c++ - Qt错误: 'const class QString' has no member named 'toStdString'

Question

我收到此错误 error: 'const class QString' has no member named 'toStdString' 虽然 QString 有它。 (link) .

代码

    std::string Message::toStdString() const 
    {
        return m_string.toStdString();
    }

Answer 1

直接从这里复制答案:

How to convert QString to std::string?

QString qs;

// Either this if you use UTF-8 anywhere
std::string utf8_text = qs.toUtf8().constData();

// or this if you on Windows :-)
std::string current_locale_text = qs.toLocal8Bit().constData();