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Re: Event when Window is activated [message #41752]

Wed, 08 December 2004 18:36

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Mark Hadfield writes:

> At least that's my understanding of the original question. But I think
> it would be more sensible to renew the sub-GUI immediately the main-GUI
> value changes. The problem then is how to tell the sub-GUI of the
> change. There are many ways to do that, depending on the program
> structure, and sending an event from the mainGUI is one of them.

Indeed. In the object widget environment I often code in,
the sub-GUI would have registered "an interest" in knowing
about things that happened in the main-GUI. When something
of importance occurs, a message is sent to all interested
parties. These messages are similar to events, although
passed directly from one widget object to another.

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/

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[Message index]

		Re: Event when Window is activated By: David Fanning on Wed, 08 December 2004 18:36
		Re: Event when Window is activated By: Mark Hadfield on Wed, 08 December 2004 15:05
		Re: Event when Window is activated By: David Fanning on Wed, 08 December 2004 09:21

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