title: 'Undeclared Identifier' error with defined constants
body: <p>My defined constants are giving me 'undeclared identifier' issues. I have them in a <code>Constants.h</code> file that I am including in my .pch file. I thought it might be something with my .pch file, however, if I delete it from there and try <code>#import</code> it in one of the classes where I need one of the constants, then I still get an 'undeclared identifier' error. </p>
  
  <p>If I take each <code>#define</code> line and put them at the top of the .m class file directly, they work. So my syntax is correct.</p>
  
  <p>So it's something with the .h file itself, but I have no idea what.</p>
  
  <pre><code>//
  //  Constants.h
  
  // Sliding Drawer
  #define kOffscreenX 320    // X coord when Sliding Drawer is offscreen
  #define kVisibleX 40       // X coord when Sliding Drawer is visible
  
  // WordlistButton
  #define kNumScores 3
  
  // Fonts
  #define kMessageFontSize 14
  #define kScoreFontSize 10
  </code></pre>