title: Keyboard Navigation and Accessibility for custom SWT widgets
body: <p>I am trying to build a simple custom SWT widget and i want to ensure that it is accessible. I know that accessbility encompasses a lot of factors, but as a starting point, i would at least like to make it navigable via the keyboard.</p>
  
  <p>This is a simplified view of my custom control. I have overridden the 'Canvas' class in SWT.</p>
  
  <p><img src="https://lh6.ggpht.com/_RuaLctwBORU/SpfAn85rIxI/AAAAAAAABcE/GRg0_74DDZE/Picture%201.png" alt="SWT Custom Control" title="SWT Custom Control"></p>
  
  <p>The 'Third Button' is my custom control. Now, the 'tab' toggles through only the first two buttons. I would also like it to focus on my custom control when i tab through the controls. Is there any way to make this possible?</p>
  
  <p>Also, are there any general guidelines on making custom SWT controls accessible?</p>