gdk_window_show(drawingarea->inner_window); gdk_window_show(drawingarea->clip_window);
gdk_window_show_unraised(drawingarea->inner_window); gdk_window_show_unraised(drawingarea->clip_window);
moz_drawingarea_set_visibility (MozDrawingarea *drawingarea,                                gboolean visibility){    if (visibility) {        gdk_window_show(drawingarea->inner_window);        gdk_window_show(drawingarea->clip_window);    }    else    {        gdk_window_hide(drawingarea->clip_window);        gdk_window_hide(drawingarea->inner_window);    }}