| '''' 日期: 2003/12/19
''''
'''' 这里是没有升级时的主程序
''''
'''' ------------------------------------------
Private Sub Command1_Click()
Command1.Enabled = False
'''' 运行更新程序
Shell App.Path & "\update.exe", vbNormalFocus
End Sub
Private Sub Form_Load()
If App.PrevInstance Then End
UpdateIniPath = App.Path & "\Update.ini"
'''' 记录主程序的名字
WritePrivateProfileString "Main", "Name", App.EXEName, UpdateIniPath
'''' 记录运行状态
WritePrivateProfileString "Main", "Active", "-1", UpdateIniPath
'''' 记录更新次数
WritePrivateProfileString "Update", "Num", "0", UpdateIniPath
Me.Caption = App.EXEName
End Sub
Private Sub Form_Unload(Cancel As Integer)
'''' 记录运行状态
WritePrivateProfileString "Main", "Active", "0", UpdateIniPath
End Sub
用记事本打开modCommon.bas文件，copy以下内容到其中：
Attribute VB_Name = "modCommon"
Option Explicit
'''' ------------------------------------------
'''' 升级程序的例子
'''' 作者: 谢家峰
'''' 日期: 2003/12/19
''''
'''' 这里是通用模块，放置API函数以及公用函数
''''
'''' ------------------------------------------
Public Declare Sub Sleep Lib "kernel32" (ByVal dwMilliseconds As Long)
Public Declare Function GetPrivateProfileString Lib "kernel32" Alias "GetPrivateProfileStringA" (ByVal lpApplicationName As String, ByVal lpKeyName As Any, ByVal lpDefault As String, ByVal lpReturnedString As String, ByVal lSize As Long, ByVal lpFilename As String) As Long
Public Declare Function WritePrivateProfileString Lib "kernel32" Alias "WritePrivateProfileStringA" (ByVal lpApplicationName As Any, ByVal lpKeyName As Any, ByVal lpString As Any, ByVal lplFilename As String) As Long
Public Declare Function GetPrivateProfileSection Lib "kernel32" Alias "GetPrivateProfileSectionA" (ByVal lpAppName As String, ByVal lpReturnedString As String, ByVal nSize As Long, ByVal lpFilename As String) As Long
Public Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Public Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Const WM_Close = &H10
Private Const gintMAX_SIZE% = 255 ''''Maximum buffer size
Public UpdateIniPath As String
'''' ===============================================
'''' 从资源文件中提取文件
''''
'''' ===============================================
Public Function SaveFileFromRes(vntResourceID As Variant, sType As String, sFileName As String) As Boolean
Dim bytImage() As Byte
Dim iFileNum As Integer
On Error GoTo SaveFileFromRes_Err
SaveFileFromRes = True
bytImage = LoadResData(vntResourceID, sType)
iFileNum = FreeFile
Open sFileName For Binary As iFileNum
Put #iFileNum, , bytImage
Close iFileNum
Exit Function
SaveFileFromRes_Err:
SaveFileFromRes = False: Exit Function
End Function
'''' ===============================================
'''' 从缓冲区中读取字符串
''''
'''' ===============================================
Private Function StringFromBuffer(Buffer As String) As String
Dim nPos As Long
nPos = InStr(Buffer, vbNullChar)
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