EditCalc control looks by default like on the picture below. It allows user to type single line texts and mathematical expressions calculated automatically. If AutoCalculate property is true, typed expression will be calculated automatically on losing keyboard focus. If CalculateOnReturn property is true, typed expression will be calculated on pressing and releasing Return key. Otherwise, typed expression can be calculated programmatically using
Calculate() method. If typed expression is invalid or has unsupported function, text won't be changed.