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源程序：
classIniFile.cls的内容：
Option Explicit
'--------classIniFile.cls 代码----------------
'这里定义了一个classIniFile类
'一个绝对经典的在VB中操作.ini文件的通用类源代码
'程序编写：中国青岛·许家国
' 2002.6.16
'E－Mail: goj2000@163.com
'HomePage: http://www.gojclub.com
'
'Private member that holds a reference to
'the path of our ini file
Private strINI As String
'Windows API Declares
Private Declare Function WritePrivateProfileString Lib "kernel32" Alias "WritePrivateProfileStringA" _
(ByVal lpApplicationName As String, _
ByVal lpKeyName As Any, _
ByVal lpString As Any, _
ByVal lpFileName As String) As Long
Private Declare Function GetPrivateProfileString _
Lib "kernel32" Alias "GetPrivateProfileStringA" _
(ByVal lpApplicationName As String, _
ByVal lpKeyName As Any, _
ByVal lpDefault As String, _
ByVal lpReturnedString As String, _
ByVal nSize As Long, _
ByVal lpFileName As String) As Long
Private Function MakePath(ByVal strDrv As String, ByVal strDir As String) As String
' Makes an INI file: Guarantees a sub dir
Do While Right$(strDrv, 1) = "\"
strDrv = Left$(strDrv, Len(strDrv) - 1)
Loop
Do While Left$(strDir, 1) = "\"
strDir = Mid$(strDir, 2)
Loop
' Return the path
MakePath = strDrv & "\" & strDir
End Function
Private Sub CreateIni(strDrv As String, strDir As String)
' Make a new ini file
strINI = MakePath(strDrv, strDir)
End Sub
Public Sub WriteIniKey(strSection As String, strKey As String, strValue As String)
' Write to strINI
WritePrivateProfileString strSection, strKey, strValue, strINI
End Sub
Public Function GetIniKey(strSection As String, strKey As String) As String
Dim strTmp As String
Dim lngRet As String
Dim I As Integer
Dim strTmp2 As String
strTmp = String$(1024, Chr(32))
lngRet = GetPrivateProfileString(strSection, strKey, "", strTmp, Len(strTmp), strINI)
strTmp = Trim(strTmp)
strTmp2 = ""
For I = 1 To Len(strTmp)
If Asc(Mid(strTmp, I, 1)) <> 0 Then
strTmp2 = strTmp2 + Mid(strTmp, I, 1)
End If
Next I
strTmp = strTmp2
GetIniKey = strTmp
End Function
Public Property Let INIFileName(ByVal New_IniPath As String)
' Sets the new ini path
strINI = New_IniPath
End Property
Public Property Get INIFileName() As String
' Returns the current ini path
INIFileName = strINI
End Property
'***************************************清除KeyWord"键"(Sub)***********************************************
Public Function DelIniKey(ByVal SectionName As String, ByVal KeyWord As String)
Dim RetVal As Integer
RetVal = WritePrivateProfileString(SectionName, KeyWord, 0&, strINI)
End Function
'如果是清除section就少写一个Key多一个""。
'**************************************清除 Section"段"(Sub)***********************************************
Public Function DelIniSec(ByVal SectionName As String) '清除section
Dim RetVal As Integer
RetVal = WritePrivateProfileString(SectionName, 0&, "", strINI)
End Function
Form1中的内容：
Option Explicit
'一个绝对经典的在VB中操作.ini文件的通用类源代码示例程序
'程序编写：中国青岛·许家国
' 2002.6.16
'E－Mail: goj2000@163.com
'HomePage: http://www.gojclub.com
'定义一个.ini类型的变量
Dim DemoIni As New classIniFile
Private Sub Form_Load()
'对控件进行初始化
Text1.Text = "测试一下"
List1.Clear
'定义.ini文件名,并写入一些初始数据
DemoIni.INIFileName = App.Path & "\demoini.ini"
DemoIni.WriteIniKey "系统", "启动路径", App.Path
DemoIni.WriteIniKey "系统", "可执行程序文件名", App.EXEName
'显示保存到.ini文件中的数据
Call CmdRead_Click
End Sub
'退出程序
Private Sub CmdExit_Click()
Unload Me
End Sub
'读取.ini文件中已经存在的数据并显示出来
Private Sub CmdRead_Click()
Dim TestStr As String
List1.Clear
TestStr = DemoIni.GetIniKey("系统", "启动路径")
List1.AddItem "系统 - 启动路径: " & TestStr
TestStr = DemoIni.GetIniKey("系统", "可执行程序文件名")
List1.AddItem "系统 - 可执行程序文件名: " & TestStr
TestStr = DemoIni.GetIniKey("用户自定义", "用户数据")
List1.AddItem "用户自定义 - 用户数据: " & TestStr
End Sub
'保存用户自定义数据到.ini文件中
Private Sub CmdSave_Click()
DemoIni.WriteIniKey "用户自定义", "用户数据", Text1.Text
'显示保存到.ini文件中的数据
Call CmdRead_Click
End Sub
'清除用户自定义段和段中数据
Private Sub CmdDelete_Click()
DemoIni.DelIniKey "用户自定义", "用户数据"
DemoIni.DelIniSec "用户自定义"
'显示保存到.ini文件中的数据
Call CmdRead_Click
End Sub
