## The `onUnfocus' callback

Event number: 8
Generated for: Window, Form, Dialog, Document, and any control which can have the input focus
Synonym: onDeactivate

The `onUnfocus` callback is called when an object loses the input focus (either because the user has done something, or under program control). It is typically used to validate user input in Edit controls.

Topic: APLX Help : System Classes : Callbacks : onUnFocus

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