Occurs whenever the drop-down list appears or disappears.
Private Subobject _DropButtonClick( ) The DropButtonClick event syntax has these parts:
|object||Required. A valid object.|
You can initiate the DropButtonClick event through code or by taking certain actions in the user interface. In code, calling the DropDown method initiates the DropButtonClick event. In the user interface, any of the following actions initiates the event:
Clicking the drop-down button on the control.
Any of the above actions, in code or in the interface, cause the drop-down box to appear on the control. The system initiates the DropButtonClick event when the drop-down box goes away.