constants exOLEDropModeEnum

Constants for the OLEDropMode property, that defines how the control accepts OLE drag and drop operations. Use the OLEDropMode property to set how the component handles drop operations.

exOLEDropNone0 The control is not used OLE drag and drop functionality
exOLEDropManual1 The control triggers the OLE drop events, allowing the programmer to handle the OLE drop operation in code

Here's the list of events related to OLE drag and drop: OLECompleteDrag, OLEDragDrop, OLEDragOver, OLEGiveFeedback, OLESetData, OLEStartDrag.