FRAME_GTK_OUTER_WIDGET  456 src/pgtkterm.h #define FRAME_GTK_OUTER_WIDGET(f) (FRAME_X_OUTPUT (f)->widget)
FRAME_GTK_OUTER_WIDGET 1333 src/xterm.h    #define FRAME_GTK_OUTER_WIDGET(f) ((f)->output_data.x->widget)