How to convert QString to std::string?

Question

I am trying to do something like this: ``` QString string; // do things... std::cout << string << std::endl; ``` but the code doesn't compile. How to output the content of qstring into the console (e.g. for debugging purposes or other reasons)? How to convert `QString` to `std::string`?

Accepted Answer

One of the things you should remember when converting `QString` to `std::string` is the fact that `QString` is UTF-16 encoded while `std::string`... May have any encodings.

So the best would be either:

```
QString qs;

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

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

The suggested (accepted) method may work if you specify codec.

See: http://doc.qt.io/qt-5/qstring.html#toLatin1

How to convert QString to std::string?

Solution

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