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Re: Urgent object question [message #28925 is a reply to message #28923]

Wed, 23 January 2002 07:06

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Ted Cary (tedcary@yahoo.com) writes:

> Mmmm... IDL_Container? Could I just subclass an IDL_Container and my
> "planet" object widget, then fill the container with all my "satellite"
> object widgets? If each satellite had an object reference to the planet or
> (better) to this very subclass containing the IDL_Container, then all of
> them could change the planet object's fields or get its fields via
> Set/GetProperty methods. Then all that's left is to override the planet
> object's methods so that they also call methods on every object in the
> IDL_Container, and there's my two-way communication.

That is the basic idea, yes. We are in the process
now of building a complicated enough system to test
whether it works or not. For us, the bottom line is
whether this system gives us advantages in maintaining
and extending large applications.

> This also solves the problem of destroying the object widgets when their
> TLBs are destroyed by the user.

Yes, containers have many advantages and this is certainly
one of them.

> It makes sense now, but I'm also very tired.

After a solid week of this we find that our ideas
*always* look wonderful about midnight. But not all
of them have survived the bright glare of morning. :-(

Cheers,

David

--
David W. Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438, E-mail: david@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: Urgent object question By: Ted Cary on Wed, 23 January 2002 07:42
		Re: Urgent object question By: mvukovic on Wed, 23 January 2002 07:20
		Re: Urgent object question By: David Fanning on Wed, 23 January 2002 07:06
		Re: Urgent object question By: Ted Cary on Tue, 22 January 2002 21:11
		Re: Urgent object question By: David Fanning on Tue, 22 January 2002 21:01
		Re: Urgent object question By: David Burridge on Thu, 24 January 2002 07:16
		Re: Urgent object question By: David Fanning on Wed, 23 January 2002 09:11

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