TTMSFNCToolBarBitmapPicker.OnBeforeDropDown Event

Fires before the drop-down popup opens. Use it to update popup content dynamically.

API unit family: TMSFNCToolBar Declaring type: TTMSFNCToolBarBitmapPicker Inherited from: TTMSFNCToolBarButton Type: TNotifyEvent

Syntax

property OnBeforeDropDown: TNotifyEvent;