X Window System error
lazarus / 32-Linux

----------------------------------------------------------------------
Timewarp · 2014-07-30 10:01

png testsuite (tools menu) crashes if select "basn0g01 - black &
white"

Same happens if try to load that png to TImage component.

Xubuntu 14.04, Lazarus svn / FPC2.6.4. (in windows it's fine). Others
see this?
Code: [Select]timewarp@tw:~/lazarus/test/manual/png$ ./project1
The program 'project1' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadMatch (invalid parameter attributes)'.
  (Details: serial 3242 error_code 8 request_code 62 minor_code 0)
  (Note to programmers: normally, X errors are reported
asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error()
function.)
timewarp@tw:~/lazarus/test/manual/png$

----------------------------------------------------------------------
Graeme · 2014-07-30 18:41

Can you post some sample code and the test image.

----------------------------------------------------------------------
Timewarp · 2014-07-30 19:07

It's in Lazarus testsuite, file:
..\Lazarus\test\manual\png\testsuite\basn0g01.png

----------------------------------------------------------------------
Graeme · 2014-07-30 20:00

Quote from: Timewarp on July 30, 2014, 09:07:20 pmIt's in Lazarus
testsuite, file: ..\Lazarus\test\manual\png\testsuite\basn0g01.png
Thanks. Yes I get the same error as you. I then tested with fpGUI's
image loading support, which uses FPC's fcl-image for PNG images. I
could load and display the basn0g01.png file without problems. See
attached screenshot.

So it seems there must be a bug in LCL-GTK, or in LCL itself. I
haven't tested LCL-Qt as I don't have it set up here. I suggest you
file a bug report in Mantis.

----------------------------------------------------------------------
jc99 · 2015-06-04 12:43

Did you file a report Yet ?
otherwise see :
http://bugs.freepascal.org/view.php?id=21589
and
http://bugs.freepascal.org/view.php?id=28098