[GtkGLExt] Main Window visible must be set to no

["Bruce @ OpenGL" <bruce opengl com br>]

Hi ppl,

This is my first email to this list.
Currently I'm developing a facial animation editor with OpenGL, GTK and 
LibGlade.
Surely I'm using GtkGLExt for OpenGL stuff.

My question is:
   Why GtkGlExt only works when I load a main window widget with 
LibGlade and its Visible property is set to "no" ?

If it is set to "yes" (default state), simply the 
gdk_widget_set_gl_capability doesn't work in any widget belonging to the 
main window...

Any thoughts?

[]s
Bruce Sinner