关于注册表操作

2003-01-07 03:24:58 79 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

WinForm开发基础之操作注册表在Windows操作系统中，注册表是一个存储配置信息和设置的重要数据库。它包含了系统和应用程序的配置信息，例如程序的安装路径、用户的个性化设置等适用场景。在WinForm应用程序中，注册表的操作通常用于保存应用程序的配置，如用户设置、窗口位置等。本文将介绍如何在WinForm中进行注册表操作，包括如何读取、写入、删除注册表项以及创建和删除键值。在WinForm应用程序中操作注册表是一个非常常见的需求，可以用于存储配置信息、程序设置等。通过类，开发者可以轻松地读取、写入、删除注册表键值。阅读详情

请问怎样在指定节点下建立子键

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holydiablo 2003-01-07

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给你一个模块
Attribute VB_Name = "mdlRegistry"

'这是一个操作注册表的Bas文件,其中包含可以建立新键值,删除
'键值,查询键值的函数.
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

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)
'删除键
Public Function DeleteKey(lPredefinedKey As Long, sKeyName As String)
Dim lRetVal As Long
Dim hKey As Long
lRetVal = RegOpenKeyEx(lPredefinedKey, sKeyName, 0, KEY_ALL_ACCESS, hKey)
lRetVal = RegDeleteKey(lPredefinedKey, sKeyName)
RegCloseKey (hKey)
End Function
'删除键值
Public Function DeleteValue(lPredefinedKey As Long, sKeyName As String, sValueName As String)
Dim lRetVal As Long
Dim hKey As Long

lRetVal = RegOpenKeyEx(lPredefinedKey, sKeyName, 0, KEY_ALL_ACCESS, hKey)
lRetVal = RegDeleteValue(hKey, sValueName)
RegCloseKey (hKey)
End Function
'赋值(下一层)
Public Function SetValueEx(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
SetValueEx = RegSetValueExString(hKey, sValueName, 0&, lType, sValue, Len(sValue))
Case REG_DWORD
lValue = vValue
SetValueEx = RegSetValueExLong(hKey, sValueName, 0&, lType, lValue, 4)
End Select

End Function
'获取值(下一层)
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 GoTo QueryValueExError

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

QueryValueExExit:

QueryValueEx = lrc
Exit Function

QueryValueExError:

Resume QueryValueExExit

End Function
'建立新键
Public Function CreateNewKey(lPredefinedKey As Long, sNewKeyName As String)
Dim hNewKey As Long
Dim lRetVal As Long

lRetVal = RegCreateKeyEx(lPredefinedKey, sNewKeyName, 0&, vbNullString, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, 0&, hNewKey, lRetVal)
RegCloseKey (hNewKey)
End Function

'Sub main()
' '函数在注册表的"HKEY_CURRENT_USER\Software"中建立了
' '一个SubKey1项并在其中建立了值，并在显示后删除建立
' '的值，如果你想通过RegEdit看到结果，可以将最后两句
' '删除，不过要记得手动删除建立的键值
' CreateNewKey HKEY_CURRENT_USER, "Software\SubKey1\SubKey2"
' SetKeyValue HKEY_CURRENT_USER, "Software\SubKey1\SubKey2", "Test", "This is just a test", REG_SZ
' MsgBox QueryValue(HKEY_CURRENT_USER, "Software\SubKey1\SubKey2", "Test")
' DeleteValue HKEY_CURRENT_USER, "Software\SubKey1\SubKey2", "Test"
' DeleteKey HKEY_CURRENT_USER, "Software\SubKey1\SubKey2"
'End Sub

'给指定的键值赋值
Public Function SetKeyValue(lPredefinedKey As Long, sKeyName As String, sValueName As String, vValueSetting As Variant, lValueType As Long)
Dim lRetVal As Long
Dim hKey As Long

lRetVal = RegOpenKeyEx(lPredefinedKey, sKeyName, 0, KEY_ALL_ACCESS, hKey)
lRetVal = SetValueEx(hKey, sValueName, lValueType, vValueSetting)
RegCloseKey (hKey)

End Function
'获取指定的键值
Public Function QueryValue(lPredefinedKey As Long, sKeyName As String, sValueName As String) As String
Dim lRetVal As Long
Dim hKey As Long
Dim vValue As Variant

lRetVal = RegOpenKeyEx(lPredefinedKey, sKeyName, 0, KEY_ALL_ACCESS, hKey)
lRetVal = QueryValueEx(hKey, sValueName, vValue)
QueryValue = vValue
RegCloseKey (hKey)
End Function

关于注册表操作

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