title: cannot open source file d3dx10.h
body: <p>I have just made a project in visual studio 2012 ultimate. Within that project and its source files, I added a main.cpp and tried to do</p>
  
  <pre><code>#include &lt;d3dx10.h&gt;
  </code></pre>
  
  <p>I get the error </p>
  
  <pre><code>cannot open source file d3dx10.h
  </code></pre>
  
  <p>I am using windows 10 so isn't DirectX shipped with the include?</p>