Returning hex value of utf8 string

[Dizgah]

I wrote a very simple test code,which receive a utf8 string from QLineEdit and display it in messagebox:

QString txtString = ui->lineEdit->text();
    QString scndString = txtString.toUtf8();
    QMessageBox msgBox;
 
    msgBox.setText(scndString);
    msgBox.exec();

QString txtString = ui->lineEdit->text();
    QString scndString = txtString.toUtf8();
    QMessageBox msgBox;

    msgBox.setText(scndString);
    msgBox.exec();

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Know I want to display utf8 hex value of string instead of string itself, but when I try to do this :

QString txtString = ui->lineEdit->text();
    QString scndString = txtString.toLatin1.toutf8.toHex();
    QMessageBox msgBox;
 
    msgBox.setText(scndString);
    msgBox.exec();

QString txtString = ui->lineEdit->text();
    QString scndString = txtString.toLatin1.toutf8.toHex();
    QMessageBox msgBox;

    msgBox.setText(scndString);
    msgBox.exec();

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I received this message:

error: 'txtString.QString::toLatin1' does not have class type QString scndString = txtString.toLatin1.toutf8.toHex();