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Re: IDL objects and names [message #34053 is a reply to message #33970]

Wed, 12 February 2003 14:17

Rick Towler
Messages: 821
Registered: August 1998

Senior Member

"David Fanning" wrote
> Rick Towler writes:
>
>> FWIW, all atomic graphics objects inherit IDLgrGraphic (structure
objects do
>> not).
>
> Well, there you go. That's why you can't make an IDLgrSurfacePlot
> object:
>
> Function idlgrsurfaceplot::init
> RETURN, 1
> END
>
> PRO idlgrsurfaceplot__define
> str = {idlgrsurfaceplot, inherits idlgrsurface, inherits idlgraxis}
> end
>
> And when I try to create the object, I get this:
>
> IDL> a=obj_new('idlgrsurfaceplot')
> % Conflicting or duplicate structure tag definition: IDLITCOMPONENT_TOP.
> % Execution halted at: IDLGRSURFACEPLOT__DEFINE 6 C:\IDL\David
> \idlgrsurfaceplot__define.pro
> % OBJ_NEW
> % $MAIN$
>

I know you did this as an academic exercise to prove the point but we don't
want to mislead people into thinking they can't build complex objects from
IDL's atoms because of the inheritance issue. A composite object like this
should inherit IDLgrModel and then "Add" atoms such as the surface, axes and
text.

-Rick

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[Message index]

		IDL objects and names By: s[1] on Wed, 12 February 2003 03:32
		Re: IDL objects and names By: David Fanning on Wed, 12 February 2003 17:36
		Re: IDL objects and names By: Rick Towler on Wed, 12 February 2003 14:17
		Re: IDL objects and names By: dick on Wed, 12 February 2003 13:47
		Re: IDL objects and names By: David Fanning on Wed, 12 February 2003 13:38
		Re: IDL objects and names By: Rick Towler on Wed, 12 February 2003 12:50
		Re: IDL objects and names By: Pavel A. Romashkin on Wed, 12 February 2003 10:38
		Re: IDL objects and names By: Randall Skelton on Wed, 12 February 2003 08:42
		Re: IDL objects and names By: David Fanning on Wed, 12 February 2003 07:16
		Re: IDL objects and names By: David Fanning on Wed, 12 February 2003 07:09
		Re: IDL objects and names By: s[1] on Wed, 12 February 2003 06:37
		Re: IDL objects and names By: David Fanning on Wed, 12 February 2003 05:33

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