Drag-Mode
This property specifies the drag & drop abilities of the control. Possible values are:
0
No drag & drop abilities. This is the default.
1
The user can drag content from the control. The MSG-DRAG event will be fired.
2
The user can drop content into the control. The MSG-DROP event will be fired.
3
The user can drag and drop content. The MSG-DRAG event and the MSG-DROP event will be fired respectively.