like a passcode that when entered allows the user to do something different than a user without that passcode. I have all the functionality already in the code with compile conditions but from all the help Ive looked through, I cant change this on the fly - it takes a full recompile. Is there any way of allowing this change at runtime using compile conditions or am I going to have to rebuild the functionality with if statements? The compile-time conditions alter the code that is produced, so any condition that isn't met effectively comments out the code it encloses. If you want to offer variable functionality dependant on a code, user level, etc. then you'll have to write the logic for it into your code. How to go about it depends on a variety of things, including how much difference there is between one level and another. If you have only two states that differ only in a few lines of code, then a conditional statement is probably sufficient. For a more complex difference (additions to the interface, completely new functionality, etc), and if you use a reasonably OO design, you could derive a higher-functionality object from the standard interface, add whatever you need, then instanciate the one that fits the current user level. Remember KISS though. If you don't need to change much, do it the simplest way you can - which usually means conditionals in your code. Final thought: if you want the REALLY complex way, how about implementing the enhanced functionality in a BPL, and only distribute that to people who need it. Same as deriving from a common object, but with added security in that people who don't have the BPL can't get access to the extra functions, no matter how they try to hack the program. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: On Click event not happening
- Original Message - From: Mark Howard [EMAIL PROTECTED] To: Multiple recipients of list delphi [EMAIL PROTECTED] Sent: Thursday, December 05, 2002 3:55 PM Subject: Re: [DUG]: On Click event not happening Hi Further to this and my last post, I have just discovered that if I put a breakpoint on ANY code anywhere it gets disabled on run and does not capture the flow. I must have inadvertently set some global switch that turns this facility off. (This must be easier!) One thought... Builder occaisionally gets confused about which open files actually belong to the project. Even though it compiles and so forth without problem, it doesn't recognize the file as being debug source. Normally it has the full path to the file in the edit window's title bar, rather than just the filename. Try closing all open files in the editor window, check your build options for debug settings, reload Delphi and do a full build. It may or may not fix the problem. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Sending a record to a C++ DLL
- Original Message -
From:
Phil Middlemiss
Sent: Monday, November 18, 2002 3:32
PM
Subject: [DUG]: Sending a record to a C++
DLL
Hi all,
how do I determine which alignment to choose for
a record that will be sent to a DLL compiled from C++ ? I have the source code
for a test app that uses the DLL but I don't know enough of C++ to work out
how to send a record to it. Here is a typical structure:
typedef struct
EscCoordinateTag{short Degree;short
Minute;float Second;} ESC_COORDINATE,
*LPESC_COORDINATE;
Some structures contain other structure types
also.
From what I understand of structure
alignment, it only pads the structure when a member would be placed somewhere
that isn't an even multiple of its own size, or the alignment value whichever is
smaller. So that structure should have
offsets 0, 2 and 4 for Degree, Minute and Second respectively and a size of 8
bytes.
Assuming structure alignment is
4:
struct SExample{
short foo;
int bar;
};
...will have a size of 8 bytes, with
offsets of 0 and 4 for foo and bar respectively.
Hope this helps.
--Corey MurtaghThe Electric Monk"Quidquid
latine dictum sit, altum viditur."
Re: [DUG]: Execute and wait
- Original Message - From: vss [EMAIL PROTECTED] Sent: Monday, November 11, 2002 3:07 PM Subject: [DUG]: Execute and wait Hi All. I have a bit of code that does an execute and waits for the app. to close. What I want to do is execute a game and know when its finished, BUT when I use my code, it starts to execute the app, but then it stops and returns an error code of zero which means its finished...BUT it never started. Your code looks basically ok. It's similar to code I've written before for similar purpose. Since the app you're trying to run isn't, can you confirm that CreateProcess() is returning a non-zero value? If not, check for whitespace in your application path that might be misinterpreted by CreateProcess() while it's searching for the exe name, and wrap the name in quotes if necessary. Also, your application may be failing to start because you haven't provided the correct current directory for it. You could do an ExtractFilePath(Path) into a string, then pass a PChar from the string as the lpCurrentDirectory parameter to CreateProcess(). Apart from that... can you give any more information? -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Best version control system?
- Original Message - From: [EMAIL PROTECTED] Sent: Monday, November 11, 2002 2:55 PM Subject: RE: [DUG]: Best version control system? Thanks for the comments. I'm having a play with FreeVCS and FTPVCS to see what they're like. I'll let you know **my opinion** of which is the best. Check out WinCVS as well. I've been using it (with BCB4) for a while now, and it does a reasonably good job of demystifying cvs. And since I use ssh tunnels (via putty) to access my cvs server outside of work, it's about secure as you could ask for :) You can find WinCVS at http://wincvs.org or http://cvsgui.sourceforge.net -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Version Control
- Original Message - From: Paul Mckenzie To: Multiple recipients of list delphi Sent: Monday, November 04, 2002 8:53 AM Subject: [DUG]: Version Control This is possibly a bit off-topic ! Having just donemajor release we are re-looking at our version control... Is there a better way of maintaining development and production source code ? What we are doing is Branching and putting any "Production" bug-fixes into both branches and "Development" stuff into the Development Branch only. There isscope for errors (leaving out a bug-fix orputting in two different bug-fixes, etc) Any ideas, thoughts, what we do's, what we should do's much appreciated... I've been using cvs for a while now (using WinCVS to simplify things) for my BCB source, and recently I've been investigating the Branch handling. It seems you can do all sorts of fun things with CVS like merge between branches, etc. In theory, although I haven't tried it, that means you can fork your source into any number of branches and mergechanges back into the main branch on a file-by-file or project-at-once basis. That means you don't have to manually replicate bugfixes... although you may have to manually solve merge conflicts that cvs isn't bright enough to do by itself. Ultimately though it still comes down to having a decent source documenting process for each branch. You need to track exactly what has been patched where so that you can later track missing bugfixes in the root branch. -- Corey MurtaghThe Electric Monk"Quidquid latine dictum sit, altum viditur."
Re: [DUG]: Icons .res file OR making the correct icon appear on the components bar
From memory (and this is playing with BCB a while ago) you include the resource file in the project when you build the package. The icon is loaded by Delphi (or BCB) when it opens the package, as opposed to other resources that are linked at runtime when you're not using run-time packages. I think. Your milage may vary : - Original Message - From: Alistair Grant George [EMAIL PROTECTED] To: Multiple recipients of list delphi [EMAIL PROTECTED] Sent: Saturday, October 19, 2002 2:27 PM Subject: [DUG]: Icons .res file OR making the correct icon appear on the components bar Hi all. Been down this track before but it has gone down the gurgler due to too many suds. Recall that to include the icon with a build new component it must have the same name in the image editor as the pas file eg TALISTAIR in capitalise. But say I install a package eg SuperCompress.dpk how is there a link between the package and the desired icon resource (.RES). (I know, it is no big deal but I like to see the various icons!!) Have tried everything I can think of but still end up with default. Al+ --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Canvas
- Original Message - From: vss [EMAIL PROTECTED] To: Multiple recipients of list delphi [EMAIL PROTECTED] Sent: Wednesday, October 09, 2002 10:43 AM yeah, that went thru my mind, but it seemed a bit of a manky way of doing itok well I will try it non the less. TWindowControl descendants have their own windows canvas, but paint boxes and other TGraphicControl descendants share the windows canvas of their parent. So anything you put into a TPaintBox (for example) will overwrite anything that you previously drew in another overlapping TPaintBox. The solution is to redraw the background to erase the existing text. If it's just a static color then fillrect is the solution, otherwise you'll have to redraw the background image that occupies the same rect as the text. Of course if the background is just a static color then the simplest thing to do is use a brush style of bsSolid with the appropriate brush color and use TCanvas.TextRect to write the text out. That will clear the rect and draw the text in one operation, which reduces flickering. It may not be elegant, but it's the way it is. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: IP addresses
- Original Message - From: Kevin Parker [EMAIL PROTECTED] Sent: Monday, August 26, 2002 9:45 PM Subject: [DUG]: IP addresses Hi all I have an app with an indy client and servers. The client polls server app's on every mc in a network. My problem is how do I get a list of all the currently routable IP addresses in the network? I need an answer for both static and dynamic IP address allocation. If all of the IP addresses are on the same subnet then you can send a UDP packet to the broadcast address. Anything on that subnet that is listening for the packet should reply, giving you a map of active clients. You may be able to broadcast a ping-type packet to find all machines, or you may have to write support for your own broadcast ping into the client. The problem with this method is that you generally (if the network's router is configured correctly) have to do it locally. This means that if your client apps have to be able to do it remotely then you'll have to have a local machine do it for them and maintain a list they can query. Another method, if you just need a list of servers, is to have each server contact a list holder on a static IP address when they start and periodically while they're running. If it's internal then you can make the period smaller - say 20 seconds for example. If a server misses more than one checkin then it can be removed from the list. This way you can tell not only if the computer is up, but also if the server is running or not. There are other options, some using lower level networking stuff that I'm not familiar with, but I guess it depends on what you're trying to achieve. The central server option is useful in that it reduces the number of packets that have to cross your internet gateway/router/whatever, but really it's most useful for internet clients. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Overriding and Inheriting Function Methods
- Original Message - From: Andreas Toth [EMAIL PROTECTED] Sent: Wednesday, August 21, 2002 3:17 PM Subject: RE: [DUG]: Overriding and Inheriting Function Methods I forgot to state that if I add the name of the function after inherited it works, but why? I would guess, without an in-depth knowledge of how Delphi's 'inherited' keyword works, that your original assumption about it always being a procedure call was close to the mark. Either that or it's doing something wierd with object/reference types behind your back... which is something I've always suspected Delphi of, to be honest. When you insert a 'inherited.method' call though it's treating 'inherited' as the class your subclass descends from, so it's a proper function/procedure call depending on the method. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Strange TTimer/ShowModal behaviour (kylix)
- Original Message - From: Mark Derricutt [EMAIL PROTECTED] To: Multiple recipients of list delphi [EMAIL PROTECTED] Sent: Tuesday, August 20, 2002 9:07 PM Subject: [DUG]: Strange TTimer/ShowModal behaviour (kylix) 'lo all, have a strange problem afflicting a kylix 2 application. Take a project with 2 forms, Form1 Form2, put a TTimer on Form1, and give it the following code: procedure TForm1.Timer1Timer(Sender: TObject); begin Form2.ShowModal; Caption := 'Boo'; end; Form2 displays, but shortly afterwards, about a second, Form1's caption is set to Boo, whilst the modal form is still displayed. Your timer will continue to tick after the ShowModal. The next time (and every time) the timer fires it will fail on ShowModal (because the form is already visible), and go on to set the caption of Form1. I'd suggest disabling the timer before calling ShowModal. I've just tried the exact same thing under Delphi 5, and shortly after Form2 is displayed, I get an exception saying EInvalidOperation with message 'Cannot make a visible window modal. This is probably more correct behavior than Kylix, but it's probably a difference between the basic component implementations. I would call it a bug, but I couldn't say for sure whether it was a bug in Kylix or Delphi. I noticed that Form2 was still in the AutoCreate list, removing it, and creating/freeing a TForm2 instance in the timer solved the problem in both the Delphi and Kylix versions. Really? I would think that you'd end up with multiple visible copies of the form, all modal. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Emailing out of Delphi - now it works!
- Original Message - From: [EMAIL PROTECTED] Sent: Friday, August 09, 2002 11:05 AM Subject: [DUG]: Emailing out of Delphi - now it works! Hi all, I had a query a week back about some PCs not working, while others did, when it came to emailing. I got an Interface not supported error. I've tried all sorts of things, including looking at the registry and attempting to re-register dlls. I now have my solution, and thought I should share it in case others come across this. We simply re-installed Outlook 2000 on a problem PC and hey presto, Delpi could email out with no problems. So something was corrupted, and the re-install fixed it. I presume this means you're using MAPI to do you email. I've always avoided this, at first because I thought the interface was just ugly, then because I didn't want to have to load another program to do the transport. There are plenty of components available that will handle the entire email process without resorting to MAPI, and they will NEVER fail because of a corrupt installation of Outlook. How (or if) you use them is of course entirely up to you :) -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: File Export Speed
Message - Original Message - From: Paul Heinz Sent: Thursday, August 08, 2002 6:15 PM Subject: RE: [DUG]: File Export Speed Corey wrote: - Original Message - From: Myles Penlington Sent: Wednesday, August 07, 2002 10:20 AM Subject: RE: [DUG]: File Export Speed This string concatenation will be very slow - it is a N squared algorithm for the number of bytes copied ie bad news. Not quite that bad. AFAIK Strings allocate memory a block at a time... but it's still pretty bad. I wrote a program that passed Strings down a recursive tree search, then rewrote it using PChars and got a major speed increase... run time went from an average of 2 minutes to a little over 18 seconds. Definitely worth the extra coding effort. Yes, it is an O(N squared) algorithm since each string concatenation will require an extension which means allocating a new bigger string and copying the result over. Copying the string will take an amount of time proportional to the current length (a function of N) and this will be done a number of times that is a function of N. Hence, overall O(N squared) where N is Rows * Fields. Seems I was wrong. I stepped through the asm code in System.pas, and it does indeed reallocate the string's memory every time you add to it. If the string happens to be in a space it can grow into the memory management simply extends the allocated buffer, otherwise it will allocate a new buffer and copy the contents of the string to it then append the new string. So it has a non-predictive order approaching O(N^2), or possibly O(N^2log(N)) for extreme memory fragmentation. I think perhaps I was getting confused with TMemoryStream, which does allocate (in BCB4 at least) in blocks of 8k. Change the code to write each string field independently (i.e. avoid concatenations) and the algorithm will run much faster and still offer text output. Some buffering on the TFileStream may help as well to avoid many small writes but the OS should do a fair job of that for you. I agree. String concatenation is not required in this case, and just wastes time. Writing directly to the stream, with or without a buffer of some sort, should be significantly faster. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: mis using pointers
Well, I do dabble. Kind of have to if I ever want to figure out what the VCL or any of the third-party components I use does... or, more importantly, why it's NOT doing things the way I think it should. And sometimes a general knowledge issue comes up here that I can insert my $0.02. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. - Original Message - From: Neven MacEwan [EMAIL PROTECTED] To: Multiple recipients of list delphi [EMAIL PROTECTED] Sent: Thursday, November 15, 2001 2:05 PM Subject: Re: [DUG]: mis using pointers Labels LabelshmmWhy are you lurking on the D list? ;-) --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: mis using pointers
They're both the same size (32-bit), so casting between the two shouldn't cause any problems. As long as nothing is then trying to dereference the resultant pointer, no worries. TList is quite good about this, so you can use it to store integer values. I've used this in the past to store integer tokens in a TList of pointers to act as markers. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. - Original Message - From: Neven MacEwan [EMAIL PROTECTED] To: Multiple recipients of list delphi [EMAIL PROTECTED] Sent: Thursday, November 15, 2001 12:12 PM Subject: [DUG]: mis using pointers Hi I know you'll all leap on theis one but can I cast and integer to a pointer? So I can so List.Add(Ord(Screen.Cursor)), where list is tlist --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: mis using pointers
Oh, sorry. But it's not really what you asked :) Be careful what you ask for - you just might get it. - Unknown Wise Person -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. - Original Message - From: Neven MacEwan [EMAIL PROTECTED] Thanks John :-) I was about to lose hope that someone was goint to point out the obvious (which is what I required) --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: mis using pointers
Umm... is now a good time to remind people I'm a C++ programmer? /me runs and hides -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. - Original Message - From: Neven MacEwan [EMAIL PROTECTED] Corey You are right but i did give a code snippet List.Add(Ord(Screen.Cursor)) That wouldn't compile --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: How to send HTML format email using Simple Mapi?
Title: How to send HTML format email using Simple Mapi? Not with MAPI, but I've done it with the SMTP components from ICS, and I'm sure Indy has something that could do it. Is there any particular reason why you want to go through MAPI for this? --Corey MurtaghThe Electric Monk"Quidquid latine dictum sit, altum viditur." - Original Message - From: Tom Munro Glass To: Multiple recipients of list delphi Sent: Tuesday, November 13, 2001 10:24 AM Subject: RE: [DUG]: How to send HTML format email using Simple Mapi? I think you might be on the right track with having to use multiple attachments, but there's some vital bit of information I'm missing to do with defining the Content Type. Has anyone else done anything like this?
Re: [DUG]: More discoveries about actions
This is normal. If you hit both buttons together then you'll still generate two keypresses, one for each. The first one will execute the action, and the other will sit in the event queue until something asks for it. In the first case, where you're just setting the value of a label, the next check of the event queue will cause your other action to fire. In the second case the event queue will be polled by the message box, which will most likely discard the other keypress as being irrelevant. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: TNMSMTP
- Original Message - From: Steve Galyer [EMAIL PROTECTED] To: Multiple recipients of list delphi [EMAIL PROTECTED] Sent: Wednesday, October 17, 2001 8:34 AM Subject: Re: [DUG]: TNMSMTP Thanks Patrick Nello but unfortunately neither of your suggestions are true. I have tried this approach already, anyway Outlook Express does an automatic dialup every 30 minutes which would suggest that these settings are OK. The problem occurs on several machines that I have tested under Win Not necessarily. OE actually dials the connections by making calls to the RAS API. It doesn't rely on your connection settings being correct. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Contracting issues - Comments please
- Original Message - From: Bob Osborn To: Multiple recipients of list delphi Sent: Monday, October 15, 2001 9:56 AM Subject: Re: [DUG]: Contracting issues - Comments please If you went to Accessdatabases andVB or VC++ you'd probably use ADO - and in my opinion Delphi handles ADO more elegantly than VB does (don't know about VC) so youhave another alternative Visual C++ is a complete misnomer - nothing is easier in that than any other development environment. In fact more often than not it's a harder to achieve anything in it than just about every other env, unless you're happy to use the bug-ridden MFC classes. --Corey MurtaghThe Electric Monk"Quidquid latine dictum sit, altum viditur."
Re: [DUG]: Borland RAD Seminars - Ak, Wgtn, ChCh
Try this link: http://www.123.co.nz/docs/borland%20rad%20seminar.doc For future reference people, if you're going to paste a link with spaces in it, could you please convert them to %20s to avoid this sort of confusion. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. - Original Message - From: Robert Martin [EMAIL PROTECTED] To: Multiple recipients of list delphi [EMAIL PROTECTED] Sent: Monday, October 01, 2001 4:21 PM Subject: Re: [DUG]: Borland RAD Seminars - Ak, Wgtn, ChCh The web site you link to points nowhere. www.123.co.nz seems to be somesort of unfinished web site. Could you pot the correct address plse. --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: BorCon
- Original Message - From: Stephen Barker [EMAIL PROTECTED] To: Multiple recipients of list delphi [EMAIL PROTECTED] Sent: Tuesday, September 11, 2001 5:26 PM Subject: [DUG]: BorCon Anyone going this year? The rego fee has risen substantially: $1464 (user group rate). Whoa... why so much? I've never been to one, but is it worth the price tag?? There doesn't appear to be any product discount this time either :( And I guess not much chance that they'll be handing out free software to everyone : -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: DIBs et al
- Original Message - From: James Sugrue [EMAIL PROTECTED] To: Multiple recipients of list delphi [EMAIL PROTECTED] Sent: Monday, September 10, 2001 3:08 PM Subject: [DUG]: DIBs et al What is the easiest way to get a Bitmap in a TImage to print the same size as it is on screen? I tried passing it to a TMetaCanvas but I must have been doing something wrong as it printed very small. The size that the bitmap will print is dependant largely on the DPI setting of the printer. If you have a 300x300 pixel bitmap, and a 300DPI printer, then expect a 1-inch square output image. You should be able to fix this by upping the image size by stretching it when you draw to the printer canvas. Exactly how much you stretch will depend on the printer settings. If it's 300DPI then you might want to stretch it by (using standard screen resolution of 96DPI) 300/96 = 3.125. So your 300x300 pixel image is stretched to 938x938 - or 3.125 inches square. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Should be Offtopic but....
- Original Message - From: NIRAV KAKU [EMAIL PROTECTED] To: Multiple recipients of list delphi [EMAIL PROTECTED] Sent: Saturday, September 01, 2001 6:19 PM Subject: Re: [DUG]: Should be Offtopic but Interesting. But doesn't the caller ID come from the telephone company? As in, if they wish they, could they stop it? Here in INDIA, we have CLIP too BUT you have to pay for it. Anyways, do mail me the code, definitely woudl like to check it out. Yeah, same happens here - you pay for caller ID or you don't get it on standard phone lines. But there have been problems with various modems not recognizing the caller ID format used here for some reason - I would have thought it would be fairly standard world-wide, but telcos are notorious for non-standard stuff : -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Lazarus
- Original Message - From: [EMAIL PROTECTED] To: Multiple recipients of list delphi [EMAIL PROTECTED] Sent: Tuesday, August 28, 2001 4:31 PM Subject: RE: [DUG]: Lazarus The point was that the code used to show how the highlighting would display in the editor is the same... Guess I didn't make myself clear the first time. They actually use the SynEdit control and highlighters inside the actual editor. You missed the point big time. SynEdit? You mean the open source component for Delphi that anyone could take and convert to another language (or pascal implementation, or whatever)? That SynEdit? I don't see how using that infringes anyone's copyrights, unless of course somone involved with the SynEdit project is somehow stealing Borland's highlighter code. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Lazarus
- Original Message - From: [EMAIL PROTECTED] To: Multiple recipients of list delphi [EMAIL PROTECTED] Sent: Wednesday, August 29, 2001 10:56 AM Subject: Re: [DUG]: Lazarus OK this is getting frustrating now... This line here The point was that the code used to show how the highlighting would display in the editor is the same... Go into Delphi (D5 assumed). Select Tools | Editor Options. Select the color tab. Look at the code used to illustrate how the highlighting will work. The point is that they couldn't even be bothered writing there own snippet of code to illustrate the different highlights that would be applied. Nothing earth shattering... Same event names as well... Similar/same property names. Does VB have similar/same event and property names as Delphi. I've never used it. Ok, now I KNOW we're talking about different things. When you're in a developers forum and you say 'code', the obvious interpretation is 'source code'. They did write their own code, or at least get SynEdit to compile on their platform, or else there'd be nothing there. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Unique Machine ID....
The NIC address of the dial-up adapter is static... AFAIK it's the same on all computers running, at least, the same version of windows. Or it could be just the same thing across all computers running any variation of Win32 - I haven't checked them all yet G What you need is a way of fingerprinting computers, right? There are a few problems with this... specifically that identical computers with fresh installs of the same OS (especially if you use ghost to copy an installation) are likely to produce the same fingerprint. Unless you can get ID codes from the hardware (processor serial, drive serial, etc) then there's not much variation between them. Short of generating (and storing somewhere) a code of your own (GUID, etc), I can't see a viable way of doing this. Even then there's not a lot stopping me from using a drive duplicator to install an exact image of my HD to another machine, including whatever you've stored :/ There are usually a few spare bytes at the end of the RTC/CMOS memory, if you're game to try using those : --Corey MurtaghThe Electric Monk"Quidquid latine dictum sit, altum viditur."
Re: [DUG]: Sets of Strings?
- Original Message - From: Ross Levis [EMAIL PROTECTED] To: Multiple recipients of list delphi [EMAIL PROTECTED] Sent: Wednesday, August 01, 2001 11:41 PM Subject: [DUG]: Sets of Strings? A beginners Pascal question here: Is there a better way of doing this? If (Extension='.wav' or Extension='.mp3' or Extension='.ogg') then ... Is there something similar to a Set I can use that would let me write something like this? If Extension in AudioFiles then ... I tried Pos(Extension,AudioFiles)0 but an extension of '.w' would also be true. You can do something like this with a TStringList using the IndexOf method. Another question. Is it quicker to add many items to a TStringList unsorted and then Sort it; or set Sorted True sort each item as it is added? Or is there no difference? Sorting after you add is MUCH faster, for a couple of reasons. One is that when 'Sorted' is true the Add methods of TStringList first check to see if the string already exists using the Find method, which also returns the correct position if the string doesn't already exist. The second is that when you insert a value near the front of the list it has to move all the others to make room, which is much slower than using Sort once on the list once you've added everything to it. I did a quick speed test on it, adding 1 numeric values (in reverse order) to sorted and unsorted lists, then sorting the unsorted one. Results: Unsorted: Add 0.382s Sort0.970s Total 1.352s Sorted: Total 119.320s This is a worst-case scenario for the sorted list of course, so I tried it in ascending order (best case) and got a total time of 2463ms. Much better, but still way slower than adding to the unsorted list. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Lan base vs WAN/Web based Databases
- Original Message - From: Steve Aish [EMAIL PROTECTED] To: Multiple recipients of list delphi [EMAIL PROTECTED] Sent: Thursday, July 26, 2001 5:51 PM Subject: [DUG]: Lan base vs WAN/Web based Databases I have a customer based in the US who wants a database which to start with will be LAN based. 18 months from now he wants to make it a web based app so that reps can access it from anywhere in the US. Is there any point in designing the LAN based version and then porting it to web based or is it a major shift? If by 'web based' you mean 'browser based', then it's quite a shift in GUI, but the database logic should remain basically the same. As someone else suggested though, why not make it XML (or some other handy encoding) and sell them a client application too :) The reason I ask this is that in order to set up a web based app we need to invest lots of money and upgrade to Delphi 6 Enterprise (I currently use Delphi 5 Professional). This means that the customer will also be investing a lot more money up front in order to make purchasing Enterprise affordable for us and the project worth doing. Just my NZ$0.02, but if you're going with standard browser stuff then get hold of a reasonably good CGI component set (we use CGIExpert) and see how hard you find writing through that. If you like it, then no reason at all to upgrade to Enterprise... which either means more profit for you or lower cost for the customer. Even if that doesn't pan out, there are still plenty of other options aside from spending megabucks on Enterprise. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Kylix now Free for Open Source Projects
- Original Message - From: Mark Derricutt [EMAIL PROTECTED] To: Multiple recipients of list delphi [EMAIL PROTECTED] Sent: Friday, July 27, 2001 8:53 AM Subject: Re: [DUG]: Kylix now Free for Open Source Projects Question, if we're writing a *NEW* application with Kylix, does this exception kick in, the quoted paragraph was talking about if the modified program... which new ones are not Even more importan question... if Kylix uses any GPLed code, then doesn't the GPL require it to be open-source too? Just a thought : -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Timing Resolutions
- Original Message - From: Colin Fraser [EMAIL PROTECTED] To: Multiple recipients of list delphi [EMAIL PROTECTED] Sent: Wednesday, July 25, 2001 2:50 PM Subject: RE: [DUG]: Timing Resolutions What are you trying to do?? Myles. Hi Myles, The application was for controlling a robotic arm... I believe the application used to count pulses (from something) as the arm moved but this was proving unreliable as a pulse or two was getting missed. Sounds like rotary encoder stuff. Depending on how high resolution the encoder is it could produce a huge number of transitions per second. We had a problem like this with a machine I helped setup years ago... The application would need to time the movement of the arm... I think they where also looking at a PLC to do the counting and return the counts to the PC, that was another option. Depending on how fast the encoder (or whatever it is) sends pulses a PLC may not be fast enough. We had to build a step-down device to slow the pulse rate down before feeding it to a PLC. If you have access to a reasonably competent electronics person you might want to talk to them about building a little device that converts the pulse stream to an 8-bit number of some sort that you can feed in through a parallel or serial port. I can give you a few ideas about how if you want... Having said that, modern computers are fast enough to handle most stuff of this nature. If you can be sure that you can get an input loop/timer to scan the stream at least twice per transition then you should be able to read the bit stream... then you just have to decode it :) -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Kylix now Free for Open Source Projects
- Original Message - From: Peter Harrison [EMAIL PROTECTED] To: Multiple recipients of list delphi [EMAIL PROTECTED] Sent: Thursday, July 26, 2001 9:37 AM Subject: [DUG]: Kylix now Free for Open Source Projects Hi Guys, Just saw this today on Slashdot: snip This is almost enough for me to reformat my Windows Machine to Linux :-) I tried last night, but looks like I'm going to have to run Kylix on another machine... I'm not giving up my Debian! : Seriously though, has anyone managed to install it under Debian? If so then there's hope for me yet. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Proportional String Lengths?
From: Ross Levis [EMAIL PROTECTED]
Here's a Windows dev newbie question. I'm use to working in DOS with a
fixed size font.
I'm using a Listbox to list 2 column's of data.
{I could use a StringGrid but I don't need all the added functionality
it adds an extra 50k to the size of the EXE. I like to keep things as
simple as possible.}
This is done by setting the TabWidth property separating the 2 fields
with a tab (^I). It works well except when the first field exceeds the
length of the TabWidth, whereby it moves the 2nd field another TabWidth
to the right. I would like to truncate the first field before it
exceeds the tab length, but is there any easy way to calculate the
physical length of a string of characters? I'm guessing not, without
knowing each characters width.
You can get the width of a string by calling the TListBox.Canvas.TextExtent
method, passing it the string you want to test, then trim down the string if
it's too long. See below for another option though...
I have a similar problem with a listbox where I want to store a list of
numbers right-justified. I tried the Format function to force the Width
but it only works with a fixed size font. I've been forced to use the
'precision' option to add leading zeroes to the numbers which looks
ugly. What is the standard way to do this?
If you want anything non-standard, the best way is to draw it yourself. Set
the TListBox.Style property to lpOnwerDrawFixed and write an event handler
for TListBox.OnDrawItem. This solves both the right-aligned problem and the
item-too-long problem by letting you draw the items exactly how you want
them to look.
Here's a quick sample. You'll have to excuse any errors in coding - I'm a
BCB programmer :
procedure TForm1.ListBox1DrawItem(Control: TWinControl;
Index: Integer;Rect: TRect; State: TOwnerDrawState);
var
txtSize : TSize;
txt1, txt2 : String;
Rect1, Rect2 : TRect;
begin
{ add some code here to fill txt1 txt2 with something based on index }
{ now draw it }
Rect1 := Rect;
Rect2 := Rect;
Rect1.Right := Rect1.Left + 50;
Rect2.Left := Rect1.Right;
with ListBox1.Canvas do
begin
Font.Color := clWindowText;
Brush.Color := clWindow;
if odSelected in State then
begin
Font.Color := clHighlightText;
Brush.Color := clHighlight;
end;
if (odGrayed in State) or (odDisabled in State) then
Font.Color := clGrayText;
{ draw first column }
TextRect(Rect1, Rect1.Left + 2, Rect1.Top, txt1)
{ draw second column, right-aligned }
txtSize := TextExtent(txt2);
TextRect(Rect2, Rect2.Left + Rect2.Width - txtSize.cx - 2,
Rect2.Top + 1, txt2);
end;
end;
Hopefully (if I translated it right) that will draw your list items in two
columns, with the first one truncated at column 50 (an arbitrary column
width I snatched out of thin air), and the second one right justified. If
the value for either one is larger than the rect it's drawn in then the
excess will be lost. Only the specified rect will be drawn.
Play around with it and see what happens.
--
Corey Murtagh
The Electric Monk
Quidquid latine dictum sit, altum viditur.
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Re: [DUG]: Delphi Kylix compatibility
Nirav, could you please turn off your receipt notification? I'm sure you don't need to know when everyone on the list receives your messages. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Delphi 6 Registration
From: Mark Derricutt [EMAIL PROTECTED] If that would be illegal, how come MS can do it with their activation stuff? Did you follow the last time someone tried to take M$ to court? They get away with a lot of stuff because they're just too damn big. And what happens if you don't have net access? (or, email only access). Then you get bugged a lot I guess : -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur. --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
Re: [DUG]: Copying Files
Donovan J. Edye wrote: N, 1. Have a look at rsync http://rsync.samba.org/. It's available for most flavours of *nix as well as Windoze 2. A file that size would also do well from an FTP transfer. You could do resumes if the transfer broke etc Assuming that the boxes are Windoze the last thing I would be looking at is an SMB (ie Windoze copy) transfer Why is that? I've never had any problem copying 100MB+ files from one Win9x machine to another. Over a 10Mbit ethernet (assuming little to no other traffic) it should only take a little over a minute to transfer a 40MB file. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi
Re: [DUG]: Copying Files
Donovan J. Edye wrote: C, Yeah. When I read network I was thinking more in terms of a WAN where nodes may only be connected by 56K modems. Obviously sitting on a 10/100mbit network will get the file copied with no problems using SMB. Try that between some modems using SMB and you have the start to ending up in a mental institution. ;-) Ah, a fundamental difference in assumptions then : I wouldn't advise SMB for anything but fast networks - 10Mbit being a minimum. For anything else (including 'fast' serial links) just about ANY other form of transfer, especially one with resume, is preferable. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi
Re: Re: [DUG]: Printing
Sorry about the lack of quoting... stupid email program doesn't handle quoting HTML posts (time for a change), but... In your example code you create a TImage, but don't give it a size. Have you tried copying it to a on-screen canvas to see what it looks like? I suspect that it's got no height or width, so when you copy it to the printer canvas there is (understandably) nothing to copy. Try: drawbfr := TBitmap.Create(Application) drawbfr.PixelFormat := pf1bit; drawbfr.Height := 1; drawbfr.Width := 1; try SourceRect := Rect(0, 0, 1, 1) drawbfr.Canvas.Rectangle(1, 1, 200, 200); Canvas.CopyMode := cmSrcCopy Canvas.CopyRect(SourceRect, drawbfr.Canvas, SourceRect); finally drawbfr.Free; end; You can assign the bitmap to the TImage if you prefer, or try resizing Image.Picture, but it seems to me that TImage has lots of overhead that you don't need in this instance. The worst part about this whole thing is that in the example above drawbfr will have a total of 1 pixels occupying around 1.25MB of memory, and copying the whole thing to the printer canvas could cause you some major headaches. Not to mention the fact that many video drivers have issues with huge bitmaps, and aren't particularly well known for handling huge CopyRect operations smoothly. All in all I think though that it's a better idea to draw direct to the printer. Less memory required, you can take advantage of the printer's own drawing commands (esp. handy for PostScript printers), and you avoid the majority of video-driver related issues. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi
Re:[DUG]: Jpegs
Robert Martin [EMAIL PROTECTED] wrote on 27/06/2001 13:30:45: Hi just a quick question. I believe that TImage doesnt support Jpeg files, which our users may want to use. What is the best way of doing a preview of BMPs and Jpegs. Do we need two components, 1 for each image style or is there a component that displays both? I believe there's a TJPEG component that ships with Delphi. Have a look for jpeg.dcu in your delphi dir - in BCB it's in ...\lib\obj, but I can't recall how Delphi lays out the directories. This module implements a TJPEGImage class and registers itself with TPicture (I think) to enable it to handle reading writing JPEG images. At worst you'll have to instatiate a TJPEGImage to load the file, then copy the decoded bitmap to somewhere, or paint it directly onto your display canvas. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi
Re: RE: [DUG]: Zero-footprint database drivers
Myles Penlington [EMAIL PROTECTED] wrote on 27/06/2001 16:05:59: What about IB6 - it supports a read-only DB especially for CD-Drives? Don't know how you go about avoiding installing the drivers. I suppose if it is all in the same directory, or the cd has the correct directory structure, then it may work without an install. You may have to experiment to see if it works as you require. He's looking for something that compiles into the executable - ie nothing to install on the user's system other than the executable itself, and it sounds like it's being written to run direct from the CD. That in mind, I wouldn't hesitate to back Edward Aretino's suggestion. I've used kbmMemTable for quite a few things, and it works great. There are a few gotchas, but they generally only pop up when you do out- of-the-ordinary stuff. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi
Re:[DUG]: Writing to HKEY_LOCAL_MACHINE by non-administrator
Alex Kouznetsov [EMAIL PROTECTED] wrote on 27/06/2001 16:29:21: When Delphi application is ran by non-administrator user on NT/2000 PC, it cannot write to HKEY_LOCAL_MACHINE registry key. Are there any tricks to get around this limitation ? Not as far as I know. There are a bunch of good reasons that it's protected. If you absolutely must change something in there then you'll need to get someone to log in as admin and do it for you. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi
Re: RE: [DUG]: Delphi Graduate Programmer Job Offer
[EMAIL PROTECTED] wrote on 26/06/2001 15:43:52: Maybe they have to have a degree? Sorry don't mean to be facetious but. surely if the person had two years experience they wouldn't be graduates. Guess I'm screwed then... been programming for lots of years, but I never got a piece of paper that said I knew how. And considering some of the programmers I've met with CS degrees... -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi
Re: [DUG]: Traps with MessDlg()
The important part of this thread though is that you should be careful how you test the return from message dialogs. The rule of thumb that we use is if you're going to do something with one of the possible responses then that is the one you should test. So if you're asking the user if they really want to delete something then you abort on anything other than 'Yes'. If on the other hand you ask them if they want to keep the record, then you abort on anything other than 'No'. Robert Martin [EMAIL PROTECTED] wrote on 21/06/2001 10:20:19: I tend to agree with Rohit from a usability stand point. we often use OK and Cancel instead of yes/ no. snip - Original Message - From: Rohit Gupta [EMAIL PROTECTED] snip Steve, I think all those boxes should have yes/no/cancel buttons even if cancel does the same as no. :-) I've always thought that this is only useful if all the buttons do different things. Like a save query that pops up when you close a file - yes to save, no to discard changes, and cancel to keep the file open. Redundant GUI elements just aren't sexy : PS: Sorry Rob, my email client went nuts and sent this to you (possibly twice) instead of the list. Oops. -- Corey Murtagh The Electric Monk Quidquid latine dictum sit, altum viditur! --- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of unsubscribe delphi
