title: Is it possible to detect that someone is using my window's hwnd or dc
body: <p>I'm creating a native win32 gui application for generating, storing and displaying passwords. I want to detect if someone is trying to screenshot my window or if someone gets a handle to it's DC.</p>
  <p>Is it possible to detect GetDC, BitBlt, GetPixel, billions of ways to get hwnd of my window and others methods to access my application's video memory?</p>