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