Re: [GtkGLExt] pygtk-2.2/pygtk-2.4 and pyOpenGL

[Toon Verstraelen <Toon Verstraelen UGent be>]

Had the same problem. It was solved after upgrading from pygtkglext 
1.0.0 to 1.0.1. I didn't have any time to find out what the cause of the 
problem might be.

Martin Zohlhuber tttech com wrote:
> Hi,
>
> When using pygtk-2.2 (pygtk-2.2.0-1.win32-py2.3) together with
> pyOpenGL (PyOpenGL-2.0.1.08.py2.3-numpy23) everything
> works fine. But when using pygtk-2.4 (pygtk-2.3.96.win32-py2.3)
> I get the following traceback when calling show_all () on the 
> widget tree containing the gtk.DrawingArea:
>
> TypeError: multiple bases have instance lay-out conflict
>
> What could be the reason for this? (using gtk+-2.4.4)
>
> Unfortunately, the problem seems to have something to do with
> pyOpenGL, as the problem (the type error cited above together 
> with a segmentation fault) occurs when calling 
> gtk.gtkgl.widget_get_gl_drawable in the sample script below.
>
> The problem does not occur, when a widget delivers None as its
> gl_drawable (e.g., if widget_set_gl_capability has not been
> called).
>
> thanks for any hints !
> Martin
>
>
> import gtk
> import gtk.gtkgl
> import gtk.gdkgl
>
> def on_realize (widget, *args) :
>     print gtk.gtkgl.widget_get_gl_drawable (widget) # <-XXX segfault!
>
> # gtk-stuff:
> w = gtk.Window ()
> d = gtk.DrawingArea ()
> d.connect ("realize", on_realize)
>
> # gtkgl-stuff:
> glconfig = gtk.gdkgl.Config (mode = gtk.gdkgl.MODE_RGBA)
> gtk.gtkgl.widget_set_gl_capability (d, glconfig)
>
> w.add (d)
> w.show_all ()
>
> gtk.main ()
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