finish enums3

Author: cyz-ing

exercises/enums/enums3.rs

@@ -47,6 +47,20 @@ impl State {
         // variants
         // Remember: When passing a tuple as a function argument, you'll need
         // extra parentheses: fn function((t, u, p, l, e))
+        match message{
+            Message::ChangeColor(r,g,b)=>{
+                self.change_color((r,g,b));
+            }
+            Message::Echo(s) => {
+                self.echo(s);
+            }
+            Message::Move(p) => {
+                self.move_position(p);
+            }
+            Message::Quit => {
+                self.quit();
+            }
+        }
     }
 }