Inspired by $ES_NUMBER, but not limited to numbers.   May be useful for other types of controls (Combo, Edit, etc.), but not tested.   What It Does   This UDF  is for making sure only valid characters or values are entered into an Input control.   When a control is imposed for valid characters, it removes the offending characters, displays a balloon tip (similar to $ES_NUMBER), plays a beep, and waits for user activity (key press or mouse move) before the tooltip