117だけど、wxpythonで作ってみた

import wx
import re

class MyApp(wx.PySimpleApp):
def OnInit(self):
Frame = wx.Frame(None, -1, "Text Edit", size=(400,400))
self.Btn = wx.Button(Frame, -1, "Set Number")
self.Btn.Bind(wx.EVT_BUTTON, self.SetNum)
self.TxtBox = wx.TextCtrl(Frame, -1, "One\nTwo\n", style=wx.TE_MULTILINE)
self.SetNum(wx.Event)
MySizer = wx.BoxSizer(wx.VERTICAL)
MySizer.Add(self.Btn, 0, wx.FIXED_MINSIZE | wx.LEFT | wx.RIGHT | wx.TOP, 20)
MySizer.Add(self.TxtBox, 1, wx.EXPAND | wx.ALL, 20)
Frame.SetSizer(MySizer)
Frame.Show(1)
return 1

（つづく）