使用tkinter无法看到python上的菜单按钮

我无法获得mButton1以显示一个菜单，显示Orlando及其下方的Cancun。我正在尝试构建一个窗口小部件按钮，点击时它会在菜单中显示2个城市，例如预订航班时。使用tkinter无法看到python上的菜单按钮

from tkinter import * 

class App: 
    def __init__(self, master): 

     frame = Frame(master) 
     frame.grid() 

     self.label1 = Label(frame, text = "Destination:") 
     self.label2 = Label(frame, text = "Adults:") 
     self.label3 = Label(frame, text = "Child:") 
     self.label1.grid(row=0) 
     self.label2.grid(row=1) 
     self.label3.grid(row=2) 

     self.entry2 = Entry(frame) 
     self.entry3 = Entry(frame) 
     self.entry2.grid(row=1,column = 1) 
     self.entry3.grid(row=2,column = 1) 

     self.button = Checkbutton(frame, text="Roundtrip:") 
     self.button.grid(row=3) 

     **self.mButton1 = Menubutton(frame, text = "Destinations", relief=RAISED) 
     self.mButton1.grid(row = 0, column = 1) 
     self.mButton1.menu = Menu(frame, tearoff = 0) 
     self.mButton1["menu"] =self.mButton1.menu 
     self.orlandoVar = IntVar() 
     self.cancunVar = IntVar() 
     self.mButton1.menu.add_checkbutton (label= "Orlando", variable = self.orlandoVar) 
     self.mButton1.menu.add_checkbutton (label = "Cancun", variable = self.cancunVar) 
     self.mButton1.grid** 

root = Tk()

来源

2016-03-08 Yeshua Torreblanca

“__init__”是在它自己的行缩进得当，（并且对每边，你可能有两个下划线，但它显示为大胆，因为它没有格式化为代码）http://www.diveintopython.net/object_oriented_framework/defining_classes.html#d0e11720 –

的菜单必须是菜单按钮的子

self.mButton1.menu = Menu(self.mButton1, ...)

来源

2016-03-08 22:24:00

是的！我刚刚发现太过分了。尽管如此，非常感谢！ –

使用tkinter无法看到python上的菜单按钮

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