How I can do Double Buffer without OpenGL Ext?

[Gustavo Rojas <grojas icc gmail com>]

Hi,

I'm working in avoid the flicker when i paint my widget draw area. Then my
questions are the following:
How i can to do double buffer?, but without GL Ext, using just gtk draw area
and pixbuf or pixmap. And If it is posible or only can I to work double
buffer with GL Ext???.

Any idea?

Regards.


Gustavo Rojas