选中 Minimize to Tray， 在关闭窗口时最小化到系统托盘

QSystemTrayIcon/MinimizeToTray.py

@@ -0,0 +1,85 @@
+import sys
+
+from PyQt5.QtWidgets import (
+    QApplication, QMainWindow,
+    QLabel, QGridLayout, QWidget,
+    QCheckBox, QSystemTrayIcon,
+    QSpacerItem, QSizePolicy, QMenu, QAction, QStyle, qApp)
+from PyQt5.QtCore import QSize
+
+
+class MainWindow(QMainWindow):
+    """
+         Сheckbox and system tray icons.
+         Will initialize in the constructor.
+    """
+    check_box = None
+    tray_icon = None
+
+    # Override the class constructor
+    def __init__(self):
+        # Be sure to call the super class method
+        QMainWindow.__init__(self)
+
+        self.setMinimumSize(QSize(480, 80))             # Set sizes
+        self.setWindowTitle("System Tray Application")  # Set a title
+        # Create a central widget
+        central_widget = QWidget(self)
+        # Set the central widget
+        self.setCentralWidget(central_widget)
+
+        grid_layout = QGridLayout(self)         # Create a QGridLayout
+        # Set the layout into the central widget
+        central_widget.setLayout(grid_layout)
+        grid_layout.addWidget(
+            QLabel("Application, which can minimize to Tray", self), 0, 0)
+
+        # Add a checkbox, which will depend on the behavior of the program when the window is closed
+        self.check_box = QCheckBox('Minimize to Tray')
+        grid_layout.addWidget(self.check_box, 1, 0)
+        grid_layout.addItem(QSpacerItem(
+            0, 0, QSizePolicy.Expanding, QSizePolicy.Expanding), 2, 0)
+
+        # Init QSystemTrayIcon
+        self.tray_icon = QSystemTrayIcon(self)
+        self.tray_icon.setIcon(
+            self.style().standardIcon(QStyle.SP_ComputerIcon))
+
+        '''
+            Define and add steps to work with the system tray icon
+            show - show window
+            hide - hide window
+            exit - exit from application
+        '''
+        show_action = QAction("Show", self)
+        quit_action = QAction("Exit", self)
+        hide_action = QAction("Hide", self)
+        show_action.triggered.connect(self.show)
+        hide_action.triggered.connect(self.hide)
+        quit_action.triggered.connect(qApp.quit)
+        tray_menu = QMenu()
+        tray_menu.addAction(show_action)
+        tray_menu.addAction(hide_action)
+        tray_menu.addAction(quit_action)
+        self.tray_icon.setContextMenu(tray_menu)
+        self.tray_icon.show()
+
+    # Override closeEvent, to intercept the window closing event
+    # The window will be closed only if there is no check mark in the check box
+    def closeEvent(self, event):
+        if self.check_box.isChecked():
+            event.ignore()
+            self.hide()
+            self.tray_icon.showMessage(
+                "Tray Program",
+                "Application was minimized to Tray",
+                QSystemTrayIcon.Information,
+                2000
+            )
+
+
+if __name__ == "__main__":
+    app = QApplication(sys.argv)
+    mw = MainWindow()
+    mw.show()
+    sys.exit(app.exec())

QSystemTrayIcon/README.md

@@ -0,0 +1,21 @@
+# QSystemTrayIcon
+
+- 目录
+  - [最小化到系统托盘](#1、最小化到系统托盘)
+
+
+
+## 1、最小化到系统托盘
+
+[运行 MinimizeToTray.py](MinimizeToTray.py)
+
+选择 Minimize to Tray 在关闭窗口时最小化到系统托盘。
+
+> Reference:
+>
+> [PyQt5 - Lesson 003. QSystemTrayIcon - How to minimize application to tray]: https://evileg.com/en/post/68/
+
+![MinimizeToTray](ScreenShot/MinimizeToTray.gif)
+
+
+