Re: An odd DrawingArea problem

[Daniel Haude <dhaude PHYSnet uni-hamburg de>]

On Mon, 3 May 2004, Peter Krueger wrote:

> Hi Daniel!
> When an expose event occurs GTK will clear the affected region with the
> background color or background pixmap right before your applications
> expose callback is called.

This is actually not true; gtk clears the drawingara *after* I've
plastered something on top of it using SDL (my SDL-drawn content is only
visible as a short flash, or longer when I call sleep() before returning
from the expose_event callback). Note that GTK doesn't know about the
contents of the drawingarea's window since I'm not using GDK to draw on
it.

Anyway, I got rid of this behavior by intercepting expose events before
GDK ever sees them by using gdk_window_add_filter().

--Daniel