std::string cstr;
QString qstring;
//**從std::string 到QString
qstring = QString(QString::fromLocal8Bit(cstr.c_str()));
//**從QString 到 std::string
cstr = string((const char *)qstring.toLocal8Bit());
std::string cstr;
QString qstring;
//**從std::string 到QString
qstring = QString(QString::fromLocal8Bit(cstr.c_str()));
//**從QString 到 std::string
cstr = string((const char *)qstring.toLocal8Bit());