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Re: widget_list in IDL 5.1 [message #12064 is a reply to message #11934]

Thu, 11 June 1998 00:00

menakkis
Messages: 37
Registered: June 1998

Member

davidf@dfanning.com (David Fanning) wrote:
<...>
> What do some of the rest of you do? If we can get some
> kind of consensus, I'll write an article about it for my
> web page.

I haven't got round to using multiple list widgets yet, but when I do I think
I'll treat them rather like I do text and field widgets. With these sorts of
widgets I prefer not to rely on hooking decisive actions onto the widget
events for all except the simplest interfaces where the inter-dependencies
between the controls are clear to the user. I have seen the occasional
program that does various recalcs and updates several other widgets' states
while you're busy typing into a numeric field, say. These interfaces
sometimes look slick but on the other hand they're sometimes unclear. Anyway
this is more trouble than I'm prepared to go through most of the time. An
interface that has "fiddly" widgets like these will typically include one or
more other widgets (like an "OK" button or something) with a more decisive
event. I think it's usually adequate to capture (and check, etc) the current
states of all the fiddly widgets at the time that one of these decisive
events occurs. I usually try to avoid interface designs where there are
strong constraints involving the current states of "fiddly" widgets. e.g.,
Say you have a button that must only be active if there's more than 1 item
selected in a list (in the same panel). In this case I'd probably move the
list off to a dialog of its own (with OK/Cancel buttons).

Peter Mason

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[Message index]

		widget_list in IDL 5.1 By: Jonathan Rogness on Tue, 09 June 1998 00:00
		Re: widget_list in IDL 5.1 By: David Foster on Mon, 15 June 1998 00:00
		Re: widget_list in IDL 5.1 By: NOSPAM.jared on Mon, 15 June 1998 00:00
		Re: widget_list in IDL 5.1 By: J.D. Smith on Fri, 12 June 1998 00:00
		Re: widget_list in IDL 5.1 By: menakkis on Thu, 11 June 1998 00:00
		Re: widget_list in IDL 5.1 By: davidf on Wed, 10 June 1998 00:00
		Re: widget_list in IDL 5.1 By: David Foster on Wed, 10 June 1998 00:00

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