python - 如果我们最大化窗口，则调整小部件的大小

Question

如果窗口最大化，我想展开小部件。请找到下面的示例代码，如果我们运行它，我们将得到一些 TreeView ，但如果我们最大化窗口，那么 TreeView 将移动到左上角，是否有可能使该 View 在最大化后展开并完美适合。谢谢

import os
import tkinter as tk
import tkinter.ttk as ttk
import datetime
import re
import threading


class Window:
    i=0
    def __init__(self,master):
        self.master=master
        self.master.geometry('700x350+350+100')
        self.label = tk.Label(self.master, text='Sample', font=("Arial", 20)).grid(row=0,columnspan=3)
        cols = ('A','B','C')
        self.treeview = ttk.Treeview(self.master, columns=cols)
        v_scrollbar = ttk.Scrollbar(self.master, orient='vertical', command=self.treeview.yview)
        self.treeview.config( yscrollcommand=v_scrollbar.set)
        for col in cols:
            self.treeview.heading(col, text=col)
            self.treeview.column(col,minwidth=0,width=170)
        
        self.treeview.grid(row=1, column=0)
        v_scrollbar.grid(row=1, column=1, sticky='nes')
        
        

#--- main---

def main():
    root = tk.Tk()
    
    Window(root)
    root.mainloop()
    
if __name__ == '__main__':
    main()

Answer 1

首先添加:

self.master.rowconfigure(1, weight=1)
self.master.columnconfigure(0, weight=1)

告诉布局管理器扩展放置 treeview 的单元格以填充可用空间。

然后将sticky='nsew'添加到self.treeview.grid(...):

self.treeview.grid(row=1, column=0, sticky='nsew')

下面是修改后的__init__():

def __init__(self,master):
    self.master=master
    self.master.geometry('700x350+350+100')
    tk.Label(self.master, text='Sample', font=("Arial", 20)).grid(row=0,columnspan=3)
    cols = ('A','B','C')
    self.treeview = ttk.Treeview(self.master, columns=cols)
    v_scrollbar = ttk.Scrollbar(self.master, orient='vertical', command=self.treeview.yview)
    self.treeview.config( yscrollcommand=v_scrollbar.set)
    for col in cols:
        self.treeview.heading(col, text=col)
        self.treeview.column(col,minwidth=0,width=170)
    
    self.treeview.grid(row=1, column=0, sticky='nsew') # added sticky='nsew'
    v_scrollbar.grid(row=1, column=1, sticky='ns')

    # tell layout manager to expand the cell where the treeview is
    self.master.rowconfigure(1, weight=1)
    self.master.columnconfigure(0, weight=1)