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Tkinterのスクロールバー(ttk.Scrollbar)が上下しない場合の対処法

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問題

Tkinterのttk.Scrollbarでテキストボックスにスクロールバーを設置したところ、ドラッグしても上下しませんでした。

スクロールバーが機能しない様子

scroll_ng.gif

元のコード

from tkinter import *
from tkinter import ttk

root = Tk()
style = ttk.Style()

frame1 = ttk.Frame(root, padding=10)
frame1.grid()

txt = Text(frame1, height=12, width=85)
txt.grid(row=1, column=0)

scrollbar = ttk.Scrollbar(
    frame1,
    orient=VERTICAL,
    command=txt.yview)
txt["yscrollcommand"] = scrollbar.set
scrollbar.grid(row=1, column=1)

root.mainloop()

解決法

下部のscrollbar.gridにstickyオプションを付与。

scrollbar.grid(row=1, column=1, sticky=(N, S))

scroll_ok.gif

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