> El 13 sep. 2022, a las 06:28, Manolo <manolo.gouy@gmail.com> escribió:
> 
> @Gonzalo: I realize now my proposal was wrong.
> The good solution is not to use a transparent GL2 window but a transparent normal window,
> see attached example program which builds upon OpenGL3test.cxx :
> 

That *almost* works.  What is missing is giving the button a transparent or semi-transparent color, like in the cube.cxx demo.  I would need that, or a FL_STENCIL on the window, so I can implement drawing in the window (with erasing with the stencil).

—
Gonzalo Garramuno
ggarra13@gmail.com




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