It's used to create shortcuts trough ALT key, you have to use one of the letter of object name/label. This property is an integer positive number. For example if a button name is "Hello word" and you want to use the ALT+H as short cut, just set the mnemonic to 1. It automatic underline the letter of the label/name.


If the number is zero, the button does not have an Alt key equivalent.

See also: mouseUp (message), button (object), acceleratorText (property),