void (*map_subwindow_method) (Lisp_Image_Instance *, int x, int y,
struct display_glyph_area* dga);
void (*resize_subwindow_method) (Lisp_Image_Instance *, int w, int h);
void (*map_subwindow_method) (Lisp_Image_Instance *, int x, int y,
struct display_glyph_area* dga);
void (*resize_subwindow_method) (Lisp_Image_Instance *, int w, int h);