vc中GB2312,BIG5,Unicode相互转换

本文介绍了将GB2312、BIG5编码转换为Unicode编码,以及从Unicode编码转换回GB2312和BIG5编码的方法。包括了具体的函数实现和关键步骤。

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  //GB2312 转换成 Unicode:

wchar_t* GB2312ToUnicode(const char* szGBString)
{
        UINT nCodePage = 936; //GB2312
        int nLength=MultiByteToWideChar(nCodePage,0,szGBString,-1,NULL,0);
        wchar_t* pBuffer = new wchar_t[nLength+1];
        MultiByteToWideChar(nCodePage,0,szGBString,-1,pBuffer,nLength);
        pBuffer[nLength]=0;
        return pBuffer;
}
//BIG5 转换成 Unicode:
wchar_t* BIG5ToUnicode(const char* szBIG5String)
{
        UINT nCodePage = 950; //BIG5
        int nLength=MultiByteToWideChar(nCodePage,0,szBIG5String,-1,NULL,0);
        wchar_t* pBuffer = new wchar_t[nLength+1];
        MultiByteToWideChar(nCodePage,0,szBIG5String,-1,pBuffer,nLength);
        pBuffer[nLength]=0;
        return pBuffer;
}
//Unicode 转换成 GB2312:
char* UnicodeToGB2312(const wchar_t* szUnicodeString)
{
        UINT nCodePage = 936; //GB2312
        int nLength=WideCharToMultiByte(nCodePage,0,szUnicodeString,-1,NULL,0,NULL,NULL);
        char* pBuffer=new char[nLength+1];
        WideCharToMultiByte(nCodePage,0,szUnicodeString,-1,pBuffer,nLength,NULL,NULL);
        pBuffer[nLength]=0;
        return pBuffer;
}
//Unicode 转换成 BIG5:
char* UnicodeToBIG5(const wchar_t* szUnicodeString)
{
        UINT nCodePage = 950; //BIG5
        int nLength=WideCharToMultiByte(nCodePage,0,szUnicodeString,-1,NULL,0,NULL,NULL);
        char* pBuffer=new char[nLength+1];
        WideCharToMultiByte(nCodePage,0,szUnicodeString,-1,pBuffer,nLength,NULL,NULL);
        pBuffer[nLength]=0;
        return pBuffer;
}
//繁体中文BIG5 转换成 简体中文 GB2312
char* BIG5ToGB2312(const char* szBIG5String)
{
        LCID lcid = MAKELCID(MAKELANGID(LANG_CHINESE,SUBLANG_CHINESE_SIMPLIFIED),SORT_CHINESE_PRC);

        wchar_t* szUnicodeBuff = BIG5ToUnicode(szBIG5String);
        char* szGB2312Buff = UnicodeToGB2312(szUnicodeBuff);

        int nLength = LCMapString(lcid,LCMAP_SIMPLIFIED_CHINESE, szGB2312Buff,-1,NULL,0);
        char* pBuffer = new char[nLength + 1];
        LCMapString(0x0804,LCMAP_SIMPLIFIED_CHINESE,szGB2312Buff,-1,pBuffer,nLength);
        pBuffer[nLength] = 0;
       
        delete[] szUnicodeBuff;
        delete[] szGB2312Buff;
        return pBuffer;
}
//简体中文 GB2312 转换成 繁体中文BIG5
char* GB2312ToBIG5(const char* szGBString)
{
        LCID lcid = MAKELCID(MAKELANGID(LANG_CHINESE,SUBLANG_CHINESE_SIMPLIFIED),SORT_CHINESE_PRC);

        int nLength = LCMapString(lcid,LCMAP_TRADITIONAL_CHINESE,szGBString,-1,NULL,0);
        char* pBuffer=new char[nLength+1];
        LCMapString(lcid,LCMAP_TRADITIONAL_CHINESE,szGBString,-1,pBuffer,nLength);
        pBuffer[nLength]=0;

        wchar_t* pUnicodeBuff = GB2312ToUnicode(pBuffer);
        char* pBIG5Buff = UnicodeToBIG5(pUnicodeBuff);

        delete[] pBuffer;
        delete[] pUnicodeBuff;
        return pBIG5Buff;
}

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