GUI设计一个秒表计时器

好的，以下是一个简单的秒表计时器的GUI设计，使用Python的tkinter模块实现：

import tkinter as tk

class Stopwatch:
    def __init__(self, master):
        self.master = master
        master.title("秒表计时器")

        # 创建和放置组件
        self.time_label = tk.Label(master, text="00:00:00", font=("Arial", 80))
        self.time_label.pack()

        self.start_button = tk.Button(master, text="开始", command=self.start)
        self.start_button.pack(side="left", padx=10)

        self.stop_button = tk.Button(master, text="停止", command=self.stop)
        self.stop_button.pack(side="left", padx=10)

        self.reset_button = tk.Button(master, text="重置", command=self.reset)
        self.reset_button.pack(side="left", padx=10)

        # 初始化变量
        self.running = False
        self.elapsed_time = 0
        self.start_time = 0
        self.update_time()

    def update_time(self):
        """更新时间标签，每100毫秒调用一次"""
        if self.running:
            elapsed_time = int((tk.Event().time - self.start_time) / 100)
            if elapsed_time != self.elapsed_time:
                self.elapsed_time = elapsed_time
                minutes, seconds = divmod(elapsed_time, 600)
                seconds, hundredths = divmod(seconds, 10)
                self.time_label.config(text=f"{minutes:02d}:{seconds:02d}:{hundredths:02d}")
        self.time_label.after(100, self.update_time)

    def start(self):
        """开始计时"""
        self.running = True
        self.start_time = tk.Event().time

    def stop(self):
        """停止计时"""
        self.running = False

    def reset(self):
        """重置计时器"""
        self.running = False
        self.elapsed_time = 0
        self.time_label.config(text="00:00:00")

root = tk.Tk()
stopwatch = Stopwatch(root)
root.mainloop()

运行这个程序，就可以看到一个简单的秒表计时器GUI界面，包括一个时间标签和三个按钮（开始、停止、重置），点击按钮即可开始、停止、重置计时器。