What as in a Qt 4.x to 4.y version change that Qt Pixmaps could only be used in the UI thread, and no other thread. This can be considered a bug. If you wrote the code I suggest you to use QImage which can be used anywhere and convert it on the fly to QPixmap, right where you need it to render (not a perfect solution, but the only I know of right now).
Regards Bernhard Schuster 2012/2/17 James Tappin <jtap...@gmail.com>: > I have a problem running a Gtk program when using the "Qt" style as > supplied via gtk-qt-engine and kde-config-gtk-style. > > The program is a fairly heavy duty computation that uses openmp for > parallel computation and has a gtk progress monitor (which is updated > from within a "critical" section so it can never be accessed by more > than one thread at a time). When the "Qt" style is selected, the > progress bars (gtk_progress_bar) are corrupted and the errors below > are displayed repeatedly: > > (th_run:2015): Gdk-CRITICAL **: gdk_pixmap_foreign_new_for_display: > assertion `(anid != 0)' failed > > (th_run:2015): Gdk-CRITICAL **: gdk_draw_drawable: assertion > `GDK_IS_DRAWABLE (src)' failed > > (th_run:2015): GLib-GObject-CRITICAL **: g_object_unref: assertion > `G_IS_OBJECT (object)' failed > QPixmap: It is not safe to use pixmaps outside the GUI thread > QPixmap: It is not safe to use pixmaps outside the GUI thread > QPainter::begin: Paint device returned engine == 0, type: 2 > QPixmap: It is not safe to use pixmaps outside the GUI thread > QPainter::end: Painter not active, aborted > > The problem does not occur with other Gtk style settings (e.g. Nuvola). > I'm not sure if the problem is with the Qt wrapper, Gtk+ or my code. > > FWIW I'm running Debian stable, with Gtk+ 2.20. > > Any ideas? > James > _______________________________________________ > gtk-app-devel-list mailing list > gtk-app-devel-list@gnome.org > http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
