Wxwidgets x11 glcanvas

Functions to modify

• src/gtk/glcanvas.cpp :

line 273 : wxGLCanvas::GetXWindow() : return a (X) Window from a GdkWindow returned GTKGetDrawingWindow() NOTE : even if we don't call it explicitly, it's used during every client program compilation -commenting it or putting between X11 #ifdefs makes undefined references - -see why