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Re: Clearing widget_list of all entries [message #18937]

Thu, 17 February 2000 00:00

Robert Weiss
Messages: 5
Registered: February 2000

Junior Member

David Fanning wrote:

> Robert Weiss (weiss@mpia-hd.mpg.de) writes:
>
>> Does anyone of you know a way to clear a widget_list of all items ?
>> Using widget_control with set_value doesn't work since no string arrays
>> of zero
>> length are permitted in IDL.
>
> I should think Widget_Control, listWidgetID, Set_Value="" would
> do pretty much what you want. With, perhaps, some kind of
> check in the list event handler to not respond to any
> event that generated a null string for a value.

That's quite similar to what I did already (setting sensitivity to 0 for
lists containing only an empty string)
... I just felt it would be a nice (and logical) feature for
a list widget to be "emptiable" ;-) ... AND zero length arrays would come
in handy for a couple
of other problems as well (does anyone at RSI read this newsgroup?),

however, thanks a lot,
Robert.

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		Re: Clearing widget_list of all entries By: Robert Weiss on Thu, 17 February 2000 00:00
		Re: Clearing widget_list of all entries By: davidf on Thu, 17 February 2000 00:00

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