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Re: widget_control from call_external [message #24010 is a reply to message #24009]

Thu, 01 March 2001 08:05

davidf
Messages: 2866
Registered: September 1996

Senior Member

dominic@work.com (dominic@work.com) writes:

> I have a c/c++ programme that is called from within a
> widget hierachy via call_external.
>
> As the computations made take fairly long, I want to update
> a status bar with a 'Percentage complete' from the C-routine,
> so the user doesn't get upset and thinks the programme died
> on him/her.
>
> How do I go about that???

Well, this will be difficult unless your can call your
C program in "chunks", or in some other way interrupt
it. It might be easier if you just know, in general,
how long it takes. Then you can set a "kitchen timer"
sort of progress indicator. As long as the cake is
baked by the time the timer goes off, no one seems
to care. :-)

You can see several ways to build such a progress
indicator here:

http://www.dfanning.com/tips/show_progress.html

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155

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[Message index]

		Re: widget_control from call_external By: John-David T. Smith on Thu, 01 March 2001 08:55
		Re: widget_control from call_external By: davidf on Thu, 01 March 2001 08:05
		sec : U Re: widget_control from call_external By: Andrew Cool on Mon, 05 March 2001 16:48

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