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窗体的MouseDown事件过程Form_MouseDown(Button As Integer,Shift As Integer, XAsSingle,Y As Single)有4千参数，关于这些参数，正确的描述是 ______。
A．通过Button参数判定当前按下的是哪一个鼠标键
B．Shift参数只能用来确定是否按下Shift键
C．Shift参数只能用来确定是否按下Alt和Ctrl键
D．参数X，Y用来设置鼠标当前位置的坐标
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更多 “ 窗体的MouseDown事件过程Form_MouseDown(Button As Integer,Shift As Integer, XAsSingle,Y As Single)有4千参数，关于这些参数，正确的描述是 ______。A．通过Button参数判定当前按下的是哪一个鼠标键B．Shift参数只能用来确定是否按下Shift键C．Shift参数只能用来确定是否按下Alt和Ctrl键D．参数X，Y用来设置鼠标当前位置的坐标 ” 相关考题
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