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Re: Canceling or clearing TIMER events [message #55756 is a reply to message #55753]

Fri, 07 September 2007 08:38

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

M. Katz writes:

> The IDL Help explanation of CLEAR_EVENTS isn't clear enough to say
> whether it applies in this case. I can envision a case where the user
> closes the widget, and then the event arrives all dressed up with
> nowhere (no valid widget IDs) to go.

I would guess this is what happens. CLEAR_EVENTS will clear
events that are on the event queue, but your timer event hasn't
been dispatched to the queue yet, so it can't be cleared.

I'd say you will probably have to put a KILL_NOTIFY on
your TLB and delay destroying the widget until that last
timer event shows up.

Cheers,

David

P.S. Of course, there is always the chance that IDL is
smart enough to NOT send the timer to a widget that
doesn't exist, but I would think the chance is vanishingly
small. :-)

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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		Re: Canceling or clearing TIMER events By: Michael Galloy on Fri, 07 September 2007 10:14
		Re: Canceling or clearing TIMER events By: David Fanning on Fri, 07 September 2007 08:38

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