Re: [Lazarus] DOM and GTK 12: how to set encoding?
Am Freitag, den 17.04.2009, 16:05 +0200 schrieb Mattias Gaertner: On Fri, 17 Apr 2009 15:13:37 +0200 Marc Santhoff m.santh...@web.de wrote: [...] I have a DOM model read from a xml file that has no encoding named inside it. The var TXMLDocument.Encoding is empty after the file is loaded. [...] How can make GTK 2 show those chars as in GTK 1? convert the xml file to UTF-8 OR convert the xml file before passing it to the xml reader OR convert the strings before passing them to the LCL See unit lconvencoding GuessEncoding and ConvertEncoding. I like cookbook-style compressed receipes. :) Many Thanks, -- Marc Santhoff m.santh...@web.de ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] DOM and GTK 12: how to set encoding?
Am Freitag, den 17.04.2009, 18:19 +0400 schrieb Sergei Gorelkin: Marc Santhoff wrote: Hi, I have a DOM model read from a xml file that has no encoding named inside it. The var TXMLDocument.Encoding is empty after the file is loaded. TXMLDocument.Encoding is currently not functional. The XML reader assumes that files without specified encoding are UTF-8 (or UTF-16 if a BOM is present). In your case, however, it appears that the file does not contain non-ASCII characters in literal (they are 'escaped' by character entities). The encoding is not relevant in this case, because character entities are directly converted to Unicode code points. I see, hopefully I'll get used to this stuff really soon ... WHen compiling the program for GTK 1 the german umlauts are shown correctly, I assume GTK 1 defaults to system encoding (or so ;). The files have been written in a GUI using the same system encoding (ISO-8859-1). The DOM is based on WideStrings (UTF-16 encoding). When you assign DOM properties to AnsiStrings, the compiler inserts implicit conversions into system encoding. When compiled for GTK 2 the umlauts are not shown corrctly and on the console messages like this appear when handing over strings to gtk widgets: Pango-WARNING **: Invalid UTF-8 string passed to pango_layout_set_t ext() When the texts are not used as caption but as text inside a memo, the warning differs: Gtk-CRITICAL **: gtk_text_buffer_emit_insert: assertion `g_utf8_val idate (text, len, NULL)' failed and the strings in question are left out up to the next newline. GTK 2 requires UTF-8 everywhere, so implicit conversions inserted by compiler will work correctly only when your system locale is UTF-8. Otherwise, you'll need to manually convert strings using UTF8Encode() and UTF8Decode(). One more question on this topic: How do other OS handle encodings? I have to decide whether to put the encoding routine calls inside the data classes, that would mean any OSes GUI is handed over UTF8 strings, or if I have to do it in the GUI glue code differently on any platform. The encoding inside the file löooks like this: Stichw#246;rter: for the Letter ö. How can make GTK 2 show those chars as in GTK 1? Regards, Sergei That are very helpful explanations, thanks a lot! -- Marc Santhoff m.santh...@web.de ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] DOM and GTK 12: how to set encoding?
Hi, I have a DOM model read from a xml file that has no encoding named inside it. The var TXMLDocument.Encoding is empty after the file is loaded. WHen compiling the program for GTK 1 the german umlauts are shown correctly, I assume GTK 1 defaults to system encoding (or so ;). The files have been written in a GUI using the same system encoding (ISO-8859-1). When compiled for GTK 2 the umlauts are not shown corrctly and on the console messages like this appear when handing over strings to gtk widgets: Pango-WARNING **: Invalid UTF-8 string passed to pango_layout_set_t ext() When the texts are not used as caption but as text inside a memo, the warning differs: Gtk-CRITICAL **: gtk_text_buffer_emit_insert: assertion `g_utf8_val idate (text, len, NULL)' failed and the strings in question are left out up to the next newline. The encoding inside the file löooks like this: Stichw#246;rter: for the Letter ö. How can make GTK 2 show those chars as in GTK 1? Regards, -- Marc Santhoff m.santh...@web.de ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] windowmanager interaction of lcl
Hi, I'm still having trouble using GTK or GTK2 when running Window Maker (http://www.windowmaker.info/). Every time virtual desktops are switched lazarus itself and any application built with it are minimized. Is this a known bug? Where in the LCL is the handling of window manager events? Regards, -- Marc Santhoff m.santh...@web.de ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] How to update a running application
Am Sonntag, den 07.12.2008, 12:24 +0100 schrieb Roland Turcan: Hello all, I write a small systray application which I know, that time to time we will need to change/add/remove something, but this application is started from user's startup and runs until his log off. When our update process gets newer version of it I need to close that application, exchange its components and start it again. On windows I solve it using messaging, but on Linux I don't know what is the way to inform application about my wish to terminate it. How can I solve this problem? PS: I though about : 1) signal file as flag to close itself This is the normal way on Unix-like system. Send your program a SIGTERM or SIGUSR1 or so. I'm not really sure if programs compiled with fpc will terminate automatically on SIGTERM but in all cases you can register a signal handler for SIGUSR1 and do from the program whatever you like to to (except setting the users cat on fire maybe ;). Try: $ man kill $ man sigaction (on FreeBSD, should be similar on Lunix) HTH, Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] libusb access from Lazarus
Am Montag, den 24.11.2008, 10:55 + schrieb Mark Morgan Lloyd: Henry Vermaak wrote: the ftdi chip is practically a usb to serial converter, so you can actually use that. if you look at their windows dll api, you'll see that they've got a set of functions that mimic the windows serial functions. otherwise there are serial comms units for fpc (but i haven't used any of them). I'll be looking at comms coding at some point, but more important is making sure that I can run legacy arcane protocols- hence my interest in DOSemu, which is good enough to run things like EPROM blasters. Does anybody use libusb-win32? If so could I have a copy of the unpacked binaries- I've got NT4 systems here which do have USB low-level drivers but the installer insists on NT5 and I don't want to start working out how to rebuild them. I have installed that stuff once on w2k, can you give the exact names of the DLLs you need? (... attention, henn and egg problem approaching ... ;) Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] using two versions of RTL from lazarus
Am Montag, den 10.11.2008, 16:30 +0100 schrieb Marc Santhoff: I'll try do use some conditionals inside my fpc.cfg, although I'm not sure where to find documentation on this topic someone here or on the fpc list showed an example some time ago (regarding compiler versions IIRC). Replying to myself: The docs are in the users guide. :) Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] using two versions of RTL from lazarus
Am Montag, den 10.11.2008, 10:52 + schrieb Martin: Florian Klaempfl wrote: Henry Vermaak schrieb: How can I use lazarus to switch between those two? easiest is probably to install the ppu files to different locations, then invent a custom define and add it to your fpc.cfg to switch between different versions (where the -Fu paths are defined). you don't really need to do this if you are just worried about debug info, since you can strip the debug info afterwards. This is not completetly true, when debugging it's also better to turn the optimizer off to get better results. I remember a switch definition for compiling releases in fpg.cfg ... Another option, not perfect, but doanle, is to use --primary-config-path You could have to shortcuts / two startup scripts, passing a diff config directory to lazarus. Each would have one of the rtl-path in it's enviroment conf. It does mean to restart lazarus, in order to build releases (or start a 2nd instance). Alternatively, you may be able to swap you fpc.cfg file, while lazarus is running, the next compile should pick up the new config. ... together with this remark it makes an idea. I'll try do use some conditionals inside my fpc.cfg, although I'm not sure where to find documentation on this topic someone here or on the fpc list showed an example some time ago (regarding compiler versions IIRC). Thank you all, Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] using two versions of RTL from lazarus
Hi, I'd like to use two version of the fpc libraries from inside lazarus, one RTL for release/normal usage and another one compiled with debugging symbols included. How can I use lazarus to switch between those two? TIA, Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Lazarus repository in Git (summary)
Am Donnerstag, den 06.11.2008, 15:33 +0100 schrieb [EMAIL PROTECTED]: On 11/6/08, Marc Santhoff [EMAIL PROTECTED] wrote: I don't know TC and it's GUI, but for cvs and svn there is always TkCVS. Thanks, I'll take a look - though I love my CLI interface and it's consistent across platforms. Maybe the next new developer in our company can start of with a GUI if they wish. As for Team Coherence. The website is here: http://www.teamcoherence.com/ And here's a screenshot: http://www.teamcoherence.com/images/vmmain.jpg BTW, Lazarus has it's own SVN GUI interface plugin in case you didn't know. It's named lazsvnpkg and can be found under ./components. Mind you it's still under developement (working on the repository browser right now), but basic stuff is in. Thanks for pointing this out, I didn't know yet and will test it as soon as possible. I'd love to have one tool less, although the graphical tree (depending on special comments in cvs's modules file :( ), tkdiff and lots of warning dialogs are really helpful. Regards, Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] configure tools: show output of command
Hi, is it possible to open a window or source editor page showing the oputput of a system command in lazarus? E.g. I want to have a man page shown for a system function where the cursor is at or inside the name of this function like ($CurToken()). Can this be done by assembling a configuration item in the tools - Configure custom tools ...-menu? TIA, Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] Delphi Modbus Library
Hi, has anyone tried translating and using this one with fpc/lazarus?: http://sourceforge.net/projects/delphimodbus Regards, Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] unknown property when changing platform
Am Donnerstag, den 31.07.2008, 18:59 +0200 schrieb Mattias Gaertner: On Thu, 31 Jul 2008 15:40:02 +0200 Marc Santhoff [EMAIL PROTECTED] wrote: Hi, I have a lazarus project created and working on FreeBSD. This project is checked into CVS. Now I'm starting to port the project to win32, using exactly the same lazarus version (svn update from FreeBSD, copied over to win32, make clean all, project checked out from CVS). When I open the project I get a message box saying: Error reading TJITForms Error reading TMFrame.LCLVersion: Unknown property: LCLVersion TFrame.LCLVersion was added one or two months ago. Maybe your windows version of lazarus is older? I had to do sort of a binary search to find a compilable version of Lazarus which is 14640 currently and that's the source I copied over to windows after make cleanall. I think I must have started Lazarus with an intermediate version that didn't work properly and saved my project ... although I don't remember doing so ... I think I'll fetch a precompiled binary and shut up. ;) Thank you anyways, Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] unknown property when changing platform
Hi, I have a lazarus project created and working on FreeBSD. This project is checked into CVS. Now I'm starting to port the project to win32, using exactly the same lazarus version (svn update from FreeBSD, copied over to win32, make clean all, project checked out from CVS). When I open the project I get a message box saying: Error reading TJITForms Error reading TMFrame.LCLVersion: Unknown property: LCLVersion (see attached screenshot) My questions: Why does this happen? The only difference is the pascal compiler, this cannot be the cause, I think. Will it do any harm? If IIRC it happens any time the project is opened again. TIA, Marc attachment: LCLVersion.jpg___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] importing program into lazarus project
Am Montag, den 21.07.2008, 08:45 +0200 schrieb Graeme Geldenhuys: On Mon, Jul 21, 2008 at 12:38 AM, Marc Santhoff [EMAIL PROTECTED] wrote: I have a program written using fpc only that I'd like to import into a lazarus project. How can this be done the easiest way? Simply load Lazarus with a blank Lazarus project. Then open the main unit (program) of your fpc project using 'File | Open'... Lazarus will detect it's a 'program' and ask if it can manage it. Say yes. Lazarus would now have created a new .lpi file for your fpc program. Save the project and you are ready to go. That was it. I knew it could be done very simple, but using file-open slipped me while looking at all those project types. :) And what is the difference between custom program and program project types, No idea what's the difference. All I know is that program is a Free Pascal program and Lazarus maintains the .lpi (Lazarus Project Information) file for that program. The descriptions of the projects tell something about that topic. Command line parsing may be an issue, the uses line is mostly fixed. Thanks, Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] importing program into lazarus project
Am Montag, den 21.07.2008, 17:52 +0200 schrieb Vincent Snijders: Marc Santhoff schreef: Am Montag, den 21.07.2008, 08:45 +0200 schrieb Graeme Geldenhuys: On Mon, Jul 21, 2008 at 12:38 AM, Marc Santhoff [EMAIL PROTECTED] wrote: I have a program written using fpc only that I'd like to import into a lazarus project. How can this be done the easiest way? Simply load Lazarus with a blank Lazarus project. Then open the main unit (program) of your fpc project using 'File | Open'... Lazarus will detect it's a 'program' and ask if it can manage it. Say yes. Lazarus would now have created a new .lpi file for your fpc program. Save the project and you are ready to go. That was it. I knew it could be done very simple, but using file-open slipped me while looking at all those project types. :) I'd choose Project - New project from source. Antoher new menu entry. Those thingies seem to hide from me when I need them. ;) Thank you, Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] smart tabs but 2 spaces tab width
Am Dienstag, den 22.07.2008, 00:33 +0200 schrieb Mattias Gaertner: On Sat, 19 Jul 2008 06:01:43 +0200 Marc Santhoff [EMAIL PROTECTED] wrote: [ ... long explanation ... ] Can someone follow me? Yes. Smart tabs jumps to next word start of previous lines. Is this behaviour possible with any combination of editor settings? No. That's why they are called 'smart'. LOL I appreciate your humor very much. It was the company formerly known as Borland who invented this feature, wasn't it? ;) As a solution I changed my expextations of indentation style a little, I can live with that. Thanks, Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] smart tabs but 2 spaces tab width
Hi, I'm not really happy with lazarus' tab indentation feature. When the next line has an indentation wider than standard tab width, which is set to 2 spaces in my case, the cursor jumps to the (delphi like IIRC) next position aligned under the next space in the previous line (me thinks ;). I want to have smart tabs on, because I don't need to hit tab several times for deep indentations, but the stop should be only 2 places more than the start of the word in the previous line above ... difficult to explain. Look here, if I have this: case ButtonType of nbFirst: lb.ItemIndex := 0; nbLast: begin and want to write that: case ButtonType of nbFirst: begin lb.ItemIndex := 0; ... end; nbLast: begin When hitting enter with the cursor before lb.itemIndex it is indented to align with nbFirst. If I hit TAB with smart tabs off I have to do that a couple of times - too often. If I do the same with smart tabs on, the first TAB aligns with the colon after nbFirst, the second aligns one char after the of two lines above (the case line). This second TAB should align two spaces wide, not to any end of word. Can someone follow me? Is this behaviour possible with any combination of editor settings? TIA, Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Java's Document Elements model
Am Freitag, den 27.06.2008, 09:09 +0200 schrieb Graeme Geldenhuys: On 27/06/2008, Mattias Gaertner [EMAIL PROTECTED] wrote: Please try something like fpc/packages/univint/src/MacOSAll.pas. Jump to the end of the file and see what happens to the highlighting and your CPU. That is impressive. SynEdit handles a 10.2Mb file without problems. Even Gnomes gEdit slows down on that file, but it's way better that KDE's Kate or KWrite editors. The latter two are quite slow, until it's all caches. Even Midnight Commanders internal 'mcedit' editor works quicker than KDE's ones. That's clearly something the KDE developers screwed up - seeing that Qt rates performance quite high. FWIW: I tried that in JEdit (a Java editor having pascal syntax highlighting using the swing toolkit). It appears that: - I had to increase the java heap size to get that file loaded (in a session having 15 or so other files, some small, some big) from 32MB to 64 MB - other programs would not have this limit but suck in system memory at will - loading the file took some time (~1-3 seconds) amongst all other files - when hitting CTRL-Down the first time the CPU usage goes up a noticable step and a short pause occured (~2s) - when browsing around by keyboard after the first move to the eof I did *not* note any slow down or extraordinary load - when scrolling the file using mouse and scrollbar the cpu load does go up, but it works without delay Concluding I'd say JEdit handles this file without problems. Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Bug using Lazarus under KDE (minimizing)
Am Freitag, den 06.06.2008, 11:32 +0200 schrieb Graeme Geldenhuys: Hi, Another issue when using Lazarus under KDE. This seems to be a Lazarus issue, because my fpGUI based applications do not behave like this. Every time I switch desktops and return to the desktop that is running Lazarus, all the Lazarus windows are minimized. That's 5-7 windows I have to restore one by one, every time!! Under Gnome, FVWM2 this never happened. I'm running Lazarus v0.9.25 r15115M i386-linux-gtk. This is enough to make me stop using Lazarus, as I switch desktops quite often during my work. Anybody got a work-around or other solution for this? And compiling Lazarus to GTK2 or KDE is not an option. GTK1 is far more stable and responsive. Me too. When using WindowMaker on FreeBSD and the same happens every time when switching virtual desktops. If single windows (editor+messages) are restored (not the main window) they mostly hold their state after switching and (CTRL-)F9 works, too. svn rev. 14640 here ... Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Bug using Lazarus under KDE (minimizing)
Am Freitag, den 06.06.2008, 12:11 +0200 schrieb Marc Santhoff: Me too. Using GTK1 and GTK2 triggers this behaviour. Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Postgres Dlls not found
Am Samstag, den 31.05.2008, 13:31 +0200 schrieb Dave Coventry: Yes, DLL hell it is. That's why I was dismayed to see that PQconnection used the DLL (and not just one, it uses several). But I suppose if there's a good reason for it Most databases do it that way, e.g. Firebird and MySQL do have a client side installation relying on a dll/so, too. The library is the communication stub on the client side. Inside there is the implementation of the communication protocoll which is mostly unique for each sql server. If the communication was done using the command line this would involve a shell, the utility program and ssh/ssl. Looking at ssh would be using what? A library implementing the communication protocoll on the client side ... but one had to deal with moving query and result to and from a TProcess or something. How would you do that when multiple result were to transfer from the server? What if the variable $LANG was set by the user? Do the lines transferrred as text end on #10, #13 or #10 + #13? How would error codes from the server or the connection shell would be differentiated from each other and handled? Having a library eliminating a lot of such problems and encapsulating the rest is not that bad. It costs you having to care for one thing: the client computer has to have the correct dll/so or client package installed that fits the server version in use. Regards, Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Postgres database again...
Am Mittwoch, den 28.05.2008, 12:15 +0200 schrieb Graeme Geldenhuys: 2008/5/28 Graeme Geldenhuys [EMAIL PROTECTED]: 2008/5/28 Bogusław Brandys [EMAIL PROTECTED]: straight GUIDs (e.g. generated by Delphi written application) has their significant part at the end which does not provide for optimal indexing. Use of the UDF generating UUID (reverse GUID) is said to improve performance over the PK dramatically. I'll try and find the code for the 'UDF generating UUID (reverse GUID)' and create a tiOPF OID generator for it. Under Linux, it seems FPC gets the kernels UUID when you ask to create a GUID via CreateGUID(). Plus the GUID/UUID returned is totally random, to parts are the same as the previous request. eg; [EMAIL PROTECTED]:~$ cat /proc/sys/kernel/random/uuid ca65c9ce-b097-4ff0-8a1a-7f41628e9982 [EMAIL PROTECTED]:~$ cat /proc/sys/kernel/random/uuid c29650af-5562-4669-967d-5227402c0252 [EMAIL PROTECTED]:~$ cat /proc/sys/kernel/random/uuid f757c538-70eb-4432-b094-dc3ad5b824f5 [EMAIL PROTECTED]:~$ cat /proc/sys/kernel/random/uuid 4a8dca85-2040-4fe5-afa2-dfeb5066c731 [EMAIL PROTECTED]:~$ cat /proc/sys/kernel/random/uuid e576429b-fdf9-485a-b9f5-3319a2067b24 [EMAIL PROTECTED]:~$ cat /proc/sys/kernel/random/uuid f7335eb4-26bc-4467-8d99-04a3ef8702fd So I can't see the point in reversing the returned string. Maybe Delphi or Windows works different and some parts are the same as the previous request. This is where the low-high-scheme may be a good appraoch. Get the high part from the key server at startup or when needed because the lower part space is exhausted once and add a timestamp for the lower part on every new key. That way the ids are pretty compressable. Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Inactive Dataset
Hi,
I'm not really sure if this is a cp-error or the like, but ...
Am Mittwoch, den 28.05.2008, 10:32 +0200 schrieb Dave Coventry:
Sorry,
I should have been more specific
SQLQuery1.SQL.Text:='SELECT fname,
sname,id,comboboxcourse,studentnumber,enquirydate,enquiryreferencenumber
from registration WHERE fname=''Dave''';
StringGrid1.RowCount:=2;
SQLQuery1.SQL.Text:=sqlq;
... here you assign another string named sqlq and overwrite the nice SQL
from above.
Maybe that line is still in your code messing up the query?
HTH,
Marc
SQLQuery1.Open;
SQLQuery1.First;
while not SQLQuery1.EOF do
begin
StringGrid1.Cells[0,i]:=SQLQuery1.FieldByName('fname').AsString;
StringGrid1.Cells[1,i]:=SQLQuery1.FieldByName('sname').AsString;
StringGrid1.Cells[2,i]:=SQLQuery1.FieldByName('id').AsString;
StringGrid1.Cells[3,i]:=SQLQuery1.FieldByName('comboboxcourse').AsString;
StringGrid1.Cells[4,i]:=SQLQuery1.FieldByName('studentnumber').AsString;
StringGrid1.Cells[5,i]:=SQLQuery1.FieldByName('enquirydate').AsString;
RecNumber:=RecNumber+','+SQLQuery1.FieldByName('enquiryreferencenumber').AsString;
inc(i);
StringGrid1.RowCount:=i+1;
end;
SQLQuery1.Close;
On Wed, May 28, 2008 at 9:01 AM, Dave Coventry [EMAIL PROTECTED] wrote:
Hi,
I'm getting this: operation cannot be performed on an inactive dataset.
Googling (I'm on a slow dialup on someone else's line) seems to
indicate that the problem is with my Lazarus version.
The version I'm using is 0.9.23 beta SVN rev 12712.
I obviously can't download a new version of Lazarus...
Can anyone advise me?
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[Lazarus] layout managers
Hi, is there something like Javas layout managers available for Lazarus? I think a simple TBorderLayout would suffice, although I'd like to know other approaches that are similarly easy to use, especially when writing form building code by hand. Or maybe a tutorial explaning how to use Lazarus' standard classes in an efficient way. The only thing I found so far is the widgetgrid from MSEgui - that could be a starting point. TIA, Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] target filename extension
Am Mittwoch, den 21.05.2008, 14:13 +0200 schrieb Graeme Geldenhuys: Example: [EMAIL PROTECTED]:tmp$ ls -l untit* -rw-r--r-- 1 graemeg graemeg 7280 2008-05-21 13:50 untitled1 -rw-r--r-- 1 graemeg graemeg 2311 2008-05-21 13:51 untitled2 -rw-r--r-- 1 graemeg graemeg 96256 2008-05-21 13:51 untitled3 Here it lists three files of different types. OpenDocument Text, Rich Text and MS Word respectively. You have no idea knowing that from the command line, other than using some hex editor to peak at the first 3-5 bytes of the file (a process way above the avg user). As a test, I opened Nautilus. As with most Linux apps, it normally detects the file via it's magic number or something, not the file extension. The first two worked by simply double clicking on them, but it had no idea what 'untitled3' was (MS Word document). Strange! $ file unti* should do: $ file * Physik_Praktikum 6.xls: Microsoft Office Document Versuch 3a.doc: Microsoft Office Document Versuch 6a.doc: Microsoft Office Document Zugefestigkeit: directory Zugversuch.pdf: PDF document, version 1.4 So file does know at least ms-word documents. I think $ man file or $ man magic wil tell a lot about it. MAc does have a BSD userland too and thus there is magic (=the database for detecting file types). Using file extensions simply gives you a nice fallback option (hint) as to what mime type it is. Connecting applications and MIME types is a different thing. .linux or .elf I like .elf! :-) $ file enum enum: ELF 32-bit LSB executable, Intel 80386, version 1 (FreeBSD), statically linked, stripped H... ;) Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] embedding fomrs into forms
Am Montag, den 19.05.2008, 09:09 +0200 schrieb Marco van de Voort: On Mon, May 19, 2008 at 12:06:40AM +0200, Marc Santhoff wrote: My goal is to have a core programm and some additional parts delivered separately. Compiling the program for every permutation of combinations is not quite usable if the count of extras goes up. Packages is the only long term way. Unless your interface between the DLL and the program can be really limited and rigid. Then you might have luck the manual way. I don't understand, do you say, packages are dynamically loadable? I thought of them as statically linkable organizational containers. If a user has installed the basic program, can I send him a package that can be loaded at statup extending the program? Only by loadlibrary calls. (which must then be in the startup), and of course the interface must be known. But in general yes. The interface will be small and I'm free to define it at will. But that doesn't solve the problems using LCL in libraries, does it? The wiki article about library packages showed that someone actually succeded in compiling the RTl to a dynlib, that may be woth a test (combined with loadlibrary). Keep in mind that designtime packages are implemented using library packages inside Delphi. Delphi isn't recompiled for them :_) Interesting, I stopped using Delphi shortly after version 3 was out. ;) Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] embedding fomrs into forms
Am Montag, den 19.05.2008, 19:58 +0200 schrieb Mattias Gaertner: On Mon, 19 May 2008 12:54:45 +0200 Marc Santhoff [EMAIL PROTECTED] wrote: Am Montag, den 19.05.2008, 09:09 +0200 schrieb Marco van de Voort: On Mon, May 19, 2008 at 12:06:40AM +0200, Marc Santhoff wrote: My goal is to have a core programm and some additional parts delivered separately. Compiling the program for every permutation of combinations is not quite usable if the count of extras goes up. Packages is the only long term way. Unless your interface between the DLL and the program can be really limited and rigid. Then you might have luck the manual way. I don't understand, do you say, packages are dynamically loadable? I thought of them as statically linkable organizational containers. Note: The term 'package' has many meanings. A 'lazarus package' is a set of files/directories with some extras like compiler settings, output directory, i18n directory. It can be used to compile ppus, or to compile a static or dynamic library. A 'delphi package' is almost always a set of units with a dll (named bpl) as target. That part is clearly described in the wiki. It uses some compiler magic to allow sharing classes/types and RTL between dynamic linked libraries. FPC fully supports static libraries and 'normal' dynamic libs and platform independently. But is does not yet provide the compiler magic to share classes/types between dynamic libs. So, you can use the LCL as static lib, but not as dynamic lib (at least not comfortable). When it will, lazarus packages can be compiled to dynamic libs. It is possible to do the magic manually, but it is complicated. I see. Thanks for being verbose. If a user has installed the basic program, can I send him a package that can be loaded at statup extending the program? Only by loadlibrary calls. (which must then be in the startup), and of course the interface must be known. But in general yes. The interface will be small and I'm free to define it at will. But that doesn't solve the problems using LCL in libraries, does it? The wiki article about library packages showed that someone actually succeded in compiling the RTl to a dynlib, that may be woth a test (combined with loadlibrary). Yes, it is possible with loadlibrary. But you also must call the initialization/finalization sections manually of *all* used units in the correct order. Okay, so I can only reject that idea. My knowledge of such internals is too small to take that risk. Keep in mind that designtime packages are implemented using library packages inside Delphi. Delphi isn't recompiled for them :_) Interesting, I stopped using Delphi shortly after version 3 was out. ;) Keep in mind, that all dynamic libs must fit exactly. This means every package must be compiled and provided for every supported version. In case of Delphi this means a a new version every 1-3 years. In case of lazarus/fpc it means several versions a year multiplied by all supported platforms. And all the users that use snapshots or svn must compile the packages anyway. So dynamic libs are least useful for developers, which is why there is not much done yet. Not very attractive regarding lazarus itself ... Probably someone must provide a bounty. Maybe next time. Even if I would, the time frame for waiting on this feature and the risk with new implementations would both be too big. I'll have to try to convince anybody involved that change concept is better than use java then. :( Thanks for making things clear, Marc -- I am Microsoft of Borg. Resistance izkxGPF 0x5654 8820 Application RESIST.EXE has performed an illegal operation and will be shut down. ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] embedding fomrs into forms
Am Samstag, den 17.05.2008, 16:30 +0200 schrieb Mattias Gaertner: Putting LCL controls into a dynamic linked library is only possible with more or less dirty tricks. This is independent of nesting forms. What are these tricks? I read about shared libs in the wiki reagrding RTL/VMT duplication and having a shared memory manager. A quick test switching program and form-contaning dll to cmem did not help. My goal is to have a core programm and some additional parts delivered separately. Compiling the program for every permutation of combinations is not quite usable if the count of extras goes up. Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] embedding fomrs into forms
Am Sonntag, den 18.05.2008, 23:18 +0200 schrieb Marco van de Voort: On Sun, May 18, 2008 at 06:12:27PM +0200, Marc Santhoff wrote: Am Samstag, den 17.05.2008, 16:30 +0200 schrieb Mattias Gaertner: Putting LCL controls into a dynamic linked library is only possible with more or less dirty tricks. This is independent of nesting forms. What are these tricks? Exactly controlling the state of the RTL. Either to be exactly the same in the dynlib and the mainprogram, at least for the cases that matter. I read about shared libs in the wiki reagrding RTL/VMT duplication and having a shared memory manager. A quick test switching program and form-contaning dll to cmem did not help. That is correct, those are the most important ones. There is no end user safe way to my knowledge, just limited experiments of people that knew what they were doing. (or were lucky) So no way to go for production software (at least for me ;). My goal is to have a core programm and some additional parts delivered separately. Compiling the program for every permutation of combinations is not quite usable if the count of extras goes up. Packages is the only long term way. Unless your interface between the DLL and the program can be really limited and rigid. Then you might have luck the manual way. I don't understand, do you say, packages are dynamically loadable? I thought of them as statically linkable organizational containers. If a user has installed the basic program, can I send him a package that can be loaded at statup extending the program? Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] embedding fomrs into forms
Hi, is it possible to use a TForm inside a TForm? Imagine a program consisting of a frame and some plug-ins. The plug-ins should get designed using lazarus, each having it own form. When loaded those forms would be embedded into the main applications form as a frame, e.g. each on a tab of a notebook or similar. If it is not possible, what alternative ways of designing something like that should I consider? TIA, Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] embedding fomrs into forms
Am Samstag, den 17.05.2008, 14:15 +0200 schrieb Marc Santhoff: Hi, is it possible to use a TForm inside a TForm? Imagine a program consisting of a frame and some plug-ins. The plug-ins should get designed using lazarus, each having it own form. When loaded those forms would be embedded into the main applications form as a frame, e.g. each on a tab of a notebook or similar. Testing showed it does not work, if done like this: procedure TForm1.FormCreate(Sender: TObject); var f2: TForm; begin f2 := TForm2.Create(Panel2); f2.show; end; the secomd form is shown seperately and managed by the window manager. Using MDI didn't do it either. If it is not possible, what alternative ways of designing something like that should I consider? The last possibilities I see are streaming parts of the form myself or using the dock manager thingy. Can someone explain how docking would be done (or point me to the docs), please? Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] embedding fomrs into forms
Am Samstag, den 17.05.2008, 16:34 +0300 schrieb Kostafile:home/marc/.evolution/cache/tmp/drag-n-drop-CzHRMD/Nachrichten_von_Lazaruss Michalopoulos: It is possible. Check the Lazarus Forum for a procedure i posted a while back that embeds a form inside a TWinControl by reparenting the form controls and keeping the form itself in memory so local (in form class) variables will still work. I'll do that, thanks. However currently it is not possible to use LCL with a DLL. I tried it, in order to create a control from a DLL that will be used and it failed (crashes, etc). I don't know enough about LCL internals to say why though. Hmm, that makes the complete idea of plugins obolete somehow ... Did you link your program against the dll or was the loading done dynamically? (On *nix there is dlopen/dlclose and dlsym for dynamically loading libraries, I don't know the windows equivalent of those) Many thanks, Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] menus, buttons and actions
Hi, I'm not very often using lazarus (hoping this will change ;) and I did not find anything in the sources, so I'd like to know: Is there anything like javas action objects that can be bound to menus and buttons executing the command and managing activation state prefabricated in lazarus? TIA, Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] menus, buttons and actions
Am Freitag, den 16.05.2008, 22:08 +0200 schrieb Marc Santhoff: Hi, I'm not very often using lazarus (hoping this will change ;) and I did not find anything in the sources, so I'd like to know: Is there anything like javas action objects that can be bound to menus and buttons executing the command and managing activation state prefabricated in lazarus? Forget about it, I was spontaneously healed from temporary blindness and am using TActionList and TAction from now on. X-) Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] compiling 0.9.24 on win32 fails
Hi, at first I'd like to ask, if Windows 98 (SE) is still on the list of supported platforms. Is it? If the answer is yes notice the following report, please: make clean all: Compiling FindRenameIdentifier.pas Compiling CleanDirDlg.pas Main.pp(1110,35) Warning: Constructing a class TPkgManager with abstract metho ds Compiling resource lazarus.rc GCC.EXE: installation problem, cannot exec `cpp': No such file or directory D:\FPC\2.2.0\bin\i386-win32\windres.exe: no resources lazarus.pp(114,1) Error: Error while linking lazarus.pp(114,1) Fatal: There were 1 errors compiling module, stopping Fatal: Compilation aborted MAKE.EXE[2]: *** [lazarus.exe] Error 1 MAKE.EXE[2]: Leaving directory `D:/lazarus/ide' MAKE.EXE[1]: *** [ide] Error 2 MAKE.EXE[1]: Leaving directory `D:/lazarus/ide' D:\FPC\22~1.0\BIN\I386-W~1\MAKE.EXE: *** [ide] Error 2 D:\lazaruscpp -v GNU CPP version 2.95 19990728 (release) (80386, BSD syntax) #include ... search starts here: End of search list. The following default directories have been omitted from the search path: /gcc-2.95/lib/gcc-lib/i386-mingw32/2.95/../../../../include/g++-3 /gcc-2.95/lib/gcc-lib/i386-mingw32/2.95/../../../../include /gcc-2.95/lib/gcc-lib/i386-mingw32/2.95/../../../../i386-mingw32/include /gcc-2.95/lib/gcc-lib/i386-mingw32/2.95/include /usr/local/i386-mingw32/include End of omitted list. Versions: fpc-2.2.0.i386-win32.exe fpcbuild-2.2.0.tar.gz lazarus-0.9.24-0.tar.gz I've done: - Download the packages listed above - Installed fpc to d:\fpc\2.2.0\ (system partition and drive) - Unpacked the lazarus archive to d:\lazarus The bin directory of fpc is in the path. How can I continue? TIA, Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] compiling 0.9.24 on win32 fails
Am Dienstag, den 22.04.2008, 16:57 +0200 schrieb Bernd Mueller: Compiling resource lazarus.rc GCC.EXE: installation problem, cannot exec `cpp': No such file or directory it works for me (Win98SE), if you copy cpp.exe into the lazarus\ide directory. Thank you, so I can continue using this workaround. But still there is something fishy and some potential to shoot in the own foot, e.g. when a new version of cpp is used ... but it is zombified win98 nonetheless. Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] compiling 0.9.24 on win32 fails
Am Dienstag, den 22.04.2008, 17:06 +0200 schrieb Vincent Snijders: Marc Santhoff schreef: Hi, at first I'd like to ask, if Windows 98 (SE) is still on the list of supported platforms. Is it? Yes. But it needs special care. If the answer is yes notice the following report, please: Add D:\FPC\2.2.0\bin\i386-win32\ to your PATH I did, see the end of the problem report. or Use fpc 2.2.1 ot later. I see, so this problem is known and adressed already. Good news, thank you very much, Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] I only would like to understand...
Am Freitag, den 18.04.2008, 23:33 +0200 schrieb Vincent Snijders: Arí Ricardo Ody schreef: I posted a question about hexadecimal addresses of interruptions in FPC/Lazarus. I need to post the same questions 3 times till receive some answer. The answers was given by too guys that are in a certain view friends of mine. I think that answered because of these kind of friendship. I would like to understand why some questions are never answered here... This is not the first time I post a question and nobody answer... I'm only trying to understand. No offense. I never had to tackle that question, because if I want to have more information, I compile with -gl. Usually, if you compile with -gl, you don't need to interprete the hexadecimal addresses, because you get a file and line number. I have no explanation, why you don't have file and line number, so I cannot help you. The cause may be that only the current unit is compiled with -gl and others belonging to the project are not. In that case the switch -B for build all is helpful. fpc -gl -B main program source HTH, Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Supported Lazarus platforms
Am Freitag, den 22.02.2008, 12:44 +0200 schrieb Graeme Geldenhuys: On 22/02/2008, Marco van de Voort [EMAIL PROTECTED] wrote: Like? Note that the password stuff is now in both 2.2.1 and 2.3.x in the users package. getgrgid() - Used for getting the Group ID Name from the Group ID. getpwuid() - Used for getting the User Name from the User ID. Both of these are used in a FileGrid component (eg: File Open Dialog) to display a files User and Group names like graemeg:usersinstead of 5000:3000 My work-around for FreeBSD is to display the numeric values only. I'm thinking of looking up the values manually in /etc/groups and /etc/passwd but was told it can be inaccurate. Seems you did not read the answer I gave you on that issue: The functions getlogin(2), getpwnam(3) and getgrnam(3) should be it. Look at the man pages how to use them. (this is on freebsd 4, should not have changed moving to 6 or 7) I don't know if they are wrapped by fpc or what the names would be (maybe fpXxxx as always). But that would need ifdefs and libc, too. ;) Have fun, Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
