gtk/gtk.go
func (v *Calendar) GetDate() (year, month, day uint) {
	var cyear, cmonth, cday C.guint
	C.gtk_calendar_get_date(v.native(), &cyear, &cmonth, &cday)
	return uint(cyear), uint(cmonth), uint(cday)
}
func (v *Calendar) GetDate() (year, month, day uint) {
	var cyear, cmonth, cday C.guint
	C.gtk_calendar_get_date(v.native(), &cyear, &cmonth, &cday)
	return uint(cyear), uint(cmonth), uint(cday)
}
// GetDate is a wrapper around gtk_calendar_get_date().