Removes a handler from this event endpoint.
"selectionEvent_var" is a variable referencing a SelectionEvent object. |
"selectionEvent_var" is a variable referencing a SelectionEvent object. |
| Type | Description |
| boolean | Returns true if the handler was found and removed from the set of event handlers. |
| Name | Type | Description |
| handler | SelectionEventHandler | A SelectionEventHandler that was previously added to this event with the add method. |