> Hi all, > > my FLTK (Linux)application crashes with the message: > > ../../src/xcb_io.c:249: process_responses: Assertion â(((long) > (dpy->last_request_read) â (long)(dpy->request)) <= 0)â failed. > > That happens when about 5000 lines are written into a (derived)Fl_Browser > widget that were received via a socket. > Generally writing more than 5000 lines into that browser is no problem. > The same actions done with only about hundred lines works fine. > > The environment is Ubuntu 10.04 LTS, running in a Virtual box, FLTK version > 1.1.10. > However, the Windows (XP) version works fine with 10000 lines!! > > I assume that the message comes up from the X Window system, but I have no > idea, how I can fix it or avoid it. > > Any ideas or recommendations to fix the problem? > Could it be useful to upgrade to FLTZK 1.3.0 ? > > Thanks > >
Problem solved!!! Thanks to Greg and Albrecht for their useful hints. I found several (crazy) reasons: - FLTK was not compiled with --enable-threads option - Access to the GUI was done from within a thread, too, but without a safe locking No everything works fine! Hope, that this post is useful for others. Bye Rainer
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