假定编写如下事件过程： Private Sub Form_MouseDown(Button As Integer,Shift As Integer,X As Single，Y As Single) If(Button and 3)=3 then Print"Hello" End if End Sub 程序运行后，为了在窗体上输出“Hello”，应该窗体上执行以下( )操作。

A．只能按下左键并拖动

B．只能按下右键并拖动

C．必须同时按下左、右键并拖动

D．按下左键拖动或按下右键拖动

[单选题]假定编写了如下事件过程： Private Sub Form_MouseDown(Button As Integer，Shift As Integer，X As Single， Y As Single) If Button=2 Then Print "aaaa" End If End Sub 程序运行后，为了在窗体上输出“AAAA”，应按下的鼠标键为A．左键B．右键C．同时按下左、右键D．按什么键都不显示

[单选题]假定有如下事件过程:Private Sub Form_MouseDown(Button As Integer,Shift As Integer,x As Single)If Button=2 ThenPopupMenu popForm.E．nd IfE．nd Sub则以下描述中错误的是A．该过程的功能是弹出一个菜单B．popForm是在菜单编辑器中定义的弹出式菜单的名称C．参数x、y指明鼠标的当前位置D．Button=2表示按下的是鼠标左键

[单选题]编写如下事件过程： Private Sub Form_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single) If Shift=6 And Button=2 then Print"BBBB" End If End Sub 程序运行后，为了在窗体上输出“BBBB”，应执行的操作为______。A．同时按下Shift键和鼠标左键B．同时按下Shift键和鼠标右键C．同时按下Ctrl、Alt键和鼠标左键D．同

[单选题]编写如下事件过程： Private Sub Form_MouseDown(Button As Integer，Shift As Integer，X As Single，Y As Single) If Shift=6 And Button=2 Then Print"BBBB" End If End Sub 程序运行后，为了在窗体上输出“BBBB”，应执行的操作为 ______。A．同时按下Shift键和鼠标左键B．同时按下Shift键和鼠标右键C．同时按下Ctrl、Alt键和鼠标左键D．同时按

[单选题]编写如下事件过程: Private Sub Form_ MouseDown (Button As Integer, Shift As Integer, X As Single, Y As Single) If Shift = 6 And Button = 2 Then Print “Hello” End If End Sub 程序运行后，为了在窗体上输出“Hello”，应在窗体上执行以下______ 操作。A．同时按下Shift键和鼠标左按钮．B．同时按下Shift键和鼠标右按钮C．同时按下Ct

[单选题]编写如下事件过程； Private Sub Form_ MouseDown (Button As Integer, Shift As Integer, X As Single, Y As SinglE)If Shift = 6 And Button = 1 Then Print "BBBB" End If End Sub程序运行后，为了在窗体上输出 “BBBB”，应执行的操作为______。A．同时按下Shift 键和鼠标左键B．同时Ctrl、Alt 键和鼠标左键C．同时按下Shift 键和

[单选题]对窗体编写如下事件过程：Private Sub Form_MouseDown（Button As Integer，Shift As Integer，X As Single Y As Single）If Button=2ThenPrint"AAAAA"EndIfEndSubPrivate Sub Form_MouseUp（Button As Integer，Shift As Integer，X As Single，Y As Single）Print"BBBBB&quo

[单选题]编写了如下事件过程： Private Sub Form_MouseDown(KeyCode As Integer,Shift As Integer) If (Button And 3)=3 Then Print"AAAA" End If End Sub 程序运行后，为了在窗体上输出“AAAA”，应按下的鼠标键是A．左B．右C．同时按下左和右D．按什么键都不显示

[单选题]对窗体编写如下事件过程： Private Sub Form_MouseDown(Button As Integer，Shift As Integer,X As Single， Y As Single) If Button=2 Then Print "AAAAA" End If End Sub Private Sub Form_MouseUp(Button As Integer，Shift As Integer，X As Single， Y As Single) Print "BBBBB"

[单选题]假定有如下事件过程： Private Sub Form_MouseDown(Button As Integer,Shift As Integer,X As Single,Y As Single) If Button=2 Then PopupMenu popForm End If End Sub 则以下描述中错误的是( )。A．该过程的功能是弹出一个菜单B．PopForm是在菜单编辑器中定义的弹出式菜单的名称C．参数X、Y指明鼠标的当前位置D．Button=2表示按下的是鼠标左键