-#define IS_WHEEL_BUTTON_VERTICAL(b) ((b) >= MB_WHEEL_UP && \
- (b) <= MB_WHEEL_DOWN)
-#define IS_WHEEL_BUTTON_HORIZONTAL(b) ((b) >= MB_WHEEL_LEFT && \
- (b) <= MB_WHEEL_RIGHT)
-#define IS_WHEEL_BUTTON(b) ((b) >= MB_WHEEL_UP && \
- (b) <= MB_WHEEL_DOWN)
+#define IS_WHEEL_BUTTON_VERTICAL(b) ((b) == MB_WHEEL_UP || \
+ (b) == MB_WHEEL_DOWN)
+#define IS_WHEEL_BUTTON_HORIZONTAL(b) ((b) == MB_WHEEL_LEFT || \
+ (b) == MB_WHEEL_RIGHT)
+#define IS_WHEEL_BUTTON(b) (IS_WHEEL_BUTTON_VERTICAL(b) || \
+ IS_WHEEL_BUTTON_HORIZONTAL(b))