form1.frm

vb编程+从基础到实践光盘代码

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   3195
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   ScaleHeight     =   3195
   ScaleWidth      =   4680
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command2 
      Caption         =   "Command2"
      Height          =   495
      Left            =   2880
      TabIndex        =   1
      Top             =   2520
      Width           =   1215
   End
   Begin VB.CommandButton Command1 
      Caption         =   "Command1"
      Height          =   495
      Left            =   480
      TabIndex        =   0
      Top             =   2400
      Width           =   1215
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Const pi = 3.14159

    Private Sub Command1_Click()
        Const pi = 3.14
        '事件过程与通用对象声明部分声明的符号常量同名，则事件过程内部引用的是内部声明的值，
        '句Print语句的输出结果是3.14而不是3.14159
        Print pi
End Sub

Private Sub Command2_Click()
        '事件过程中未声明pi，此处pi是通用对象声明部分所声明的pi，输出3.14159
        Print pi
End Sub