setOverwriteMode(true);

setObjectName("input");

auto k = keyEvent->key();

auto m = keyEvent->modifiers();

// Check for Shift+Enter

if(m == Qt::ShiftModifier && (k == Qt::Key_Enter || k == Qt::Key_Return)){

// Extract Expression from document

QString inputExp = QPlainTextEdit::toPlainText();

qDebug() << "\nSignal: " << inputExp << "\n";

// Send Expression to be evaluated

emit textUpdated(inputExp);

}

else{

// The inherited method handles all other events

QPlainTextEdit::keyPressEvent(keyEvent);

}