gtk/gtk.go
func (v *MessageDialog) SetMarkup(str string) {
	cstr := C.CString(str)
	defer C.free(unsafe.Pointer(cstr))
	C.gtk_message_dialog_set_markup(v.native(), (*C.gchar)(cstr))
}
func (v *MessageDialog) SetMarkup(str string) {
	cstr := C.CString(str)
	defer C.free(unsafe.Pointer(cstr))
	C.gtk_message_dialog_set_markup(v.native(), (*C.gchar)(cstr))
}
// SetMarkup is a wrapper around gtk_message_dialog_set_markup().