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Re: large custom crosshair cursor [message #56216 is a reply to message #56215]

Sun, 14 October 2007 20:55

markb77
Messages: 217
Registered: July 2006

Senior Member

Brian,

If you're using direct graphics, you can draw the lines over your
image using XOR mode, and then erase them by simply redrawing the same
lines - your image will be left unchanged. In object graphics it's
even easier because the line objects and the image object are
completely independent of each other.. In both cases it is not
necessary to redraw the whole image.

For a direct graphics example, check out the BOXAREA from the JHU
library, which you can find in Eric Deutsch's IDL Libraries Browser.

Mark

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		Re: large custom crosshair cursor By: Andrew Cool on Sun, 14 October 2007 21:02
		Re: large custom crosshair cursor By: markb77 on Sun, 14 October 2007 20:55

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