title: Using Python to send/receive text from GUI program
body: <p>I'm using PyWin32's win32process.CreateProcess to start up a GUI program that has functionality I want to use in a Python class.</p>
  
  <p>I want to do the following from Python with this GUI:</p>
  
  <ul>
  <li>sent text to individual windows within the GUI (which seem to change identifiers every time I create the process if WinSpy++ is to be believed),</li>
  <li>click buttons on the GUI to configure and initiate the calculation, and</li>
  <li>retrieve calculation output from the GUI (which allows for either in-GUI text output or save-file output).</li>
  </ul>
  
  <p>Quick question: what Python/PyWin32 functionality should I be researching to accomplish these tasks? I'm not looking for actual code, just the area I should research to learn how to do these things myself. I've scanned most of Learning Python, Programming Python, and Python Programming on Win32 and don't recognize the answer if it's there.</p>
  
  <p>Thanks,</p>
  
  <p>Mike</p>