set-focus-event

Arguments: dialog-item

This generic function is called when the keyboard focus moves to a control. Applications may add set-focus-event methods to handle this event for a whole subclass of controls as an alternative to writing individual on-set-focus event-handler functions for each control. Applications should not call set-focus-event.

The default method calls the on-set-focus event-handler function for the control specified by dialog-item, if it has one, and performs other internal functionality that should not be overridden.

See kill-focus-event.

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Created 2019.8.20.