Re: [Lazarus] Anyone using LCLIntf critical section routines?
Thank you! I will remove any usage of them. I understand your point. If I confirm that Lazarus has the same problem as Delphi with the pascal calling convention in CriticalSection, I will make sure the issue is reported. With best regards, Boian Mitov Mitov Software http://www.mitov.com - Original Message - From: "Felipe Monteiro de Carvalho" <[EMAIL PROTECTED]> To: "General mailing list" Sent: Sunday, June 22, 2008 6:56 PM Subject: Re: [Lazarus] Anyone using LCLIntf critical section routines? > The problem of keeping them is that we have to maintain them > (duplicating work with the fpc team) and make sure they are working, > which is not at all guaranteed today. > > About your problem, well, you could send an e-mail to the fpc mailling > list asking the fpc team to change those routines to cdecl under > windows. > > -- > Felipe Monteiro de Carvalho > ___ > Lazarus mailing list > Lazarus@lazarus.freepascal.org > http://www.lazarus.freepascal.org/mailman/listinfo/lazarus ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Advice about creating database-aware application with Lazarus
Howard Lee Harkness wrote: > Interesting... I tried your approach with MySQL, and I still could not > get edit to work. It appears to work in the grid, but stopping and > re-starting the program showed that nothing actually got edited. > > Looks like I need to take your advice and try Postgresql. However, I > won't have any significant time to work on this project until next > Sunday. Bummer. I still have the vague suspicion that the problem is > not with MySQL, but with the TNavigator component. But if MySQL simply > won't work with Lazarus, it just won't work, and I don't need to spend > the rest of the year running into the same brick wall. I am not saying that MySQL won't work, rather that Postgres has a similar 'feel' to using Oracle. All the concepts are similar. On the other hand, while I have never tried MySql, just from perusing this list, it does seem to have more problems with library versions, etc. > > This is not the only project I have in mind, of course. It's just the > first step in a much larger project, for which I would like to make > some money. So the real solution may still be to actually buy some > commercial development tools. I really wanted to make a go of using > all open-source stuff, but first I need to find something that is > ready for prime time. > > Until I can write a trivial program that displays, inserts, deletes, > and edits records in a simple database table, I have no hope whatever > of getting any farther. So far, I have not seen any evidence that this > is even possible using Lazarus and MySQL (without writing 1000 lines > of code to do all of the SQL manipulation), so the next step is to > evaluate another set of tools. It probably really is worth satisfying yourself that you can do this with a dbase (or other local) table first - it does work. > > What I REALLY wanted was to be able to drop some components on a form > (connection, query, datasource, dbgrid, and dbnavigator), and link > them together with some properties, and have it work without writing a > lick of code -- just like I once did with Delphi 3 over a decade ago. > So far, Lazarus has not caught up with D3, much less D6. To be fair, while you could do what you are saying with simple stuff into local (dbase/paradox) tables, I can't ever remember being able to do that in 'Real World' applications using Delphi 4 C/S into Oracle, of which I did quite a bit. > > Hmm... I need to spend some time looking for my old copy of D3 and see > if it will even run on XP. It will - I even have Delphi 1 running on XP (don't ask why !) as well as using D4 extensively on it, due to some applications that use paradox dbs. > > (snip) > Cheers, John Sunderland ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Anyone using LCLIntf critical section routines?
The problem of keeping them is that we have to maintain them (duplicating work with the fpc team) and make sure they are working, which is not at all guaranteed today. About your problem, well, you could send an e-mail to the fpc mailling list asking the fpc team to change those routines to cdecl under windows. -- Felipe Monteiro de Carvalho ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Advice about creating database-aware application with Lazarus
Interesting... I tried your approach with MySQL, and I still could not get edit to work. It appears to work in the grid, but stopping and re-starting the program showed that nothing actually got edited. Looks like I need to take your advice and try Postgresql. However, I won't have any significant time to work on this project until next Sunday. Bummer. I still have the vague suspicion that the problem is not with MySQL, but with the TNavigator component. But if MySQL simply won't work with Lazarus, it just won't work, and I don't need to spend the rest of the year running into the same brick wall. This is not the only project I have in mind, of course. It's just the first step in a much larger project, for which I would like to make some money. So the real solution may still be to actually buy some commercial development tools. I really wanted to make a go of using all open-source stuff, but first I need to find something that is ready for prime time. Until I can write a trivial program that displays, inserts, deletes, and edits records in a simple database table, I have no hope whatever of getting any farther. So far, I have not seen any evidence that this is even possible using Lazarus and MySQL (without writing 1000 lines of code to do all of the SQL manipulation), so the next step is to evaluate another set of tools. What I REALLY wanted was to be able to drop some components on a form (connection, query, datasource, dbgrid, and dbnavigator), and link them together with some properties, and have it work without writing a lick of code -- just like I once did with Delphi 3 over a decade ago. So far, Lazarus has not caught up with D3, much less D6. Hmm... I need to spend some time looking for my old copy of D3 and see if it will even run on XP. On Sun, Jun 22, 2008 at 6:52 PM, John <[EMAIL PROTECTED]> wrote: > Howard Lee Harkness wrote: > > Hmmm... looks like TDBF doesn't have any way to load my tables without > > writing yet another program. And dBase tables? I think I will check > > out SQLite first. I picked on MySQL by recommendation from some folks > > telling me how it was a mature db with all of the features I was used > > to from working with Oracle. It was certainly easier to set up than > > FireBird -- and better documented. > > > > I suppose also that I could write all of the insert/delete/edit code, > > but I didn't have to do that in Delphi 10 years ago. The DbNavigator > > just worked with no additional code at all. > > > If you come from an Oracle background, consider Postgresql. I had an > Oracle background too, and felt immediately at home with PG. On the > other hand, dBase tables work fine for simple, single user tables, with > less fuss than SQL. It depends on what you are trying to do. > > I admit I always use an external tool to build the tables. In > postresql, pgadmin; for dbase tables an old copy of DBase it self (yes, > I have one!) or DBD from Dephi. > > Also, since I am writing, in looking through your last example or two, > there doesn't seem to be any transaction.commit ? This is needed in PG, > I presume in MySQL as well. > > My basic test database program had a PQConnection, SQLTranaction, > SQLQuery (select * from ...), and the usual set of data-aware controls - > grid, navigator, edit fields, etc - connected to the query, all set up > at design time as you would in Delphi. The only code was in a 'commit' > button: > > procedure TForm1.BitBtn1Click(Sender: TObject); > begin > SQLQuery1.ApplyUpdates; > SQLTransaction1.CommitRetaining; > end; > > cheers, > John Sunderland > ___ > Lazarus mailing list > Lazarus@lazarus.freepascal.org > http://www.lazarus.freepascal.org/mailman/listinfo/lazarus > -- Howard Lee Harkness ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Advice about creating database-aware application with Lazarus
Howard Lee Harkness wrote: > Hmmm... looks like TDBF doesn't have any way to load my tables without > writing yet another program. And dBase tables? I think I will check > out SQLite first. I picked on MySQL by recommendation from some folks > telling me how it was a mature db with all of the features I was used > to from working with Oracle. It was certainly easier to set up than > FireBird -- and better documented. > > I suppose also that I could write all of the insert/delete/edit code, > but I didn't have to do that in Delphi 10 years ago. The DbNavigator > just worked with no additional code at all. > If you come from an Oracle background, consider Postgresql. I had an Oracle background too, and felt immediately at home with PG. On the other hand, dBase tables work fine for simple, single user tables, with less fuss than SQL. It depends on what you are trying to do. I admit I always use an external tool to build the tables. In postresql, pgadmin; for dbase tables an old copy of DBase it self (yes, I have one!) or DBD from Dephi. Also, since I am writing, in looking through your last example or two, there doesn't seem to be any transaction.commit ? This is needed in PG, I presume in MySQL as well. My basic test database program had a PQConnection, SQLTranaction, SQLQuery (select * from ...), and the usual set of data-aware controls - grid, navigator, edit fields, etc - connected to the query, all set up at design time as you would in Delphi. The only code was in a 'commit' button: procedure TForm1.BitBtn1Click(Sender: TObject); begin SQLQuery1.ApplyUpdates; SQLTransaction1.CommitRetaining; end; cheers, John Sunderland ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] [lazarus] Advice about creating database-aware application with Lazarus
> > I also tried putting the ApplyUpdates in the FormClose > event, and that > didn't do anything, either. > > You are the one that mentioned that I needed to call > ApplyUpdates (and > later, disable and enable controls). Could you please take > a look at the > code I posted and SHOW ME what I need to do to make this > work? > -- > Howard Lee > Harkness Most TDataset components have one OnAfterPost event, if the intent is commit changes as soon as they get posted this might help. Jesus Reyes A. Yahoo! Deportes Beta ¡No te pierdas lo último sobre el torneo clausura 2008! Entérate aquí http://deportes.yahoo.com ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] WinCE - Printing - PCL
I need to print from a WinCE app to a HP PCL compatible printer. Any suggestion? - Leslie -___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Anyone using LCLIntf critical section routines?
Hi Felipe, We use them for code compatibility with Delphi. Windows threads do not tolerate non "cdecl" Delphi calling conventions insade them, so we are forced to use Win32 API critical sections to work around this problem. We have not tested enough yet to see if the same problem exists in Lazarus. If the problem is confirmed the CriticalSection Enter/Leave routines may have to be changed to be "cdecl" (at least under Windows) for Windows system threads compatibility. Becouse of this problem I have seen number of Delphi libraryes use Win32 API CriticalSection routines instead of the SyncObjs object. If you decide the functions are not needed, we can create our own CriticalSection wrapper, and call the Win32 API when using Delphi and the TCriticalSection from SyncObjs in Lazarus. You may however still consider keeping them for making it easier for other developers to port from existing Delphi code. I must admit however that there are not so many heavily threaded applications and libraries. The only ones I have seen having this "cdecl" problem are multimedia (both DirectShow and VFW) calls and the "timeSetEvent" timers. This probably will have relatively small effect on the overall number of libraries and Delphi applications, so you can probably safely remove it, with limited effect. I don't have any serious objections, and if you plan the removal will start modifying our code to use our own wrapper. With best regards, Boian Mitov Mitov Software http://www.mitov.com - Original Message - From: "Felipe Monteiro de Carvalho" <[EMAIL PROTECTED]> To: "General mailing list" Sent: Sunday, June 22, 2008 11:35 AM Subject: [Lazarus] Anyone using LCLIntf critical section routines? > Hello, > > We are considering removing the critical section routines in LCLIntf, > because there is already a TCriticalSection in the RTL in the SyncObjs > unit. > > If noone objects, and proves that those routines are useful for > something in 1 week, we will remove them. > > thanks, > -- > Felipe Monteiro de Carvalho > ___ > Lazarus mailing list > Lazarus@lazarus.freepascal.org > http://www.lazarus.freepascal.org/mailman/listinfo/lazarus ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] [lazarus] Advice about creating database-aware application with Lazarus
Ok I added the Post call (for some reason, I thought the DbNavigator did that automatically, but apparently not if you implement the click handler. So now I have: procedure TForm1.DBNavigator1Click(Sender: TObject; Button: TDBNavButtonType); begin case Button of nbEdit: begin SQLQuery1.Edit; end; nbPost: begin SQLQuery1.Post; SQLQuery1.DisableControls; SQLQuery1.ApplyUpdates; SQLQuery1.EnableControls; end; nbRefresh: begin SQLQuery1.Close; SQLQuery1.Open; end; end; end; Inch by incredible inch. I can now insert and delete, but edit still does nothing, even though it appears to until I stop and restart the program. On Sun, Jun 22, 2008 at 1:22 PM, Howard Lee Harkness < [EMAIL PROTECTED]> wrote: > On Sun, Jun 22, 2008 at 9:03 AM, Joost van der Sluis <[EMAIL PROTECTED]> > wrote: > >> My question is why you did DBNavigator1Click at all? On nbPost, it >> should call - first of all - SQLQuery1.Post. You forgot that. (I guess >> that that's your edit-problem) Normally, if you don't implement >> DBNavigator1Click it will do that automatically. >> >> Well, without some place to put the ApplyUpdates call, nothing gets > changed in the database. When I tried not implementing the > DBNavigator1Click, the program appeared to be working, but the database > never actually changed. > > I also tried putting the ApplyUpdates in the FormClose event, and that > didn't do anything, either. > > You are the one that mentioned that I needed to call ApplyUpdates (and > later, disable and enable controls). Could you please take a look at the > code I posted and SHOW ME what I need to do to make this work? > -- > Howard Lee Harkness > -- Howard Lee Harkness ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] SQLite - WinCe
> You could document some of your findings here: > > http://wiki.lazarus.freepascal.org/WinCE_Programming_Tips I will, but first I am going to send them to the mailing list to find out their worth (I would not want to reinvent the wheel) and if they can be corrected. > The only thing that I know about sqlite and lazarus is that there are > some problems with it in fpc 2.2.0, so I would try 2.2.2 if I were > you. I forgot to mention my cfg: Lazarus Snapshot 2008.06.18 with Fpc 2.2.2RC1 + the Arm-Wince snapshot from the same date. - Leslie - ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Mac OS X : Cross compiling from i386 -> PowerPC
Dominique Louis schreef: > Vincent Snijders wrote: >> You are supposed to use the latest release version of the fpc compiler >> or the SVN head of a development version. > > Hi Vincent, >All the code is from the SVN or does "SVN head of a development > version" mean something else? svn head means the current revision. So if you are using a svn version of fpc, and you run into a lazarus problem, first update your fpc svn version and try that. Vincent ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Mac OS X : Cross compiling from i386 -> PowerPC
Felipe Monteiro de Carvalho wrote: > On Sun, Jun 22, 2008 at 3:07 PM, Dominique Louis > <[EMAIL PROTECTED]> wrote: >> I could not find the specific packages > > lazarus/components/printers > >> so I did a make all using the >> ppcppc compiler and when I do that I get the following compilation error >> Fatal: Can't find unit MacOSAll used by CarbonInt >> >> Am I not supposed to be able to do a >> make all LCL_PLATFORM=carbon >> and target the ppcppc compiler? > > make all won't compile the printers package AFAIK. And it will compile > the Lazarus IDE. Doesn't look like a good idea. > > make bigide will build both the IDE and printers. > > anyway, if you really want to build in the command line I would try > setting TARGET_CPU=powerpc The IDE allows me to compile the Printers4Laz package for PowerPC, but does not do anything if I try to compile the LCL from within the ide. From the command line using sudo make bidgide LCL_PLATFORM=carbon CPU_TARGET=powerpc FPC=/usr/local/bin/ppcppc OPT="-k-framework -kcarbon -k-framework -kOpenGL" produces the.. Fatal : Can't find unit MacOSAll used by CarbonInt error I mentioned before. Dominique. ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Mac OS X : Cross compiling from i386 -> PowerPC
On Sun, Jun 22, 2008 at 4:34 PM, Dominique Louis <[EMAIL PROTECTED]> wrote: > All the code is from the SVN or does "SVN head of a development > version" mean something else? The problem is that in Free Pascal 2.2.1 the FPCMacOSAll unit was renamed to MacOSAll. 2.2.1 is a development version, and thus changing over time. You got this error because you are using an old FPC 2.2.1 -- Felipe Monteiro de Carvalho ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] [lazarus] Advice about creating database-aware application with Lazarus
Hmmm... looks like TDBF doesn't have any way to load my tables without writing yet another program. And dBase tables? I think I will check out SQLite first. I picked on MySQL by recommendation from some folks telling me how it was a mature db with all of the features I was used to from working with Oracle. It was certainly easier to set up than FireBird -- and better documented. I suppose also that I could write all of the insert/delete/edit code, but I didn't have to do that in Delphi 10 years ago. The DbNavigator just worked with no additional code at all. On Sat, Jun 21, 2008 at 9:21 PM, Felipe Monteiro de Carvalho < [EMAIL PROTECTED]> wrote: > 2008/6/21 Howard Lee Harkness <[EMAIL PROTECTED]>: > > No, I don't care what database is underneath. > > Well so I think that you made a bad choice starting with a more > complex dataset (MySQL) with a known problem. I had supposed that you > needed to use MySQL. > > I would recommend that you start with TDBF instead. I'm 100% sure this > one works. > > http://wiki.lazarus.freepascal.org/Lazarus_Tdbf_Tutorial > > -- > Felipe Monteiro de Carvalho > ___ > Lazarus mailing list > Lazarus@lazarus.freepascal.org > http://www.lazarus.freepascal.org/mailman/listinfo/lazarus > -- Howard Lee Harkness ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Mac OS X : Cross compiling from i386 -> PowerPC
Vincent Snijders wrote: > You are supposed to use the latest release version of the fpc compiler > or the SVN head of a development version. Hi Vincent, All the code is from the SVN or does "SVN head of a development version" mean something else? Dominique. ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] [lazarus] Advice about creating database-aware application with Lazarus
Oh, and I *don't* want to applyupdates on the AfterScroll event unless that is the only choice. On Sun, Jun 22, 2008 at 2:22 PM, Howard Lee Harkness < [EMAIL PROTECTED]> wrote: > On Sun, Jun 22, 2008 at 9:03 AM, Joost van der Sluis <[EMAIL PROTECTED]> > wrote: > >> My question is why you did DBNavigator1Click at all? On nbPost, it >> should call - first of all - SQLQuery1.Post. You forgot that. (I guess >> that that's your edit-problem) Normally, if you don't implement >> DBNavigator1Click it will do that automatically. >> >> Well, without some place to put the ApplyUpdates call, nothing gets > changed in the database. When I tried not implementing the > DBNavigator1Click, the program appeared to be working, but the database > never actually changed. > > I also tried putting the ApplyUpdates in the FormClose event, and that > didn't do anything, either. > > You are the one that mentioned that I needed to call ApplyUpdates (and > later, disable and enable controls). Could you please take a look at the > code I posted and SHOW ME what I need to do to make this work? > -- > Howard Lee Harkness > -- Howard Lee Harkness ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] [lazarus] Advice about creating database-aware application with Lazarus
On Sun, Jun 22, 2008 at 9:03 AM, Joost van der Sluis <[EMAIL PROTECTED]> wrote: > My question is why you did DBNavigator1Click at all? On nbPost, it > should call - first of all - SQLQuery1.Post. You forgot that. (I guess > that that's your edit-problem) Normally, if you don't implement > DBNavigator1Click it will do that automatically. > > Well, without some place to put the ApplyUpdates call, nothing gets changed in the database. When I tried not implementing the DBNavigator1Click, the program appeared to be working, but the database never actually changed. I also tried putting the ApplyUpdates in the FormClose event, and that didn't do anything, either. You are the one that mentioned that I needed to call ApplyUpdates (and later, disable and enable controls). Could you please take a look at the code I posted and SHOW ME what I need to do to make this work? -- Howard Lee Harkness ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] SQLite - WinCe
On Sun, Jun 22, 2008 at 3:32 PM, Joost van der Sluis <[EMAIL PROTECTED]> wrote: > That's probably because messageboxes do not work. (in my experience) > Place the .open in a try-except-block and catch the error message. > That's how I did it. They work if you are using subversion Lazarus. http://wiki.lazarus.freepascal.org/Windows_CE_Development_Notes#Modal_Dialogs_and_the_OK_and_X_buttons -- Felipe Monteiro de Carvalho ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Graphics changes (r15472)
> Yes, you cannot change the size of an Icon, since an icon contains on or > more images of different sizes/depths > > Use Icon.Add() to add a new image with given size and depth, then use > TIcon.Current to select the wanted image. > > Marc Cannot this be done transparently so it won't break the code? Even with a boolean property to enable/disable this, it would be nice. Or if not, make width and size read-only. IMHO it is a bad surprise for the user to get this exception when the object allows the assignment of width and height fields. Of course this isn't a high priority thing or anything, but it looks more "polished" i think :-) Kostas ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Mac OS X : Cross compiling from i386 -> PowerPC
Dominique Louis schreef: > Hi Felipe, >I could not find the specific packages so I did a make all using the > ppcppc compiler and when I do that I get the following compilation error > Fatal: Can't find unit MacOSAll used by CarbonInt > > Am I not supposed to be able to do a > make all LCL_PLATFORM=carbon > and target the ppcppc compiler? > You are supposed to use the latest release version of the fpc compiler or the SVN head of a development version. Vincent ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] Anyone using LCLIntf critical section routines?
Hello, We are considering removing the critical section routines in LCLIntf, because there is already a TCriticalSection in the RTL in the SyncObjs unit. If noone objects, and proves that those routines are useful for something in 1 week, we will remove them. thanks, -- Felipe Monteiro de Carvalho ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] SQLite - WinCe
Op zondag 22-06-2008 om 19:41 uur [tijdzone +0200], schreef [EMAIL PROTECTED]: > I am testing SQLite under WinCE. A few notes: > > - When the db file is in a shared folder linked to the Emulator, it > cannot be opened. Needs to becopied to an internal folder. This may > have nothing to do with Lazarus, but might be a useful peace of > information anyway. Hmm. That could explain somethings. I think it's somewhat different. In my experience the application made an database-file, but it coudn't be seen on the host-os. I guess there's some synchonise-issue. > - SQLite3Connection does not raise an exception when it cannot > connect. Connected becomes "true" no matter what. That's probably because messageboxes do not work. (in my experience) Place the .open in a try-except-block and catch the error message. That's how I did it. > - Opening a SQLQuery raises Bus error or "misaligned data". Update to a recent fpc version. (2.2.2rc1 or later) > - Sqlite3Dataset: Loading a less then 2MByte dataset takes around 15 > seconds in the emulator on a Centrino Dothan 1.6 CPU. Is this the > speed to expect, or Sqlite3Dataset needs to be checked? Changing folders did also take a few seconds here. Try it on a real device... Joost. ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Mac OS X : Cross compiling from i386 -> PowerPC
On Sun, Jun 22, 2008 at 3:07 PM, Dominique Louis <[EMAIL PROTECTED]> wrote: > I could not find the specific packages lazarus/components/printers > so I did a make all using the > ppcppc compiler and when I do that I get the following compilation error > Fatal: Can't find unit MacOSAll used by CarbonInt > > Am I not supposed to be able to do a > make all LCL_PLATFORM=carbon > and target the ppcppc compiler? make all won't compile the printers package AFAIK. And it will compile the Lazarus IDE. Doesn't look like a good idea. make bigide will build both the IDE and printers. anyway, if you really want to build in the command line I would try setting TARGET_CPU=powerpc -- Felipe Monteiro de Carvalho ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Graphics changes (r15472)
Marc Weustink wrote: > Kostas Michalopoulos wrote: Yeah, this pretty much destroyed the material thumbnails in my 3D design app. Any workaround or this will come back soon? :-) >>> Revert to r15471 >>> >>> Marc >> That, or make a patch :-P. >> >> I've attached my fix. Seems that TCustomBitmap.SetSize was doing nothing >> except filling some values in a TDIBSection which weren't used. I kept >> them there (because i didn't tracked where they're actually used), but >> also wrote code that updates the width/height info in FImage.Description >> and allocates data for the pixels. I use RawimageNeeded too to obtain a >> valid description (i just put the new width and height there). >> >> This makes both the autocompletion and changing TBitmap size code to work. > > autocompletion ?? > > anyway, I need to think about this. Setting the width/height might be an > issue of TRasterImage too. Allocation of data is not needed (yet) > > About the DIBsection, that code will be removed and gets replaced by the > rawimage. Should be fixed now in r15510 Marc ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Mac OS X : Cross compiling from i386 -> PowerPC
Hi Felipe, I could not find the specific packages so I did a make all using the ppcppc compiler and when I do that I get the following compilation error Fatal: Can't find unit MacOSAll used by CarbonInt Am I not supposed to be able to do a make all LCL_PLATFORM=carbon and target the ppcppc compiler? Dominique. Felipe Monteiro de Carvalho wrote: > On Sat, Jun 21, 2008 at 9:51 PM, Dominique Louis > <[EMAIL PROTECTED]> wrote: >> Hi gurus, >> I'm trying to compile a Carbon application for PowerPC from an i386 >> Mac OS X box. The i386 code compiles fine, but when I try and target >> PowerPC I get an "Can't find unit Printer4Lazarus used by MyApp" error. >> >> Any ideas? > > Open the Printer4Lazarus package. Go to Compiler Options. Set target > processor and build. > > The same for LCL ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] SQLite - WinCe
You could document some of your findings here: http://wiki.lazarus.freepascal.org/WinCE_Programming_Tips The only thing that I know about sqlite and lazarus is that there are some problems with it in fpc 2.2.0, so I would try 2.2.2 if I were you. thanks, -- Felipe Monteiro de Carvalho ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Printing a formatted page
On Sun, Jun 22, 2008 at 7:24 PM, Felipe Monteiro de Carvalho > What do you need? Just the size of the paper? The whole lot. I want to write a letter to someone who's name is in a database. So It's got to say: Dear $Title $Firstname $Surname, Re yours of the inst. $Date etc, ect. (I'm just using Perl variables to show the structure of the letter - obviously in Pascal you don't preface variables with $) Also to print out Invioces and Reciepts. It's actually for Student registration, letters of acceptance, Courses taken, price of each course, etc... > If you are using "normal" paper, you can let LCL calculate the size >by > simply giving the paper name to it: Mostly just A4 pages. > You will have a lot of difficulty to communicate with OpenOffice. Yes, I realise that. I've had a look at the format of OpenOffice documents and I think it would not be trivial to convert such a document into a format that I could use to print a page with TPrinter.Canvas. That's why I was thinking of Postscript and PCL. > What is PCL? PCL = Printer Control Language (IIRC) It used to be the language to control old style plottters (with up to eight pens!), and I think it was an IBM standard. > I am building a CNC Machine, and I also need to read data from > an external software. I analised Postscript and I arrived to the > conclusion that it is too complex to build a Postscript interpreter > (Postscript is a full programming language!). Yeah, I know! I did a lot of work in Postscript some years ago, but I don't remember enough about it to confidently try and convert a PS file. The problem is that it uses a lot of recursion and popping and pushing functions onto a stack so that it becomes quite complicated to read. However, a lot of people have done a lot of stuff with PS, so I was hoping there was something out there I could use... > We have decided now to build a PDF reading library for Free > Pascal. We should start working on it in a few months. Good luck! ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] SQLite - WinCe
I am testing SQLite under WinCE. A few notes: - When the db file is in a shared folder linked to the Emulator, it cannot be opened. Needs to becopied to an internal folder. This may have nothing to do with Lazarus, but might be a useful peace of information anyway. - SQLite3Connection does not raise an exception when it cannot connect. Connected becomes "true" no matter what. - Opening a SQLQuery raises Bus error or "misaligned data". - Sqlite3Dataset: Loading a less then 2MByte dataset takes around 15 seconds in the emulator on a Centrino Dothan 1.6 CPU. Is this the speed to expect, or Sqlite3Dataset needs to be checked? - Leslie - ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Printing a formatted page
On Sun, Jun 22, 2008 at 12:58 PM, Dave Coventry <[EMAIL PROTECTED]> wrote: > Currently I have to measure the page I want to print and use the > Canvas draw commands to draw the page. If anything changes I have to > measure the page again and input the data in terms of lineto, moveto > and textout methods. What do you need? Just the size of the paper? If you are using "normal" paper, you can let LCL calculate the size by simply giving the paper name to it: uses Printers; Printer.papersize.papername := 'A4'; PaperWorkRect := Printer.PaperSize.PaperRect.WorkRect; // This holds the printable area of the paper Printer.PaperSize.PaperRect.PhysicalRect holds the entire paper, including areas that the printer won't be able to print to. Example of printing using this: Printer.BeginDoc; Printer.Canvas.TextOut(PaperWorkRect.Left, PaperWorkRect.Top, 'TextOut'); Printer.EndDoc; You can use TPrinterDialog to let the user choose the paper. Printer.papersize.papername will be automatically updated. I am writing about this in the Lazarus book. > What I'm hoping to do is to format the page using OpenOffice and then > convert this to moveto, lineto, textout, etc. You will have a lot of difficulty to communicate with OpenOffice. > PCL uses similar methods, penup, pendown, etc; maybe I could format > the page and output it to PCL and then convert the PCL to > TPrinter.Canvas functions? What is PCL? > Maybe even Postscript? I used to have the > old Adobe "Postscript Cookbook". If I could just find it again... I am building a CNC Machine, and I also need to read data from an external software. I analised Postscript and I arrived to the conclusion that it is too complex to build a Postscript interpreter (Postscript is a full programming language!). We have decided now to build a PDF reading library for Free Pascal. We should start working on it in a few months. -- Felipe Monteiro de Carvalho ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Obtaining TIDesigner
On Sunday 22 June 2008 14.20:30 Boian Mitov wrote: > I still stand by my statement that this so called "optimization" is a > design bug in FPC. Of course this is just my opinion, and you guys can > disagree. That is no problem, as long as there are work around etc ;-) . > Only the time will tell who is right. My prediction is that the so called > "optimization" will lead to so many problems overtime that at some point it > will be removed, and the interfaces will start working as they in all other > languages I have used, or nobody will use Interfaces in FPC, but I may be > wrong ;-) . We will see :-D . > Interfaces are used extensive in MSEide+MSEgui - the non reference counted Free Pascal "Corba" interfaces which Delphi does not provide. There were many workarounds necessary to let MSEgui compile and work with Delphi... Martin ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Printing a formatted page
You need like as MetaFile in Delphi, did you try TPostScriptCanvas in "pscanvas" unit, i am not test it in fact. On Sun, Jun 22, 2008 at 6:58 PM, Dave Coventry <[EMAIL PROTECTED]> wrote: > On Sun, Jun 22, 2008 at 5:30 PM, Felipe Monteiro de Carvalho > <[EMAIL PROTECTED]> wrote: >> What do you mean by RTF? > > RTF = Rich Text Format > >> Could you explain better what you are trying to do? > > I want my app to generate printed forms and letters. > > Currently I have to measure the page I want to print and use the > Canvas draw commands to draw the page. If anything changes I have to > measure the page again and input the data in terms of lineto, moveto > and textout methods. > > What I'm hoping to do is to format the page using OpenOffice and then > convert this to moveto, lineto, textout, etc. > > PCL uses similar methods, penup, pendown, etc; maybe I could format > the page and output it to PCL and then convert the PCL to > TPrinter.Canvas functions? Maybe even Postscript? I used to have the > old Adobe "Postscript Cookbook". If I could just find it again... > ___ > Lazarus mailing list > Lazarus@lazarus.freepascal.org > http://www.lazarus.freepascal.org/mailman/listinfo/lazarus > -- Zaher Dirkey ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Printing a formatted page
On Sun, Jun 22, 2008 at 5:30 PM, Felipe Monteiro de Carvalho <[EMAIL PROTECTED]> wrote: > What do you mean by RTF? RTF = Rich Text Format > Could you explain better what you are trying to do? I want my app to generate printed forms and letters. Currently I have to measure the page I want to print and use the Canvas draw commands to draw the page. If anything changes I have to measure the page again and input the data in terms of lineto, moveto and textout methods. What I'm hoping to do is to format the page using OpenOffice and then convert this to moveto, lineto, textout, etc. PCL uses similar methods, penup, pendown, etc; maybe I could format the page and output it to PCL and then convert the PCL to TPrinter.Canvas functions? Maybe even Postscript? I used to have the old Adobe "Postscript Cookbook". If I could just find it again... ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Printing a formatted page
What do you mean by RTF? Could you explain better what you are trying to do? -- Felipe Monteiro de Carvalho ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] [lazarus] Advice about creating database-aware application with Lazarus
Op zaterdag 21-06-2008 om 20:06 uur [tijdzone -0600], schreef Howard Lee Harkness: > At that point, I could insert a record, but not edit or delete a > record. So, I tried the following: > > procedure TForm1.DBNavigator1Click(Sender: TObject; Button: > TDBNavButtonType); > begin > case Button of > nbDelete, > nbPost: begin > SQLQuery1.DisableControls; > SQLQuery1.ApplyUpdates; > SQLQuery1.EnableControls; > end; > nbRefresh: begin > SQLQuery1.Close; > SQLQuery1.Open; > end; > end; > end; > > Lo, and behold! I could now insert a record, and delete a record!!! > Elated, I tried the following: My question is why you did DBNavigator1Click at all? On nbPost, it should call - first of all - SQLQuery1.Post. You forgot that. (I guess that that's your edit-problem) Normally, if you don't implement DBNavigator1Click it will do that automatically. If you want the changed to be committed to the underlying database immediately (Is that a good design?) then you can add the disable-apply-enable sequence to the SQLQuery1.AfterScroll event. Then you don't need the DBNavigator1Click-hack. Joost ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Need some help with UpdateSQL in TSQLQuery and TMySQL50Connection
You can disregard this mail, in the mean time most issues are cleared out. ;) Joost. Op zondag 22-06-2008 om 15:48 uur [tijdzone +0200], schreef Joost van der Sluis: > Op zaterdag 21-06-2008 om 14:04 uur [tijdzone -0500], schreef Howard Lee > Harkness: > > On Thu, Jun 19, 2008 at 8:22 AM, Joost van der Sluis <[EMAIL PROTECTED]> > > wrote: > > Op zaterdag 14-06-2008 om 16:06 uur [tijdzone -0500], schreef > > Howard Lee > > Harkness: > > > > > However, it doesn't seem to matter what I put in for > > nbDelete. I > > > always get the error "There are no fields found to generate > > the > > > where-clause" if I do ApplyUpdates for nbDelete. If I put > > nothing in > > > there, the field appears to be deleted, but it is still in > > the table, > > > and comes back to the grid when I press "refresh". > > > > > Yes, and yes. See the code that I posted at the beginning of the > > thread -- if you see a problem with the code , please tell me what I'm > > doing wrong, or not doing right. There is definitely something wrong > > with it, because it doesn't work. If I left something out, tell me and > > I can just zip up the whole project and email it to you. > > Sorry, but with the code you've sent, it's truely impossible to get the > error-message you claim that you got. There even is no 'ApplyUpdates' in > your code. That code is completely irrelevent - it's the code of an empy > program. > > Please, don't send puzzles to us, we can't help you if you do. > > For an example look at the fpc-code: packages/fcl-db/sqldb/examples > > Joost. > > > ___ > Lazarus mailing list > Lazarus@lazarus.freepascal.org > http://www.lazarus.freepascal.org/mailman/listinfo/lazarus > -- ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] [lazarus] Advice about creating database-aware application with Lazarus
Op zaterdag 21-06-2008 om 17:05 uur [tijdzone -0500], schreef Howard Lee Harkness: > > Seems to me that I should have been able to get a program as trivial > as the one I am trying to write running with stuff that was available > two years ago. Kinda makes me wonder if I'm just trying to use the > wrong tools. Yes, you are. You are using MySQL for a non-web-based application. ;) Joost. ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Need some help with UpdateSQL in TSQLQuery and TMySQL50Connection
Op zaterdag 21-06-2008 om 14:04 uur [tijdzone -0500], schreef Howard Lee Harkness: > On Thu, Jun 19, 2008 at 8:22 AM, Joost van der Sluis <[EMAIL PROTECTED]> > wrote: > Op zaterdag 14-06-2008 om 16:06 uur [tijdzone -0500], schreef > Howard Lee > Harkness: > > > However, it doesn't seem to matter what I put in for > nbDelete. I > > always get the error "There are no fields found to generate > the > > where-clause" if I do ApplyUpdates for nbDelete. If I put > nothing in > > there, the field appears to be deleted, but it is still in > the table, > > and comes back to the grid when I press "refresh". > > Yes, and yes. See the code that I posted at the beginning of the > thread -- if you see a problem with the code , please tell me what I'm > doing wrong, or not doing right. There is definitely something wrong > with it, because it doesn't work. If I left something out, tell me and > I can just zip up the whole project and email it to you. Sorry, but with the code you've sent, it's truely impossible to get the error-message you claim that you got. There even is no 'ApplyUpdates' in your code. That code is completely irrelevent - it's the code of an empy program. Please, don't send puzzles to us, we can't help you if you do. For an example look at the fpc-code: packages/fcl-db/sqldb/examples Joost. ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Obtaining TIDesigner
I guess, you don't believe it ;-) . Everybody is free to believe or not. Our products however are real and available for download, and are free for non commercial purposes. If you have any doubt, you can always check, and see that they do exist. And they use interfaces to both work with the Delphi OTA, and to control DirectShow graphs, and other Windows API interfaces. We also have a library for OPC, but it is not officially released. OPC is also COM based. The libraries also employ interfaces heavily to deliver buffers, and perform thread synchronization. With best regards, Boian Mitov Mitov Software http://www.mitov.com - Original Message - From: "Florian Klaempfl" <[EMAIL PROTECTED]> To: "General mailing list" Sent: Sunday, June 22, 2008 6:10 AM Subject: Re: [Lazarus] Obtaining TIDesigner > Everybody is free to post any page on the web. > ___ > Lazarus mailing list > Lazarus@lazarus.freepascal.org > http://www.lazarus.freepascal.org/mailman/listinfo/lazarus ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Obtaining TIDesigner
Outdated, but shows some of the history. Sorry, haven't updated it in the last few years ;-) . http://www.mitov.com/My_Resume/my_resume.html With best regards, Boian Mitov Mitov Software http://www.mitov.com - Original Message - From: "Florian Klaempfl" <[EMAIL PROTECTED]> To: "General mailing list" Sent: Sunday, June 22, 2008 5:50 AM Subject: Re: [Lazarus] Obtaining TIDesigner > > What did you use so far? DOS batch files? Maybe listen to things people > tell you. > ___ > Lazarus mailing list > Lazarus@lazarus.freepascal.org > http://www.lazarus.freepascal.org/mailman/listinfo/lazarus ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Obtaining TIDesigner
Sorry, this is the full list: a.. Visual C# 2005 b.. Visual Basic 2005 c.. Visual C++/CLI 2005 d.. Visual J# 2005 e.. Delphi 5 f.. Delphi 6 g.. Delphi 7 h.. Delphi 2005 i.. C++ Builder 5 j.. C++ Builder 6 k.. BDS 2006 / Delphi 2006 / C++ Builder 2006 l.. Turbo Delphi 2006 m.. Turbo C++ 2006 n.. Delphi 2007 o.. C++ Builder 2007 p.. RAD Studio 2007 q.. Visual C++ 6.0 (MFC)/Win32 r.. Visual C++ 2003 (MFC)/Win32 s.. Visual C++ 2005 (MFC)/Win32 t.. Lazarus is comming (Win32/Win64/Linux) With best regards, Boian Mitov Mitov Software http://www.mitov.com - Original Message - From: "Florian Klaempfl" <[EMAIL PROTECTED]> To: "General mailing list" Sent: Sunday, June 22, 2008 5:50 AM Subject: Re: [Lazarus] Obtaining TIDesigner > What did you use so far? DOS batch files? Maybe listen to things people > tell you. > ___ > Lazarus mailing list > Lazarus@lazarus.freepascal.org > http://www.lazarus.freepascal.org/mailman/listinfo/lazarus ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Obtaining TIDesigner
Boian Mitov schrieb: > Outdated, but shows some of the history. Everybody is free to post any page on the web. ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Obtaining TIDesigner
The list of platforms we currently support: a.. Delphi 5 b.. Delphi 6 c.. Delphi 7 d.. Delphi 2005 e.. C++ Builder 5 f.. C++ Builder 6 g.. BDS 2006 / Delphi 2006 / C++ Builder 2006 h.. Turbo Delphi 2006 i.. Turbo C++ 2006 j.. Delphi 2007 k.. C++ Builder 2007 l.. RAD Studio 2007 http://www.mitov.com/html/videolab.html Probably I do have a bit of experience with different environments after all :-D . With best regards, Boian Mitov Mitov Software http://www.mitov.com - Original Message - From: "Florian Klaempfl" <[EMAIL PROTECTED]> To: "General mailing list" Sent: Sunday, June 22, 2008 5:50 AM Subject: Re: [Lazarus] Obtaining TIDesigner > What did you use so far? DOS batch files? Maybe listen to things people > tell you. > ___ > Lazarus mailing list > Lazarus@lazarus.freepascal.org > http://www.lazarus.freepascal.org/mailman/listinfo/lazarus ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Obtaining TIDesigner
Something to cheer you up guys ;-) . Here is a snapshot of our current progress. You can see that all the runtime libraries are already ported and recompiled, and the OpenWire design time basic functionality is mostly operational: http://www.mitov.com/LazarusProgress.jpg The PlotLab and SignalLab are fully 100% functional ;-) . AudioLab and VideoLab are ~80% ready too, missing only the platform specific capture and recording/playback components. We are looking at GStreamer for the Linux side, but we will see... With best regards, Boian Mitov Mitov Software http://www.mitov.com ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Obtaining TIDesigner
Boian Mitov schrieb: > I still stand by my statement that this so called "optimization" is a > design bug in FPC. Of course this is just my opinion, and you guys can > disagree. That is no problem, as long as there are work around etc ;-) . > Only the time will tell who is right. My prediction is that the so called > "optimization" will lead to so many problems overtime that at some point it > will be removed, and the interfaces will start working as they in all other > languages I have used, What did you use so far? DOS batch files? Maybe listen to things people tell you. ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Obtaining TIDesigner
On Sun, Jun 22, 2008 at 05:11:12AM -0700, Boian Mitov wrote: > Thank you! A bit closer IDE integration will surely help us maintain > components both for Delphi and Lazarus ;-) . We do support D5-2007 and we > are aware of the changes overtime. > > Unfortunately the "optimization", I have renders the Interfaces virtually > useless in Lazarus :-( . Since there is a simple workaround (move the relevant block to a local procedure that declares the interface reference), I think this is a _little_ bit exaggerated. >The lifespan of the interfaces is now unpredictable "implementation defined" is the word you are looking for. > Sad, considering the enormous power interfaces offer in Delphi. Hmm, I never was that happy with the ref counted interfaces. An interface and pseudo garbage collection are two different things IMHO. ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Obtaining TIDesigner
On Sun, Jun 22, 2008 at 05:20:30AM -0700, Boian Mitov wrote: > I still stand by my statement that this so called "optimization" is a > design bug in FPC. For which you provided no prove than a non applicable statement in the C++ spec (which dealt with compiler generated temps) > Of course this is just my opinion, and you guys can disagree. Which in itself would be ok, but then please don't try to bring it up in each and every unrelated discussion. > That is no problem, as long as there are work around etc ;-) . Move the relevant code to a local procedure. > Only the time will tell who is right. My prediction is that the so called > "optimization" will lead to so many problems overtime that at some point it > will be removed, and the interfaces will start working as they in all other > languages I have used, or nobody will use Interfaces in FPC, but I may be > wrong ;-) Another failure in providing some evidence. We can't change behaviour like this on emotion. ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Obtaining TIDesigner
I mean a bit more Delphi similar implementation. With best regards, Boian Mitov Mitov Software http://www.mitov.com - Original Message - > Thank you! A bit closer IDE integration will surely help us maintain ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Obtaining TIDesigner
I still stand by my statement that this so called "optimization" is a design bug in FPC. Of course this is just my opinion, and you guys can disagree. That is no problem, as long as there are work around etc ;-) . Only the time will tell who is right. My prediction is that the so called "optimization" will lead to so many problems overtime that at some point it will be removed, and the interfaces will start working as they in all other languages I have used, or nobody will use Interfaces in FPC, but I may be wrong ;-) . We will see :-D . With best regards, Boian Mitov Mitov Software http://www.mitov.com - Original Message - From: "Marco van de Voort" <[EMAIL PROTECTED]> To: "General mailing list" Sent: Sunday, June 22, 2008 5:00 AM Subject: Re: [Lazarus] Obtaining TIDesigner > However your problems touch one of the cores of Delphi > compability, if somebody abuses something in _one_ delphi version, and it > works, does that mean that FPC has to carry that Delphi bug indefinitely, > and let performance suffer? I think not. > ___ > Lazarus mailing list > Lazarus@lazarus.freepascal.org > http://www.lazarus.freepascal.org/mailman/listinfo/lazarus ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] [lazarus] Advice about creating database-aware application with Lazarus
Felipe Monteiro de Carvalho schreef: > 2008/6/21 Howard Lee Harkness <[EMAIL PROTECTED]>: >> Guess I'll try 2.2.2rc1, but it looks like in order to do that, I have to >> install Lazarus 0.9.25 beta. > > Nothing should prevent you from using Lazarus 0.9.24 with FPC 2.2.2rc1 > I did not test it, but I think you cannot compiler an older Lazarus with a newer fpc version. See the svn logs since Lazarus 0.9.24 for commit messages like 'fixed compilation for fpc 2.3.1'. If those changes in fpc 2.3.1 are merged to fpc 2.2.1, which is not unreasonable, that you will need those fixes made in Lazarus 0.9.25 to compile with fpc 2.2.2rc1. Vincent ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Obtaining TIDesigner
Hi Mattias, Thank you! A bit closer IDE integration will surely help us maintain components both for Delphi and Lazarus ;-) . We do support D5-2007 and we are aware of the changes overtime. Unfortunately the "optimization", I have renders the Interfaces virtually useless in Lazarus :-( . The lifespan of the interfaces is now unpredictable and left for the optimization to decide, and that allows for only limited types of objects to be maintained trough Interfaces. Anything that relies on resources other than memory practically will be dangerous to be used trough interfaces similar to the issues in the GC environments :-( . Sad, considering the enormous power interfaces offer in Delphi. With best regards, Boian Mitov Mitov Software http://www.mitov.com - Original Message - From: "Mattias Gaertner" <[EMAIL PROTECTED]> To: Sent: Sunday, June 22, 2008 4:51 AM Subject: Re: [Lazarus] Obtaining TIDesigner > About "FPC optimization": > I'm happy that the FPC team does not do Delphi compatibility at any > cost. > > > Mattias > ___ > Lazarus mailing list > Lazarus@lazarus.freepascal.org > http://www.lazarus.freepascal.org/mailman/listinfo/lazarus ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Obtaining TIDesigner
On Sun, Jun 22, 2008 at 03:10:19AM -0700, Boian Mitov wrote: > Thank you! I have also found another work around in my properties, but this > will help. What are the reasons for so many differences in the Design time > interfaces from Delphi ? Are those legal or technical issues? I also notice > that there is practically no usage of Interfaces. Interfaces came later. Both in Delphi (D4) and FPC (2.0) > Is this because of the strange way FPC works with interfaces (what they > call "optimization"), or some other reason? Interfaces work fine. Even horrible interface abusing stuff like DECAL has worked for ages. However your problems touch one of the cores of Delphi compability, if somebody abuses something in _one_ delphi version, and it works, does that mean that FPC has to carry that Delphi bug indefinitely, and let performance suffer? I think not. ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Obtaining TIDesigner
On Sun, 22 Jun 2008 03:10:19 -0700 "Boian Mitov" <[EMAIL PROTECTED]> wrote: > Hi Mattias, > > Thank you! I have also found another work around in my properties, > but this will help. What are the reasons for so many differences in > the Design time interfaces from Delphi ? Delphi changed their design time API often and the IDE works different than Delphi. IDE compatibility was never the goal. > Are those legal or technical issues? Both. > I also notice that there is practically no usage of > Interfaces. Is this because of the strange way FPC works with > interfaces (what they call "optimization"), or some other reason? There were no interfaces when lazarus was started. There are a few candidates, where interfaces could be more useful than classes. Maybe they will change eventually. IMO Delphi used interfaces mainly because of licensing issues, closed source, patents, dll hell. About "FPC optimization": I'm happy that the FPC team does not do Delphi compatibility at any cost. Mattias ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Obtaining TIDesigner
Hi Mattias, Thank you! I have also found another work around in my properties, but this will help. What are the reasons for so many differences in the Design time interfaces from Delphi ? Are those legal or technical issues? I also notice that there is practically no usage of Interfaces. Is this because of the strange way FPC works with interfaces (what they call "optimization"), or some other reason? With best regards, Boian Mitov Mitov Software http://www.mitov.com - Original Message - From: "Mattias Gaertner" <[EMAIL PROTECTED]> To: Sent: Sunday, June 22, 2008 2:55 AM Subject: Re: [Lazarus] Obtaining TIDesigner > > Designer:=FindRootDesigner(PropertyHook.LookupRoot); > > Keep in mind that there is not always a designer. > > Mattias > ___ > Lazarus mailing list > Lazarus@lazarus.freepascal.org > http://www.lazarus.freepascal.org/mailman/listinfo/lazarus ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Obtaining TIDesigner
On Sat, 21 Jun 2008 18:10:04 -0700 "Boian Mitov" <[EMAIL PROTECTED]> wrote: > Hi folks, > > I am new to Lazarus, and still learning the ropes, so I am probably > missing something. I am porting a component suite, and I while the > runtime packages migration went very smooth the design time packages, > no surprise, have to be largely rewritten from scratch. > > I am trying to figure out how to obtain TIDesigner from TPersistent? > If the TPersistent is component it is straight forward: > > Temp := GetPersistentReference; > if Temp is TComponent then begin > AComponent:=TComponent(Temp); > Designer:=FindRootDesigner(AComponent); > > However I am writing editor for a class type property, and need to > obtain the designer for it. In Delphi the designers are always > available in the property editor. How to get the designer in Lazarus > for a TPersistent inherited class properties. How to do that? Designer:=FindRootDesigner(PropertyHook.LookupRoot); Keep in mind that there is not always a designer. Mattias ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
