diff --git a/mp/src/app.rs b/mp/src/app.rs
index a3f8561..ff536b8 100644
--- a/mp/src/app.rs
+++ b/mp/src/app.rs
@@ -235,6 +235,18 @@ impl MatchEvent for App {
         self.file_manager.try_deal_file(&self.ui, cx);
     }
 
+    fn handle_actions(&mut self, cx: &mut Cx, actions: &Actions) {
+        let ui = self.ui.clone();
+
+        if ui.button(id!(start)).clicked(actions) {
+            cx.action(AppAction::OpenFile);
+        }
+
+        for action in actions.iter() {
+            self.handle_action(cx, action);
+        }
+    }
+
     fn handle_action(&mut self, _cx: &mut Cx, e: &Action) {
         let ui = self.ui.clone();
 
diff --git a/mp/src/app_ui.rs b/mp/src/app_ui.rs
index a91dcf5..d5679cd 100644
--- a/mp/src/app_ui.rs
+++ b/mp/src/app_ui.rs
@@ -91,6 +91,11 @@ live_design! {
 
                 <H4>{ text: "Controller"}
 
+                start = <Button> {
+                    text: "Start"
+                    width: Fill
+                }
+
                 <Group> {
                     <Slider> {
                         width: Fill,