Qt-QSystemTrayIcon实现系统托盘

 1 QT       += core gui
 2 
 3 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 4 
 5 CONFIG += c++11
 6 
 7 # The following define makes your compiler emit warnings if you use
 8 # any Qt feature that has been marked deprecated (the exact warnings
 9 # depend on your compiler). Please consult the documentation of the
10 # deprecated API in order to know how to port your code away from it.
11 DEFINES += QT_DEPRECATED_WARNINGS
12 
13 # You can also make your code fail to compile if it uses deprecated APIs.
14 # In order to do so, uncomment the following line.
15 # You can also select to disable deprecated APIs only up to a certain version of Qt.
16 #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
17 
18 SOURCES += \
19     main.cpp \
20     mainwindow.cpp
21 
22 HEADERS += \
23     mainwindow.h
24 
25 FORMS += \
26     mainwindow.ui
27 
28 LIBS += -lUser32  // 这个window的引用
29 
30 
31 # Default rules for deployment.
32 qnx: target.path = /tmp/$${TARGET}/bin
33 else: unix:!android: target.path = /opt/$${TARGET}/bin
34 !isEmpty(target.path): INSTALLS += target
35 
36 RESOURCES += \
37     QtSystemTrayIcon.qrc

 1 #include "mainwindow.h"
 2 
 3 #include <QApplication>
 4 
 5 int main(int argc, char *argv[])
 6 {
 7     QApplication a(argc, argv);
 8     MainWindow w;
 9     w.show();
10     return a.exec();
11 }

 1 #ifndef MAINWINDOW_H
 2 #define MAINWINDOW_H
 3 
 4 #include <Windows.h>
 5 
 6 #include <QMainWindow>
 7 #include <QSystemTrayIcon>
 8 #include <QMenu>
 9 #include <QAction>
10 #include <QDebug>
11 
12 QT_BEGIN_NAMESPACE
13 namespace Ui { class MainWindow; }
14 QT_END_NAMESPACE
15 
16 class MainWindow : public QMainWindow
17 {
18     Q_OBJECT
19 
20 public:
21     MainWindow(QWidget *parent = nullptr);
22     ~MainWindow();
23 
24     virtual void changeEvent(QEvent *event);
25 private:
26     void activeTray(QSystemTrayIcon::ActivationReason reason);
27 
28     void showWindow();//显示窗体
29     void showMessage();//消息框
30     void showMenu();//显示菜单
31 private:
32     Ui::MainWindow *ui;
33 
34     QSystemTrayIcon *m_systemTray;
35     QMenu *m_menu;
36     QAction *m_action1;
37     QAction *m_action2;
38 };
39 #endif // MAINWINDOW_H

 1 #include "mainwindow.h"
 2 #include "ui_mainwindow.h"
 3 
 4 MainWindow::MainWindow(QWidget *parent)
 5     : QMainWindow(parent)
 6     , ui(new Ui::MainWindow)
 7 {
 8     ui->setupUi(this);    
 9     // 菜单的建立
10     m_menu = new QMenu(this);
11     m_action1 = new QAction(m_menu);
12     m_action2 = new QAction(m_menu);
13     m_action1->setText("Show Window");
14     m_action2->setText("Show Message");
15     m_menu->addAction(m_action1);
16     m_menu->addAction(m_action2);
17     connect(m_action1, &QAction::triggered, this, &MainWindow::showWindow);
18     connect(m_action2, &QAction::triggered, this, &MainWindow::showMessage);
19     // 托盘的建立
20     m_systemTray = new QSystemTrayIcon(this);
21     m_systemTray->setContextMenu(m_menu);
22     m_systemTray->setIcon(QIcon(":/new/prefix1/ico.png"));
23     m_systemTray->setToolTip("SystemTray Program");
24     m_systemTray->show();
25     connect(m_systemTray, &QSystemTrayIcon::activated, this, &MainWindow::activeTray);//点击托盘，执行相应的动作
26     connect(m_systemTray, &QSystemTrayIcon::messageClicked, this, &MainWindow::showWindow);//点击消息框，显示主窗口
27 }
28 
29 MainWindow::~MainWindow()
30 {
31     delete ui;
32 }
33 
34 void MainWindow::changeEvent(QEvent *event)
35 {
36     if(event->type() == QEvent::WindowStateChange)
37     {
38         if(windowState() & Qt::WindowMinimized)
39         {
40             hide();
41         }
42     }
43     QWidget::changeEvent(event);
44 }
45 
46 void MainWindow::activeTray(QSystemTrayIcon::ActivationReason reason)
47 {
48     qDebug() << "activeTray:" << reason;
49     switch (reason)
50     {
51     case QSystemTrayIcon::Context:
52         showMenu();
53         break;
54 //    case QSystemTrayIcon::DoubleClick:
55 //        showMessage();
56 //        break;
57     case QSystemTrayIcon::Trigger:
58         showWindow();
59         break;
60     }
61 }
62 
63 void MainWindow::showWindow()
64 {
65     Qt::WindowStates wins;
66     if (windowState() & Qt::WindowMaximized)
67     {
68         wins = Qt::WindowMaximized;
69     }
70     setWindowState(Qt::WindowActive | wins);
71     this->show();
72 }
73 
74 void MainWindow::showMessage()
75 {
76     m_systemTray->showMessage("Information",//消息窗口标题
77     "There is a new message!",//消息内容
78     QSystemTrayIcon::MessageIcon::Information,//消息窗口图标
79     5000);//消息窗口显示时长
80 }
81 
82 void MainWindow::showMenu()
83 {
84     m_menu->show();
85 }

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <ui version="4.0">
 3  <class>MainWindow</class>
 4  <widget class="QMainWindow" name="MainWindow">
 5   <property name="geometry">
 6    <rect>
 7     <x>0</x>
 8     <y>0</y>
 9     <width>458</width>
10     <height>132</height>
11    </rect>
12   </property>
13   <property name="windowTitle">
14    <string>MainWindow</string>
15   </property>
16   <widget class="QWidget" name="centralwidget"/>
17   <widget class="QMenuBar" name="menubar">
18    <property name="geometry">
19     <rect>
20      <x>0</x>
21      <y>0</y>
22      <width>458</width>
23      <height>23</height>
24     </rect>
25    </property>
26   </widget>
27   <widget class="QStatusBar" name="statusbar"/>
28  </widget>
29  <resources/>
30  <connections/>
31 </ui>