title: pop up window creation in wxpython
body: <pre><code>#!/usr/bin/python
  
  # myconfig.py
  
  import wx
  
  class MyFrame(wx.Frame):
      def __init__(self, parent, id, title):
          self.cfg = wx.Config('myconfig')
          if self.cfg.Exists('width'):
              w, h = self.cfg.ReadInt('width'), self.cfg.ReadInt('height')
          else:
              (w, h) = (250, 250)
          wx.Frame.__init__(self, parent, id, title, wx.DefaultPosition, wx.Size(w, h))
  
          wx.StaticText(self, -1, 'Width:', (20, 20))
          wx.StaticText(self, -1, 'Height:', (20, 70))
          self.sc1 = wx.SpinCtrl(self, -1, str(w), (80, 15), (60, -1), min=200, max=500)
          self.sc2 = wx.SpinCtrl(self, -1, str(h), (80, 65), (60, -1), min=200, max=500)
          wx.Button(self, 1, 'Save', (20, 120))
  
          self.Bind(wx.EVT_BUTTON, self.OnSave, id=1)
          self.statusbar = self.CreateStatusBar()
          self.Centre()
  
      def OnSave(self, event):
          self.cfg.WriteInt("width", self.sc1.GetValue())
          self.cfg.WriteInt("height", self.sc2.GetValue())
          self.statusbar.SetStatusText('Configuration saved, %s ' % wx.Now())
  
  
  class MyApp(wx.App):
      def OnInit(self):
          frame = MyFrame(None, -1, 'myconfig.py')
          frame.Show(True)
          self.SetTopWindow(frame)
          return True
  
  app = MyApp(0)
  app.MainLoop()
  </code></pre>
  
  <p>how to popup a window if user hits more than max or min value?</p>