题目内容

设工程文件中包名称分别为Form1、Form2的两个窗体,且Form1的菜单属性设置如下: 标题(p) 名称(m) 内缩符号 Index 窗体 Mnu() 无 显示窗体2 Mnu1 1 1 退出 Mnu1 1 2 窗体Form1中的程序如下: Dim Flag As Boolean Private Sub Form_Load() Flag = True End Sub Private Sub mnu1_Click(index As Integer) If Index = 1 Then If Flag = True Then Form2. show mnu1 (1). Caption = "隐藏窗体2" Flag = False Else Form2. Hide mnu1 (1). Caption = "显示窗体2" Flag = True End If End If If Index = 2 Then End End Sub 关于上述程序,以下叙述中错误的是( )。

A) Index属性的值可以用来区分控件数组元素
B) Index为1的菜单项的标题可能会改变
C) 两个名称均为Mnu1的菜单项构成一个控件数组
D) 语句Form2. Hide将Form2卸载

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