一个操作注册表的类

Question

因发现询问注册表操作的网友比较多，特整理了一套注册表操作的函数，以下代码直接Copy即可运行。

Option Explicit

'注册表主键
Public Enum enumRegMainKey
   iHKEY_CURRENT_USER = &H80000001
   iHKEY_LOCAL_MACHINE = &H80000002
   iHKEY_CLASSES_ROOT = &H80000000
   iHKEY_CURRENT_CONFIG = &H80000005
   iHKEY_USERS = &H80000003
End Enum

'注册表数据类型
Public Enum enumRegSzType
   iREG_SZ = &H1
   iREG_EXPAND_SZ = &H2
   iREG_BINARY = &H3
   iREG_DWORD = &H4
   iREG_NONE = 0&
   iREG_DWORD_LITTLE_ENDIAN = 4&
   iREG_DWORD_BIG_ENDIAN = 5&
   iREG_LINK = 6&
   iREG_MULTI_SZ = 7&
   iREG_RESOURCE_LIST = 8&
   iREG_FULL_RESOURCE_DESCRIPTOR = 9&
   iREG_RESOURCE_REQUIREMENTS_LIST = 10&
End Enum
'注册表
Private Const ERROR_SUCCESS = 0&
Private Const ERROR_BADDB = 1009&
Private Const ERROR_BADKEY = 1010&
Private Const ERROR_CANTOPEN = 1011&
Private Const ERROR_CANTREAD = 1012&
Private Const ERROR_CANTWRITE = 1013&
Private Const ERROR_OUTOFMEMORY = 14&
Private Const ERROR_INVALID_PARAMETER = 87&
Private Const ERROR_ACCESS_DENIED = 5&
Private Const ERROR_NO_MORE_ITEMS = 259&
Private Const ERROR_MORE_DATA = 234&

Private Const KEY_QUERY_VALUE = &H1&
Private Const KEY_SET_VALUE = &H2&
Private Const KEY_CREATE_SUB_KEY = &H4&
Private Const KEY_ENUMERATE_SUB_KEYS = &H8&
Private Const KEY_NOTIFY = &H10&
Private Const KEY_CREATE_LINK = &H20&

Private Const SYNCHRONIZE = &H100000

Private Const READ_CONTROL = &H20000

Private Const WRITE_DAC = &H40000
Private Const WRITE_OWNER = &H80000

Private Const STANDARD_RIGHTS_REQUIRED = &HF0000
Private Const STANDARD_RIGHTS_READ = READ_CONTROL
Private Const STANDARD_RIGHTS_WRITE = READ_CONTROL
Private Const STANDARD_RIGHTS_EXECUTE = READ_CONTROL

Private Const KEY_READ = STANDARD_RIGHTS_READ Or KEY_QUERY_VALUE Or KEY_ENUMERATE_SUB_KEYS Or KEY_NOTIFY
Private Const KEY_WRITE = STANDARD_RIGHTS_WRITE Or KEY_SET_VALUE Or KEY_CREATE_SUB_KEY
Private Const KEY_EXECUTE = KEY_READ

Private Declare Function RegCreateKey Lib "advapi32.dll" Alias "RegCreateKeyA" (ByVal hKey As Long, ByVal lpSubKey As String, phkResult As Long) As Long
Private Declare Function RegCreateKeyEx Lib "advapi32.dll" Alias "RegCreateKeyExA" (ByVal hKey As Long, ByVal lpSubKey As String, ByVal Reserved As Long, ByVal lpClass As String, ByVal dwOptions As Long, ByVal samDesired As Long, lpSecurityAttributes As SECURITY_ATTRIBUTES, phkResult As Long, lpdwDisposition As Long) As Long
Private Declare Function RegEnumValue Lib "advapi32.dll" Alias "RegEnumValueA" (ByVal hKey As Long, ByVal dwIndex As Long, ByVal lpValueName As String, lpcbValueName As Long, ByVal lpReserved As Long, lpType As Long, lpData As Byte, lpcbData As Long) As Long
Private Declare Function RegEnumKeyEx Lib "advapi32.dll" Alias "RegEnumKeyExA" (ByVal hKey As Long, ByVal dwIndex As Long, ByVal lpName As String, lpcbName As Long, ByVal lpReserved As Long, ByVal lpClass As String, lpcbClass As Long, lpftLastWriteTime As FILETIME) As Long
Private Declare Function RegOpenKeyEx Lib "advapi32.dll" Alias "RegOpenKeyExA" (ByVal hKey As Long, ByVal lpSubKey As String, ByVal ulOptions As Long, ByVal samDesired As Long, phkResult As Long) As Long
Private Declare Function RegCloseKey Lib "advapi32.dll" (ByVal hKey As Long) As Long
Private Declare Function RegDeleteValue Lib "advapi32.dll" Alias "RegDeleteValueA" (ByVal hKey As Long, ByVal lpValueName As String) As Long
Private Declare Function RegSetValueEx Lib "advapi32.dll" Alias "RegSetValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal Reserved As Long, ByVal dwType As Long, ByVal lpData As String, ByVal cbData As Long) As Long
Private Declare Function RegSetValueExLong Lib "advapi32.dll" Alias "RegSetValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal Reserved As Long, ByVal dwType As Long, lpData As Long, ByVal cbData As Long) As Long
Private Declare Function RegSetValueExA Lib "advapi32.dll" (ByVal hKey As Long, ByVal lpValueName As String, ByVal Reserved As Long, ByVal dwType As Long, ByRef lpData As Long, ByVal cbData As Long) As Long
Private Declare Function RegQueryValueEx Lib "advapi32.dll" Alias "RegQueryValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal lpReserved As Long, lpType As Long, lpData As Any, lpcbData As Long) As Long         ' Note that if you declare the lpData parameter as String, you must pass it By Value.
Private Declare Function RegDeleteKey Lib "advapi32.dll" Alias "RegDeleteKeyA" (ByVal hKey As Long, ByVal lpSubKey As String) As Long
Private Declare Function RegSaveKey Lib "advapi32.dll" Alias "RegSaveKeyA" (ByVal hKey As Long, ByVal lpFile As String, ByVal lpSecurityAttributes As Long) As Long
Private Declare Function RegRestoreKey Lib "advapi32.dll" Alias "RegRestoreKeyA" (ByVal hKey As Long, ByVal lpFile As String, ByVal dwflags As Long) As Long

Private Type FILETIME
   dwLowDateTime As Long
   dwHighDateTime As Long
End Type

Private Type SECURITY_ATTRIBUTES
   nLength As Long
   lpSecurityDescriptor As Long
   bInheritHandle As Boolean
End Type

Public Function GetValue(ByVal mainKey As enumRegMainKey, _
                        ByVal subKey As String, _
                        ByVal keyV As String, _
                        ByRef sValue As Variant, _
                        Optional ByRef rlngErrNum As Long, _
                        Optional ByRef rstrErrDescr As String) As Boolean
   
   Dim hKey As Long, lType As Long, lBuffer As Long, sBuffer As String, lData As Long
   On Error GoTo GetValueErr
   GetValue = False
   
   If RegOpenKeyEx(mainKey, subKey, 0, KEY_READ, hKey) <> ERROR_SUCCESS Then
      Err.Raise vbObjectError + 1, , "获取注册表值时出错"
   End If
   
   If RegQueryValueEx(hKey, keyV, 0, lType, ByVal 0, lBuffer) <> ERROR_SUCCESS Then
      Err.Raise vbObjectError + 1, , "获取注册表值时出错"
   End If
   
   Select Case lType
      Case iREG_SZ
         lBuffer = 255
         sBuffer = Space(lBuffer)
         If RegQueryValueEx(hKey, keyV, 0, lType, ByVal sBuffer, lBuffer) <> ERROR_SUCCESS Then
            Err.Raise vbObjectError + 1, , "获取注册表值时出错"
         End If
         sValue = Left(sBuffer, InStr(sBuffer, Chr(0)) - 1)
         
      Case iREG_EXPAND_SZ
         sBuffer = Space(lBuffer)
         If RegQueryValueEx(hKey, keyV, 0, lType, ByVal sBuffer, lBuffer) <> ERROR_SUCCESS Then
            Err.Raise vbObjectError + 1, , "获取注册表值时出错"
         End If
         sValue = Left(sBuffer, InStr(sBuffer, Chr(0)) - 1)
         
      Case iREG_DWORD
         If RegQueryValueEx(hKey, keyV, 0, lType, lData, lBuffer) <> ERROR_SUCCESS Then
            Err.Raise vbObjectError + 1, , "获取注册表值时出错"
         End If
         sValue = lData
         
      Case iREG_BINARY
         If RegQueryValueEx(hKey, keyV, 0, lType, lData, lBuffer) <> ERROR_SUCCESS Then
            Err.Raise vbObjectError + 1, , "获取注册表值时出错"
         End If
         sValue = lData
         
   End Select
   
   If RegCloseKey(hKey) <> ERROR_SUCCESS Then
      Err.Raise vbObjectError + 1, , "获取注册表值时出错"
   End If
   
   GetValue = True
   
   Err.Clear
GetValueErr:
   rlngErrNum = Err.Number
   rstrErrDescr = Err.Description
   
End Function

Public Function SetValue(ByVal mainKey As enumRegMainKey, _
                        ByVal subKey As String, _
                        ByVal keyV As String, _
                        ByVal lType As enumRegSzType, _
                        ByVal sValue As Variant, _
                        Optional ByRef rlngErrNum As Long, _
                        Optional ByRef rstrErrDescr As String) As Boolean
                        
   Dim S As Long, lBuffer As Long, hKey As Long
   Dim ss As SECURITY_ATTRIBUTES
   On Error GoTo SetValueErr
   SetValue = False
   
   ss.nLength = Len(ss)
   ss.lpSecurityDescriptor = 0
   ss.bInheritHandle = True
   If RegCreateKeyEx(mainKey, subKey, 0, "", 0, KEY_WRITE, ss, hKey, S) <> ERROR_SUCCESS Then
      Err.Raise vbObjectError + 1, , "设置注册表时出错"
   End If
   
   Select Case lType
      Case iREG_SZ
         lBuffer = LenB(sValue)
         If RegSetValueEx(hKey, keyV, 0, lType, ByVal sValue, lBuffer) <> ERROR_SUCCESS Then
            Err.Raise vbObjectError + 1, , "设置注册表时出错"
         End If
         
      Case iREG_EXPAND_SZ
         lBuffer = LenB(sValue)
         If RegSetValueEx(hKey, keyV, 0, lType, ByVal sValue, lBuffer) <> ERROR_SUCCESS Then
            Err.Raise vbObjectError + 1, , "设置注册表时出错"
         End If
         
      Case iREG_DWORD
         lBuffer = 4
         If RegSetValueExA(hKey, keyV, 0, lType, sValue, lBuffer) <> ERROR_SUCCESS Then
            Err.Raise vbObjectError + 1, , "设置注册表时出错"
         End If
         
      Case iREG_BINARY
         lBuffer = 4
         If RegSetValueExA(hKey, keyV, 0, lType, sValue, lBuffer) <> ERROR_SUCCESS Then
            Err.Raise vbObjectError + 1, , "设置注册表时出错"
         End If
      
      Case Else
         Err.Raise vbObjectError + 1, , "不支持该参数类型"
         
   End Select
   
   If RegCloseKey(hKey) <> ERROR_SUCCESS Then
      Err.Raise vbObjectError + 1, , "设置注册表时出错"
   End If
   
   SetValue = True
   
   Err.Clear
SetValueErr:
   rlngErrNum = Err.Number
   rstrErrDescr = Err.Description
   
End Function

Public Function DeleteValue(ByVal mainKey As enumRegMainKey, _
                           ByVal subKey As String, _
                           ByVal keyV As String, _
                           Optional ByRef rlngErrNum As Long, _
                           Optional ByRef rstrErrDescr As String) As Boolean
   Dim hKey As Long
   
   On Error GoTo DeleteValueErr
   DeleteValue = False
   
   If RegOpenKeyEx(mainKey, subKey, 0, KEY_WRITE, hKey) <> ERROR_SUCCESS Then
      Err.Raise vbObjectError + 1, , "删除注册表值时出错"
   End If
   
   If RegDeleteValue(hKey, keyV) <> ERROR_SUCCESS Then
      Err.Raise vbObjectError + 1, , "删除注册表值时出错"
   End If
   
   If RegCloseKey(hKey) <> ERROR_SUCCESS Then
      Err.Raise vbObjectError + 1, , "删除注册表值时出错"
   End If
   
   DeleteValue = True
   
   Err.Clear
DeleteValueErr:
   rlngErrNum = Err.Number
   rstrErrDescr = Err.Description
   
End Function

Public Function DeleteKey(ByVal mainKey As enumRegMainKey, _
                           ByVal subKey As String, _
                           ByVal keyV As String, _
                           Optional ByRef rlngErrNum As Long, _
                           Optional ByRef rstrErrDescr As String) As Boolean
   
   Dim hKey As Long
   
   On Error GoTo DeleteKeyErr
   DeleteKey = False
   
   If RegOpenKeyEx(mainKey, subKey, 0, KEY_WRITE, hKey) <> ERROR_SUCCESS Then
      Err.Raise vbObjectError + 1, , "删除注册表值时出错"
   End If
   
   If RegDeleteKey(hKey, keyV) <> ERROR_SUCCESS Then
      Err.Raise vbObjectError + 1, , "删除注册表值时出错"
   End If
   
   If RegCloseKey(hKey) <> ERROR_SUCCESS Then
      Err.Raise vbObjectError + 1, , "删除注册表值时出错"
   End If
   
   DeleteKey = True
   
   Err.Clear
DeleteKeyErr:
   rlngErrNum = Err.Number
   rstrErrDescr = Err.Description
   
End Function