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KEY.CPP
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1997-05-06
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// key.cpp : implementation file
//
// This is a part of the Microsoft Foundation Classes C++ library.
// Copyright (C) 1992-1995 Microsoft Corporation
// All rights reserved.
//
// This source code is only intended as a supplement to the
// Microsoft Foundation Classes Reference and related
// electronic documentation provided with the library.
// See these sources for detailed information regarding the
// Microsoft Foundation Classes product.
#include "stdafx.h"
#include "key.h"
#include <winreg.h>
#ifdef _DEBUG
#undef THIS_FILE
static char BASED_CODE THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CKey
void CKey::Close()
{
if (m_hKey != NULL)
{
LONG lRes = RegCloseKey(m_hKey);
ASSERT(lRes == ERROR_SUCCESS);
m_hKey = NULL;
}
}
BOOL CKey::Create(HKEY hKey, LPCTSTR lpszKeyName)
{
ASSERT(hKey != NULL);
return (RegCreateKey(hKey, lpszKeyName, &m_hKey) == ERROR_SUCCESS);
}
BOOL CKey::Open(HKEY hKey, LPCTSTR lpszKeyName)
{
ASSERT(hKey != NULL);
return (RegOpenKey(hKey, lpszKeyName, &m_hKey) == ERROR_SUCCESS);
}
BOOL CKey::SetStringValue(LPCTSTR lpszValue, LPCTSTR lpszValueName)
{
ASSERT(m_hKey != NULL);
return (RegSetValueEx(m_hKey, lpszValueName, NULL, REG_SZ,
(BYTE * const)lpszValue, (lstrlen(lpszValue)+1)*sizeof(TCHAR)) == ERROR_SUCCESS);
}
BOOL CKey::GetStringValue(CString& str, LPCTSTR lpszValueName)
{
ASSERT(m_hKey != NULL);
str.Empty();
DWORD dw = 0;
DWORD dwType = 0;
LONG lRes = RegQueryValueEx(m_hKey, (LPTSTR)lpszValueName, NULL, &dwType,
NULL, &dw);
if (lRes == ERROR_SUCCESS)
{
ASSERT(dwType == REG_SZ);
LPTSTR lpsz = str.GetBufferSetLength(dw);
lRes = RegQueryValueEx(m_hKey, (LPTSTR)lpszValueName, NULL, &dwType, (BYTE*)lpsz, &dw);
ASSERT(lRes == ERROR_SUCCESS);
str.ReleaseBuffer();
return TRUE;
}
return FALSE;
}