Re: drawing graphics

[Olexiy Avramchenko <ath beast stu cn ua>]

Ian Britten wrote:

> In addition to using a background pixmap (as suggested), I also 'attach'
> the pixmap to the window (using gdk_window_set_back_pixmap()).
> This way, you never have to deal with expose events (unless you are
> drawing stuff that isn't in your background pixmap).
>
> All in all, this give a very fast and pleasing application.  No flicker,
> no waiting for expose events to be processed, the data is always visible
> (Even when stepping through the debugger! :-) etc, etc.
> (As you've discovered, trying to draw all your data within every expose
> event is really inefficient, and grinds your app to a standstill if you
> have much data to draw....)
We almost forget to say about gtk_widget_set_double_buffered() in gtk+-2.0.
In this case you have to turn off gtk double buffering stuff, cause its 
not needed:
gtk_widget_set_double_buffered(widget, FALSE);

Olexiy