python - _tkinter.TclError : cannot use geometry manager grid inside . 这里已经有由 packenter 代码管理的从站

Question

我正在尝试创建一个基于 Entry 小部件的子小部件。不幸的是它没有像我想象的那样工作。来自以下代码:

import tkinter as tk

WINDOW_WIDTH = 800
WINDOW_HEIGHT = 600


class Application(tk.Frame):

    def __init__(self, master=None):
        tk.Frame.__init__(self, master)
        self.pack()
        self.createWidgets()

    def createWidgets(self):
        self.hi_there = tk.Button(self)
        self.hi_there["text"] = "SOLVE"
        self.hi_there.grid(row=1, column=1)

        self.QUIT = tk.Button(
            self, text="QUIT", fg="red", command=self.master.quit)
        self.QUIT.grid(row=1, column=2)

        # self.number_box = tk.Entry(self) # This is working
        self.number_box = NumberBox(self)  # this is not working
        self.number_box.grid(row=2, column=1)


class MainWindow():

    def __init__(self):
        #self.root = tk.Tk()
        self.app = Application()
        self.app.master.title("SUDOKU")
        self.app.master.minsize(width=WINDOW_WIDTH, height=WINDOW_HEIGHT)
        self.app.master.maxsize(width=WINDOW_WIDTH, height=WINDOW_HEIGHT)
        self.app.mainloop()


class NumberBox(tk.Entry):

    def __init__(self, master=None, cnf={}, **kw):

        super().__init__(cnf, kw)
        #self.text = tk.StringVar()


window = MainWindow()

我收到错误:

Traceback (most recent call last):
File "E:/workspace/python/sudoku/gui/guitk.py", line 42, in <module>
window = MainWindow()
File "E:/workspace/python/sudoku/gui/guitk.py", line 28, in __init__
self.app = Application()
File "E:/workspace/python/sudoku/gui/guitk.py", line 11, in __init__
self.createWidgets()
File "E:/workspace/python/sudoku/gui/guitk.py", line 22, in createWidgets
self.number_box.grid(row=2, column=1)
File "C:\Python34\lib\tkinter\__init__.py", line 2057, in grid_configure
+ self._options(cnf, kw))
_tkinter.TclError: cannot use geometry manager grid inside . which already has slaves managed by packenter code here

当我直接使用 Entry 类(而不是 NumberBox，请参阅注释行)时，代码可以正常工作。我从 Entry 继承有什么问题导致我的类无法正常工作。

Answer 1

您的 super() 调用看起来错误。您需要传递父窗口小部件并传递解压的关键字参数，如下所示:

super().__init__(master, cnf, **kw)