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Re: Problem with TextBox from dfanning.com [message #40460]

Wed, 11 August 2004 06:09

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Lloyd Watkin writes:

> I'm using David Fanning's widget from his website. I have come across
> a problem however. Here is my calling sequence:
>
> IFCANCELLED: ; Label if box is cancelled
> inputvalue = TextBox(Title="Please enter value:", Label=inputname,
> Cancel=cancelled, value=string(inputvalue2))
> IF (cancelled OR (inputvalue EQ "")) THEN begin
> warning = DIALOG_MESSAGE("A value must be
> entered",TITLE="Warning!")
> stop
> GOTO, IFCANCELLED
> endif
>
> The problem is that if I enter a null string or click the cancel
> button I get the following error message back out:
>
> "WIDGET_LABEL: String expression required in this contact: LABEL."
>
> I don't understand this at all! Any help on this much appreciated.

It means that whatever you have in the variable "inputname"
isn't a string. Try putting a "HELP, inputname" just before
the call the TEXTBOX to see what it is.

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/

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[Message index]

		Re: Problem with TextBox from dfanning.com By: David Fanning on Wed, 11 August 2004 06:09
		Re: Problem with TextBox from dfanning.com By: lloyd on Fri, 13 August 2004 06:57
		Re: Problem with TextBox from dfanning.com By: lloyd on Fri, 13 August 2004 06:57

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