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RE: Widget version of BOX_CURSOR [message #3217]

Fri, 02 December 1994 20:57

dean
Messages: 55
Registered: March 1993

Member

> mallozzi@ssl.msfc.nasa.gov:
> I just tried BOX_CURSOR on a draw widget and it seems to work OK (IDL 3.6
> on a DEC Alpha). You have to do a
> c = CONVERT_COORD(x, y, /DEVICE, /TO_DATA)
> if you want the x, y, returned by BOX_CURSOR to be in data coord.
> I also use CURSOR in a widget-driven program and it seems to work fine,
> even though the IDL manual says one shouldn't use CURSOR for draw widgets.
> I would try BOX_CURSOR before working on CW_BOX_CURSOR...

CURSOR and BOX_CURSOR work fine with small displays that are around screen
size or less. I am using it now. However, grap a 3800 x 1500 or larger image
- like from explorer.arc.nasa.gov/pub/Weather/GOES-7 - and see what happens.
You will be unable to scroll around the image, it will not refresh. If you
use event.x event.y from WIDGET_DRAW instead of CURSOR, x, y - scrolling
within WIDGET_DRAW works.

Kelly Dean
CSU/CIRA

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[Message index]

		RE: Widget version of BOX_CURSOR By: dean on Fri, 02 December 1994 20:57
		RE: Widget version of BOX_CURSOR By: mallozzi on Fri, 02 December 1994 09:43
		Re: Widget version of BOX_CURSOR By: nicholas on Thu, 01 December 1994 06:00

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