Foundation classes for a basic GUI implementing simple widgets and events

Dependents:   TouchScreenGUIDemo

Revision:
15:e69fd74d42e4
Parent:
12:63db16fea709
Child:
18:d849f3ada858
--- a/Events/EventDispatcher.cpp	Sat May 21 16:36:02 2016 +0000
+++ b/Events/EventDispatcher.cpp	Sat May 21 18:02:20 2016 +0000
@@ -4,7 +4,7 @@
 }
 
 void EventDispatcher::attachListener(EventListener* l) {
-    _listeners.append(l);
+    _listeners.appendOnce(l);
 }
 
 void EventDispatcher::detachListener(EventListener* l) {