I am a bit confused... In the past I have used gtk_widget_queue_draw_area () when parts of my drawing area has changed. (http://ssalewski.de/PetEd.html.) In the gtk3-demo I just saw that gdk_window_invalidate_rect () is used. Both seems to work fine, but I have no good idea about the differences currently. Currently I was working on a toy chess program in Nim with Unicode chess board pieces... _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx https://mail.gnome.org/mailman/listinfo/gtk-list