|Code||Can be called by||定義|
|16||4D Write Pro area - Button - Button Grid - Check Box - Dropdown list - Form - Hierarchical List - Input - List Box - List Box Column - Picture Button - Picture Pop up menu - Plug-in Area - Progress Indicators - Radio Button - Ruler - Spinner - Splitter - Stepper - Tab control||Data has been dropped onto an object|
On Drop event is sent once to the destination object when the mouse pointer is released over the object. This event is the second phase of the drag-and-drop operation, in which you perform an operation in response to the user action.
This event is not sent to the object if the drag was not accepted during the
On Drag Over events. If you process the
On Drag Over event for an object and reject a drag, the
On Drop event does not occur. Thus, if during the
On Drag Over event you have tested the data type compatibility between the source and destination objects and have accepted a possible drop, you do not need to re-test the data during the
On Drop. You already know that the data is suitable for the destination object.