Re: Muffling widget repaints

[Stephen Bach <9sjb qlink queensu ca>]

BTW, I'm writing towards GTK+ 2.4.

On Sat, Aug 21, 2004 at 02:16:52PM -0400, Stephen Bach wrote:
> Hello,
> 
> I have a container which periodically loses some of its widgets and gains
> others, sometimes on the order of hundreds.  The changeover happens all at
> once (i.e. there's a big loop which does all the adding and destroying), but
> it's still pretty ugly and slow because sometimes many repaints are done.  I
> only care about the final repaint.
> 
> Is there some way that I can prevent the intervening repaints from happening?
> I've tested hiding and reshowing the container, and it is indeed much faster,
> but of course I don't want the user to see the container disappear.  Ideally
> I'd have the "before" painting sit until the widget switch-over is done, and
> then display the "after" painting.
> 
> I was hoping gdk_window_freeze_updates() and gdk_window_thaw_updates() would
> help, but they don't seem to do anything.  As a test I even tried freezing
> the root gdk window right before calling gtk_main() (and after showing its
> widget), but the program proceeded normally.  Maybe I'm not understanding
> what these functions are for.
> 
> Any insight would be very welcome.
> 
> Thanks
> 
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