Fix linux mouse wheel

glut.rs

@@ -9,7 +9,7 @@
 
 /* automatically generated by rust-bindgen */
 
-use glut::bindgen::{glutCreateWindow, glutDestroyWindow, glutDisplayFunc, glutMouseFunc};
+use glut::bindgen::{glutCreateWindow, glutDestroyWindow, glutDisplayFunc, glutMouseFunc, glutMouseWheelFunc};
 use glut::bindgen::{glutKeyboardFunc, glutGetModifiers, glutMotionFunc, glutPassiveMotionFunc};
 use glut::bindgen::{glutGet, glutGetWindow};
 use glut::bindgen::{glutInit, glutInitDisplayMode, glutPostRedisplay, glutReshapeFunc};
@@ -111,7 +111,7 @@ pub fn set_window(window: Window) {
     }
 }
 
-pub fn set_window_title(window: Window, title: &str) {
+pub fn set_window_title(_window: Window, title: &str) {
     unsafe {
         let bytes = to_bytes(title);
         glutSetWindowTitle(to_ptr(bytes) as *c_char);
@@ -296,15 +296,15 @@ pub fn mouse_wheel_callback_tls_key(_callback: @@fn(wheel: c_int,
 #[cfg(target_os="linux")]
 pub extern fn mouse_wheel_callback(wheel: c_int, direction: c_int, x: c_int, y: c_int) {
     unsafe {
-        let callback = local_data_get(wheel_callback_tls_key).get();
+        let callback = local_data_get(mouse_wheel_callback_tls_key).get();
         (*callback)(wheel, direction, x, y)
     }
 }
 
 #[cfg(target_os="linux")]
 pub fn mouse_wheel_func(callback: @fn(wheel: c_int, direction: c_int, x: c_int, y: c_int)) {
     unsafe {
-        local_data_set(wheel_callback_tls_key, @callback);
+        local_data_set(mouse_wheel_callback_tls_key, @callback);
         glutMouseWheelFunc(mouse_wheel_callback);
     }
 }
@@ -489,6 +489,8 @@ pub fn glutKeyboardFunc(func: *u8);
 
 pub fn glutMouseFunc(func: *u8);
 
+pub fn glutMouseWheelFunc(func: *u8);
+
 pub fn glutMotionFunc(func: *u8);
 
 pub fn glutPassiveMotionFunc(func: *u8);