Determines whether or not the Drag-Leave Event will be suppressed for the dialog or dialog element. If it is suppressed, the dialog or dialog element will not get control when it is defined as a drop target (see the DROP-MODE attribute) and the drag cursor leaves the area occupied by the dialog or dialog element during a drag-drop operation.

Applies to	ActiveX control, bitmap control, control box control, dialog (all types), edit area control, list box control, list view control, tree view control.
Data Type	I4
Default Value	1 (SUPPRESSED)
Possible Values	0 (NOT-SUPPRESSED) / 1 (SUPPRESSED)

Note:
You can use the symbols SUPPRESSED and NOT-SUPPRESSED defined in the local data area NGULKEY1. NGULKEY1 is automatically included in your application.