qt鼠标自动跟随

#include "mlabel.h"
#include <QDebug>bgfb
#include <QEvent>
#include <QMouseEvent>
MLabel::MLabel(QWidget *parent) : QLabel(parent)
{
    setMouseTracking(true); //设置鼠标自动跟随
}

void MLabel::enterEvent(QEvent */*ev*/)
{
    qDebug() << "鼠标进入";
}

void MLabel::leaveEvent(QEvent */*ev*/)
{
    qDebug() << "鼠标离开";
}

void MLabel::mousePressEvent(QMouseEvent *event)


{
    QString str = QString("%1").arg(event->globalX());
    qDebug() << "鼠标按下" << str;
}

void MLabel::mouseMoveEvent(QMouseEvent *event)
{
    QString str = QString("%1 %2").arg(event->x()).arg(event->y());
    qDebug() << "鼠标移动" << str;
}