title: Multiple windows size for multiple frame in tkinter
body: <p>I'm using the code here:<a href="https://stackoverflow.com/questions/7546050/switch-between-two-frames-in-tkinter">Switch between two frames in tkinter</a> as a basic skeleton for my code, and now I have multiple frame. I was wondering if it's possible to adjust the window size according to the frame size on display. For example, my initial page may be a small and cute 300x300 windows, simply showing a list of button, but once click into another page, the windows changed to 500x500。</p>
  
  <p>Thanks in advance!</p>