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Re: Error in Object [message #46057 is a reply to message #46054]

Thu, 03 November 2005 09:05

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

shi_lee@hotmail.com writes:

> Hi, i am trying to set property of a IDLgrView, but i received an error.
> The code is as follows:
>
> pro demo_draw, state, oWindow, oView, debug=debug
> ....
> oView property is something i want to change. and I received an error:
> "Object reference type required in this context: OVIEW.". If instead of
> having [100,100,100] as the color, i use [state.BR, state.BB, state.BG],
> which are data saved in state structure, i receive another error:
> "Object instance data is not visible outside class methods: STATE". Does
> anyone know why? Thank you.

My guess is that you have mixed up the order in which
you passed the positional parameters to DEMO_DRAW. I think
your "state" is really the "oView", and visa versa.

Cheers,

David

P.S. Are you sure you are ready for object graphics? Lots
of complicated programming is going to have to be done there. :-)

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/

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[Message index]

		Re: Error in Object By: David Fanning on Thu, 03 November 2005 18:32
		Re: Error in Object By: IDLmastertobe on Thu, 03 November 2005 15:49
		Re: Error in Object By: David Fanning on Thu, 03 November 2005 09:05

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