Any time you find that many your event handlers use the same code, you can make your application more efficient by moving the repeated code into a routine that all event handlers can share.

1. Add the method declaration to the form object. You can add the declaration in either the public or private parts at the end of the form object's declaration. If the code is just sharing the details of handling some events, it's probably safest to make the shared method private.
2. Write the method implementation in the implementation part of the form unit.

The header for the method implementation must match the declaration exactly, with the same parameters in the same order.