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Re: Can I make entries in CW_PDMENU insensitive? [message #14474 is a reply to message #14397]

Tue, 02 March 1999 00:00

davidf
Messages: 2866
Registered: September 1996

Senior Member

David Foster (foster@bial1.ucsd.edu) writes:

> David -
>
> I agree that creating pulldown menus using the /MENU keyword to
> WIDGET_BUTTON() calls is very easy, and makes your code easier
> to read and maintain (especially your event handler!).
>
> But all of the limitations of CW_PDMENU mentioned above can be
> overcome by using the IDS= keyword to return a vector of the
> widget IDs for the buttons, and then using WIDGET_CONTROL to
> manage these widgets (eg. make insensitive, assign an event-handler,
> set the uvalue, etc.).

I don't dispute this. I just argue that using the button
IDs like this will make the code significantly harder to
extend and maintain over time. Since I'm not so bright that
I think of everything I need in a program at the time I write
it, extendability and maintainability is something I prize
highly. :-)

Adding a menu item as a button, assigning an event
handler for it, and writing the new event handler
can be done in a matter of minutes, as opposed to
re-ordering my index numbers in a large event
handler, making several mistakes that introduce
other errors, etc. When it comes to programming, I
need all the help I can get.

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]

		Can I make entries in CW_PDMENU insensitive? By: Steffen Luesse on Wed, 24 February 1999 00:00
		Re: Can I make entries in CW_PDMENU insensitive? By: davidf on Wed, 03 March 1999 00:00
		Re: Can I make entries in CW_PDMENU insensitive? By: steinhh on Wed, 03 March 1999 00:00
		Re: Can I make entries in CW_PDMENU insensitive? By: davidf on Tue, 02 March 1999 00:00
		Re: Can I make entries in CW_PDMENU insensitive? By: David Foster on Tue, 02 March 1999 00:00

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