form1.frm

本文件包含200个visual baisc实例

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "判断文件是否被改动"
   ClientHeight    =   2700
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4185
   LinkTopic       =   "Form1"
   ScaleHeight     =   2700
   ScaleWidth      =   4185
   StartUpPosition =   1  '所有者中心
   Begin VB.CommandButton Command1 
      Caption         =   "退出"
      Height          =   360
      Left            =   2400
      TabIndex        =   1
      Top             =   2265
      Width           =   1665
   End
   Begin VB.TextBox Text1 
      Height          =   1830
      Left            =   180
      TabIndex        =   0
      Text            =   "Text1"
      Top             =   360
      Width           =   3885
   End
   Begin VB.Label Label1 
      BackStyle       =   0  'Transparent
      Caption         =   "请输入文本"
      Height          =   345
      Left            =   225
      TabIndex        =   2
      Top             =   105
      Width           =   3720
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim txtchange As Boolean
Dim myval As String
Private Sub Form_Load()
  Text1.Text = "vb程序员,vb程序员"
  txtchange = False
End Sub

Private Sub Text1_Change()
  Static notchange As Boolean
  txtchange = notchange
  notchange = True
End Sub

Private Sub Form_Unload(Cancel As Integer)
  Dim myval As String
  If txtchange = True Then
     myval = MsgBox("保存文件的更改吗?", vbYesNoCancel, "提示信息")
     If myval = vbYes Then
        MsgBox "保存成功"
        End
     End If
     If myval = vbNo Then End
     If myval = vbCancel Then Cancel = 1
  End If
End Sub

Private Sub Command1_Click()
  If txtchange = True Then
     myval = MsgBox("保存文件的更改吗?", vbYesNoCancel, "提示信息")
     If myval = vbYes Then
        MsgBox "保存成功"
        End
     End If
     If myval = vbNo Then End
     If myval = vbcanle Then
     End If
    Else
     End
  End If
End Sub