This class--CRegKey--- is used for operate on register.if you want to get more,please goto www.confach.533.net
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1).H File
// RegKey.h: interface for the CRegKey class.
//
//////////////////////////////////////////////////////////////////////
#if !defined(AFX_REGKEY_H__47138179_D3D9_4608_8C98_CC2C7336B911__INCLUDED_)
#define AFX_REGKEY_H__47138179_D3D9_4608_8C98_CC2C7336B911__INCLUDED_
#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
class CRegKey
{
public:
CRegKey();
virtual ~CRegKey();
// Attributes
public:
operator HKEY() const;
HKEY m_hKey;
// Operations
public:
LONG SetValue(DWORD dwValue, LPCTSTR lpszValueName);
LONG QueryValue(DWORD& dwValue, LPCTSTR lpszValueName);
LONG QueryValue(LPTSTR szValue, LPCTSTR lpszValueName, DWORD* pdwCount);
LONG SetValue(LPCTSTR lpszValue, LPCTSTR lpszValueName = NULL);
LONG SetKeyValue(LPCTSTR lpszKeyName, LPCTSTR lpszValue, LPCTSTR lpszValueName = NULL);
static LONG WINAPI SetValue(HKEY hKeyParent, LPCTSTR lpszKeyName,
LPCTSTR lpszValue, LPCTSTR lpszValueName = NULL);
LONG Create(HKEY hKeyParent, LPCTSTR lpszKeyName,
LPTSTR lpszClass = REG_NONE, DWORD dwOptions = REG_OPTION_NON_VOLATILE,
REGSAM samDesired = KEY_ALL_ACCESS,
LPSECURITY_ATTRIBUTES lpSecAttr = NULL,
LPDWORD lpdwDisposition = NULL);
LONG Open(HKEY hKeyParent, LPCTSTR lpszKeyName,
REGSAM samDesired = KEY_ALL_ACCESS);
LONG Close();
HKEY Detach();
void Attach(HKEY hKey);
LONG DeleteSubKey(LPCTSTR lpszSubKey);
LONG RecurseDeleteKey(LPCTSTR lpszKey);
LONG DeleteValue(LPCTSTR lpszValue);
};
#endif // !defined(AFX_REGKEY_H__47138179_D3D9_4608_8C98_CC2C7336B911__INCLUDED_)
2).CPP File
/****************************************************************/
/* */
/* RegKey.cpp: implementation of the CRegKey class. */
/* */
/* This is an clone of the ATL CRegKey from Microsoft. */
/* */
/****************************************************************/
#include "stdafx.h"
#include "RegKey.h"
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif
CRegKey::CRegKey()
{
m_hKey = NULL;
}
CRegKey::~CRegKey()
{
Close();
}
/********************************************************************/
/* */
/* Function name : operator HKEY */
/* Description : Converts CRegKey object to an HKEY. */
/* */
/********************************************************************/
CRegKey::operator HKEY() const
{
return m_hKey;
}
/********************************************************************/
/* */
/* Function name : Detach */
/* Description : Detaches m_hKey from the CregKey object */
/* */
/********************************************************************/
HKEY CRegKey::Detach()
{
HKEY hKey = m_hKey;
m_hKey = NULL;
return hKey;
}
/********************************************************************/
/* */
/* Function name : Attach */
/* Description : Attaches registry key handle to CRegKeyobject. */
/* */
/********************************************************************/
void CRegKey::Attach(HKEY hKey)
{
ASSERT(m_hKey == NULL);
m_hKey = hKey;
}
/********************************************************************/
/* */
/* Function name : DeleteSubKey */
/* Description : Deletes the specified key. */
/* */
/********************************************************************/
LONG CRegKey::DeleteSubKey(LPCTSTR lpszSubKey)
{
ASSERT(m_hKey != NULL);
return RegDeleteKey(m_hKey, lpszSubKey);
}
/********************************************************************/
/* */
/* Function name : DeleteValue */
/* Description : Deletes a value field of the key identified by */
/* m_hKey. */
/* */
/********************************************************************/
LONG CRegKey::DeleteValue(LPCTSTR lpszValue)
{
ASSERT(m_hKey != NULL);
return RegDeleteValue(m_hKey, (LPTSTR)lpszValue);
}
/********************************************************************/
/* */
/* Function name : Close */
/* Description : Releases m_hKey. */
/* */
/********************************************************************/
LONG CRegKey::Close()
{
LONG lRes = ERROR_SUCCESS;
if (m_hKey != NULL)
{
lRes = RegCloseKey(m_hKey);
m_hKey = NULL;
}
return lRes;
}
/********************************************************************/
/* */
/* Function name : Create */
/* Description : Creates or opens the specified key. */
/* */
/********************************************************************/
LONG CRegKey::Create(HKEY hKeyParent, LPCTSTR lpszKeyName,
LPTSTR lpszClass, DWORD dwOptions, REGSAM samDesired,
LPSECURITY_ATTRIBUTES lpSecAttr, LPDWORD lpdwDisposition)
{
ASSERT(hKeyParent != NULL);
DWORD dw;
HKEY hKey = NULL;
LONG lRes = RegCreateKeyEx(hKeyParent, lpszKeyName, 0,
lpszClass, dwOptions, samDesired, lpSecAttr, &hKey, &dw);
if (lpdwDisposition != NULL)
*lpdwDisposition = dw;
if (lRes == ERROR_SUCCESS)
{
lRes = Close();
m_hKey = hKey;
}
return lRes;
}
/********************************************************************/
/* */
/* Function name : Open */
/* Description : Opens the specified key. */
/* */
/********************************************************************/
LONG CRegKey::Open(HKEY hKeyParent, LPCTSTR lpszKeyName, REGSAM samDesired)
{
ASSERT(hKeyParent != NULL);
HKEY hKey = NULL;
LONG lRes = RegOpenKeyEx(hKeyParent, lpszKeyName, 0, samDesired, &hKey);
if (lRes == ERROR_SUCCESS)
{
lRes = Close();
ASSERT(lRes == ERROR_SUCCESS);
m_hKey = hKey;
}
return lRes;
}
/********************************************************************/
/* */
/* Function name : QueryValue */
/* Description : Retrieves the data for a specified value field. */
/* */
/********************************************************************/
LONG CRegKey::QueryValue(DWORD& dwValue, LPCTSTR lpszValueName)
{
DWORD dwType = NULL;
DWORD dwCount = sizeof(DWORD);
LONG lRes = RegQueryValueEx(m_hKey, (LPTSTR)lpszValueName, NULL, &dwType,
(LPBYTE)&dwValue, &dwCount);
ASSERT((lRes!=ERROR_SUCCESS) || (dwType == REG_DWORD));
ASSERT((lRes!=ERROR_SUCCESS) || (dwCount == sizeof(DWORD)));
return lRes;
}
/********************************************************************/
/* */
/* Function name : QueryValue */
/* Description : Retrieves the data for a specified value field. */
/* */
/********************************************************************/
LONG CRegKey::QueryValue(LPTSTR szValue, LPCTSTR lpszValueName, DWORD* pdwCount)
{
ASSERT(pdwCount != NULL);
DWORD dwType = NULL;
LONG lRes = RegQueryValueEx(m_hKey, (LPTSTR)lpszValueName, NULL, &dwType,
(LPBYTE)szValue, pdwCount);
ASSERT((lRes!=ERROR_SUCCESS) || (dwType == REG_SZ) ||
(dwType == REG_MULTI_SZ) || (dwType == REG_EXPAND_SZ));
return lRes;
}
/********************************************************************/
/* */
/* Function name : SetValue */
/* Description : Stores data in a specified value field. */
/* */
/********************************************************************/
LONG WINAPI CRegKey::SetValue(HKEY hKeyParent, LPCTSTR lpszKeyName, LPCTSTR lpszValue, LPCTSTR lpszValueName)
{
ASSERT(lpszValue != NULL);
CRegKey key;
LONG lRes = key.Create(hKeyParent, lpszKeyName);
if (lRes == ERROR_SUCCESS)
lRes = key.SetValue(lpszValue, lpszValueName);
return lRes;
}
/********************************************************************/
/* */
/* Function name : SetKeyValue */
/* Description : Stores data in a specified value field of a */
/* specified key. */
/* */
/********************************************************************/
LONG CRegKey::SetKeyValue(LPCTSTR lpszKeyName, LPCTSTR lpszValue, LPCTSTR lpszValueName)
{
ASSERT(lpszValue != NULL);
CRegKey key;
LONG lRes = key.Create(m_hKey, lpszKeyName);
if (lRes == ERROR_SUCCESS)
lRes = key.SetValue(lpszValue, lpszValueName);
return lRes;
}
/********************************************************************/
/* */
/* Function name : SetValue */
/* Description : Stores data in a specified value field. */
/* */
/********************************************************************/
LONG CRegKey::SetValue(DWORD dwValue, LPCTSTR lpszValueName)
{
ASSERT(m_hKey != NULL);
return RegSetValueEx(m_hKey, lpszValueName, NULL, REG_DWORD,
(BYTE * const)&dwValue, sizeof(DWORD));
}
/********************************************************************/
/* */
/* Function name : SetValue */
/* Description : Stores data in a specified value field. */
/* */
/********************************************************************/
LONG CRegKey::SetValue(LPCTSTR lpszValue, LPCTSTR lpszValueName)
{
ASSERT(lpszValue != NULL);
ASSERT(m_hKey != NULL);
return RegSetValueEx(m_hKey, lpszValueName, NULL, REG_SZ,
(BYTE * const)lpszValue, (lstrlen(lpszValue)+1)*sizeof(TCHAR));
}
/********************************************************************/
/* */
/* Function name : RecurseDeleteKey */
/* Description : Deletes the specified key and explicitly deletes */
/* all subkeys. */
/* */
/********************************************************************/
LONG CRegKey::RecurseDeleteKey(LPCTSTR lpszKey)
{
CRegKey key;
LONG lRes = key.Open(m_hKey, lpszKey, KEY_READ | KEY_WRITE);
if (lRes != ERROR_SUCCESS)
return lRes;
FILETIME time;
DWORD dwSize = 256;
TCHAR szBuffer[256];
while (RegEnumKeyEx(key.m_hKey, 0, szBuffer, &dwSize, NULL, NULL, NULL,
&time)==ERROR_SUCCESS)
{
lRes = key.RecurseDeleteKey(szBuffer);
if (lRes != ERROR_SUCCESS)
return lRes;
dwSize = 256;
}
key.Close();
return DeleteSubKey(lpszKey);
}