uncodeToString

String EncodeToString(String strEncode)
{
    wchar_t w;
    WideString strResult;
    strEncode = StringReplace(strEncode, "\\u", "\r\n0x", TReplaceFlags() << rfReplaceAll);
    TStringList *lst = new TStringList;
    lst->Text = strEncode;
 
    for (int i = 0; i < lst->Count; i++)
    {
        if (lst->Strings[i].Trim().Length() > 0)
        {
            w = lst->Strings[i].ToIntDef(0);
            strResult += WideString(w);
        }
    }
 
    delete lst;
 
    return String(strResult);
}

测试：
C/C++ code
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String str = "{\"name\":\"\\u52c7\\u4e0d\\u53ef\\u6321\"";
String reinfo = FXsrc(str, "\"name\":\"", NULL, "\"", 0);
 
Caption = EncodeToString(reinfo);