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Re: Keyboard input from widgets [message #29345 is a reply to message #29342]

Wed, 13 February 2002 08:37

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Oleg Kornilov (to_oleg@mail.ru) writes:

> I have draw widget and I use mouse events in it (cursor moving and
> buttons). I need to know also what key on keyboard was pressed (for
> example, for precision moving of mouse cursor). Problem that
> base_widget does't generate events for keyboard and draw_widget
> switches into stdin (IDL command line). Probably I can use timer
> events and get_kbrd() to check keyboard buffer.
> Is there another way ?

There are two problems with this design that come
immediately to mind. One, there is no way to get
keyboard input into a widget program without performing
a severe hack. See, for example:

http://www.dfanning.com/widget_tips/keyboard_events.html

The other is that there is no way AFAIK to programmatically
place the cursor at a particular location in a draw
widget.

Other than that, this ought to be a piece of cake. :-)

Cheers,

David

--
David W. Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438, E-mail: david@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]

		Re: Keyboard input from widgets By: Rick Towler on Wed, 13 February 2002 10:17
		Re: Keyboard input from widgets By: Pavel A. Romashkin on Wed, 13 February 2002 09:22
		Re: Keyboard input from widgets By: David Fanning on Wed, 13 February 2002 08:37

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