set text to qlineedit on focus

user4592357

i wanna set text to line edit whenever the focus is on it. i searched online and found out that this is possible in qt5 but not in qt4. but that doesn't matter.

here's my code:

class some_class {

    Q_OBJECT

public:
    some_class() {

        // some code...

        lineEdit = new QLineEdit; 
        QObject::connect(lineEdit, &QLineEdit::focusInEvent(QFocusEvent *), lineEdit, [this]() {
            lineEdit->setText("some_text");
        });
    }

protected slots:
    // some slots...

private:
     QLineEdit *lineEdit;
     // other members...
};

and here's the error i get for QFocusEvent *event's asterisk :

error: expected primary-expression before '*' token

what does this mean?

by the way, i've also tred this which didn't work either:

QObject::connect(lineEdit, &QLineEdit::focusInEvent, lineEdit, [this]() {
    lineEdit->setText("some_text");
});

dheerendra

focusInEvent is protected function. You will not be use it like this in lambda. You can subclass QLineEdit and re-implement focusInEvent function to make your use case.