title: How to pin mouse in center of screen with GLUT?
body: <p>I want to pin my mouse in middle of screen I mean when user move mouse the only thing that he see is rotation in environment also mouse cursor never reach window border ...</p>
  
  <p>I want to handle my camera with mouse but when mouse reach window border or in full screen mode screen border the mouse position doesn't change but camera should still rotate slow or speedy depend on speed of mouse movement...</p>
  
  <p>How should I solve this problem?</p>