title: How to use Skia on Windows or Linux
body: <p>I have built Skia. What do I do now to get an SkCanvas and draw on it? <a href="https://stackoverflow.com/questions/30897320/skia-rendering-on-windowsskcanvas-from-hdc">This</a> answer  does not properly answer the question because<br>
  A: It uses API that doesn't exist anymore, like <code>bitmap.lockPixels()</code>,<br>
  B: It uses some unkown context and draws a <code>this</code> from it,<br>
  C: It doesn't actually create an SkCanvas?...<br>
  Ideally I would like an example that doesn't assume <em>anything</em>. A full C++ program that draws <em>something</em> on the screen using Skia. </p>