QT6（鼠标键盘事件）

QT6

---

鼠标键盘事件

#include "widget.h"
#include "./ui_widget.h"

#include <QMouseEvent>
#include <QKeyEvent>
#include <QMessageBox>
#include <QStatusBar>

Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    // 不用按下鼠标也有效果
    setMouseTracking(true);
    ui->setupUi(this);

    connect(ui->pushButton,&QPushButton::clicked,qApp,&QApplication::quit);
}

Widget::~Widget()
{
    delete ui;
}



void Widget::mouseMoveEvent(QMouseEvent *event)
{
    // 鼠标事件监听
    int x = event->pos().x();
    int y = event->pos().y();
    QString text = "坐标：" + QString::number(x) + "," + QString::number(y);
    ui->label->setText(text);

}

void Widget::keyPressEvent(QKeyEvent *event)
{
    // 鼠标事件监听
    if(event->key() == Qt::Key_Escape)
        qApp->quit();



    if(event->key() == Qt::Key_Q)
        QMessageBox::information(this,"按键监听","按下了Q键");

}

效果展示