| Function Name |
c:<CONTROL-NAME>#OnDragOverFromControl |
| Syntax
|
(defun c:<CONTROL-NAME>#OnDragOverFromControl
(ProjectName [as String]
FormName [as String]
ControlName [as String]
DropPoint [as Varies] /)
) |
| 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 Box,
Text Button,
Tree |
当用户从另一个OpenDCL控件（或从此控件）拖放操作期间将光标移动到控件上时，将触发此事件。
此函数的返回值用于确定在当前点处执行丢弃时将发生的操作类型。 ProjectName，FormName和ControlName参数标识启动拖动操作的控件。 在大多数情况下，DropPoint参数是一个2DPoint，有以下例外。
| Control Receiving Event |
DropPoint Argument |
| Tree Control with item
keys |
String (key of item at drop
point) |
| Tree Control without
item keys |
Handle (handle of item at
drop point) |
| All other controls |
2DPoint (drop point in
control client coordinates) |
| Return Value |
Behavior |
| NIL |
Default |
| 0 |
None |
| 1 |
Copy |
| 2 |
Move |
| 4 |
Link |
DragOverFromControl