python3 tkinter 的那些坑

在Mac和Windows不同的系統下有些坑

1. filedailog，colorchooser

如下代碼在Mac下報錯：NameError: name 'filedialog' is not defined

#在Windows下，
from tkinter import *


root = Tk()

def callback():
  fileName = filedialog.askopenfilename()  
  print(fileName)


Button(root,text="openFile",command=callback).pack()


root.mainloop()

增加引用 tkinter.filedialog才能運行

 

#在Mac下
from tkinter import *
import tkinter.filedialog

root = Tk()

def callback():
  fileName = tkinter.filedialog.askopenfilename()  
  print(fileName)


Button(root,text="openFile",command=callback).pack()


root.mainloop()

2.menu（在Mac下需要兩層才能達到效果）

#Windows
from tkinter import *

root = Tk()

def callback():
  print('hello')



mb = Menubutton(root,text="click me", relief=RAISED)
mb.pack()


filemenu = Menu(mb,tearoff=False)
filemenu.add_command(label="Open", command=callback)
filemenu.add_command(label="Save", command=callback)

filemenu.add_separator()
filemenu.add_command(label="Quit", command=root.quit)


mb.config(menu=filemenu)
mainloop()

#Mac
import tkinter as tk
from tkinter import messagebox
root = tk.Tk()
root.title('aa')
root.geometry('500x200')



def hello():
    messagebox.showinfo("information", "Information")

# it cannot open menu
menubar1 = tk.Menu(root)
menubar = tk.Menu(menubar1, tearoff=0)

menubar1.add_cascade(label='File', menu=menubar)
menubar.add_command(label="Hello",command=hello)
menubar.add_command(label="Quit",command=root.quit)
root.config(menu=menubar1)
root.mainloop()