diff --git a/src/views/stack.rs b/src/views/stack.rs
index b2679634..c08f5296 100644
--- a/src/views/stack.rs
+++ b/src/views/stack.rs
@@ -65,13 +65,7 @@ impl<VT: ViewTuple + 'static> View for Stack<VT> {
     }
 
     fn process(&self, event: &Event, id: ViewId, cx: &mut Context, vger: &mut Vger) {
-        let mut c = 0;
-        self.children.foreach_view(&mut |child| {
-            let child_id = id.child(&c);
-            let offset = cx.layout.entry(child_id).or_default().offset;
-            (*child).process(&event.offset(-offset), child_id, cx, vger);
-            c += 1;
-        })
+        self.children.process(event, id, cx, vger);
     }
 
     fn draw(&self, id: ViewId, cx: &mut Context, vger: &mut Vger) {
diff --git a/src/viewtuple.rs b/src/viewtuple.rs
index b1018bf2..7cd626ff 100644
--- a/src/viewtuple.rs
+++ b/src/viewtuple.rs
@@ -8,6 +8,7 @@ pub trait ViewTuple {
         false
     } // satisfy clippy
 
+    fn process(&self, event: &Event, id: ViewId, cx: &mut Context, vger: &mut Vger);
     fn draw(&self, id: ViewId, cx: &mut Context, vger: &mut Vger);
 }
 
@@ -22,6 +23,14 @@ macro_rules! impl_view_tuple {
                 $n
             }
 
+            fn process(&self, event: &Event, id: ViewId, cx: &mut Context, vger: &mut Vger) {
+                $({
+                    let child_id = id.child(&$s);
+                    let offset = cx.layout.entry(child_id).or_default().offset;
+                    self.$s.process(&event.offset(-offset), child_id, cx, vger);
+                })*
+            }
+
             fn draw(&self, id: ViewId, cx: &mut Context, vger: &mut Vger) {
                 $({
                     let child_id = id.child(&$s);