DragnDropBegin
Function Name c:<CONTROL-NAME>#OnDragnDropBegin
Syntax   (defun c:<CONTROL-NAME>#OnDragnDropBegin (/)
)
Return Type Bitflag
Applies To Block List, Block View, DWG List, DWG Preview, Graphic Button, Hatch, Label, List Box, List View, Picture Box, Slide View, Text Button, Tree

This event is triggered when the user initiates a drag and drop operation from the control. The event handler may return an integer value to establish the types of actions that are allowed. Note that multiple actions may be combined into a single value.

Return Value Action
NIL Default
0 None
1 Copy
2 Move
4 Link