diff --git a/bar/backend.h b/bar/backend.h
index f2681a8..d365da6 100644
--- a/bar/backend.h
+++ b/bar/backend.h
@@ -10,7 +10,7 @@ struct backend {
     void (*loop)(struct bar *bar,
                  void (*expose)(const struct bar *bar),
                  void (*on_mouse)(struct bar *bar, enum mouse_event event,
-                                  int x, int y));
+                                  enum mouse_button btn, int x, int y));
     void (*commit)(const struct bar *bar);
     void (*refresh)(const struct bar *bar);
     void (*set_cursor)(struct bar *bar, const char *cursor);
diff --git a/bar/bar.c b/bar/bar.c
index 0e51608..b7557fd 100644
--- a/bar/bar.c
+++ b/bar/bar.c
@@ -151,7 +151,8 @@ set_cursor(struct bar *bar, const char *cursor)
 }
 
 static void
-on_mouse(struct bar *_bar, enum mouse_event event, int x, int y)
+on_mouse(struct bar *_bar, enum mouse_event event, enum mouse_button btn,
+         int x, int y)
 {
     struct private *bar = _bar->private;
 
@@ -173,7 +174,7 @@ on_mouse(struct bar *_bar, enum mouse_event event, int x, int y)
         mx += bar->left_spacing;
         if (x >= mx && x < mx + e->width) {
             if (e->on_mouse != NULL)
-                e->on_mouse(e, _bar, event, x - mx, y);
+                e->on_mouse(e, _bar, event, btn, x - mx, y);
             return;
         }
 
@@ -187,7 +188,7 @@ on_mouse(struct bar *_bar, enum mouse_event event, int x, int y)
         mx += bar->left_spacing;
         if (x >= mx && x < mx + e->width) {
             if (e->on_mouse != NULL)
-                e->on_mouse(e, _bar, event, x - mx, y);
+                e->on_mouse(e, _bar, event, btn, x - mx, y);
             return;
         }
 
@@ -205,7 +206,7 @@ on_mouse(struct bar *_bar, enum mouse_event event, int x, int y)
         mx += bar->left_spacing;
         if (x >= mx && x < mx + e->width) {
             if (e->on_mouse != NULL)
-                e->on_mouse(e, _bar, event, x - mx, y);
+                e->on_mouse(e, _bar, event, btn, x - mx, y);
             return;
         }
 
diff --git a/bar/wayland.c b/bar/wayland.c
index 1a72577..05a12a9 100644
--- a/bar/wayland.c
+++ b/bar/wayland.c
@@ -10,6 +10,7 @@
 
 #include <sys/mman.h>
 #include <linux/memfd.h>
+#include <linux/input-event-codes.h>
 
 #include <pixman.h>
 #include <wayland-client.h>
@@ -113,7 +114,8 @@ struct wayland_backend {
     struct buffer *pending_buffer;  /* Finished, but not yet rendered */
 
     void (*bar_expose)(const struct bar *bar);
-    void (*bar_on_mouse)(struct bar *bar, enum mouse_event event, int x, int y);
+    void (*bar_on_mouse)(struct bar *bar, enum mouse_event event,
+                         enum mouse_button btn, int x, int y);
 };
 
 static void
@@ -262,7 +264,8 @@ wl_pointer_motion(void *data, struct wl_pointer *wl_pointer,
 
     backend->active_seat = seat;
     backend->bar_on_mouse(
-        backend->bar, ON_MOUSE_MOTION, seat->pointer.x, seat->pointer.y);
+        backend->bar, ON_MOUSE_MOTION, MOUSE_BTN_NONE,
+        seat->pointer.x, seat->pointer.y);
 }
 
 static void
@@ -276,8 +279,19 @@ wl_pointer_button(void *data, struct wl_pointer *wl_pointer,
     struct wayland_backend *backend = seat->backend;
 
     backend->active_seat = seat;
+
+    enum mouse_button btn;
+
+    switch (button) {
+    case BTN_LEFT:   btn = MOUSE_BTN_LEFT; break;
+    case BTN_MIDDLE: btn = MOUSE_BTN_MIDDLE; break;
+    case BTN_RIGHT:  btn = MOUSE_BTN_RIGHT; break;
+    default:
+        return;
+    }
+
     backend->bar_on_mouse(
-        backend->bar, ON_MOUSE_CLICK, seat->pointer.x, seat->pointer.y);
+        backend->bar, ON_MOUSE_CLICK, btn, seat->pointer.x, seat->pointer.y);
 }
 
 static void
@@ -1011,7 +1025,8 @@ cleanup(struct bar *_bar)
 static void
 loop(struct bar *_bar,
      void (*expose)(const struct bar *bar),
-     void (*on_mouse)(struct bar *bar, enum mouse_event event, int x, int y))
+     void (*on_mouse)(struct bar *bar, enum mouse_event event,
+                      enum mouse_button btn, int x, int y))
 {
     struct private *bar = _bar->private;
     struct wayland_backend *backend = bar->backend.data;
diff --git a/bar/xcb.c b/bar/xcb.c
index 99b787d..6229bc5 100644
--- a/bar/xcb.c
+++ b/bar/xcb.c
@@ -312,7 +312,8 @@ cleanup(struct bar *_bar)
 static void
 loop(struct bar *_bar,
      void (*expose)(const struct bar *bar),
-     void (*on_mouse)(struct bar *bar, enum mouse_event event, int x, int y))
+     void (*on_mouse)(struct bar *bar, enum mouse_event event,
+                      enum mouse_button btn, int x, int y))
 {
     struct private *bar = _bar->private;
     struct xcb_backend *backend = bar->backend.data;
@@ -357,7 +358,7 @@ loop(struct bar *_bar,
 
             case XCB_MOTION_NOTIFY: {
                 const xcb_motion_notify_event_t *evt = (void *)e;
-                on_mouse(_bar, ON_MOUSE_MOTION, evt->event_x, evt->event_y);
+                on_mouse(_bar, ON_MOUSE_MOTION, MOUSE_BTN_NONE, evt->event_x, evt->event_y);
                 break;
             }
 
@@ -366,7 +367,13 @@ loop(struct bar *_bar,
 
             case XCB_BUTTON_RELEASE: {
                 const xcb_button_release_event_t *evt = (void *)e;
-                on_mouse(_bar, ON_MOUSE_CLICK, evt->event_x, evt->event_y);
+
+                switch (evt->detail) {
+                case 1: case 2: case 3:
+                    on_mouse(_bar, ON_MOUSE_CLICK,
+                             evt->detail, evt->event_x, evt->event_y);
+                    break;
+                }
                 break;
             }
 
diff --git a/particle.c b/particle.c
index ffe330f..2ce4800 100644
--- a/particle.c
+++ b/particle.c
@@ -141,10 +141,11 @@ err:
 
 void
 exposable_default_on_mouse(struct exposable *exposable, struct bar *bar,
-                           enum mouse_event event, int x, int y)
+                           enum mouse_event event, enum mouse_button btn,
+                           int x, int y)
 {
-    LOG_DBG("on_mouse: exposable=%p, event=%s, x=%d, y=%d (on-click=%s)",
-            exposable, event == ON_MOUSE_MOTION ? "motion" : "click", x, y,
+    LOG_DBG("on_mouse: exposable=%p, event=%s, btn=%d, x=%d, y=%d (on-click=%s)",
+            exposable, event == ON_MOUSE_MOTION ? "motion" : "click", btn, x, y,
             exposable->on_click);
 
     /* If we have a handler, change cursor to a hand */
diff --git a/particle.h b/particle.h
index e89b9c4..1fc582a 100644
--- a/particle.h
+++ b/particle.h
@@ -29,6 +29,13 @@ enum mouse_event {
     ON_MOUSE_CLICK,
 };
 
+enum mouse_button {
+    MOUSE_BTN_NONE,
+    MOUSE_BTN_LEFT,
+    MOUSE_BTN_MIDDLE,
+    MOUSE_BTN_RIGHT,
+};
+
 struct exposable {
     const struct particle *particle;
     void *private;
@@ -42,7 +49,7 @@ struct exposable {
                    int x, int y, int height);
 
     void (*on_mouse)(struct exposable *exposable, struct bar *bar,
-                     enum mouse_event event, int x, int y);
+                     enum mouse_event event, enum mouse_button btn, int x, int y);
 };
 
 struct particle *particle_common_new(
@@ -59,7 +66,7 @@ void exposable_render_deco(
 
 void exposable_default_on_mouse(
     struct exposable *exposable, struct bar *bar,
-    enum mouse_event event, int x, int y);
+    enum mouse_event event, enum mouse_button btn, int x, int y);
 
 /* List of attributes *all* particles implement */
 #define PARTICLE_COMMON_ATTRS                      \
diff --git a/particles/dynlist.c b/particles/dynlist.c
index c04d610..00bb41f 100644
--- a/particles/dynlist.c
+++ b/particles/dynlist.c
@@ -67,13 +67,13 @@ dynlist_expose(const struct exposable *exposable, pixman_image_t *pix, int x, in
 
 static void
 on_mouse(struct exposable *exposable, struct bar *bar,
-         enum mouse_event event, int x, int y)
+         enum mouse_event event, enum mouse_button btn, int x, int y)
 {
     //const struct particle *p = exposable->particle;
     const struct private *e = exposable->private;
 
     if (exposable->on_click != NULL) {
-        exposable_default_on_mouse(exposable, bar, event, x, y);
+        exposable_default_on_mouse(exposable, bar, event, btn, x, y);
         return;
     }
 
@@ -82,7 +82,7 @@ on_mouse(struct exposable *exposable, struct bar *bar,
         if (x >= px && x < px + e->exposables[i]->width) {
             if (e->exposables[i]->on_mouse != NULL) {
                 e->exposables[i]->on_mouse(
-                    e->exposables[i], bar, event, x - px, y);
+                    e->exposables[i], bar, event, btn, x - px, y);
             }
             return;
         }
@@ -91,7 +91,7 @@ on_mouse(struct exposable *exposable, struct bar *bar,
     }
 
     LOG_DBG("on_mouse missed all sub-particles");
-    exposable_default_on_mouse(exposable, bar, event, x, y);
+    exposable_default_on_mouse(exposable, bar, event, btn, x, y);
 }
 
 struct exposable *
diff --git a/particles/list.c b/particles/list.c
index 6f51152..f9e61f6 100644
--- a/particles/list.c
+++ b/particles/list.c
@@ -75,14 +75,14 @@ expose(const struct exposable *exposable, pixman_image_t *pix, int x, int y, int
 
 static void
 on_mouse(struct exposable *exposable, struct bar *bar,
-         enum mouse_event event, int x, int y)
+         enum mouse_event event, enum mouse_button btn, int x, int y)
 {
     const struct particle *p = exposable->particle;
     const struct eprivate *e = exposable->private;
 
     if (exposable->on_click != NULL) {
         /* We have our own handler */
-        exposable_default_on_mouse(exposable, bar, event, x, y);
+        exposable_default_on_mouse(exposable, bar, event, btn, x, y);
         return;
     }
 
@@ -91,7 +91,7 @@ on_mouse(struct exposable *exposable, struct bar *bar,
         if (x >= px && x < px + e->exposables[i]->width) {
             if (e->exposables[i]->on_mouse != NULL) {
                 e->exposables[i]->on_mouse(
-                    e->exposables[i], bar, event, x - px, y);
+                    e->exposables[i], bar, event, btn, x - px, y);
             }
             return;
         }
@@ -100,7 +100,7 @@ on_mouse(struct exposable *exposable, struct bar *bar,
     }
 
     /* We're between sub-particles (or in the left/right margin) */
-    exposable_default_on_mouse(exposable, bar, event, x, y);
+    exposable_default_on_mouse(exposable, bar, event, btn, x, y);
 }
 
 static struct exposable *
diff --git a/particles/map.c b/particles/map.c
index 57bb0fb..cc26f77 100644
--- a/particles/map.c
+++ b/particles/map.c
@@ -61,26 +61,26 @@ expose(const struct exposable *exposable, pixman_image_t *pix, int x, int y, int
 
 static void
 on_mouse(struct exposable *exposable, struct bar *bar, enum mouse_event event,
-         int x, int y)
+         enum mouse_button btn, int x, int y)
 {
     const struct particle *p = exposable->particle;
     const struct eprivate *e = exposable->private;
 
     if (exposable->on_click != NULL) {
         /* We have our own handler */
-        exposable_default_on_mouse(exposable, bar, event, x, y);
+        exposable_default_on_mouse(exposable, bar, event, btn, x, y);
         return;
     }
 
     int px = p->left_margin;
     if (x >= px && x < px + e->exposable->width) {
         if (e->exposable->on_mouse != NULL)
-            e->exposable->on_mouse(e->exposable, bar, event, x - px, y);
+            e->exposable->on_mouse(e->exposable, bar, event, btn, x - px, y);
         return;
     }
 
     /* In the left- or right margin */
-    exposable_default_on_mouse(exposable, bar, event, x, y);
+    exposable_default_on_mouse(exposable, bar, event, btn, x, y);
 }
 
 static struct exposable *
diff --git a/particles/progress-bar.c b/particles/progress-bar.c
index ad5c4cd..62a58b9 100644
--- a/particles/progress-bar.c
+++ b/particles/progress-bar.c
@@ -85,10 +85,10 @@ expose(const struct exposable *exposable, pixman_image_t *pix, int x, int y, int
 
 static void
 on_mouse(struct exposable *exposable, struct bar *bar, enum mouse_event event,
-         int x, int y)
+         enum mouse_button btn, int x, int y)
 {
     if (exposable->on_click == NULL) {
-        exposable_default_on_mouse(exposable, bar, event, x, y);
+        exposable_default_on_mouse(exposable, bar, event, btn, x, y);
         return;
     }
 
@@ -120,7 +120,7 @@ on_mouse(struct exposable *exposable, struct bar *bar, enum mouse_event event,
             /* Mouse is over the start-marker */
             struct exposable *start = e->exposables[0];
             if (start->on_mouse != NULL)
-                start->on_mouse(start, bar, event, x - p->left_margin, y);
+                start->on_mouse(start, bar, event, btn, x - p->left_margin, y);
         } else {
             /* Mouse if over left margin */
             bar->set_cursor(bar, "left_ptr");
@@ -139,7 +139,7 @@ on_mouse(struct exposable *exposable, struct bar *bar, enum mouse_event event,
             /* Mouse is over the end-marker */
             struct exposable *end = e->exposables[e->count - 1];
             if (end->on_mouse != NULL)
-                end->on_mouse(end, bar, event, x - x_offset - clickable_width, y);
+                end->on_mouse(end, bar, event, btn, x - x_offset - clickable_width, y);
         } else {
             /* Mouse is over the right margin */
             bar->set_cursor(bar, "left_ptr");
@@ -165,7 +165,7 @@ on_mouse(struct exposable *exposable, struct bar *bar, enum mouse_event event,
     }
 
     /* Call default implementation, which will execute our handler */
-    exposable_default_on_mouse(exposable, bar, event, x, y);
+    exposable_default_on_mouse(exposable, bar, event, btn, x, y);
 
     if (event == ON_MOUSE_CLICK) {
         /* Reset handler string */
diff --git a/particles/ramp.c b/particles/ramp.c
index 9a7f06e..8087217 100644
--- a/particles/ramp.c
+++ b/particles/ramp.c
@@ -57,26 +57,26 @@ expose(const struct exposable *exposable, pixman_image_t *pix, int x, int y, int
 
 static void
 on_mouse(struct exposable *exposable, struct bar *bar, enum mouse_event event,
-         int x, int y)
+         enum mouse_button btn, int x, int y)
 {
     const struct particle *p = exposable->particle;
     const struct eprivate *e = exposable->private;
 
     if (exposable->on_click != NULL) {
         /* We have our own handler */
-        exposable_default_on_mouse(exposable, bar, event, x, y);
+        exposable_default_on_mouse(exposable, bar, event, btn, x, y);
         return;
     }
 
     int px = p->left_margin;
     if (x >= px && x < px + e->exposable->width) {
         if (e->exposable->on_mouse != NULL)
-            e->exposable->on_mouse(e->exposable, bar, event, x - px, y);
+            e->exposable->on_mouse(e->exposable, bar, event, btn, x - px, y);
         return;
     }
 
     /* In the left- or right margin */
-    exposable_default_on_mouse(exposable, bar, event, x, y);
+    exposable_default_on_mouse(exposable, bar, event, btn, x, y);
 }
 
 static void