title: Visual Studio 2015 “Apply Code Changes” is disabled
body: <p>When using Visual Studio 2015, “Apply Code Changes” is always disabled. I've seen MANY posts regarding this, but I haven't found a solution.</p>
  
  <p>Here are some details:</p>
  
  <ul>
  <li>Project > Properties > Linker > General > Enable Incremental Linking is "Yes (/INCREMENTAL)". </li>
  <li>Project > Properties > C/C++ > General > Debug Information Format is "Program Database for Edit and Continue (/ZI). </li>
  <li>Tools > Options > Debugging > General > Enable Edit and Continue has a checkmark, as do Enable Native Edit and Continue, Apply changes on continue, Warn about stale code, and Allow precomiling are all checked.</li>
  <li>Project > Properties > General > Platform Toolset is set to "Visual Studio 2010 (v100)". </li>
  <li>I deleted my project's *.ilk file.</li>
  </ul>
  
  <p>This was working with this project. I think it stopped working when I changed to the VS 2015 IDE (as noted above, I still compile it using the 2010 compiler).</p>
  
  <p>Thanks!</p>