Qt--实现程序系统托盘

一、展示效果

二、具体操作

widget.h

#ifndef
#define

#include <QWidget>
#include <QCommonStyle>
#include <QSystemTrayIcon>
#include <QAction>
#include <QMenu>

QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACE

class Widget : public QWidget
{
    Q_OBJECT

public:
    Widget(QWidget *parent = nullptr);
    ~Widget();

    QSystemTrayIcon *trayIcon;
    QAction *minimizeAction;
    QAction *restoreAction;
    QAction *quitAction;
    QMenu   *trayIconMenu;

private slots:
    void trayiconActivated(QSystemTrayIcon::ActivationReason reason);

private:
    Ui::Widget *ui;
};
#endif// WIDGET_H

widget.cpp

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

Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);
    setWindowFlags(Qt::FramelessWindowHint);
    setAttribute(Qt::WA_TranslucentBackground);

    //创建托盘图标
    QIcon icon = QIcon(":images/logo.png");
    trayIcon = new QSystemTrayIcon(this);
    trayIcon->setIcon(icon);
    trayIcon->setToolTip(tr("速度仪"));
    QString titlec=tr("速度仪");
    QString textc=tr("速度仪：给你丝滑版的享受");
    trayIcon->show();

    //弹出气泡提示
    trayIcon->showMessage(titlec,textc,QSystemTrayIcon::Information,5000);

    //添加单/双击鼠标相应
    connect(trayIcon,SIGNAL(activated(QSystemTrayIcon::ActivationReason)),
                this,SLOT(trayiconActivated(QSystemTrayIcon::ActivationReason)));

    //创建监听行为
    minimizeAction = new QAction(tr("最小化 (&I)"), this);
    connect(minimizeAction, SIGNAL(triggered()), this, SLOT(hide()));
    restoreAction = new QAction(tr("还原 (&R)"), this);
    connect(restoreAction, SIGNAL(triggered()), this, SLOT(showNormal()));
    quitAction = new QAction(tr("退出 (&Q)"), this);
    connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));

    //创建右键弹出菜单
    trayIconMenu = new QMenu(this);
    trayIconMenu->addAction(minimizeAction);
    trayIconMenu->addAction(restoreAction);
    trayIconMenu->addSeparator();
    trayIconMenu->addAction(quitAction);
    trayIcon->setContextMenu(trayIconMenu);
}

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

void Widget::trayiconActivated(QSystemTrayIcon::ActivationReason reason)
{
    switch (reason)
    {
    case QSystemTrayIcon::Trigger:
        //单击托盘图标
    case QSystemTrayIcon::DoubleClick:
        //双击托盘图标
        this->showNormal();
        this->raise();
        break;
    default:
        break;
    }
}