[Lazarus] Memory leak in dbgrids?
Hello, I'm migrating some programs from lazarus 0.9.30 to lazarus 1.0.8 (well, actually updating and recompiling, there's no need to migrate anything). Heaptrc is showing some memory leaks in dbgrid, though it doesn't pinpoint the line exactly. I think the leak is due to the change of type from TBookarkStr to TBookmark, and dbgrids calls GetBookmark but never calls FreeBookmark (it either discards the bookmark in local functions or assigns nil to it). I'll try calling FreeBookmark and see if the leak goes away. Bye -- Luca Olivetti Wetron Automation Technology http://www.wetron.es Tel. +34 935883004 Fax +34 935883007 -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Memory leak in dbgrids?
Al 10/05/13 09:36, En/na Luca Olivetti ha escrit: Al 10/05/13 09:13, En/na Luca Olivetti ha escrit: Hello, I'm migrating some programs from lazarus 0.9.30 to lazarus 1.0.8 (well, actually updating and recompiling, there's no need to migrate anything). Heaptrc is showing some memory leaks in dbgrid, though it doesn't pinpoint the line exactly. I think the leak is due to the change of type from TBookarkStr to TBookmark, and dbgrids calls GetBookmark but never calls FreeBookmark (it either discards the bookmark in local functions or assigns nil to it). I'll try calling FreeBookmark and see if the leak goes away. Mmh, actually it does, because FKeyBoomark is assigned nil only after clearing the list of selected records. Maybe the problem comes from the version of zeos in case it returns a different pointer for the same record? Now I made a test project using SQLdb instead of zeos and the leak is still there. It happens with multiselect, each new selection increases the non-freed block count. Bye -- Luca Olivetti Wetron Automation Technology http://www.wetron.es Tel. +34 935883004 Fax +34 935883007 -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Regressions in GTK2 interface ?
Hi, had the same problem with missing icons with GTK some time ago, I think I resolved the issue with update-mime-database ~/.local/share/mime but I can't remember exactly... d.l.i.w -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] OpenGL with Lazarus
Hello, Is there any abstraction of OpenGL for Lazarus/FPC. I am not that interested on learning OpenGL at low level, but rather use what it can provide, a bit higher level? Similar to GlScene... (Or is there Port of GlScene for Lazarus(FPC)... ) -Tee- -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] OpenGL with Lazarus
On Fri, 10 May 2013 11:47:54 +0300 Tommi Prami tommi.pr...@gmail.com wrote: Hello, Is there any abstraction of OpenGL for Lazarus/FPC. I am not that interested on learning OpenGL at low level, but rather use what it can provide, a bit higher level? Similar to GlScene... (Or is there Port of GlScene for Lazarus(FPC)... ) See here http://lmgtfy.com/?q=glscene+lazarus Mattias -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Memory leak in dbgrids?
Al 10/05/13 10:08, En/na Luca Olivetti ha escrit: Now I made a test project using SQLdb instead of zeos and the leak is still there. It happens with multiselect, each new selection increases the non-freed block count. patch with (partial) solution http://bugs.freepascal.org/view.php?id=24412 -- Luca Olivetti Wetron Automation Technology http://www.wetron.es Tel. +34 935883004 Fax +34 935883007 -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Regressions in GTK2 interface ?
I have KDE here. I found a setting for GTK applications in KDE control center but unfortunately it made no difference. I am also getting hundreds of messages like this: (lazarus:9608): Gdk-WARNING **: Attempt to draw a drawable with depth 24 to a drawable with depth 32 I guess it is related to the problem. On 5/10/13, dev.d...@gmail.com dev.d...@gmail.com wrote: update-mime-database ~/.local/share/mime The syntax was right but it made no difference either. Anyway this is not a big problem. I mostly use QT bindings myself and it works well. It is enough to know that the problem is in my machine configuration and not a bug in GTK2 bindings. Juha -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Regressions in GTK2 interface ?
Juha Manninen wrote: I have KDE here. I found a setting for GTK applications in KDE control center but unfortunately it made no difference. On 5/10/13, dev.d...@gmail.com dev.d...@gmail.com wrote: update-mime-database ~/.local/share/mime The syntax was right but it made no difference either. Anyway this is not a big problem. I mostly use QT bindings myself and it works well. It is enough to know that the problem is in my machine configuration and not a bug in GTK2 bindings. I've got a main menu with some LEDs on it as icons, x86 Debian 6 Squeeze KDE, LCL 1.1 R39139. Don't think I had to do anything outrageous to get it working on GTK2, but (from memory) it doesn't work on Qt. -- Mark Morgan Lloyd markMLl .AT. telemetry.co .DOT. uk [Opinions above are the author's, not those of his employers or colleagues] -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] GDB 7.6 Issues
Hi List. After the latest update of my Arch Linux i got a hold of GDB 7.6 and for some apparent reason debugging from within lazarus has stopped working as it should. At least there is a problem with breakpoints, since they are not always followed. If i downgrade my GDB to 7.5.1 again debugging starts working again. Have anyone else experienced this? Ps. i'm using Lazarus of trunk (rev. 41103) and fpc 2.6.2 Kind regards, Torsten B. Christiansen. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] GDB 7.6 Issues
On 10/05/2013 13:49, Torsten Bonde Christiansen wrote: Hi List. After the latest update of my Arch Linux i got a hold of GDB 7.6 and for some apparent reason debugging from within lazarus has stopped working as it should. At least there is a problem with breakpoints, since they are not always followed. If i downgrade my GDB to 7.5.1 again debugging starts working again. Have anyone else experienced this? Ps. i'm using Lazarus of trunk (rev. 41103) and fpc 2.6.2 There is a known issue (in GDB) that leads to crashes when variables are inspected (via hint/watch or otherwise) http://wiki.lazarus.freepascal.org/GDB_Debugger_Tips#Issues_with_GDB_7.5.9_or_7.6 There is another issue, if your GDB is translated (none English), see same wiki page. An issue with breakpoints is not yet known. You can produce a log (see bottom of that wiki page). But given the watches bug, even if an issue with breakpoints can be found and maybe fixed, it will not help much. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] Layered TFPImage
Hi, I need to create two or three TFPMemoryImages as a kind of layers, then flatten all layers into another TFPImage. I can copy one image onto another, by copying its pixels, but this way the background image is covered by the upper image, because its background is not transparent. What I need is a way to copy one image WITH TRANSPARENT BACKGROUND onto another. Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] android: debugln and thread
Sven Barth wrote: On 09.05.2013 15:00, Benito van der Zander wrote: I don't know for sure what the cause could be, but: do you use FPC 2.5.1 or 2.7.1? 2.7.1 Thanks. Try using __android_log_write directly instead of DebugLn to be 100% sure. Surprisingly that one works fine... Then it is at least no problem of the android port :) Perhaps there is some problem on the way from DebugLn to TCDWidgetSet.AndroidDebugLn... If you don't use a widgetset, then you cannot use widgetset functions. Marc -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] TChart - How to read first/last values from DbChartSource after zoom
Hi, I have one DBGrid and Chart(LineSeries) with same DataSource. Want to filter DBGrid's content depend Chart's zoom status. How to read the actual first/last values from Chart if it zoomed? Gabor -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TChart - How to read first/last values from DbChartSource after zoom
On Sat, May 11, 2013 at 3:19 AM, Gabor Boros gaborbo...@yahoo.com wrote: Hi, I have one DBGrid and Chart(LineSeries) with same DataSource. Want to filter DBGrid's content depend Chart's zoom status. How to read the actual first/last values from Chart if it zoomed? You can use TChart.CurrentExtent property to determine currently visible chart area. See http://wiki.lazarus.freepascal.org/TAChart_documentation#Extents -- Alexander S. Klenin -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] TFPImageCanvas and TFreeTypeFont colors
Hi, I'm writing text over TFPImageCanvas using a TFreeTypeFont, and I noted some times, the text contains wrong colors around the pixels of the text. I've attached an image to show the problem. As you can see, the text over light gray and white is adding red dots, that doesn't have to be there. The resulting image is an TFPMemoryImage composed of two TFPImageCanvas one containing the image and a 2nd one containing the text. How can I avoid those red dots?. Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com attachment: freetypefont.png-- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TFPImageCanvas and TFreeTypeFont colors
On Fri, 10 May 2013, Leonardo M. Ramé wrote: Hi, I'm writing text over TFPImageCanvas using a TFreeTypeFont, and I noted some times, the text contains wrong colors around the pixels of the text. I've attached an image to show the problem. As you can see, the text over light gray and white is adding red dots, that doesn't have to be there. The resulting image is an TFPMemoryImage composed of two TFPImageCanvas one containing the image and a 2nd one containing the text. How can I avoid those red dots?. Are you using antialiasing ? If so, try switching it off. Michael.-- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TFPImageCanvas and TFreeTypeFont colors
On 2013-05-10 20:34:00 +0200, Michael Van Canneyt wrote: On Fri, 10 May 2013, Leonardo M. Ramé wrote: Hi, I'm writing text over TFPImageCanvas using a TFreeTypeFont, and I noted some times, the text contains wrong colors around the pixels of the text. I've attached an image to show the problem. As you can see, the text over light gray and white is adding red dots, that doesn't have to be there. The resulting image is an TFPMemoryImage composed of two TFPImageCanvas one containing the image and a 2nd one containing the text. How can I avoid those red dots?. Are you using antialiasing ? If so, try switching it off. Thanks, after setting AntiAliased to false, the red dots where removed, but fonts look really ugly (like shrinked or something). Please take a look at the attached image, the font is Arial 10. -- Leonardo M. Ramé http://leonardorame.blogspot.com attachment: Captura de pantalla - 100513 - 15:37:49.png-- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TFPImageCanvas and TFreeTypeFont colors
On Fri, 10 May 2013, Leonardo M. Ramé wrote: On 2013-05-10 20:34:00 +0200, Michael Van Canneyt wrote: On Fri, 10 May 2013, Leonardo M. Ramé wrote: Hi, I'm writing text over TFPImageCanvas using a TFreeTypeFont, and I noted some times, the text contains wrong colors around the pixels of the text. I've attached an image to show the problem. As you can see, the text over light gray and white is adding red dots, that doesn't have to be there. The resulting image is an TFPMemoryImage composed of two TFPImageCanvas one containing the image and a 2nd one containing the text. How can I avoid those red dots?. Are you using antialiasing ? If so, try switching it off. Thanks, after setting AntiAliased to false, the red dots where removed, but fonts look really ugly (like shrinked or something). Please take a look at the attached image, the font is Arial 10. Strange. Did you rescale any of the images ? Michael.-- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TFPImageCanvas and TFreeTypeFont colors
On 2013-05-10 21:00:37 +0200, Michael Van Canneyt wrote: On Fri, 10 May 2013, Leonardo M. Ramé wrote: On 2013-05-10 20:34:00 +0200, Michael Van Canneyt wrote: On Fri, 10 May 2013, Leonardo M. Ramé wrote: Hi, I'm writing text over TFPImageCanvas using a TFreeTypeFont, and I noted some times, the text contains wrong colors around the pixels of the text. I've attached an image to show the problem. As you can see, the text over light gray and white is adding red dots, that doesn't have to be there. The resulting image is an TFPMemoryImage composed of two TFPImageCanvas one containing the image and a 2nd one containing the text. How can I avoid those red dots?. Are you using antialiasing ? If so, try switching it off. Thanks, after setting AntiAliased to false, the red dots where removed, but fonts look really ugly (like shrinked or something). Please take a look at the attached image, the font is Arial 10. Strange. Did you rescale any of the images ? No. I've also tested writing the image to a bmp file, but the result is the same. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TFPImageCanvas and TFreeTypeFont colors
On Fri, 10 May 2013, Leonardo M. Ramé wrote: On 2013-05-10 21:00:37 +0200, Michael Van Canneyt wrote: On Fri, 10 May 2013, Leonardo M. Ramé wrote: On 2013-05-10 20:34:00 +0200, Michael Van Canneyt wrote: On Fri, 10 May 2013, Leonardo M. Ramé wrote: Hi, I'm writing text over TFPImageCanvas using a TFreeTypeFont, and I noted some times, the text contains wrong colors around the pixels of the text. I've attached an image to show the problem. As you can see, the text over light gray and white is adding red dots, that doesn't have to be there. The resulting image is an TFPMemoryImage composed of two TFPImageCanvas one containing the image and a 2nd one containing the text. How can I avoid those red dots?. Are you using antialiasing ? If so, try switching it off. Thanks, after setting AntiAliased to false, the red dots where removed, but fonts look really ugly (like shrinked or something). Please take a look at the attached image, the font is Arial 10. Strange. Did you rescale any of the images ? No. I've also tested writing the image to a bmp file, but the result is the same. Can you produce a bitmap with just the text and see what that looks like ? Michael.-- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TFPImageCanvas and TFreeTypeFont colors
On 2013-05-10 21:29:48 +0200, Michael Van Canneyt wrote: Can you produce a bitmap with just the text and see what that looks like ? I've tried that, and the result is the same. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TFPImageCanvas and TFreeTypeFont colors
On Fri, 10 May 2013, Leonardo M. Ramé wrote: On 2013-05-10 21:29:48 +0200, Michael Van Canneyt wrote: Can you produce a bitmap with just the text and see what that looks like ? I've tried that, and the result is the same. Well. Normally TFPImage does not perform any transformation on the bitmaps that the freetype engine produces: it just copies the result to the bitmap it is treating. So if that bitmap is empty, you get what FreeType produced. So this is rather strange to hear. Unfortunately, I do not know what to advise, except debugging :( Michael.-- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TFPImageCanvas and TFreeTypeFont colors
On 2013-05-10 21:53:21 +0200, Michael Van Canneyt wrote: On Fri, 10 May 2013, Leonardo M. Ramé wrote: On 2013-05-10 21:29:48 +0200, Michael Van Canneyt wrote: Can you produce a bitmap with just the text and see what that looks like ? I've tried that, and the result is the same. Well. Normally TFPImage does not perform any transformation on the bitmaps that the freetype engine produces: it just copies the result to the bitmap it is treating. So if that bitmap is empty, you get what FreeType produced. So this is rather strange to hear. Unfortunately, I do not know what to advise, except debugging :( Well, maybe this can help. The background image is created from an RGBA 8bit pixel array, assigned to a TFPMemoryImage this way: FCanvasImage.Colors[lXPos, lYPos] := FPColor( lBlue shl 8 + lBlue, lGreen shl 8 + lGreen, lRed shl 8 + lRed, $ff shl 8 + $ff); lRed, lGreen and lBlue are of type byte, while FPColor needs word, that's why I have to do the calcs. Maybe the calcs are wrong. Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] How to disable the assembler window on Linux?
2013/5/8 Martin laza...@mfriebe.de You did not answer this. If you hit a breakpoint, do you still get the asm? Well, In Windows, if I put: procedure TForm1.Button1Click(Sender: TObject); var s: string; begin s := 'abc'; Break point here (F5) // line 1 ShowMessage(s); // line 2 end; and I use Step Over (F8), the cursor go to line 2, but the same code in Linux, go to GTK units. See: 1 - http://imagebin.org/257292 2 - http://imagebin.org/257294 (after first F8) I don't know debug code in assembler. I'm pretty sure the problem is in the IDE, because in Linux/GTK it is not able to debug a simple string variable. -- Silvio Clécio My public projects - github.com/silvioprog -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
