在用户最后释放鼠标按键后，当前的拖放候选对象就成为目标对象。

After a user finally releases the mouse button, the current drop candidate becomes the target.

youdao

在用户最后释放鼠标按键后，当前的拖放候选对象就成为目标对象。

After a user finally releases the mouse button, the current drop candidate becomes the target.

youdao