PyQt6 - 通過左鍵單擊 SystemTrayIcon 打開 QWidget

Question

我是 PyQt6 和 python 的新手。 我創建了一個 class SystemTrayIcon ，我試圖打開一個在SystemTrayIcon類之外創建的 QWidget win ，以便在 SystemTrayIcon 被left-clicked時顯示。

我收到此錯誤： "name 'win' is not defined"

我該如何解決這個問題，當左鍵單擊SystemTrayIcon 時，在 class SystemTrayIcon之外創建的win -QWidget 將打開？

from PyQt6.QtWidgets import *
from PyQt6.QtGui import *
import sys
import ui_main


class SystemTrayIcon(QSystemTrayIcon):
    def __init__(self, icon, win, parent=None):
        QSystemTrayIcon.__init__(self, icon, parent)
        self.setToolTip("Test SystemTray")

        menu = QMenu(parent)
        exit_ = menu.addAction("Exit")
        exit_.triggered.connect(lambda: sys.exit())

        self.setContextMenu(menu)
        self.activated.connect(self.trayiconclicked)

    def trayiconclicked(self, reason):
        if reason == self.ActivationReason.Trigger:
            print("SysTrayIcon left clicked")
            win.show() ###### -> ERROR: (<class 'NameError'>, NameError("name 'win' is not defined"), <traceback object at 0x000001B04F5C9580>)


def run():
    app = QApplication(sys.argv)
    app.setQuitOnLastWindowClosed(False)

    win = QWidget()

    tray_icon = SystemTrayIcon(QIcon("images/logo.png"), win)
    tray_icon.setVisible(True)
    tray_icon.show()

    ui = ui_main.Ui_Form()
    ui.setupUi(win, tray_icon.geometry().right(), tray_icon.geometry().bottom(),
               tray_icon.geometry().width(), tray_icon.geometry().height())
    ui.btn_close.clicked.connect(lambda: win.close())

    sys.exit(app.exec())


if __name__ == '__main__':
    run()

Answer 1

它現在應該可以工作了，您需要在調用它之前使win其屬性

class SystemTrayIcon(QSystemTrayIcon):
    def __init__(self, icon, win, parent=None):
        QSystemTrayIcon.__init__(self, icon, parent)
        self.setToolTip("Test SystemTray")
        self.win = win  # <----- name it whatever you want ie self.abc will also work

        menu = QMenu(parent)
        exit_ = menu.addAction("Exit")
        exit_.triggered.connect(lambda: sys.exit())

        self.setContextMenu(menu)
        self.activated.connect(self.trayiconclicked)

    def trayiconclicked(self, reason):
        if reason == self.ActivationReason.Trigger:
            print("SysTrayIcon left clicked")
            self.win.show()  # <--- if you named you attribute self.abc call self.abc here instead of self.win

注意：要使變量成為 class 的屬性，您需要使用 self 定義它，例如，這里我想將年齡作為屬性

class Person:
   def __init__(self, name, age):
      # assigning attributes
      self.age = age
   def some_method(self):
      # here calling self.name will give you error because you didn't assign it as a attribute 
      print(self.name)
   def some_method_1(self):
      # here this will not give error as you have assigned it earlier as a attribute
      print(self.age) 

p = Person("Bob", 16)
p.some_method_1()
p.some_method()