#ifndef MyListWidget_H
#define MyListWidget_H

#include <QListWidget>
#include <QKeyEvent>
#include <QDebug>

class MyListWidget : public QListWidget
{
    Q_OBJECT
public:
    explicit MyListWidget(QWidget *parent = 0):
    QListWidget(parent)
{
}

public slots:
  void MyPressed(QKeyEvent *event);

protected:
  void keyPressEvent(QKeyEvent *event)
  {
    if (event->key() == Qt::Key_A)
      qDebug()<<"Абра кадабра";
    //Или
    emit MyPressed(event);
  }

};

#endif // MyListWidget_H