python - tkinter - 添加小部件时如何停止改变框架的大小？

Question

在页面框架中，我在 innerFrame 中对两个框架进行了加权，以便它们各自占据屏幕的一半，但是，当我向这些框架之一添加一个小部件时，我使用了一个列表框作为示例它很大，其中一个框架现在比另一个框架占据更多。我该如何做到这一点，以便在添加小部件时框架不会改变大小，并且每个框架都保持窗口大小的一半？

这是我的代码:

import tkinter as tk
from tkinter import ttk

class Program(tk.Tk):        
    def __init__(self, *args, **kwargs):
        tk.Tk.__init__(self, *args, **kwargs)

        tk.Tk.iconbitmap(self, default = "")
        tk.Tk.wm_title(self, "")

        container = tk.Frame(self)
        container.pack(side="top", fill="both", expand=True)
        container.grid_rowconfigure(0, weight=1)
        container.grid_columnconfigure(0, weight=1)

        self.frames = {}
        for F in (Page, Other):

            frame = F(container, self)
            self.frames[F] = frame
            frame.grid(row = 0, column = 0, sticky = "nsew")

        self.show_frame(Page)

    def show_frame(self,cont):
        frame = self.frames[cont]
        frame.tkraise()


class Page(tk.Frame):

    def __init__(self, parent, controller):


        tk.Frame.__init__(self, parent)

        innerFrame = tk.Frame(self, bg="red")
        innerFrame.place(relx=.5, rely=.5, anchor="c", relwidth=1.0, relheight=1.0)


        innerFrame.grid_rowconfigure(0, weight=1)
        innerFrame.grid_rowconfigure(1, weight=1)
        innerFrame.grid_columnconfigure(0, weight=1)

        #First Half
        frameOne = tk.Frame(innerFrame, bg="pink")
        frameOne.grid(row=0, sticky="NSWE")

        #Second Half
        frameTwo = tk.Frame(innerFrame, bg="green")
        frameTwo.grid(row=1, sticky="NSWE")

        lb = tk.Listbox(frameTwo)
        lb.pack(fill="both", expand=True)


class Other(tk.Frame):
    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)



app = Program()
app.state('zoomed')
app.mainloop()

Answer 1

Grid 接受参数uniform，它可以取任意值。具有相同值的所有行(或所有列)都被视为“统一组”的一部分。这会强制行(或列)的大小与其权重成比例。

如果您在一个框架中有两行，两行具有相同的权重，并且都属于同一统一组，它们将分别占用可用空间的 50%。

在您的情况下，您可以这样做:

innerFrame.grid_rowconfigure(0, weight=1, uniform="x")
innerFrame.grid_rowconfigure(1, weight=1, uniform="x")

(同样，“x”是任意的；它可以是任何值，只要两行的值相同即可)

tk 的官方文档(构建 tkinter 的基础)是这样描述的(参见 http://tcl.tk/man/tcl8.5/TkCmd/grid.htm#M24)

The -uniform option, when a non-empty value is supplied, places the row in a uniform group with other rows that have the same value for -uniform. The space for rows belonging to a uniform group is allocated so that their sizes are always in strict proportion to their -weight values.

...

When multiple rows or columns belong to a uniform group, the space allocated to them is always in proportion to their weights. (A weight of zero is considered to be 1.) In other words, a row or column configured with -weight 1 -uniform a will have exactly the same size as any other row or column configured with -weight 1 -uniform a. A row or column configured with -weight 2 -uniform b will be exactly twice as large as one that is configured with -weight 1 -uniform b.

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注意:uniform 选项没有出现在 tkinter 文档中，但它是一个完全有效的选项。多年来，它一直是 tk(tkinter 建立在其上)的一部分。