今天為瞭解決編碼的問題，整理了一些代碼放到這裡！

我在開放中經常會遇到編碼的問題,今天我碰到的就是在英文作業系統下顯示亂碼的問題,讓我頭疼了大半天,我在這裡整理出來這些代碼,希望對你有用,哈哈!上一篇我轉了一篇編碼的基礎知識有興趣可以看看!

判斷是否是GB2132:
int nWSize = MultiByteToWideChar(936,MB_ERR_INVALID_CHARS,strInfo,-1,NULL,0);
        int error = GetLastError();
        if (error == ERROR_NO_UNICODE_TRANSLATION)
        {
            TGLOGFILE(("no GB2312"), (""));
        }
判斷是否是UTF8,只要把936用CP_UTF8代替即可.

//轉換任何字元集之間的代碼，使用方法：
eg: UTF8轉到GB2312    CString sResult = Convert(strUtf8, CP_UTF8, 936);

CString Convert(CString str, int sourceCodepage, int targetCodepage)
{
    int len=str.GetLength();

    int unicodeLen=MultiByteToWideChar(sourceCodepage,0,str,-1,NULL,0);

    wchar_t* pUnicode;
    pUnicode=new wchar_t[unicodeLen+1];

    memset(pUnicode,0,(unicodeLen+1)*sizeof(wchar_t));

    MultiByteToWideChar(sourceCodepage,0,str,-1,(LPWSTR)pUnicode,unicodeLen);

    BYTE * pTargetData = NULL;
    int targetLen=WideCharToMultiByte(targetCodepage,0,(LPWSTR)pUnicode,-1,(char *)pTargetData,0,NULL,NULL);

    pTargetData=new BYTE[targetLen+1];
    memset(pTargetData,0,targetLen+1);

    WideCharToMultiByte(targetCodepage,0,(LPWSTR)pUnicode,-1,(char *)pTargetData,targetLen,NULL,NULL);

    CString rt;
    rt.Format("%s",pTargetData);

    delete []pUnicode;
    delete []pTargetData;
    return rt;

}

該方法是固化的一個UTF8toGB2312的一個函數:
CString ConvertUTF8toGB2312(const char *pData, size_t size)
{

    size_t n = MultiByteToWideChar(CP_UTF8, 0, pData, (int)size, NULL, 0);
    WCHAR   *   pChar   =   new   WCHAR[n+1];

    n = MultiByteToWideChar(CP_UTF8, 0, pData, (int)size, pChar, n);
    pChar[n]=0;

    n = WideCharToMultiByte(936, 0, pChar, -1, 0, 0, 0, 0);
    char *p = new char[n+1];

    n = WideCharToMultiByte(936, 0, pChar, -1, p, (int)n, 0, 0);
    CString result(p);

    delete []pChar;
    delete []p;
    return  result;
}

我們需要不斷積累和總結,我會把碰到的頭疼問題放到這裡,希望我不會再問同樣問題頭疼!

作者:wangweixing2000