QT Qstring Qt中文编码和QString类Unicode编码转换

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1 window中文GBK编码和Unicode编码转换//GBK‐> QStringQString str = QString::fromLocal8Bit("新浪微博");//QString ‐> GBKQString text = ui.lineEdit‐>text();QByteArray bytes = text.toLocal8Bit();const char* gbk = bytes.data();

2 Linux中文中文编码和Unicode编码转换UTF‐8‐> QString :char utf8[] = {0xE4 ,0xBD, 0xA0, 0xE5, 0xA5, 0xBD, 0};   QString str2 = QString::fromUtf8(utf8);QString ‐> UTF‐8:QString text = ui.lineEdit‐>text();QByteArray bytes = text.toUtf8();const char* utf8 = bytes.data();int size = bytes.size();3 使用QTextCodec类实现编码<pre name="code" class="cpp">// QString(Unicode) ‐> std::string (GBK)static string FromUnicode(const QString& qstr){QTextCodec* pCodec = QTextCodec::codecForName("gb2312");if(!pCodec) return "";QByteArray arr = pCodec‐>fromUnicode(qstr);string cstr = arr.data();return cstr;}// std::string (GBK) ‐> QString(Unicode)static QString ToUnicode(const string& cstr){QTextCodec* pCodec = QTextCodec::codecForName("gb2312");if(!pCodec) return "";QString qstr = pCodec‐>toUnicode(cstr.c_str(), cstr.length());return qstr;}

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