基本弹出式菜单示例代码

import tkinter as tk

def show_menu(event):
    # 在鼠标位置显示弹出菜单
    popup_menu.tk_popup(event.x_root, event.y_root)

root = tk.Tk()
root.title("弹出式菜单示例")
root.geometry("400x300")

# 创建一个弹出菜单
popup_menu = tk.Menu(root, tearoff=0)
popup_menu.add_command(label="复制")
popup_menu.add_command(label="粘贴")
popup_menu.add_separator()
popup_menu.add_command(label="剪切")
popup_menu.add_command(label="全选")

# 绑定右键事件
root.bind("<Button-3>", show_menu)

# 添加一个文本标签用于演示
label = tk.Label(root, text="右键点击任意位置显示菜单", 
                font=("Arial", 14), pady=100)
label.pack()

root.mainloop()

代码解析

• tearoff=0 - 禁用菜单的可分离特性
• add_command() - 添加菜单项
• add_separator() - 添加分隔线
• bind("<Button-3>", show_menu) - 绑定右键点击事件
• tk_popup(x, y) - 在指定坐标显示菜单

完整示例：带功能的文本编辑器菜单

import tkinter as tk
from tkinter import messagebox

def show_context_menu(event):
    context_menu.delete(0, tk.END)  # 清除旧菜单项
    
    # 添加通用选项
    context_menu.add_command(label="复制", command=copy_text)
    context_menu.add_command(label="粘贴", command=paste_text)
    
    # 添加特定于文本的选项
    if event.widget == text_area:
        context_menu.add_separator()
        context_menu.add_command(label="清除所有", command=clear_text)
        context_menu.add_command(label="统计字数", command=count_words)
    
    context_menu.tk_popup(event.x_root, event.y_root)

def copy_text():
    text_area.event_generate("<<Copy>>")

def paste_text():
    text_area.event_generate("<<Paste>>")

def clear_text():
    text_area.delete(1.0, tk.END)

def count_words():
    content = text_area.get(1.0, tk.END)
    words = len(content.split())
    messagebox.showinfo("字数统计", f"当前字数: {words}")

root = tk.Tk()
root.title("高级弹出菜单示例")
root.geometry("500x400")

# 创建文本区域
text_area = tk.Text(root, wrap="word", font=("Arial", 12))
text_area.pack(fill="both", expand=True, padx=10, pady=10)
text_area.insert("1.0", "在此输入文本...")

# 创建上下文菜单
context_menu = tk.Menu(root, tearoff=0)

# 绑定右键事件
root.bind("<Button-3>", show_context_menu)
text_area.bind("<Button-3>", show_context_menu)

root.mainloop()