QML Error: Unknown method return type: std::string

Question

I use QML. Ihave this c++ code

#include <QObject>

class ShowTime : public QObject
{
    Q_OBJECT
public:
    explicit ShowTime(QObject *parent = nullptr);
    Q_INVOKABLE std::string whatToShow(int index);

private:
    std::string mWhatToShow = "";
};

In QML I do this:

Text {
                font.pixelSize: 25
                height: 30
                text: showTime.whatToShow(index)
            }

But as a result I get an error:

Error: Unknown method return type: std::string .

What am I doing wrong?

Answer 1

@GrecKo Yes it helped. Thank you. I changed std::string to QString.