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Button_events and data [message #10980]

Wed, 25 February 1998 00:00

Bernard Puc
Messages: 65
Registered: January 1998

Member

Hello,

I'm looking for pointers on how to do the following: I have a line
plot in a draw widget. I want to click the pointer on the plot and have
a vertical line drawn at the nearest datapoint to the mouseclick.
widget_draw returns the cursor location in device coordinates and I
need to translate that into dataspace coordinates.
Going one step further, ideally, I'd like to have a vertical line
follow the cursor around the draw widget at all times, jumping from
datapoint to datapoint. I suspect someone has already written such a
thing...

Any help appreciated.

-Bernard Puc
puc@gsfc.nasa.gov

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[Message index]

		Button_events and data By: Bernard Puc on Wed, 25 February 1998 00:00
		Re: Button_events and data By: J.D. Smith on Thu, 26 February 1998 00:00
		Re: Button_events and data By: davidf on Wed, 25 February 1998 00:00
		Re: Button_events and data By: David L. Windt on Wed, 25 February 1998 00:00

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