| Re: Printing a widget_draw window [message #17706] |
Tue, 09 November 1999 00:00 |
davidf
Messages: 2866
Registered: September 1996
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Senior Member |
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Sean Heukels (janek@dds.nl) writes:
> I ' ve walked through the Print_It procedure, but it doesn't seem to
> work with drawn widgets. Print_It(By D. Fanning)
>
> The error I encounter, is that in the source the WSET command is set, after
> the current window is read with !D.Window. BUT....
> when in use with widget._draw, it doesn;t contain a scalar but an array
> with, as of yet, 4 scalars.
!?
I've looked at Print_It this morning. Other than being
an absolutely ancient program (first written when the
PRINTER device had no useful keywords and we were all
using 8-bit displays), there is nothing in it that would
prevent it from printing a draw widget window. I don't
know what to make of your explanation here, but I
suspect you haven't passed it the window index number
of your draw widget. Perhaps you passed it the draw
widget ID. That is a common mistake.
> Anyone used such a print function before for use in a widget ??
I can't really think of a need for one. When the
PRINT button is selected, just do a Set_Plot to
the PRINTER device and reissue whatever commands
filled up your draw widget in the first place.
It really is not any harder than that. And,
of course, the advantage is that this output will
be in printer resolution and not screen resolution. :-)
Cheers,
David
P.S. This program needs a major overhaul, but since
I don't have time for that, I just made it a bit more
sensitive to 24-bit displays. :-)
http://www.dfanning.com/tip_examples/print_it.pro
--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@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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