默认情况下，grid中的部件不缩放。
缩放的关键：
rowconfigure（）columnconfigure（）
示例代码：
1 import tkinter as tk 2 import tkinter.ttk as ttk 3 4 win=tk.Tk() 5 win.title("CommunicationTool") 6 win.rowconfigure(1, weight=1) 7 win.columnconfigure(0, weight=1) 8 #setting 9 setFrame = tk.LabelFrame(win,text="Setting")10 setFrame.columnconfigure(2, weight=1)11 comLable = tk.Label(setFrame,text="COM Port: ").grid(row=0,column=0)12 comSpiner = tk.Spinbox(setFrame,text="COM1").grid(row=0,column=1,sticky=tk.EW)13 refrashButton = ttk.Button(setFrame,text="Refresh").grid(row=0,column=2,sticky=tk.W)14 inputLable = tk.Label(setFrame,text="Command: ").grid(row=1,column=0)15 inputEntry = tk.Entry(setFrame).grid(row=1,column=1,sticky=tk.EW,columnspan=2)16 sendButton = ttk.Button(setFrame,text="Send").grid(row=1,column=3)17 setFrame.grid(row=0,sticky=tk.EW)18 #output19 outputFrame = tk.LabelFrame(win,text="Output")20 area = tk.Text(outputFrame).pack(side=tk.BOTTOM,expand=1,fill=tk.BOTH)21 outputFrame.grid(row=1,sticky=tk.NSEW)22 23 win.mainloop()