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Widgets in OpenGL view [message #547274]

Fri, 16 July 2010 03:49

Eclipse User

Hi,

I'm investigating to know what's possible in terms of embedding native
widgets in some OpenGL view. Has it been done before? Is it possible,
for instance, to have a reactive SWT Button in an OpenGL canvas,
full-featured with event support?

Cheers,
J.-P.

Re: Widgets in OpenGL view [message #548339 is a reply to message #547274]

Wed, 21 July 2010 10:19

Eclipse User

Hi,

This is not supported. I did a quick experiment and it seemed to work on
win32 and carbon, but I think these are working by luck (and the carbon case
sometimes crashed at shutdown). It's not clear whether this could be made
to work on the other platforms, and there are not currently plans to
investigate this.

An alternate approach which should work would be to open an ON_TOP Shell
where the Control should go and to put the Control in this Shell instead.

Grant

"J.-P. Pellet" <jpp-mac@gmx.net> wrote in message
news:i1p2tj$c0g$1@build.eclipse.org...
> Hi,
>
> I'm investigating to know what's possible in terms of embedding native
> widgets in some OpenGL view. Has it been done before? Is it possible, for
> instance, to have a reactive SWT Button in an OpenGL canvas, full-featured
> with event support?
>
> Cheers,
> J.-P.

Re: Widgets in OpenGL view [message #550106 is a reply to message #548339]

Thu, 29 July 2010 03:27

Eclipse User

> An alternate approach which should work would be to open an ON_TOP Shell
> where the Control should go and to put the Control in this Shell instead.

Actually, I'm looking for a solution where I could apply OpenGL
transforms to buttons -- e.g., render them on a texture and position
this texture wherever I want. Has anything like this been done with
native widgets? Could I keep them all in some offscreen buffer, and
update their corresponding texture each time they paint?

Thanks,
J.-P.

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