无法在 tkinter 中正确关闭 GUI 窗口 [重复]

Question

我正在尝试使用tkinter 在python 中创建一个GUI 用于消息传递。当我想从朋友列表中删除特定的人时，会出现一个新窗口，要求我确认我的决定。问题是，在我选择答案后，它应该关闭那个窗口，但它也会关闭其他所有内容。

from tkinter import *
from tkinter import ttk

def open_win():
    new= Tk()
    new.geometry("750x250")
    new.title("New Window")
   #Create a Label in New window
    Label(new, text="No friends to be seen, moving on", font=('Helvetica 17 bold')).pack(pady=30)

def close_window():
    window.quit()
   # exit()

def open_win_delete():
    new= Tk()
    new.geometry("750x250")
    new.title("New Window")
   #Create a Label in New window
    Label(new, text="Are you sure you want to delete this friend?", font=('Helvetica 17 bold')).grid(row=0,column=2,sticky=NE)
    Button(new, text="Yes",width=6, font="none 12 bold", command=close_window) .grid(row=1,column=2,sticky=NE)    
    Button(new, text="No",width=6, font="none 12 bold", command=close_window) .grid(row=1,column=3,sticky=NE)


def open_win_block():
    new= Tk()
    new.geometry("750x250")
    new.title("New Window")
   #Create a Label in New window
    Label(new, text="Are you sure you want to block this friend?", font=('Helvetica 17 bold')).grid(row=0,column=2,sticky=NE)
    Button(new, text="Yes",width=6, font="none 12 bold", command=close_window) .grid(row=1,column=2,sticky=NE)
    Button(new, text="No",width=6, font="none 12 bold", command=close_window) .grid(row=1,column=3,sticky=NE)


def boxchat():
    window = Tk()

    window.title("Messenger")

    window.configure(background="RoyalBlue4")
    window.geometry("410x500")

    Label(window,text="User:",bg="RoyalBlue4",fg="white",font="none 12 bold") .grid(row=0, column=0,sticky=SW)

    output= Text(window, width=50, height=20,wrap=WORD,background="white")
    output.grid(row=1,column=0,columnspan=3, sticky=N)

    #photo = PhotoImage(file = "D:/SS/Screenshot_1999.png")

    #photoimage = photo.subsample(6, 6)
    Button(window, text="Send",width=4, font="none 12 bold") .grid(row=6,column=1,sticky=E)

    Label(window, text="Input text: ", bg="RoyalBlue4", fg="white",font="none 12 bold") .grid(row=4,column=0,sticky=W)
    Button(window, text="Friends",width=7, font="none 12 bold", command=open_win) .grid(row=0,column=1,sticky=NE) 

    t = Text(window, height=4, width=39)
    t.grid(row=5,column=1,sticky=SW)

    window.mainloop()





window = Tk()
window.title("Friend List")
window.configure(background="RoyalBlue4")
window.geometry("410x250")

#1user
Label(window, text="Bide ", bg="RoyalBlue4", fg="white",font="none 12 bold") .grid(row=0,column=0,sticky=W)
Label(window, text="      ", bg="RoyalBlue4", fg="white",font="none 12 bold") .grid(row=0,column=1,sticky=W)
Button(window, text="Chat",width=4, font="none 12 bold", command=boxchat) .grid(row=0,column=2,sticky=NE)
Button(window, text="Delete",width=6, font="none 12 bold", command=open_win_delete) .grid(row=0,column=3,sticky=NE)
Button(window, text="Block",width=5, font="none 12 bold", command=open_win_block) .grid(row=0,column=4,sticky=NE)

#2user

Label(window, text="Robi ", bg="RoyalBlue4", fg="white",font="none 12 bold") .grid(row=1,column=0,sticky=W)
Label(window, text="      ", bg="RoyalBlue4", fg="white",font="none 12 bold") .grid(row=1,column=1,sticky=W)
Button(window, text="Chat",width=4, font="none 12 bold", command=boxchat) .grid(row=1,column=2,sticky=NE)
Button(window, text="Delete",width=6, font="none 12 bold", command=open_win_delete) .grid(row=1,column=3,sticky=NE)
Button(window, text="Block",width=5, font="none 12 bold", command=open_win_block) .grid(row=1,column=4,sticky=NE)

#3user

Label(window, text="Ibo ", bg="RoyalBlue4", fg="white",font="none 12 bold") .grid(row=2,column=0,sticky=W)
Label(window, text="      ", bg="RoyalBlue4", fg="white",font="none 12 bold") .grid(row=2,column=1,sticky=W)
Button(window, text="Chat",width=4, font="none 12 bold", command=boxchat) .grid(row=2,column=2,sticky=NE)
Button(window, text="Delete",width=6, font="none 12 bold", command=open_win_delete) .grid(row=2,column=3,sticky=NE)
Button(window, text="Block",width=5, font="none 12 bold", command=open_win_block) .grid(row=2,column=4,sticky=NE)
Label(window, text="                         ", bg="RoyalBlue4", fg="white",font="none 12 bold") .grid(row=5,column=5,sticky=W)
Label(window, text="                         ", bg="RoyalBlue4", fg="white",font="none 12 bold") .grid(row=6,column=5,sticky=W)
Label(window, text="                         ", bg="RoyalBlue4", fg="white",font="none 12 bold") .grid(row=7,column=5,sticky=W)
Label(window, text="                         ", bg="RoyalBlue4", fg="white",font="none 12 bold") .grid(row=8,column=5,sticky=W)
Button(window, text="Exit",width=4, font="none 12 bold", command=close_window) .grid(row=9,column=6,sticky=SE)

window.mainloop()

Answer 1

让我们总结一下您犯的两个直接错误。你的按钮处理程序调用close_window，它调用window.quit()。 window 这里是一个全局变量，它指向您的主窗口，因此关闭该窗口会杀死应用程序。您需要关闭调用对话窗口。其次，主窗口上的quit 退出应用程序。您需要destroy 才能简单地关闭窗口。

但是我们无法解决更大的问题。你的对话函数什么都不做。这两个按钮只是关闭对话框窗口，而不保存用户所做的选择，也不返回任何结果。你还有很多代码要写，我们这里没有写。

def close_window(dlg):
    dlg.destroy()

def open_win_delete():
    new= Tk()
    new.geometry("750x250")
    new.title("New Window")
   #Create a Label in New window
    Label(new, text="Are you sure you want to delete this friend?", font=('Helvetica 17 bold')).grid(row=0,column=2,sticky=NE)
    Button(new, text="Yes",width=6, font="none 12 bold", command=lambda: close_window(new)) .grid(row=1,column=2,sticky=NE)    
    Button(new, text="No",width=6, font="none 12 bold", command=lambda: close_window(new)) .grid(row=1,column=3,sticky=NE)


def open_win_block():
    new= Tk()
    new.geometry("750x250")
    new.title("New Window")
   #Create a Label in New window
    Label(new, text="Are you sure you want to block this friend?", font=('Helvetica 17 bold')).grid(row=0,column=2,sticky=NE)
    Button(new, text="Yes",width=6, font="none 12 bold", command=lambda: close_window(new)) .grid(row=1,column=2,sticky=NE)
    Button(new, text="No",width=6, font="none 12 bold", command=lambda: close_window(new)) .grid(row=1,column=3,sticky=NE)