RegDeleteKey和RegDeleteValue有什么区别啊?
打开注册表编辑器(regedit)，左边树形结构是key，右边list结构是value
Option Explicit
Private Declare Function RegCloseKey Lib "advapi32" (ByVal hKey As Long) As Long
Private Declare Function RegCreateKeyEx Lib "advapi32" 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, ByRef lpSecurityAttributes As SECURITY_ATTRIBUTES, ByRef phkResult As
Long, ByRef lpdwDisposition As Long) As Long
Private Declare Function
RegOpenKeyEx Lib "advapi32" Alias "RegOpenKeyExA" (ByVal hKey As Long, ByVal
lpSubKey As String, ByVal ulOptions As Long, ByVal samDesired As Long, ByRef
phkResult As Long) As Long
Private Declare Function RegQueryValueEx Lib
"advapi32" Alias "RegQueryValueExA" (ByVal hKey As Long, ByVal lpValueName As
String, ByVal lpReserved As Long, ByRef lpType As Long, ByVal lpData As String,
ByRef lpcbData As Long) As Long
Private Declare Function RegSetValueEx Lib
"advapi32" 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 RegDeleteKey Lib
"advapi32.dll" Alias "RegDeleteKeyA" (ByVal hKey As Long, ByVal lpSubKey As
String) As Long
Private Declare Function RegDeleteValue Lib "advapi32.dll"
Alias "RegDeleteValueA" (ByVal hKey As Long, ByVal lpValueName As String) As
Long
Private Declare Function SHDeleteKey Lib "shlwapi.dll" Alias "SHDeleteKeyA" (ByVal hKey As Long, ByVal pszSubKey As String) As Long
'---------------------------------------------------------------
'- 注册表
Api
常数...
'---------------------------------------------------------------
'
Reg Data Types...
Const REG_SZ = 1 '
Unicode空终结字符串
Const REG_EXPAND_SZ = 2 '
Unicode空终结字符串
Const REG_DWORD = 4 ' 32-bit 数字
' 注册表创建类型值...
Const REG_OPTION_NON_VOLATILE = 0 '
当系统重新启动时，关键字被保留
' 注册表关键字安全选项...
Const READ_CONTROL = &H20000
Const KEY_QUERY_VALUE
= &H1
Const KEY_SET_VALUE = &H2
Const KEY_CREATE_SUB_KEY =
&H4
Const KEY_ENUMERATE_SUB_KEYS = &H8
Const KEY_NOTIFY =
&H10
Const KEY_CREATE_LINK = &H20
Const KEY_READ = KEY_QUERY_VALUE
+ KEY_ENUMERATE_SUB_KEYS + KEY_NOTIFY + READ_CONTROL
Const KEY_WRITE =
KEY_SET_VALUE + KEY_CREATE_SUB_KEY + READ_CONTROL
Const KEY_EXECUTE =
KEY_READ
Const KEY_ALL_ACCESS = KEY_QUERY_VALUE + KEY_SET_VALUE +
_
KEY_CREATE_SUB_KEY + KEY_ENUMERATE_SUB_KEYS +
_
KEY_NOTIFY + KEY_CREATE_LINK +
READ_CONTROL
' 注册表关键字根类型...
Public Const
HKEY_CLASSES_ROOT = &H80000000
Public Const HKEY_CURRENT_USER =
&H80000001
Public Const HKEY_LOCAL_MACHINE = &H80000002
Public
Const HKEY_USERS = &H80000003
Public Const HKEY_PERFORMANCE_DATA =
&H80000004
' 返回值...
Public Const ERROR_NONE = 0
Public Const ERROR_BADKEY =
2
Public Const ERROR_ACCESS_DENIED = 8
Public Const ERROR_SUCCESS = 0
'---------------------------------------------------------------
'-
注册表安全属性类型...
'---------------------------------------------------------------
Private
Type SECURITY_ATTRIBUTES
nLength As Long
lpSecurityDescriptor As
Long
bInheritHandle As Boolean
End Type
'-------------------------------------------------------------------------------------------------
'sample
usage - Debug.Print UpodateKey(HKEY_CLASSES_ROOT, "keyname",
"newvalue")
'-------------------------------------------------------------------------------------------------
Public
Function UpdateKey(KeyRoot As Long, KeyName As String, SubKeyName As String,
SubKeyValue As String) As Boolean
Dim rc As
Long ' 返回代码
Dim hKey As
Long ' 处理一个注册表关键字
Dim hDepth As
Long '
Dim lpAttr As
SECURITY_ATTRIBUTES ' 注册表安全类型
lpAttr.nLength =
50 ' 设置安全属性为缺省值...
lpAttr.lpSecurityDescriptor = 0 ' ...
lpAttr.bInheritHandle = True ' ...
'------------------------------------------------------------
'-
创建/打开注册表关键字...
'------------------------------------------------------------
rc =
RegCreateKeyEx(KeyRoot, KeyName, _
0, REG_SZ,
_
REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, lpAttr,
_
hKey, hDepth) '
创建/打开//KeyRoot//KeyName
If (rc <> ERROR_SUCCESS) Then GoTo
CreateKeyError ' 错误处理...
'------------------------------------------------------------
'-
创建/修改关键字值...
'------------------------------------------------------------
If
(SubKeyValue = "") Then SubKeyValue = " " ' 要让RegSetValueEx()
工作需要输入一个空格...
' 创建/修改关键字值
rc = RegSetValueEx(hKey,
SubKeyName, _
0, REG_SZ, _
SubKeyValue, LenB(StrConv(SubKeyValue,
vbFromUnicode)))
If (rc <>
ERROR_SUCCESS) Then GoTo CreateKeyError ' 错误处理
'------------------------------------------------------------
'-
关闭注册表关键字...
'------------------------------------------------------------
rc =
RegCloseKey(hKey) ' 关闭关键字
UpdateKey
= True ' 返回成功
Exit
Function ' 退出
CreateKeyError:
UpdateKey = False ' 设置错误返回代码
rc =
RegCloseKey(hKey) ' 试图关闭关键字
End Function
'-------------------------------------------------------------------------------------------------
'sample
usage - Debug.Print GetKeyValue(HKEY_CLASSES_ROOT,
"COMCTL.ListviewCtrl.1\CLSID",
"")
'-------------------------------------------------------------------------------------------------
Public
Function GetKeyValue(KeyRoot As Long, KeyName As String, SubKeyRef As String) As
String
Dim i As Long '
循环计数器
Dim rc As Long '
返回代码
Dim hKey As Long '
处理打开的注册表关键字
Dim hDepth As Long
'
Dim sKeyVal As String
Dim lKeyValType As
Long ' 注册表关键字数据类型
Dim tmpVal As
String ' 注册表关键字的临时存储器
Dim KeyValSize
As Long ' 注册表关键字变量尺寸
' 在 KeyRoot
{HKEY_LOCAL_MACHINE...} 下打开注册表关键字
'------------------------------------------------------------
rc =
RegOpenKeyEx(KeyRoot, KeyName, 0, KEY_ALL_ACCESS, hKey) ' 打开注册表关键字
If (rc <> ERROR_SUCCESS) Then GoTo GetKeyError '
处理错误...
tmpVal = String$(1024, 0) '
分配变量空间
KeyValSize = 1024 '
标记变量尺寸
'------------------------------------------------------------
'
检索注册表关键字的值...
'------------------------------------------------------------
rc =
RegQueryValueEx(hKey, SubKeyRef, 0, _
lKeyValType,
tmpVal, KeyValSize) ' 获得/创建关键字的值
If (rc
<> ERROR_SUCCESS) Then GoTo GetKeyError ' 错误处理
tmpVal = Left$(tmpVal, InStr(tmpVal, Chr(0)) - 1)
'------------------------------------------------------------
'
决定关键字值的转换类型...
'------------------------------------------------------------
Select Case
lKeyValType ' 搜索数据类型...
Case REG_SZ,
REG_EXPAND_SZ ' 字符串注册表关键字数据类型
sKeyVal =
tmpVal ' 复制字符串的值
Case
REG_DWORD ' 四字节注册表关键字数据类型
For i = Len(tmpVal) To 1 Step -1 ' 转换每一位
sKeyVal = sKeyVal + Hex(Asc(Mid(tmpVal, i, 1))) ' 一个字符一个字符地生成值。
Next
sKeyVal = Format$("&h" + sKeyVal) '
转换四字节为字符串
End Select
GetKeyValue =
sKeyVal ' 返回值
rc =
RegCloseKey(hKey) ' 关闭注册表关键字
Exit
Function ' 退出
GetKeyError: ' 错误发生过后进行清除...
GetKeyValue =
vbNullString ' 设置返回值为空字符串
rc =
RegCloseKey(hKey) ' 关闭注册表关键字
End
Function
Public Function DeleteValues(KeyRoot As Long, KeyName As String, SubKeyName
As String) As Boolean
Dim rc As Long
Dim hKey As Long
Dim
hDepth As Long
Dim lpAttr As SECURITY_ATTRIBUTES
lpAttr.nLength = 50
lpAttr.lpSecurityDescriptor = 0
lpAttr.bInheritHandle = True
rc = RegCreateKeyEx(KeyRoot,
KeyName, _
0, REG_SZ,
_
REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS,
lpAttr, _
hKey, hDepth)
If rc <>
ERROR_SUCCESS Then GoTo ErrorTary
rc = RegDeleteValue(hKey,
SubKeyName)
If rc <> ERROR_SUCCESS Then GoTo ErrorTary
DeleteValues = True
rc = RegCloseKey(hKey)
Exit
Function
ErrorTary:
DeleteValues = False
rc =
RegCloseKey(hKey)
End Function
Public Function DeleteKey(KeyRoot As Long, KeyName As String, subKey As
String) As Boolean
Dim rc As Long
Dim hKey As Long
Dim
hDepth As Long
Dim lpAttr As SECURITY_ATTRIBUTES
lpAttr.nLength =
50
lpAttr.lpSecurityDescriptor = 0
lpAttr.bInheritHandle =
True
rc = RegCreateKeyEx(KeyRoot, KeyName, 0, REG_SZ,
REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, lpAttr, hKey, hDepth)
If rc
<> ERROR_SUCCESS Then GoTo ErrorTary
rc = RegDeleteKey(hKey,
subKey)
If rc <> ERROR_SUCCESS Then GoTo ErrorTary
DeleteKey
= True
rc = RegCloseKey(hKey)
Exit Function
ErrorTary:
DeleteKey = False
rc = RegCloseKey(hKey)
End Function
Public Function DeleteKeyTree(KeyRoot As Long, KeyName As String, subKey As
String) As Boolean
Dim rc As Long
Dim hKey As Long
Dim
hDepth As Long
Dim lpAttr As SECURITY_ATTRIBUTES
lpAttr.nLength =
50
lpAttr.lpSecurityDescriptor = 0
lpAttr.bInheritHandle =
True
rc = RegCreateKeyEx(KeyRoot, KeyName, 0, REG_SZ,
REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, lpAttr, hKey, hDepth)
If rc
<> ERROR_SUCCESS Then GoTo ErrorTary
rc = SHDeleteKey(hKey,
subKey)
If rc <> ERROR_SUCCESS Then GoTo ErrorTary
DeleteKeyTree = True
rc = RegCloseKey(hKey)
Exit
Function
ErrorTary:
DeleteKeyTree = False
rc =
RegCloseKey(hKey)
End Function
