gtk/combo_box.go
func (v *ComboBoxText) Append(id, text string) {
	cid := C.CString(id)
	ctext := C.CString(text)
	defer C.free(unsafe.Pointer(cid))
	defer C.free(unsafe.Pointer(ctext))
	C.gtk_combo_box_text_append(v.native(), (*C.gchar)(cid), (*C.gchar)(ctext))
}
func (v *ComboBoxText) Append(id, text string) {
	cid := C.CString(id)
	ctext := C.CString(text)
	defer C.free(unsafe.Pointer(cid))
	defer C.free(unsafe.Pointer(ctext))
	C.gtk_combo_box_text_append(v.native(), (*C.gchar)(cid), (*C.gchar)(ctext))
}
// Append is a wrapper around gtk_combo_box_text_append().