redraws (expose events) always contain an "area" to be redrawn. the parent widget should ideally only redraw the specifiied area, especially if a full redraw is expensive. your parent needs to determine which children and which (if any) background needs to be redrawn.
On Mon, Jul 29, 2013 at 4:52 AM, Виталий Кирсанов <krokozia...@gmail.com>wrote: > Hello list. > > I have two custom widgets: widget A is a container, widget B is a simple > widget. Both of them are window widgets. Widget A can contain a lot of > instances of widget B. > > The problem is when I call gtk_widget_queue_draw() for an instance of > widget B it also causes the parent widget A to get redrawn as well. > Considering that the drawing widget A depends on all of it children (i.e. > their positions and sizes) it can lead to quite an overhead which is not > needed in this case (that is if the instance of B being redrawn doesn't > change its geometry). > > So, is there a way to prevent the parent window widget A from redrawing in > case of one of its window children B gets redrawn? > > BR, Vitaly Kirsanov > skype: vkirsan > > > _______________________________________________ > gtk-list mailing list > gtk-list@gnome.org > https://mail.gnome.org/mailman/listinfo/gtk-list > >
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