OGL, Transparent Region

I'm making diagrams with wxOGL. I connect shapes with lines and the lines have names, so I use line.AddText("name").
The problem is that the shape region created with this appears over the line and I wanted to make it transparent. I used region.SetBrush(wx.TRANSPARENT_BRUSH) but I get an exception because the shaperegion doesn't have the method SetBrush().
Any comment?

Thanks in advance to all the people of the list.
David Asensio Ortega

···

_________________________________________________________________
Dale rienda suelta a tu tiempo libre. Encuentra mil ideas para exprimir tu ocio con MSN Entretenimiento. http://entretenimiento.msn.es/