[Qt-interest] Problem: X Error: BadWindow (invalid Window parameter) 3 ...

[Denis Dzyubenko]

Hi Zeljko,

Zeljko wrote:
> The problem is cause I don't know what and where is happened, so how to
> write an example then ? ;)

> One thing I know is: There's no any event inside event filter when error
> starts. Maybe I should attach X11 event filter and look into ? don't
> know ...

One way to find out the source of the error might be to run your 
application with -sync command line option from inside with gdb and set 
a breakpoint inside the qt_x_errhandler function (it's inside 
src/gui/qapplication_x11.cpp) - so when the X error appears you'll be 
able to see the backtrace to find out which function caused an error and 
why.

-- 
Denis Dzyubenko
Software Engineer
Nokia, Qt Software