怎么让QFrame接收KeyPressEvent? [复制链接]

     我重写了

  void Snake::keyPressEvent(QKeyEvent *e){
    qDebug()<<"key press:"<<e->key();

    if(this->currentStatus == qnake::BeforeStart){
        this->start();
        return ;
    }
    if(e->key() == Qt::Key_Up){
        this->setDir(qnake::Up);
    }else if(e->key() == Qt::Key_Down){
        this->setDir(qnake::Down);
    }else if(e->key() == Qt::Key_Left){
        this->setDir(qnake::Left);
    }else if(e->key() == Qt::Key_Right){
        this->setDir(qnake::Right);
    }
    QFrame::keyPressEvent(e);
}

可qDebug()执行