Hi guys, I am running GGL(Google Gadgets for Linux) based Gadget on my embedded linux platform, and it runs on Gtk+(gtk+-2.16.0)/DirectFB, now i encounter some flicker problem as follows:
1, If i move my mouse from one button to another button on the gadget, the gadget flickers 2, If i move the mouse off the gadget, or make mouse entry into the gadget, it flickers too I've made some investigations: 1, the gadget flickers for redrawing, since we got the expose-event 2, the redrawing process is as follows: 1) calling gdk_window_begin_paint_region() in gdk/gdkwindow.c 2) then gdk_window_impl_directfb_begin_paint_region() in gdk/directfb/gdkwindow-directfb.c 3) next GGL expose-event handler is called 4) then run gdk_window_end_paint() in gdk/gdkwindow.c 5) last gdk_window_impl_directfb_end_paint() in gdk/directfb/gdkwindow-directfb.c 3, I tried to make some modifications but without getting any positive results My question is: 1, it flickers for repeating redrawing the black-background and the gadget, agreed? 2, it is the expose-event that triggers the redrawing process, but we just move the mouse? or why expose event take places together with mouse motion event? 3, is it for the gtk_propagate_event() in gtk/gtkmain.c? how to fix it? It is greatly appreciated if you could give me some clues:) Many thanks, Tony
_______________________________________________ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list
