tkinterのwindow拡大したときの処理(python)

from tkinter import *
from tkinter import ttk
from tkinter.font import Font

root = Tk()
root.title("test")
root.minsize(100, 100)
root.columnconfigure(0, weight=1)
-root.rowconfigure(0, weight=1)
+root.rowconfigure(0, weight=0)
+root.rowconfigure(1, weight=1)

def btn1():
    root.destroy()
def btn2():
    root.destroy()

# ボタン用
frame1 = ttk.Frame(root, padding=10)
frame1.rowconfigure(1, weight=0)
frame1.columnconfigure(0, weight=0)
frame1.grid(sticky=(N, W, S, E))

# テキスト入力・スクロールバー用
frame2 = ttk.Frame(root, padding=10)
frame2.rowconfigure(1, weight=1)
frame2.columnconfigure(0, weight=1)
frame2.grid(sticky=(N, W, S, E))

# Button
button1 = ttk.Button(
    frame1, text="ボタン1", command=btn1)
button1.grid(
    row=0, column=0, columnspan=2, sticky=(N, W))

button2 = ttk.Button(
    frame1, text="ボタン2", command=btn2)
button2.grid(
    row=1, column=0, columnspan=2, sticky=(N, W))

# Text
f = Font(family='Helvetica', size=16)
v1 = StringVar()
txt = Text(frame2, height=15, width=70)
txt.configure(font=f)
txt.insert(1.0, "テキスト")
-txt.grid(row=3, column=0, sticky=(N, W, S, E))
+txt.grid(row=0, column=0, sticky=(N, W, S, E))

# Scrollbar
scrollbar = ttk.Scrollbar(
    frame2,
    orient=VERTICAL,
    command=txt.yview)
txt['yscrollcommand'] = scrollbar.set
-scrollbar.grid(row=3, column=1, sticky=(N, S))
+scrollbar.grid(row=0, column=1, sticky=(N, S))