【Qt】Qt在Win系统上的消息通知

需求描述： Qt应用程序在windows系统上发送win消息通知

代码

代码实现很简单，主要调用的接口为QSystemTrayIcon.showMessage()

使用的Demo为 【Qt】 鼠标 hover 操作时弹出文字气泡_欧恩意的博客-CSDN博客 这篇文章，结合图片隐藏显示，在系统显示通知。

widget.h

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <QImage>
#include <QPixmap>
#include <QSystemTrayIcon>
#include <QMenu>
#include <QIcon>
#include <QAction>

QT_BEGIN_NAMESPACE
namespace Ui {
    
     class Widget; }
QT_END_NAMESPACE

class Widget : public QWidget
{
    
    
    Q_OBJECT

public:
    Widget(QWidget *parent = nullptr);
    ~Widget();
public:
    QSystemTrayIcon *trayIcon;
private slots:
    void stTrayIconActive(QSystemTrayIcon::ActivationReason acReason);
    void on_pushButton_clicked();

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);

    QPixmap img(":/Win11.jpg");

    ui->label->setPixmap(img);
    ui->label->setScaledContents(true);
    ui->label->setToolTip(QString("壁纸《Win11.png》"));
    ui->pushButton->setToolTip(QString("隐藏或显示图片"));

    QIcon icon = QApplication::style()->standardIcon((QStyle::StandardPixmap)0);
    QIcon icon1 = QApplication::style()->standardIcon((QStyle::StandardPixmap)9);

    //设置通知栏的图标
    trayIcon = new QSystemTrayIcon(this);
    trayIcon->setIcon(icon);

    //设置通知栏的单击事件
    connect(trayIcon, SIGNAL(activated(QSystemTrayIcon::ActivationReason)), this, SLOT(stTrayIconActive(QSystemTrayIcon::ActivationReason)));

    //设置通知栏的右键菜单
    QMenu * menu = new QMenu();

    //设置菜单项目
    QAction *actionHide = new QAction(icon, "Hide", menu);

    menu->addAction(actionHide);
    trayIcon->setContextMenu(menu);
    // 设置Action的响应
    connect(actionHide, SIGNAL(triggered()), this, SLOT(stActionHide()));
    trayIcon->show();

    //托盘的消息提示
    trayIcon->showMessage("title", "this is a message", icon1);
}

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

void Widget::stTrayIconActive(QSystemTrayIcon::ActivationReason acReason)
{
    
    
    switch (acReason)
    {
    
    
    case QSystemTrayIcon::Trigger:
    {
    
    
        showNormal();
        break;
    }
    default:
        ;
    }
}

void Widget::on_pushButton_clicked()
{
    
    
    QIcon icon = QApplication::style()->standardIcon((QStyle::StandardPixmap)0);
    QIcon icon1 = QApplication::style()->standardIcon((QStyle::StandardPixmap)9);

    if(ui->label->isVisible())
    {
    
    
        trayIcon->showMessage("提醒", "隐藏图片", icon1);
        ui->label->hide();
    }
    else
    {
    
    
        trayIcon->showMessage("提醒", "显示图片", icon1);
        ui->label->setVisible(true);
    }
}

widget.ui

演示