> The screen in my app draws correctly, and stays drawn as expected; > however, when I attempt to move graphics on the screen, I starts to > flicker in an annoying way. > > The default drawing mode in the application I am writing software for is > COPY, which is where the flicker occurs. If I change the default drawing > mode to OR, then the flicker stops, but of course with the OR mode it > draws an image and leaves it there, so when I move the cursor it leaves a > permanent trace of the object as it is being moved--hus it cannot be > released to production. > > Does anyone have any suggestions as to why I am experiencing this problem? > We have some people who use the application all complain that the flicker > causes fatigue, and so are trying to remove this problem. > > Here is a stack trace, > > No symbol table info available. > (gdb) info local > No symbol table info available. > (gdb) backtrace > #0 0x00b5d402 in __kernel_vsyscall () > #1 0x00733243 in poll () from /lib/libc.so.6 > #2 0x0328b9ca in XtAddTimeOut () from /usr/lib/libXt.so.6 > #3 0x0328bf05 in _XtWaitForSomething () from /usr/lib/libXt.so.6 > #4 0x0328cfcf in XtAppNextEvent () from /usr/lib/libXt.so.6 > #5 0x001846f8 in xvtxi_wait_for_next_event () at > /mnt/hgfs/vista/xvtdsp55/linux_x86/src/ptk/xm/xQueue.c:175 > #6 0x001abdd5 in xvtk_app_create (argc=1, argv=0xbfccf2b4, flags=0, > task_eh=0x8ca3f76 <hookWinEventHandler(unsigned int, s_event*)>, > config_p=0xbfccea88) at > /mnt/hgfs/vista/xvtdsp55/linux_x86/src/ptk/xm/xmInit.c:211 > #7 0x08daa396 in xvt_app_create (argc=1, argv=0xbfccf2b4, flags=0, > eh=0x8ca3f76 <hookWinEventHandler(unsigned int, s_event*)>, > config=0xbfccea88) at > /mnt/hgfs/vista/xvtdsp55/linux_x86/src/ptk/tapp.c:103 > #8 0x08ca5b75 in CApplication::Go (this=0x9078ae0, argc=1, > argv=0xbfccf2b4, theMenuBarId=1000, theAboutBoxId=2002, > theBaseName=0x8dcd1ea "vistawin", theApplicationName=0xbfccf000 "Seismic > Processing 2D/3D", theTaskTitle=0xbfccef06 "Seismic Processing 2D/3D > Project:") at capplctn.cpp:156 > #9 0x0805895c in main (argc=1, argv=0xbfccf2b4) at vistawin.cpp:572 > > Please note that sometimes when when I try to set breakpoints in gdb or > kdevelop in the application, it causes the whole X server to lock up. > > Do you have any suggestions?
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