static void
gtk_glwindow_expose_callback( GtkWidget *WXUNUSED(widget), GdkEventExpose *gdk_event, wxGLCanvas *win )
{
static void
gtk_glwindow_expose_callback( GtkWidget *WXUNUSED(widget), GdkEventExpose *gdk_event, wxGLCanvas *win )
{
g_signal_connect (m_wxwindow, "realize",
G_CALLBACK (gtk_glwindow_realized_callback),
this);
g_signal_connect (m_wxwindow, "realize",
G_CALLBACK (gtk_glwindow_realized_callback),
this);