Has anyone used a pop-up menu on a GtkGLArea ?

[Jim Parker <hopeye cfl rr com>]

G'Day !

I keep getting an invalid cast error ?  Do I need to do anything special ?

Also I have set up my code to rotate my drawing and zoom in and out using
keyboard arrow keys.  Unfortuately the arrow keys scroll though all my
toolbar buttons.  Is there a simple way to retain focus on the GtkGLArea ?

cheers,
Jim Parker