用VB6.0编写自我升级的程序(二)
二、 projNewMain.vbp工程:
说明:这个是新的主程序,即升级后的主程序,由于我目前没有服务器,故将该程序放在projUpdate.vbp工程的资源文件中。在projUpdate.vbp中模拟网络升级。
用记事本打开frmNewMain.frm文件,copy以下内容到其中:
VERSION 5.00
Begin VB.Form frmNewMain
Appearance = 0 'Flat
BackColor = &H80000005&
Caption = "Form1"
ClientHeight = 1365
ClientLeft = 60
ClientTop = 345
ClientWidth = 4680
LinkTopic = "Form1"
ScaleHeight = 1365
ScaleWidth = 4680
StartUpPosition = 3 '窗口缺省
Begin VB.CommandButton Command1
Caption = "升级"
Height = 525
Left = 1410
TabIndex = 0
Top = 660
Width = 1245
End
Begin VB.Label lblCap
Caption = "告诉你,我已经升级了,没看出和以前不一样了吗?"
Height = 255
Left = 120
TabIndex = 1
Top = 60
Width = 4275
End
End
Attribute VB_Name = "frmNewMain"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
' ------------------------------------------
' 升级程序的例子
' 作者: 谢家峰
' 日期: 2003/12/19
' 这里是升级后的主程序
' ------------------------------------------
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()
Dim i As Integer
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
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
三、 projUpdate.vbp工程:
说明:这是升级程序,含有一个资源文件。
用记事本打开frmUpdate.frm文件,copy以下内容到其中:
VERSION 5.00
Begin VB.Form frmUpdate
BackColor = &H80000007&
BorderStyle = 0 'None
Caption = "Form1"
ClientHeight = 1185
ClientLeft = 0
ClientTop = 0
ClientWidth = 5400
LinkTopic = "Form1"
MaxButton = 0 'False
MinButton = 0 'False
ScaleHeight = 1185
ScaleWidth = 5400
ShowInTaskbar = 0 'False
StartUpPosition = 2 '屏幕中心
Begin VB.CommandButton Command1
Appearance = 0 'Flat
Caption = "关闭"
Height = 435
Left = 2130
TabIndex = 0
Top = 630
Visible = 0 'False
Width = 1245
End
Begin VB.Label lblCap
AutoSize = -1 'True
BackStyle = 0 'Transparent
BeginProperty Font
Name = "宋体"
Size = 12
Charset = 134
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
ForeColor = &H000000FF&
Height = 240
Left = 330
TabIndex = 1
Top = 150
Width = 120
End
Begin VB.Shape Shape1
BackColor = &H00C0FFFF&
BackStyle = 1 'Opaque
BorderColor = &H0000FF00&
Height = 1065
Left = 60
Top = 60
Width = 5265
End
End
Attribute VB_Name = "frmUpdate"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
' ------------------------------------------
' 升级程序的例子
' 作者: 谢家峰
' 日期: 2003/12/19
' 这里是升级程序
' ------------------------------------------
Dim State As Boolean
Private Sub Command1_Click()
Unload Me
End Sub
Private Sub Form_Activate()
Dim i As Integer
Dim j As String
Dim OldExeFile As String
Dim NewExeFile As String
Dim tmpFile As String
Dim MainState As Boolean
DoEvents
If State Then
' 获取旧主程序名称
OldExeFile = CStr(ReadIniFile(UpdateIniPath, "Main", "Name", "主程序"))
NewExeFile = OldExeFile
OldExeFile = App.Path & "\" & OldExeFile & ".exe"
tmpFile = App.Path & "\tmp.tmp"
' 改写升级次数
i = CInt(ReadIniFile(UpdateIniPath, "Update", "Num", "0"))
i = i + 1
ChangeLabelPos Me, lblCap, "这是您第" & i & "次升级!"
Sleep 1500
' 摸拟从网站下载新的更新程序。
ChangeLabelPos Me, lblCap, "正在 摸拟从网站下载新的升级程序 ..."
Sleep 1000
On Error Resume Next
Kill tmpFile
' 此处可以修改为将临时文件放在临时文件夹内
SaveFileFromRes 101, "CUSTOM", tmpFile
Sleep 1000
On Error GoTo 0
' 检查主程序是否开启,若开启则关闭旧程序
MainState = CBool(CInt(ReadIniFile(UpdateIniPath, "Main", "Active",
"0")))
If MainState Then
' 关闭旧程序
ChangeLabelPos Me, lblCap, "正在关闭旧程序 ... "
Sleep 300
' 这里强行关闭旧程序
' 你也可以发送消息,让旧程序自己关闭
Do While -1
DoEvents
If CloseValidForm(NewExeFile) Then
Exit Do
End If
Loop
Sleep 200
End If
' 删除旧程序
On Error Resume Next
ChangeLabelPos Me, lblCap, "正在删除旧程序 ... "
Sleep 1000
Kill OldExeFile
Sleep 1000
' 生成新主程序名称
'NewExeFile = CStr(ReadIniFile(UpdateIniPath, "Main", "Name",
"主程序"))
j = Right(NewExeFile, 1)
If IsNumeric(j) Then
j = i
NewExeFile = Left(NewExeFile, Len(NewExeFile) - 1)
Else
j = 1
End If
' 记录主程序的名字
NewExeFile = NewExeFile & j
WritePrivateProfileString "Main", "Name", NewExeFile, UpdateIniPath
NewExeFile = App.Path & "\" & NewExeFile & ".exe"
' 拷贝新程序
ChangeLabelPos Me, lblCap, "正在更新程序 ... "
Sleep 1000
FileCopy tmpFile, NewExeFile
Sleep 1000
' 删除临时程序
Kill tmpFile
' 记录更新次数
WritePrivateProfileString "Update", "Num", CStr(i), UpdateIniPath
' 检查旧程序的状态
If MainState Then
ChangeLabelPos Me, lblCap, "正在启动更新后的主程序 ... "
Sleep 1000
Shell NewExeFile, vbNormalNoFocus
End If
' 关闭更新程序
Command1.Visible = True
ChangeLabelPos Me, lblCap, "更新完成,请等待 3 秒后将自动关闭更新程序 ..."
Sleep 3000
lblCap.Refresh
Unload Me
End If
End Sub
Private Sub Form_Load()
If App.PrevInstance Then End
UpdateIniPath = App.Path & "\Update.ini"
State = True
End Sub
完成了三个工程的代码拷贝,在代码的必要之处我都进行了详细注释,这里我就不再介绍代码了,现在进行最后一步,模拟从网站下载升级后的程序。
a. 打开projMain.vbp,编译该工程,并且命名为“主程序.exe”;
b. 打开projNewMain.vbp,编译该工程,并且命名为“projNewMain.exe”;
c.
打开projUpdate.vbp,打开工具栏上的“vb资源编辑器”(若没找到,读者需要点击菜单“外接程序|外接程序管理器”,在打开的对话框中选择“vb6资源编辑器”,在加载行为中选择“加载/卸载”复选框),在资源编辑器中选择“添加自定义资源
…”,在打开的对话框中定位到Update文件夹,选择projNewMain.exe文件,保存该资源文件,最后编译该工程并且命名为“Update.exe”。
d. 将可执行文件“主程序.exe”、“Update.exe”拷贝到同一个文件夹中,运行任一个程序,相信读者会看到效果。
以上代码比较简单,仅供读者分析思路用。在实际工程中的代码编写时也根本没必要把projNewMain.exe放在资源文件中,读者只需将它放在服务器的某个位置,然后在projUpdate.vbp中的相应处写下载代码即可。
Ok,文章至此编写完成,希望对各位读者能有所帮助。
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