Sent when the mouse pointer moves into an object during a drag and drop.
# Metadata
Platforms: desktop, server OS: mac, windows, linux Introduced: 2.0 Security:
# Syntax
dragEnter
# Examples
on dragEnter -- show a green outline around the drop target set the borderColor of the target to "green" end dragEnter
# Description
Handle the dragEnter message to perform an action (for example, display a special cursor or set the acceptDrop property) when the mouse pointer enters an object.
The dragEnter message is sent only when a drag and drop operation is in progress.
If two controls overlap, a dragEnter message is sent whenever the mouse pointer crosses into a visible portion of a control. The control on the bottom receives a dragEnter message only when the mouse pointer enters part of the control that can be seen. A control that is completely hidden by another control on top of it will never receive a dragEnter message.
>*Tip:* Use the mouseLoc function to determine where the > mouse pointer is. Use the target function to determine which > control the mouse pointer has entered.
# Tags
ui,
# See
- **property:** allowableDragActions, acceptDrop - **message:** dragMove, mouseEnter, dragLeave, dragStart - **function:** mouseLoc, target - **glossary:** property, control, mouse pointer, message, drag and drop, object - **control structure:** function