title: How to create UI button from SpriteFrames?
body: <p>A "Button" can be created by:</p>
  
  <pre><code>ui::Button* button = ui::Button::create("button.png");
  </code></pre>
  
  <p>How can we use a sprite sheet for this ?</p>
  
  <p>EDIT: If I just put the name of a sprite frame for example:</p>
  
  <pre><code>ui::Button* button = ui::Button::create("button");
  </code></pre>
  
  <p>Then it doesn't detect it - thinks there is a missing image.</p>