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Re: testing for SHIFT key being pressed [message #11750 is a reply to message #11749]

Fri, 15 May 1998 00:00

davidf
Messages: 2866
Registered: September 1996

Senior Member

Calum McLean (cmclean@holyrood.ed.ac.uk) writes:

> Is there any mechanism for testing whether SHIFT is being pressed?
> I have found the 'get_kbrd' command, which will do this for all the
> alpha-numeric characters, but not SHIFT.
>
> My particular requirement is to be able to test for SHIFT & LEFT MOUSE
> BUTTON being pressed simultaneously, to add 'preserve aspect ratio'
> to a rubberband box routine.

Alas, IDL doesn't permit this kind of functionality, although
it has been asked for so often that it must be close to the
top of the list by now. I usually implement this kind
of functionality by using the left button for normal
selection and the right button for "aspect" selection.

Cheers,

David

-----------------------------------------------------------
David Fanning, Ph.D.
Fanning Software Consulting
E-Mail: davidf@dfanning.com
Phone: 970-221-0438
Coyote's Guide to IDL Programming: http://www.dfanning.com/

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		Re: testing for SHIFT key being pressed By: cmclean on Fri, 15 May 1998 00:00
		Re: testing for SHIFT key being pressed By: davidf on Fri, 15 May 1998 00:00

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