> To subscribers of the xforms list from spl@szechuan.ucsd.edu (Steve Lamont) :
> > This behaviour also causes `BadDrawable' in the following scenario:
> > An application handles a main form and a transient form.
> > The trancient form is composed of a canvas and a menu button.
> > The canvas has registered to receive `Expose' events.
> > One of the menu call backs causes a `fl_hide_form' on the trancient
> > form when the `Hide' item is selected. However, when the `Hide' item
> > is selected an `Expose' event is generated, but `fl_hide_form' is
> > executed before the event is received. The `Expose' handler then
> > receives the event, draws in the killed canvas window and causes a
> > `BadDrawable' error event.
This caused me alot of grief too. My workaround was to put an
fl_form_is_visible test in my expose handlers before calling any draw
routines. It seems to work.
Dick
--dick@sqf.hp.com
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