VB API 操作注册表实例(添加、修改、删除键值)

vb6 · 发表于 2020-2-26 14:59:50

因为VB6生成的程序为32位，此代码在64位系统中，
操作HKEY_LOCAL_MACHINE\SOFTWARE下的注册表将自动定位到HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node下。
如需操作HKEY_LOCAL_MACHINE\SOFTWARE下的注册表，则需要添加KEY_WOW64_64KEY参数。
操作例：RegOpenKeyEx(lKey, sKeyName, 0, KEY_ALL_ACCESS Or KEY_WOW64_64KEY, hKey)

'Module
Option Explicit
Global Const REG_SZ As Long = 1
Global Const REG_DWORD As Long = 4
Global Const HKEY_CLASSES_ROOT = &H80000000
Global Const HKEY_CURRENT_USER = &H80000001
Global Const HKEY_LOCAL_MACHINE = &H80000002
Global Const HKEY_USERS = &H80000003
Global Const ERROR_NONE = 0
Global Const ERROR_BADDB = 1
Global Const ERROR_BADKEY = 2
Global Const ERROR_CANTOPEN = 3
Global Const ERROR_CANTREAD = 4
Global Const ERROR_CANTWRITE = 5
Global Const ERROR_OUTOFMEMORY = 6
Global Const ERROR_INVALID_PARAMETER = 7
Global Const ERROR_ACCESS_DENIED = 8
Global Const ERROR_INVALID_PARAMETERS = 87
Global Const ERROR_NO_MORE_ITEMS = 259
Global Const KEY_ALL_ACCESS = &H3F
Global Const REG_OPTION_NON_VOLATILE = 0
Global Const KEY_WOW64_64KEY = &H100&
Global Const KEY_WOW64_32KEY = &H200&
Declare Function RegCloseKey Lib "advapi32.dll" (ByVal hKey As Long) As Long
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, ByVal lpSecurityAttributes As Long, phkResult As Long, lpdwDisposition As Long) As Long
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
Declare Function RegQueryValueExString Lib "advapi32.dll" Alias "RegQueryValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal lpReserved As Long, lpType As Long, ByVal lpData As String, lpcbData As Long) As Long
Declare Function RegQueryValueExLong Lib "advapi32.dll" Alias "RegQueryValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal lpReserved As Long, lpType As Long, lpData As Long, lpcbData As Long) As Long
Declare Function RegQueryValueExNULL Lib "advapi32.dll" Alias "RegQueryValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal lpReserved As Long, lpType As Long, ByVal lpData As Long, lpcbData As Long) As Long
Declare Function RegSetValueExString Lib "advapi32.dll" Alias "RegSetValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal Reserved As Long, ByVal dwType As Long, ByVal lpValue As String, ByVal cbData As Long) As Long
Declare Function RegSetValueExLong Lib "advapi32.dll" Alias "RegSetValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal Reserved As Long, ByVal dwType As Long, lpValue As Long, ByVal cbData As Long) As Long
Private Declare Function RegDeleteKey& Lib "advapi32.dll" Alias "RegDeleteKeyA" (ByVal hKey As Long, ByVal lpSubKey As String)
Private Declare Function RegDeleteValue& Lib "advapi32.dll" Alias "RegDeleteValueA" (ByVal hKey As Long, ByVal lpValueName As String)
Public Function DelKey(lKey As Long, sKeyName As String)
Dim lVal As Long
Dim hKey As Long
lVal = RegOpenKeyEx(lKey, sKeyName, 0, KEY_ALL_ACCESS, hKey)
lVal = RegDeleteKey(lKey, sKeyName)
RegCloseKey (hKey)
End Function
Public Function DelVal(lKey As Long, sKeyName As String, sValueName As String)
Dim lVal As Long
Dim hKey As Long
lVal = RegOpenKeyEx(lKey, sKeyName, 0, KEY_ALL_ACCESS, hKey)
lVal = RegDeleteValue(hKey, sValueName)
RegCloseKey (hKey)
End Function
Public Function SetVal(ByVal hKey As Long, sValueName As String, lType As Long, vValue As Variant) As Long
Dim lValue As Long
Dim sValue As String
Select Case lType
Case REG_SZ
sValue = vValue
SetVal = RegSetValueExString(hKey, sValueName, 0&, lType, sValue, LenB(StrConv(sValue, vbFromUnicode)))
Case REG_DWORD
lValue = vValue
SetVal = RegSetValueExLong(hKey, sValueName, 0&, lType, lValue, 4)
End Select
End Function
Function QueryValueEx(ByVal lhKey As Long, ByVal szValueName As String, vValue As Variant) As Long
Dim cch As Long
Dim lrc As Long
Dim lType As Long
Dim lValue As Long
Dim sValue As String
On Error Resume Next
lrc = RegQueryValueExNULL(lhKey, szValueName, 0&, lType, 0&, cch)
If lrc <> ERROR_NONE Then Error 5
Select Case lType
Case REG_SZ
sValue = String(cch, 0)
lrc = RegQueryValueExString(lhKey, szValueName, 0&, lType, sValue, cch)
If lrc = ERROR_NONE Then
vValue = Left$(sValue, cch)
Else
vValue = Empty
End If
Case REG_DWORD
lrc = RegQueryValueExLong(lhKey, szValueName, 0&, lType, lValue, cch)
If lrc = ERROR_NONE Then vValue = lValue
Case Else
lrc = -1
End Select
QueryValueEx = lrc
End Function
Public Function CreateNewKey(lKey As Long, sNewKeyName As String)
Dim hNewKey As Long
Dim lVal As Long
lVal = RegCreateKeyEx(lKey, sNewKeyName, 0&, vbNullString, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, 0&, hNewKey, lVal)
RegCloseKey (hNewKey)
End Function
Public Function SetKeyValue(lKey As Long, sKeyName As String, sValueName As String, vValueSetting As Variant, lValueType As Long)
Dim lVal As Long
Dim hKey As Long
lVal = RegOpenKeyEx(lKey, sKeyName, 0, KEY_ALL_ACCESS, hKey)
lVal = SetVal(hKey, sValueName, lValueType, vValueSetting)
RegCloseKey (hKey)
End Function
Public Function QueryValue(lKey As Long, sKeyName As String, sValueName As String)
Dim lVal As Long
Dim hKey As Long
Dim vValue As Variant
lVal = RegOpenKeyEx(lKey, sKeyName, 0, KEY_ALL_ACCESS, hKey)
lVal = QueryValueEx(hKey, sValueName, vValue)
QueryValue = vValue
RegCloseKey (hKey)
End Function

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使用方法：

'新建项
CreateNewKey HKEY_CURRENT_USER, "Software\SubKey1\SubKey2"
'新建、修改键值
SetKeyValue HKEY_CURRENT_USER, "Software\SubKey1\SubKey2", "Test", "这是测试注册表的程序", REG_SZ
'查询键值。
MsgBox QueryValue(HKEY_CURRENT_USER, "Software\SubKey1\SubKey2", "Test")
'删除键值
DelVal HKEY_CURRENT_USER, "Software\SubKey1\SubKey2", "Test"
'删除项
DelKey HKEY_CURRENT_USER, "Software\SubKey1\SubKey2"

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