This property allows you to use the control as a source for OLE drag-drop operations. If set to any of the automatic settings, the control provides the following services:

1) Detect when the mouse is near the edge of a selected cell or range and display the OLE drag cursor.

2) If the user clicks the mouse while the OLE drag cursor is displayed, initiate a drag operation with a data object containing the current selection.

In manual mode, the programmer is responsible for starting drag-drop operations using the DoDragDrop(object, DragDropEffects) method.