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Re: Source Code: A min/max compound widget [message #12936 is a reply to message #12934] Thu, 24 September 1998 00:00 Go to previous messageGo to previous message
davidf is currently offline  davidf
Messages: 2866
Registered: September 1996
Senior Member
Rose (rmlongfield@my-dejanews.com) writes:

> I am re-visiting the construction of compound widgets, having had not
> so much success a few months ago when first starting widgets. I'll probably
> be studying your program to hopefully get some ideas, in particular, the use
> of PRO_SET_VALUE and FUNC_GET_VALUE which are not very well documented. (Nor
> can I find their use anywhere on DWF's web page :( Dave seems to prefer
> using a NotifyID keyword to pass events and change things.

No, no, no. In fact, these days, ALL of my compound widgets
are written as objects. The purpose of the FUNC_GET_VALUE
for these objects is to return the "self" object, which
I can then control by means of methods. This makes it
incredibly easy to manipulate the internal widgets of
a compound widget.

I've been meaning to write an example of this, but most
of my real programs are too complex for instructional
programs, and I haven't had the time to write a simple,
but meaningful, example. I promise to do it, but I really
can't say when. :-)

Cheers,

David

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