comp.lang.idl-pvwave archive: archive » Re: viewport events in widget

Home » Public Forums » archive » Re: viewport events in widget_draw

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: viewport events in widget_draw [message #12025 is a reply to message #12021]

Wed, 17 June 1998 00:00

menakkis
Messages: 37
Registered: June 1998

Member

krieger@ipp.mpg.oz (Karl Krieger) wrote:
> Has anyone managed to read out viewport coordinates generated by
> a viewport scrolling event? I am using IDL 5.1 under WinNT4.0.
> Setting /viewport_events as keyword for widget_draw makes
> the widget generate events when the scroll slider bars are moved
> (event.type is 3), however, I found no way to get the actual
> viewport coordinates with respect to the plotting plane.
> event.x and event.y return zero.

When handling the viewport event (event.type eq 3), use
WIDGET_CONTROL,draw_widget_id,GET_DRAW_VIEW=dview. Dview will be returned as
"a 2-element integer array giving the X and Y position relative to the lower
left corner of the graphics area".

Peter Mason

-----== Posted via Deja News, The Leader in Internet Discussion ==-----
http://www.dejanews.com/ Now offering spam-free web-based newsreading

Report message to a moderator

[Message index]

		Re: viewport events in widget_draw By: krieger on Wed, 17 June 1998 00:00
		Re: viewport events in widget_draw By: menakkis on Wed, 17 June 1998 00:00

Previous Topic:	Domain size distribution ?
Next Topic:	Re: Q: Array of Structures

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Sun Oct 12 04:33:07 PDT 2025

Total time taken to generate the page: 2.15915 seconds