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Re: background color for draw widget [message #60735 is a reply to message #60734]

Fri, 06 June 2008 09:19

cgoethel
Messages: 20
Registered: April 2008

Junior Member

On Jun 6, 9:11 am, Paul van Delst <Paul.vanDe...@noaa.gov> wrote:
> ben.bighair wrote:
>> On Jun 6, 10:16 am, cgoet...@igpp.ucla.edu wrote:
>>> Hi All, When I create a simple draw widget, the background color
>>> defaults to black. How do I change that to a light grey? Thanks for
>>> your help! Cindy
>
>> Hi,
>
>> The simplest way is to call ERASE since the draw widget contains a
>> regular old window. For example, if you are using direct graphics
>> you might do the following....
>
>> WIDGET_CONTROL, myDrawID, GET_VALUE = winID
>> WSET, winID
>> ERASE, somecolor
>
>> Depending upon how you set up backing store, you might need to refresh
>> this as the window gets covered/uncovered. Sometimes it is best to
>> let the system or IDL do that for you. BUT you have to be thoughtful
>> about this method as it won't work if you intend to ever use your
>> plotting code on a device other than a window (for example, ERASE
>> starts a new page or something like that on the PRINTER device.] If
>> you want it to be device independent you might use...
>
>> POLYFILL, [-0.01, -0.01, 1.1, 1.1, -0.01], [-0.01, 1.1, 1.1, -0.01,
>> -0.01], /NORM, COLOR = somecolor
>
>> which will draw a box of "somecolor" value over then entire window
>> (plus enough to lap over the edges).
>
> Can't you just set !P.BACKGROUND to some other colour?
>
> cheers,
>
> paulv

Thanks! I'll give it a try.

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[Message index]

		Re: background color for draw widget By: cgoethel on Fri, 06 June 2008 09:20
		Re: background color for draw widget By: cgoethel on Fri, 06 June 2008 09:19
		Re: background color for draw widget By: Paul Van Delst[1] on Fri, 06 June 2008 09:11
		Re: background color for draw widget By: ben.bighair on Fri, 06 June 2008 08:51

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