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-rw-r--r--src/hwdata.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/hwdata.h b/src/hwdata.h
index 806f43d..d552b1b 100644
--- a/src/hwdata.h
+++ b/src/hwdata.h
@@ -29,6 +29,10 @@
#define MT_BUTTON_LEFT 0
#define MT_BUTTON_MIDDLE 1
#define MT_BUTTON_RIGHT 2
+#define MT_BUTTON_WHEEL_UP 3
+#define MT_BUTTON_WHEEL_DOWN 4
+#define MT_BUTTON_HWHEEL_LEFT 5
+#define MT_BUTTON_HWHEEL_RIGHT 6
typedef unsigned int button_t;