我正在尝试制作两个不同的屏幕，并使用每个屏幕上的按钮将它们相互链接，这些按钮为它们分配了受人尊敬的功能作为命令。
请帮助我知道为什么我收到以下错误：
错误的窗口路径名".！框架">
当我按下以下代码中的按钮时。
from tkinter import *
root = Tk()
my_height = 600
my_width = 350
root.geometry(f"{my_height}x{my_width}")
# root.maxsize(my_height, my_width)
# FRAMES
main_frame = Frame(root, bg="Red", borderwidth=30)
other_frame = Frame(root, bg="Yellow", borderwidth=30)
# first window
def main_screen():
other_frame.destroy()
Label(main_frame, text="First Window").pack()
Button(main_frame, text="GO", command=second_screen).pack()
main_frame.pack()
def second_screen():
main_frame.destroy()
Label(other_frame, text="Second Window").pack()
Button(other_frame, text="BACK", command=main_screen).pack()
other_frame.pack()
main_screen()
root.mainloop()
你在main_screen做的第一件事就是摧毁other_frame。当您调用second_screen时，它会尝试使用该框架作为新小部件的父帧，但它已被销毁。这就是为什么你会得到错误bad window path name ".!frame"- 它很糟糕，因为它已被破坏并且不能再使用。
一个简单的解决方案是简单地不调用other_frame.destroy()。相反，您可以使用other_frame.pack_forget()将其从视图中删除。
重要的是要知道，pack的工作原理是将对象放置在可用空间中，并按照调用pack的顺序。如果在应用程序启动后删除并添加微件，则可能会影响微件的显示顺序。
在这种特定情况下，由于main_screen和other_screen是唯一直接在root中的小部件，因此没关系，并且不会影响您获得错误的原因。
问题是您在编写other_frame.destroy()时删除了之前other_frame的帧。这使得程序的其余部分无法访问它，因为您销毁了它。
因此，将有两种解决方案：一种是，正如BryanOakley提到的，使用.pack()。另一种是使用.place()。
.pack()代码：
from tkinter import *
root = Tk()
my_height = 600
my_width = 350
root.geometry(f"{my_height}x{my_width}")
# root.maxsize(my_height, my_width)
def main_screen():
other_frame.pack_forget()
main_frame.pack()
def second_screen():
main_frame.pack_forget()
other_frame.pack()
# FRAMES
main_frame = Frame(root, bg="Red", borderwidth=30)
other_frame = Frame(root, bg="Yellow", borderwidth=30)
Label(other_frame, text="Second Window").pack()
Button(other_frame, text="BACK", command=main_screen).pack()
Label(main_frame, text="First Window").pack()
Button(main_frame, text="GO", command=second_screen).pack()
# first window
main_screen()
root.mainloop()
.place()代码：
from tkinter import *
root = Tk()
my_height = 600
my_width = 350
root.geometry(f"{my_height}x{my_width}")
# root.maxsize(my_height, my_width)
# first window
def main_screen():
main_frame.place(relx = 0.5, rely = 0.1, anchor = "center")
other_frame.place(relx = 1.5, rely = 0.1, anchor = "center")
main_frame.update()
other_frame.update()
def second_screen():
main_frame.place(relx = -0.5, rely = 0.1, anchor = "center")
main_frame.update()
other_frame.place(relx = 0.5, rely = 0.1, anchor = "center")
other_frame.update()
# FRAMES
main_frame = Frame(root, bg="Red", borderwidth=30)
other_frame = Frame(root, bg="Yellow", borderwidth=30)
main_frame.place(relx = 0.5, rely = 0.1, anchor = "center")
other_frame.place(relx = 1.5, rely = 0.1, anchor = "center")
Label(main_frame, text="First Window").pack()
Button(main_frame, text="GO", command=second_screen).pack()
Label(other_frame, text="Second Window").pack()
Button(other_frame, text="BACK", command=main_screen).pack()
main_screen()
root.mainloop()
使用.place()的优点是您可以使用 for 循环来回对帧进行动画处理。
这是代码：
from tkinter import *
root = Tk()
my_height = 600
my_width = 350
root.geometry(f"{my_height}x{my_width}")
# root.maxsize(my_height, my_width)
# first window
def main_screen():
global x1, y1, x2, y2
for i in range(1000):
x1 += 0.001
x2 += 0.001
main_frame.place(relx = x1, rely = y1, anchor = "center")
other_frame.place(relx = x2, rely = y2, anchor = "center")
main_frame.update()
other_frame.update()
def second_screen():
global x1, y1, x2, y2
for i in range(1000):
x1 -= 0.001
x2 -= 0.001
main_frame.place(relx = x1, rely = y1, anchor = "center")
other_frame.place(relx = x2, rely = y2, anchor = "center")
main_frame.update()
other_frame.update()
# FRAMES
x1, y1 = 0.5, 0.1
x2, y2 = 1.5, y1
main_frame = Frame(root, bg="Red", borderwidth=30)
other_frame = Frame(root, bg="Yellow", borderwidth=30)
main_frame.place(relx = 0.5, rely = 0.1, anchor = "center")
other_frame.place(relx = 1.5, rely = 0.1, anchor = "center")
Label(main_frame, text="First Window").pack()
Button(main_frame, text="GO", command=second_screen).pack()
Label(other_frame, text="Second Window").pack()
Button(other_frame, text="BACK", command=main_screen).pack()
root.mainloop()
希望这有帮助！