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Assigns a delegate to the dropDown event.
Syntax
public final void addOnDropDown( EventHandler value )
Parameters
value
The EventHandler delegate to be notified when the event occurs.
Remarks
Passing an event handler as a parameter to this method is equivalent to setting the dropDown event to that method in the Properties window. The dropDown event occurs when the list box of a combo box is about to drop down. This event can occur only for combo boxes with drop-down lists.
See Also removeOnDropDown