RE: draw line in gtk

[Peter Krueger <pkrueger appss de>]

On Mon, 10 May 2004, manu aradhya wrote:
> when u set callback to expose event,this callback is
> contineously called,which eats cpu time.if set a
> pixmap ,it refreshes(expose event is called) only when
> somthing  is written on the drawing area.
Hello Manu!
The expose-callback will only be called when the widget was (at least
partially) covered by another window or if it was minimized and is now
shown again. When you have redrawn the widgets contents it will not be
called again until the widget is covered and exposed again or you
explicitely tell GTK to redraw it. When your callback gets called in an
endless loop without any good reason then you're doing something terribly
wrong.

Regards,
                     Peter
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