diff -ru /Volumes/glut/GLUTView.m glut/GLUTView.m
--- /Volumes/glut/GLUTView.m	2008-02-08 19:47:22.000000000 +0100
+++ glut/GLUTView.m	2008-03-06 09:32:40.000000000 +0100
@@ -1748,6 +1748,29 @@
    }
 }
 
+/* scroll wheel handling */
+- (void)scrollWheel: (NSEvent *)theEvent
+{
+       if(_mouseFunc) {
+               NSPoint location = [self convertPoint: [theEvent locationInWindow] fromView: nil];
+               float deltaY = [theEvent deltaY];
+               int buttonID = GLUT_WHEEL_UP;
+               if(deltaY < 0) {
+                       deltaY = -deltaY;
+                       buttonID = GLUT_WHEEL_DOWN;
+               }
+               int x = rint(location.x);
+               int y = rint(location.y);
+               
+               __glutSetWindow(self);
+               int i;
+               for(i = 0; i < deltaY; i++) {
+//                     (*_mouseFunc)(buttonID, GLUT_DOWN, x, y);
+                       (*_mouseFunc)(buttonID, GLUT_UP, x, y);
+               }
+       }
+}
+
 - (BOOL)validateMenuItem: (NSMenuItem *)menuItem
 {
    /* User is about to start a menu tracking session. We install a special
diff -ru /Volumes/glut/glut.h glut/glut.h
--- /Volumes/glut/glut.h	2008-02-08 19:47:22.000000000 +0100
+++ glut/glut.h	2008-03-06 09:28:43.000000000 +0100
@@ -181,6 +181,8 @@
 #define GLUT_LEFT_BUTTON		0
 #define GLUT_MIDDLE_BUTTON		1
 #define GLUT_RIGHT_BUTTON		2
+#define GLUT_WHEEL_UP			3
+#define GLUT_WHEEL_DOWN		4
 
 /* Mouse button  state. */
 #define GLUT_DOWN			0