Pystray run_detached模式下启动主循环后托盘图标失效

• 点击Start后托盘图标无响应的核心原因：start回调函数在pystray的事件线程中执行，cl.run()的无限循环直接阻塞了该线程，导致托盘无法处理后续右键点击等交互事件。

将主进程的无限循环放到独立线程中运行，避免占用pystray的事件处理线程。具体修改如下：

1. 导入threading模块创建独立线程
2. 在MyClass中添加线程实例变量，跟踪主进程线程状态
3. 修改start函数，启动独立线程运行主循环，同时避免重复启动
4. 调整退出逻辑，确保线程能优雅终止

from PIL import Image, ImageDraw
import pystray
import time
import threading  # 新增导入线程模块

class MyClass:
    def __init__(self) -> None:
        self.__running = False
        self.__thread = None  # 新增：跟踪主进程线程
        
    def run(self):
        while self.__running:
            time.sleep(1)
            print("running")
                
    def change_running_state(self):
        print(f"Running: {self.__running}")
        self.__running = not self.__running
        print(f"Running: {self.__running}")
        
    def start_thread(self):
        # 避免重复启动线程
        if not self.__thread or not self.__thread.is_alive():
            self.__thread = threading.Thread(target=self.run, daemon=True)
            self.__thread.start()
        

if __name__ == "__main__":

    def create_image(width, height, color1, color2):
        image = Image.new('RGB', (width, height), color1)
        dc = ImageDraw.Draw(image)
        dc.rectangle(
            (width // 2, 0, width, height // 2),
            fill=color2)
        dc.rectangle(
            (0, height // 2, width // 2, height),
            fill=color2)
        return image

    def start():
        print("start")
        cl.change_running_state()
        if cl._MyClass__running:
            cl.start_thread()
        
    def stop():
        print("stop")
        cl.change_running_state()
        
    def exit_program():
        print("exit")
        cl.change_running_state()
        icon.stop()
        # 等待线程结束，确保资源释放
        if cl._MyClass__thread and cl._MyClass__thread.is_alive():
            cl._MyClass__thread.join(timeout=2)
        import os
        os._exit(0)
    

    icon = pystray.Icon(name='Doata2RuneRemainder', icon=create_image(64, 64, 'black', 'white'), menu=pystray.Menu(
        pystray.MenuItem("Start", start),
        pystray.MenuItem("Stop", stop),
        pystray.MenuItem("Exit", exit_program),
    ))
    cl = MyClass()
    icon.run_detached()

• 设置线程为daemon=True，确保主线程退出时子线程自动终止
• 添加线程状态检查，防止重复启动多个主进程实例
• 优化退出逻辑，等待线程结束后再终止程序，避免资源泄漏

内容的提问来源于stack exchange，提问作者fedmag