Question

此代码打开一个按钮，该按钮链接到另一个按钮。另一个按钮可以关闭它自己，但是第一个按钮不能自动关闭并同时打开一个新按钮，我该如何解决这个问题？

import tkinter as tk

class Demo1:
    def __init__(self, master):
        self.master = master
        self.frame = tk.Frame(self.master)
        self.HelloButton = tk.Button(self.frame, text = 'Hello', width = 25, command = self.new_window,)
        self.HelloButton.pack()
        self.frame.pack()
    def close_windows(self):
        self.master.destroy()
        self.new_window
    def new_window(self):
        self.new_window = tk.Toplevel(self.master)
        self.app = Demo2(self.new_window)


class Demo2:
    def __init__(self, master):
        self.master = master
        self.frame = tk.Frame(self.master)
        self.quitButton = tk.Button(self.frame, text = 'Quit', width = 25, command = self.close_windows)
        self.quitButton.pack()
        self.frame.pack()
    def close_windows(self):
        self.master.destroy()

def main(): 
    root = tk.Tk()
    app = Demo1(root)
    root.mainloop()

if __name__ == '__main__':
    main()

Answer 1

尝试重新定义Demo1.new_window()，如下所示：

def new_window(self):
    self.master.destroy() # close the current window
    self.master = tk.Tk() # create another Tk instance
    self.app = Demo2(self.master) # create Demo2 window
    self.master.mainloop()

Answer 2

试试这个：

import tkinter as tk

class windowclass():
    def __init__(self, master):
        self.master = master
        self.btn = tk.Button(master, text="Button", command=self.command)
        self.btn.pack()

    def command(self):
        self.master.withdraw()
        toplevel = tk.Toplevel(self.master)
        toplevel.geometry("350x350")
        app = Demo2(toplevel)

class Demo2:
    def __init__(self, master):
        self.master = master
        self.frame = tk.Frame(self.master)
        self.quitButton = tk.Button(self.frame, text = 'Quit', width = 25, command = self.close_windows)
        self.quitButton.pack()
        self.frame.pack()
    def close_windows(self):
        self.master.destroy()

root = tk.Tk()
root.title("window")
root.geometry("350x350")
cls = windowclass(root)
root.mainloop()

或者有时候，你想做别的事情，你可以隐藏它。

def __init__(self, parent):
    self.root = parent
    self.root.title("Main")
    self.frame = Tk.Frame(parent)
    self.frame.pack()
    btn = Tk.Button(self.frame, text="New", command=self.openFrame)
    btn.pack()

def hide(self):
    self.root.withdraw()

def openFrame(self):
    self.hide()
    otherFrame = Tk.Toplevel()
    otherFrame.geometry("400x300")
    handler = lambda: self.CloseOtherFrame(otherFrame)
    btn = Tk.Button(otherFrame, text="Close", command=handler)
    btn.pack()


def CloseOtherFrame(self, otherFrame):
    otherFrame.destroy()
    self.show()

如何关闭当前窗口并同时打开一个新窗口？

2 个答案: