How can I disable double-buffering? or How can I draw in a drawable immediately?

[temp temp <titanogame yahoo com>]

I am trying to write a function that draws stuff in a
drawingarea immediately.
I want the images to be drawn directly when I call the
function.

What I am trying to make is something like this:

void main_function(...) //called directly after
program start
{...
My_drawing_function(...);
//the image displayed in the drawingarea has changed
getchar();
...
//exit program
}

I figured the problem comes from the double-buffering
and I tried to disable it using:
GTK_WIDGET_UNSET_FLAGS (window1,GTK_DOUBLE_BUFFERED);

But it didn't work.

So how can I disable double-buffering?
Or if the problem is coming from something else, where
is it?
Regards,
Zoidberg


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