[单选]  在窗体上创建一个名称为Text1的文本框，并编写如下程序：Private Sub Form_Load()ShowText1.Text=""Text1.SetFocusEnd SubPrivate Sub Form_MouseUp(Button As Integer,Shift As Integer, X As Single, Y As Single)Print "程序设计"End SubPrivate Sub Text1_KeyDown(KeyCode As Integer,Shift As Integer)Print "Visual Basic";End Sub程序运行后，如果按A键，然后单击窗体，则在窗体上显示的内容是（ ）。