title: Installing OpenGL for Qt
body: <p>I just have installed Qt 4 on windows 7. I am now in a bit of a confusion
  How do I get to install OpenGL so that it works with QT? Is there an installer for OpenGL?
  Qt docs. say it has support for OpenGL, but when I include QTOpenGL and build, the compiler issues an error of  "No such file or directory"</p>
  
  <p>Thanks for the reply in advance!</p>