消息框不工作
Messagebox not working
我的消息框代码无法在我的 window 上运行。其他一切正常，但是当我 运行 它时，我的 "About" 消息框不会出现。我希望在 window 上单击 "About" 时弹出消息框。我该怎么做才能让它发挥作用？
from tkinter import *
from tkinter import messagebox
calculator = Tk()
calculator.title("Calculator")
calculator.geometry("317x145")
menubar = Menu(calculator)
class Calculator(Frame):
def __init__(self):
Frame.__init__(self)
display = Frame(calculator, bd=0, width=1000, height=1000, relief=SUNKEN)
buttons = Frame(calculator, bd=0, width=7, height=1, relief=GROOVE)
display.grid(column=0, row=0, padx=0, pady=0)
buttons.grid(column=0, row=1, padx=1)
numbers = StringVar()
self.results = Entry(display, textvariable=numbers, width=31, fg="DarkOrchid4", bg="lavender blush", font="Verdana")
self.results.pack()
self.results.grid(column=0, row=0)
def showup(x):
return lambda: self.results.insert(END, x)
numbers=["7", "4", "1", "8", "5", "2", "9", "6", "3"]
for i in range(9):
n=numbers[i]
Button(buttons, bg="snow", text=n, width=7, height=1, command=showup(n), relief=RAISED).grid(row=i%3, column=i//3)
Clear = Button(buttons, bg="snow", text="C", width=7, height=1, command=self.clear, relief=RAISED)
Clear.grid(padx=2, pady=2, column=3, row=0)
Equals = Button(buttons, bg="snow", text="=", width=7, height=1, command=self.equals, relief=RAISED)
Equals.grid(padx=2, pady=2, column=4, row=3)
All_clear = Button(buttons, bg="snow", text="AC", width=7, height=1, command=self.all_clear, relief=RAISED)
All_clear.grid(padx=2, pady=2, column=4, row=0)
Bracket_one = Button(buttons, bg="snow", text="(", width=7, height=1, command=self.bracket_one, relief=RAISED)
Bracket_one.grid(padx=2, pady=2, column=2, row=3)
Bracket_two = Button(buttons, bg="snow", text=")", width=7, height=1, command=self.bracket_two, relief=RAISED)
Bracket_two.grid(padx=2, pady=2, column=3, row=3)
Zero = Button(buttons, bg="snow", text="0", width=7, height=1, command=self.zero, relief=RAISED)
Zero.grid(padx=2, pady=2, column=0, row=3)
Decimal_point = Button(buttons, bg="snow", text=".", width=7, height=1, command=self.decimal_point, relief=RAISED)
Decimal_point.grid(padx=2, pady=2, column=1, row=3)
Multiplication = Button(buttons, bg="red", text="x", width=7, height=1, command=self.multiplication, relief=RAISED)
Multiplication.grid(padx=2, pady=2, column=3, row=1)
Division = Button(buttons, bg="powder blue", text="/", width=7, height=1, command=self.division, relief=RAISED)
Division.grid(padx=2, pady=2, column=4, row=1)
Addition = Button(buttons, bg="yellow", text="+", width=7, height=1, command=self.addition, relief=RAISED)
Addition.grid(padx=2, pady=2, column=3, row=2)
Subtraction = Button(buttons, bg="green", text="-", width=7, height=1, command=self.subtraction, relief=RAISED)
Subtraction.grid(padx=2, pady=2, column=4, row=2)
def equals(self):
try:
result = eval(self.results.get())
except:
result = "Invalid input"
self.all_clear()
self.results.insert(0, result)
def zero(self):
self.results.insert(END, "0")
def bracket_one(self):
self.results.insert(END, "(")
def bracket_two(self):
self.results.insert(END, ")")
def all_clear(self):
self.results.delete(0, END)
def clear(self):
self.results.delete(-1)
def multiplication(self):
self.results.insert(END, "*")
def division(self):
self.results.insert(END, "/")
def addition(self):
self.results.insert(END, "+")
def subtraction(self):
self.results.insert(END, "-")
def decimal_point(self):
self.results.insert(END, ".")
def about():
messagebox.showinfo(title = "About", message = "Author")
return
helpMenu = Menu(menubar)
menubar.add_command(label = "About", command=about)
if __name__ == '__main__':
Calculator().mainloop()
calculator.config(menu=menubar)
calculator.mainloop()
您的问题是您没有将 menubar 与您的根应用程序相关联。这就是为什么它永远不会出现的原因。您需要将应用程序的 menu 配置为您创建的 menubar。示例 -
calculator.configure(menu=menubar)
此外，最好将该代码也移到您的框架内。示例 -
from tkinter import *
from tkinter import messagebox
calculator = Tk()
calculator.title("Calculator")
calculator.geometry("317x145")
menubar = Menu(calculator)
class Calculator(Frame):
def __init__(self):
Frame.__init__(self)
display = Frame(calculator, bd=0, width=1000, height=1000, relief=SUNKEN)
buttons = Frame(calculator, bd=0, width=7, height=1, relief=GROOVE)
display.grid(column=0, row=0, padx=0, pady=0)
buttons.grid(column=0, row=1, padx=1)
numbers = StringVar()
self.results = Entry(display, textvariable=numbers, width=31, fg="DarkOrchid4", bg="lavender blush", font="Verdana")
self.results.pack()
self.results.grid(column=0, row=0)
def showup(x):
return lambda: self.results.insert(END, x)
numbers=["7", "4", "1", "8", "5", "2", "9", "6", "3"]
for i in range(9):
n=numbers[i]
Button(buttons, bg="snow", text=n, width=7, height=1, command=showup(n), relief=RAISED).grid(row=i%3, column=i//3)
Clear = Button(buttons, bg="snow", text="C", width=7, height=1, command=self.clear, relief=RAISED)
Clear.grid(padx=2, pady=2, column=3, row=0)
Equals = Button(buttons, bg="snow", text="=", width=7, height=1, command=self.equals, relief=RAISED)
Equals.grid(padx=2, pady=2, column=4, row=3)
All_clear = Button(buttons, bg="snow", text="AC", width=7, height=1, command=self.all_clear, relief=RAISED)
All_clear.grid(padx=2, pady=2, column=4, row=0)
Bracket_one = Button(buttons, bg="snow", text="(", width=7, height=1, command=self.bracket_one, relief=RAISED)
Bracket_one.grid(padx=2, pady=2, column=2, row=3)
Bracket_two = Button(buttons, bg="snow", text=")", width=7, height=1, command=self.bracket_two, relief=RAISED)
Bracket_two.grid(padx=2, pady=2, column=3, row=3)
Zero = Button(buttons, bg="snow", text="0", width=7, height=1, command=self.zero, relief=RAISED)
Zero.grid(padx=2, pady=2, column=0, row=3)
Decimal_point = Button(buttons, bg="snow", text=".", width=7, height=1, command=self.decimal_point, relief=RAISED)
Decimal_point.grid(padx=2, pady=2, column=1, row=3)
Multiplication = Button(buttons, bg="red", text="x", width=7, height=1, command=self.multiplication, relief=RAISED)
Multiplication.grid(padx=2, pady=2, column=3, row=1)
Division = Button(buttons, bg="powder blue", text="/", width=7, height=1, command=self.division, relief=RAISED)
Division.grid(padx=2, pady=2, column=4, row=1)
Addition = Button(buttons, bg="yellow", text="+", width=7, height=1, command=self.addition, relief=RAISED)
Addition.grid(padx=2, pady=2, column=3, row=2)
Subtraction = Button(buttons, bg="green", text="-", width=7, height=1, command=self.subtraction, relief=RAISED)
Subtraction.grid(padx=2, pady=2, column=4, row=2)
self.menubar = Menu(self)
def about():
messagebox.showinfo(title = "About", message = "Author")
return
self.helpMenu = Menu(self.menubar)
self.menubar.add_cascade(label="Help",menu=self.helpMenu)
self.helpMenu.add_command(label = "About", command=about)
calculator.config(menu=self.menubar)
def equals(self):
try:
result = eval(self.results.get())
except:
result = "Invalid input"
self.all_clear()
self.results.insert(0, result)
def zero(self):
self.results.insert(END, "0")
def bracket_one(self):
self.results.insert(END, "(")
def bracket_two(self):
self.results.insert(END, ")")
def all_clear(self):
self.results.delete(0, END)
def clear(self):
self.results.delete(-1)
def multiplication(self):
self.results.insert(END, "*")
def division(self):
self.results.insert(END, "/")
def addition(self):
self.results.insert(END, "+")
def subtraction(self):
self.results.insert(END, "-")
def decimal_point(self):
self.results.insert(END, ".")
if __name__ == '__main__':
Calculator().mainloop()
calculator.config(menu=menubar)
calculator.mainloop()
我的消息框代码无法在我的 window 上运行。其他一切正常，但是当我 运行 它时，我的 "About" 消息框不会出现。我希望在 window 上单击 "About" 时弹出消息框。我该怎么做才能让它发挥作用？
from tkinter import *
from tkinter import messagebox
calculator = Tk()
calculator.title("Calculator")
calculator.geometry("317x145")
menubar = Menu(calculator)
class Calculator(Frame):
def __init__(self):
Frame.__init__(self)
display = Frame(calculator, bd=0, width=1000, height=1000, relief=SUNKEN)
buttons = Frame(calculator, bd=0, width=7, height=1, relief=GROOVE)
display.grid(column=0, row=0, padx=0, pady=0)
buttons.grid(column=0, row=1, padx=1)
numbers = StringVar()
self.results = Entry(display, textvariable=numbers, width=31, fg="DarkOrchid4", bg="lavender blush", font="Verdana")
self.results.pack()
self.results.grid(column=0, row=0)
def showup(x):
return lambda: self.results.insert(END, x)
numbers=["7", "4", "1", "8", "5", "2", "9", "6", "3"]
for i in range(9):
n=numbers[i]
Button(buttons, bg="snow", text=n, width=7, height=1, command=showup(n), relief=RAISED).grid(row=i%3, column=i//3)
Clear = Button(buttons, bg="snow", text="C", width=7, height=1, command=self.clear, relief=RAISED)
Clear.grid(padx=2, pady=2, column=3, row=0)
Equals = Button(buttons, bg="snow", text="=", width=7, height=1, command=self.equals, relief=RAISED)
Equals.grid(padx=2, pady=2, column=4, row=3)
All_clear = Button(buttons, bg="snow", text="AC", width=7, height=1, command=self.all_clear, relief=RAISED)
All_clear.grid(padx=2, pady=2, column=4, row=0)
Bracket_one = Button(buttons, bg="snow", text="(", width=7, height=1, command=self.bracket_one, relief=RAISED)
Bracket_one.grid(padx=2, pady=2, column=2, row=3)
Bracket_two = Button(buttons, bg="snow", text=")", width=7, height=1, command=self.bracket_two, relief=RAISED)
Bracket_two.grid(padx=2, pady=2, column=3, row=3)
Zero = Button(buttons, bg="snow", text="0", width=7, height=1, command=self.zero, relief=RAISED)
Zero.grid(padx=2, pady=2, column=0, row=3)
Decimal_point = Button(buttons, bg="snow", text=".", width=7, height=1, command=self.decimal_point, relief=RAISED)
Decimal_point.grid(padx=2, pady=2, column=1, row=3)
Multiplication = Button(buttons, bg="red", text="x", width=7, height=1, command=self.multiplication, relief=RAISED)
Multiplication.grid(padx=2, pady=2, column=3, row=1)
Division = Button(buttons, bg="powder blue", text="/", width=7, height=1, command=self.division, relief=RAISED)
Division.grid(padx=2, pady=2, column=4, row=1)
Addition = Button(buttons, bg="yellow", text="+", width=7, height=1, command=self.addition, relief=RAISED)
Addition.grid(padx=2, pady=2, column=3, row=2)
Subtraction = Button(buttons, bg="green", text="-", width=7, height=1, command=self.subtraction, relief=RAISED)
Subtraction.grid(padx=2, pady=2, column=4, row=2)
def equals(self):
try:
result = eval(self.results.get())
except:
result = "Invalid input"
self.all_clear()
self.results.insert(0, result)
def zero(self):
self.results.insert(END, "0")
def bracket_one(self):
self.results.insert(END, "(")
def bracket_two(self):
self.results.insert(END, ")")
def all_clear(self):
self.results.delete(0, END)
def clear(self):
self.results.delete(-1)
def multiplication(self):
self.results.insert(END, "*")
def division(self):
self.results.insert(END, "/")
def addition(self):
self.results.insert(END, "+")
def subtraction(self):
self.results.insert(END, "-")
def decimal_point(self):
self.results.insert(END, ".")
def about():
messagebox.showinfo(title = "About", message = "Author")
return
helpMenu = Menu(menubar)
menubar.add_command(label = "About", command=about)
if __name__ == '__main__':
Calculator().mainloop()
calculator.config(menu=menubar)
calculator.mainloop()
您的问题是您没有将 menubar 与您的根应用程序相关联。这就是为什么它永远不会出现的原因。您需要将应用程序的 menu 配置为您创建的 menubar。示例 -
calculator.configure(menu=menubar)
此外，最好将该代码也移到您的框架内。示例 -
from tkinter import *
from tkinter import messagebox
calculator = Tk()
calculator.title("Calculator")
calculator.geometry("317x145")
menubar = Menu(calculator)
class Calculator(Frame):
def __init__(self):
Frame.__init__(self)
display = Frame(calculator, bd=0, width=1000, height=1000, relief=SUNKEN)
buttons = Frame(calculator, bd=0, width=7, height=1, relief=GROOVE)
display.grid(column=0, row=0, padx=0, pady=0)
buttons.grid(column=0, row=1, padx=1)
numbers = StringVar()
self.results = Entry(display, textvariable=numbers, width=31, fg="DarkOrchid4", bg="lavender blush", font="Verdana")
self.results.pack()
self.results.grid(column=0, row=0)
def showup(x):
return lambda: self.results.insert(END, x)
numbers=["7", "4", "1", "8", "5", "2", "9", "6", "3"]
for i in range(9):
n=numbers[i]
Button(buttons, bg="snow", text=n, width=7, height=1, command=showup(n), relief=RAISED).grid(row=i%3, column=i//3)
Clear = Button(buttons, bg="snow", text="C", width=7, height=1, command=self.clear, relief=RAISED)
Clear.grid(padx=2, pady=2, column=3, row=0)
Equals = Button(buttons, bg="snow", text="=", width=7, height=1, command=self.equals, relief=RAISED)
Equals.grid(padx=2, pady=2, column=4, row=3)
All_clear = Button(buttons, bg="snow", text="AC", width=7, height=1, command=self.all_clear, relief=RAISED)
All_clear.grid(padx=2, pady=2, column=4, row=0)
Bracket_one = Button(buttons, bg="snow", text="(", width=7, height=1, command=self.bracket_one, relief=RAISED)
Bracket_one.grid(padx=2, pady=2, column=2, row=3)
Bracket_two = Button(buttons, bg="snow", text=")", width=7, height=1, command=self.bracket_two, relief=RAISED)
Bracket_two.grid(padx=2, pady=2, column=3, row=3)
Zero = Button(buttons, bg="snow", text="0", width=7, height=1, command=self.zero, relief=RAISED)
Zero.grid(padx=2, pady=2, column=0, row=3)
Decimal_point = Button(buttons, bg="snow", text=".", width=7, height=1, command=self.decimal_point, relief=RAISED)
Decimal_point.grid(padx=2, pady=2, column=1, row=3)
Multiplication = Button(buttons, bg="red", text="x", width=7, height=1, command=self.multiplication, relief=RAISED)
Multiplication.grid(padx=2, pady=2, column=3, row=1)
Division = Button(buttons, bg="powder blue", text="/", width=7, height=1, command=self.division, relief=RAISED)
Division.grid(padx=2, pady=2, column=4, row=1)
Addition = Button(buttons, bg="yellow", text="+", width=7, height=1, command=self.addition, relief=RAISED)
Addition.grid(padx=2, pady=2, column=3, row=2)
Subtraction = Button(buttons, bg="green", text="-", width=7, height=1, command=self.subtraction, relief=RAISED)
Subtraction.grid(padx=2, pady=2, column=4, row=2)
self.menubar = Menu(self)
def about():
messagebox.showinfo(title = "About", message = "Author")
return
self.helpMenu = Menu(self.menubar)
self.menubar.add_cascade(label="Help",menu=self.helpMenu)
self.helpMenu.add_command(label = "About", command=about)
calculator.config(menu=self.menubar)
def equals(self):
try:
result = eval(self.results.get())
except:
result = "Invalid input"
self.all_clear()
self.results.insert(0, result)
def zero(self):
self.results.insert(END, "0")
def bracket_one(self):
self.results.insert(END, "(")
def bracket_two(self):
self.results.insert(END, ")")
def all_clear(self):
self.results.delete(0, END)
def clear(self):
self.results.delete(-1)
def multiplication(self):
self.results.insert(END, "*")
def division(self):
self.results.insert(END, "/")
def addition(self):
self.results.insert(END, "+")
def subtraction(self):
self.results.insert(END, "-")
def decimal_point(self):
self.results.insert(END, ".")
if __name__ == '__main__':
Calculator().mainloop()
calculator.config(menu=menubar)
calculator.mainloop()