title: Is the QT DEFINES doing the same thing as #define in C++?
body: <p>What does the <code>DEFINES += includthisvariable</code> do in QT for a <code>.pro</code> file?</p>
  
  <p>If it works like the <code>#define</code> in C++, where is <code>includethisvariable</code> defined so that the preprocessor can replace <code>includethisvariable</code> with the value I set?</p>
  
  <p>I understand what <code>#define</code> does in c++ because you set the value beside what you define. However here it seems like you just list a name...The QT docs didn't help explain this for me.</p>