MatrixLayout Aggregations 
You can create these aggregations only in the program code:
DRAG_SOURCE_INFO (0..1)
Aggregation for a DragSourceInfo.
DROP_TARGET_INFO (0..1)
Aggregation for a DragTargetInfo.
You can create these aggregations only in the program code:
DRAG_SOURCE_INFO (0..1)
Aggregation for a DragSourceInfo.
DROP_TARGET_INFO (0..1)
Aggregation for a DragTargetInfo.