Qt中实现鼠标一段时间不用，自动隐藏

Widget::Widget(QWidget *parent) :

    QWidget(parent),

    ui(new Ui::Widget)

{

    ui->setupUi(this);

    this->setMouseTracking(true);

    timer_ = new QTimer(this);

    connect(timer_ ,&QTimer::timeout, this, [=](){this->setCursor(Qt::BlankCursor);});

    timer_->start(10000);

}

Widget::~Widget()

{

    delete ui;

}

void Widget::mouseMoveEvent(QMouseEvent *event)

{

    qDebug()<<"move";

     this->setCursor(Qt::ArrowCursor);

}

通过使用定时器，和mouseMouveEvent事件实现。