DragDrop(Source As Control,X As Single,Y As Single)

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DragDrop(Source As Control,X As Single,Y As Single)
我初学,source?

在一个完整的拖放动作（即将一个控件拖动到一个对象上,并释放鼠标按钮）完成,或使用 Drag 方法,并将其 action 参数被设置为 2 (Drop) 时,该事件发生.
语法
Private Sub Form_DragDrop(source As Control, x As Single, y As Single)
source 正在被拖动的控件.可用此参数将属性和方法包括在事件过程中 — 例如,Source.Visible = 0.
x, y 是一个指定当前鼠标指针在目标窗体或控件中水平 (x) 和垂直 (y) 位置的数字.这些坐标值通常用目标坐标系统来表示,该坐标系是通过 ScaleHeight、ScaleWidth、ScaleLeft 和 ScaleTop 属性而设置的.

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