C++读取ini文件的类

取自：http://www.viksoe.dk/code/all_mfc.htm，里面有各种MFC常用的类

// Ini.h: interface for the CIni class.
//
// Written by Bjarke Viksoe (bjarke@viksoe.dk)
// Copyright (c) 2000.
//
// This code may be used in compiled form in any way you desire. This
// file may be redistributed by any means PROVIDING it is 
// not sold for profit without the authors written consent, and 
// providing that this notice and the authors name is included. 
//
// This file is provided "as is" with no expressed or implied warranty.
// The author accepts no liability if it causes any damage to you or your
// computer whatsoever. It's free, so don't hassle me about it.
//
// Beware of bugs.


#if !defined(AFX_INI_H__2478E9E2_E904_11D1_93C1_241C08C10000__INCLUDED_)
#define AFX_INI_H__2478E9E2_E904_11D1_93C1_241C08C10000__INCLUDED_#if _MSC_VER >= 1000
#pragma once
#endif // _MSC_VER >= 1000
//
// INI file class
//
// Author:
// Bjarke Viks鴈
// Description:
// Implements helper functions to access
// an .INI configuration file using
// conventional CString operations
//// Ini-file wrapper class
class CIni : public CObject  
{
public:CIni();CIni( LPCTSTR IniFilename );virtual ~CIni();// Methods
public:// Sets the current Ini-file to use.
   RETCODE SetIniFilename(LPCTSTR IniFilename);//// Reads an integer from the ini-file.UINT GetInt(LPCTSTR lpszSection, LPCTSTR lpszEntry, int nDefault=0);// Reads a boolean value from the ini-file.BOOL GetBoolean(LPCTSTR lpszSection, LPCTSTR lpszEntry, BOOL bDefault=FALSE);// Reads a string from the ini-file.CString GetString(LPCTSTR lpszSection, LPCTSTR lpszEntry, LPCTSTR lpszDefault=NULL);// Reads a binaryt lump of data from the ini-file.BOOL GetBinary(LPCTSTR lpszSection, LPCTSTR lpszEntry, BYTE** ppData, UINT* pBytes);//// Writes an integer to the ini-file.BOOL WriteInt(LPCTSTR lpszSection, LPCTSTR lpszEntry, int nValue);// Writes a boolean value to the ini-file.
   BOOL WriteBoolean(LPCTSTR lpszSection, LPCTSTR lpszEntry, BOOL bValue);// Writes a string to the ini-file.
   BOOL WriteString(LPCTSTR lpszSection, LPCTSTR lpszEntry, LPCTSTR lpszValue);// Writes a binary lump of data to the ini-file.
   BOOL WriteBinary(LPCTSTR lpszSection, LPCTSTR lpszEntry, LPBYTE pData, UINT nBytes);// Writes an 'expand string' to the ini-file.
   BOOL WriteExpandString(LPCTSTR lpszSection, LPCTSTR lpszEntry, LPCTSTR lpszValue);//// Removes an item from the current ini-file.
   BOOL DeleteKey(LPCTSTR lpszSection, LPCTSTR lpszEntry);// Removes a complete section from the ini-file.
   BOOL DeleteSection(LPCTSTR lpszSection);// Variables
protected:CString m_IniFilename; // The current ini-file used.
};#endif // !defined(AFX_INI_H__2478E9E2_E904_11D1_93C1_241C08C10000__INCLUDED_)

Ini.cpp

// Ini.cpp: implementation of the CIni class.
// Author: Bjarke Viks鴈
//
// Description:
// Thin wrapper around the Win32 Windows Profile (Ini-file configuration)
// interface.
//
//

#include "stdafx.h"
#include "Ini.h"#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif//
// Construction/Destruction
//

CIni::CIni()
{m_IniFilename.Empty();
}CIni::CIni(LPCTSTR IniFilename)
{SetIniFilename( IniFilename );
}CIni::~CIni()
{// Flush .ini file// (This should perhaps not be here. We risk to slow//  down the system and this would be done at a more appropriate//  time by the OS scheduler anyway)
   ::WritePrivateProfileString( NULL, NULL, NULL, m_IniFilename );
}//
// Methods
//#define MAX_INI_BUFFER 300   // Defines the maximum number of chars we can// read from the ini file 

RETCODE CIni::SetIniFilename(LPCTSTR IniFilename)
{ASSERT(AfxIsValidString(IniFilename));m_IniFilename = IniFilename;if( m_IniFilename.IsEmpty() ) return RET_INVALIDARGS;return RET_OK;
};UINT CIni::GetInt(LPCTSTR lpszSection, LPCTSTR lpszEntry, int nDefault)
{ASSERT(AfxIsValidString(lpszSection));ASSERT(AfxIsValidString(lpszEntry));if( m_IniFilename.IsEmpty() ) return 0; // error
   CString sDefault;sDefault.Format( _T("%d"), nDefault );CString s = GetString( lpszSection, lpszEntry, sDefault );return _ttol( s );
};CString CIni::GetString(LPCTSTR lpszSection, LPCTSTR lpszEntry, LPCTSTR lpszDefault)
{ASSERT(AfxIsValidString(lpszSection));ASSERT(AfxIsValidString(lpszEntry));if( m_IniFilename.IsEmpty() ) return CString();CString s;long ret = ::GetPrivateProfileString( lpszSection, lpszEntry, lpszDefault, s.GetBuffer( MAX_INI_BUFFER ), MAX_INI_BUFFER, m_IniFilename );s.ReleaseBuffer();if( ret==0 ) return CString(lpszDefault);return s;
};BOOL CIni::GetBoolean(LPCTSTR lpszSection, LPCTSTR lpszEntry, BOOL bDefault)
{CString s = GetString(lpszSection,lpszEntry);if( s.IsEmpty() ) return bDefault;TCHAR c = _totupper( s[0] );switch( c ) {case _T('Y'): // YEScase _T('1'): // 1 (binary)case _T('O'): // OKreturn TRUE;default:return FALSE;};
};BOOL CIni::GetBinary(LPCTSTR lpszSection, LPCTSTR lpszEntry, BYTE** ppData, UINT* pBytes)
{ASSERT(AfxIsValidString(lpszSection));ASSERT(AfxIsValidString(lpszEntry));return FALSE;
};BOOL CIni::WriteInt(LPCTSTR lpszSection, LPCTSTR lpszEntry, int nValue)
{ASSERT(AfxIsValidString(lpszSection));ASSERT(AfxIsValidString(lpszEntry));CString s;s.Format( _T("%d"), nValue );return WriteString( lpszSection, lpszEntry, s );
};BOOL CIni::WriteBoolean(LPCTSTR lpszSection, LPCTSTR lpszEntry, BOOL bValue)
{CString s;bValue ? s=_T("Y") : s=_T("N");return WriteString( lpszSection, lpszEntry, s );
};BOOL CIni::WriteString(LPCTSTR lpszSection, LPCTSTR lpszEntry, LPCTSTR lpszValue)
{ASSERT(AfxIsValidString(lpszSection));ASSERT(AfxIsValidString(lpszEntry));if( m_IniFilename.IsEmpty() ) return RET_NOTINITIALIZED;return ::WritePrivateProfileString( lpszSection, lpszEntry, lpszValue, m_IniFilename );
};BOOL CIni::WriteBinary(LPCTSTR lpszSection, LPCTSTR lpszEntry, LPBYTE pData, UINT nBytes)
{ASSERT(AfxIsValidString(lpszSection));ASSERT(AfxIsValidString(lpszEntry));return FALSE;
};BOOL CIni::WriteExpandString(LPCTSTR lpszSection, LPCTSTR lpszEntry, LPCTSTR lpszValue)
{ASSERT(AfxIsValidString(lpszSection));ASSERT(AfxIsValidString(lpszEntry));return FALSE;
};BOOL CIni::DeleteKey(LPCTSTR lpszSection, LPCTSTR lpszEntry)
{ASSERT(AfxIsValidString(lpszSection));ASSERT(AfxIsValidString(lpszEntry));if( m_IniFilename.IsEmpty() ) return RET_NOTINITIALIZED;return ::WritePrivateProfileString( lpszSection, lpszEntry, NULL, m_IniFilename );
};BOOL CIni::DeleteSection(LPCTSTR lpszSection)
{ASSERT(AfxIsValidString(lpszSection));if( m_IniFilename.IsEmpty() ) return RET_NOTINITIALIZED;return ::WritePrivateProfileString( lpszSection, NULL, NULL, m_IniFilename );
};