python TKinter Popup Menu Instance Method

1. Pop-up menus are also called context menus. Create menus and add various functions to menus.

2. Right-click to monitor the mouse. If right-click, it will pop up according to the position judgment.

3. Call the Menupop method.

4. add_separator Add a delimiter.

Instances

#  Pop-up menu case 
 
import tkinter
 
def makeLabel():
    global baseFrame
    tkinter.Label(baseFrame, text="PHP Is the best programming language, and I use Python").pack()
    
baseFrame = tkinter.Tk()
 
menubar = tkinter.Menu(baseFrame)
for x in [' Spicy mushroom ', ' Steam pot chicken ', ' Dongpo's elbow ']:
    menubar.add_separator()
    menubar.add_command(label=x)
    
menubar.add_command(label=" Chongqing hot pot ", command=makeLabel)
 
#  Event handler 1 There must be at least one 1 Parameters, and the first 1 Parameters represent system events 
def pop(event):
    #  Pay attention to the use  event.x  And  event.x_root  Difference between 
    # menubar.post(event.x, event.y)
    menubar.post(event.x_root,  event.y_root)
    
baseFrame.bind("<Button-3>", pop)
 
baseFrame.mainloop()

Instance extension:

from tkinter import *
def sys_callbak():
      pass
def fun_callbak():
      pass
def no_thing(event):
      popmenu.post(event.x_root,event.y_root)
master = Tk()
master.title(' Automatic news crawling ')
menubar = Menu(master)
sysmenu = Menu(menubar,tearoff=False)
sysmenu.add_command(label=' Add ',command=sys_callbak)
sysmenu.add_command(label=' Modify ',command=sys_callbak)
sysmenu.add_separator()
sysmenu.add_command(label=' Quit ',command=sys_callbak)
menubar.add_cascade(label=' System ',menu=sysmenu)
funmenu = Menu(menubar)
funmenu.add_command(label=' Add ',command=fun_callbak)
funmenu.add_command(label=' Modify ',command=fun_callbak)
menubar.add_cascade(label=' Function ',menu=funmenu)

popmenu = Menu(master)
popmenu.add_command(label=' Not set ',command=no_thing)
popmenu.add_command(label=' The Beauty of Thinking ',command=no_thing)
frame = Frame(master,width=312,height=512)
frame.bind('<Button-3>',no_thing)
frame.grid()
master.grid()
master.config(menu=menubar)
mainloop()