I can't find debug window,how to show console
lazarus / 12-Debugger

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vkhoa · 2014-06-22 01:36

otherwise how can I show (and hide) the console window
currently, I use a memo to display string but when error occur, I
can't view the debug string I added before the error line, is console
window can be viewed when error occur

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Rails · 2014-06-22 02:18

View/Debug Windows/Terminal Output.

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Martin_fr · 2014-06-22 03:45

On Windows, just uncheck "GUI app" in the project options. Console
depends on haw the app is build.

On linux, use the debug window.

On Mac there is none, see the wiki "console debugging"

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Leledumbo · 2014-06-22 04:53

alternatively on Windows, run with --debug-log=path\to\logfile.txt. 
See: http://wiki.freepascal.org/IDE_tricks#DebugLn_of_the_IDE_or_a_LCL
_application

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vkhoa · 2014-06-23 09:02

@Rails, I didn't find View/Debug Windows/Terminal Output but
View/Debug Windows/debug Output , anyone can answer how to write to it
@ Martin_fr, I have looked for the "GUI app" in project options but
found nothing, and another question,can I see the console when error
occur,I want to use it to debug  the program
@leledumbo, I have add '--debug-log=mylog.txt' to the lazarus
shortcut, reopen lazarus ,run the program then opened mylog.txt but
didn't see the text from debugln,the file is like to be interrupted,
it end with:
Code: [Select][TMainIDE.DoRunProject] INIT
TMainIDE.DoInitProjectRun Check build ...
TLazPackageGraph.CheckIfCurPkgOutDirNeedsCompile Last= -Fu.  -MObjFPC
-Scghi -O1 -g -gl -vewnhi -l fcllaz.pas
TLazPackageGraph.CheckIfCurPkgOutDirNeedsCompile Last=
-Fu..\..\packager\units\i386-win32;.  -MObjFPC -Scghi -O1 -g -gl
-vewnhi -l lazutils.pas
TLazPackageGraph.CheckIfCurPkgOutDirNeedsCompile Last= -MObjFPC -Scghi
-O1 -g -gl -vew -l -Fuforms;widgetset;;..\packager\units\i386-
win32;..\components\lazutils\lib\i386-win32;. -Fiinclude
alllclunits.pp
TLazPackageGraph.CheckIfCurPkgOutDirNeedsCompile Last= -MObjFPC -Scghi
-O1 -g -gl -vewnhi -l -Fuwin32;..\..\packager\units\i386-
win32;..\..\components\lazutils\lib\i386-win32;..\units\i386-win32;.
-Fiwin32 lcl.pas
TMainIDE.DoBuildProject MainBuildBoss.DoCheckIfProjectNeedsCompilation
nothing to be done
TMainIDE.DoInitProjectRun
ProgramFilename=D:\mydocument\_lazarus\kmath\math1.exe
[TMainIDE.DoRunPr

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Mike.Cornflake · 2014-06-23 09:11

There used to be a GExperts plugin for Delphi 7 that I used
extensively.  Would love something similar.

Quote@Rails, I didn't find View/Debug Windows/Terminal Output but
View/Debug Windows/debug Output , anyone can answer how to write to it
I'd love to know as well...

Quote@leledumbo, I have add '--debug-log=mylog.txt' to the lazarus
shortcut, reopen lazarus ,run the program then opened mylog.txt but
didn't see the text from debugln,the file is like to be interrupted,
it end with:Wierd.  Because my suggestion was going to be run an
equivalent of Tail pointing to that file :-(

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taazz · 2014-06-23 09:13

Quote from: vkhoa on June 23, 2014, 11:02:40 am@ Martin_fr, I have
looked for the "GUI app" in project options but found nothing, and
another question,can I see the console when error occur,I want to use
it to debug  the program

see attached screen shot.

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vkhoa · 2014-06-23 10:22

thank you all !
Now I can write text to the console

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Rails · 2014-06-23 10:43

Quote from: vkhoa on June 23, 2014, 11:02:40 am@Rails, I didn't find
View/Debug Windows/Terminal Output but View/Debug Windows/debug Output
, anyone can answer how to write to it


Sorry, I forget there are some IDE differences between Linux and
Windows. I am on Linux.

Just write to it using WriteLn or DebugLn. You will need LazLogger in
the unit's uses clause for DebugLn. Change LazLogger to lazLoggerDummy
to suppress the output.

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vkhoa · 2014-06-23 10:54

both writeln and debugln write to console, not the debug output

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BigChimp · 2014-06-23 11:06

AFAIR, you can direct writeln to write out to stderr, perhaps
something like this (untested, shamelessly adapted from
http://bugs.freepascal.org/view.php?id=17346)
Code: [Select]Var
  hstderr : ^text;
begin
  hstderr:=@stderr;
  Writeln(hstderr^,'This should be stderr.');
end;

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Rails · 2014-06-23 11:53

Quote from: vkhoa on June 23, 2014, 12:54:46 pmboth writeln and
debugln write to console, not the debug output

I just tried WriteLn and DebugLn with laz 1.2.4 Windows version
running under Wine. They wrote to Debug Output.