Index: ps/trunk/source/gui/CGUI.h
===================================================================
--- ps/trunk/source/gui/CGUI.h
+++ ps/trunk/source/gui/CGUI.h
@@ -650,6 +650,12 @@
 
 	// Icons
 	std::map<CStr, const SGUIIcon> m_Icons;
+
+public:
+	/**
+	 * Stores all the IGUIObject which listen to a given event.
+	 */
+	std::map<CStr, std::set<IGUIObject*>> m_EventIGUIObjects;
 };
 
 #endif // INCLUDED_CGUI
Index: ps/trunk/source/gui/CGUI.cpp
===================================================================
--- ps/trunk/source/gui/CGUI.cpp
+++ ps/trunk/source/gui/CGUI.cpp
@@ -278,12 +278,24 @@
 
 void CGUI::SendEventToAll(const CStr& eventName)
 {
-	m_BaseObject.RecurseObject(nullptr, &IGUIObject::ScriptEvent, eventName);
+	auto it = m_EventIGUIObjects.find(eventName);
+	if (it == m_EventIGUIObjects.end())
+		return;
+
+	std::set<IGUIObject*> copy = it->second;
+	for (IGUIObject* pIGUIObject : copy)
+		pIGUIObject->ScriptEvent(eventName);
 }
 
 void CGUI::SendEventToAll(const CStr& eventName, const JS::HandleValueArray& paramData)
 {
-	m_BaseObject.RecurseObject(nullptr, &IGUIObject::ScriptEvent, eventName, paramData);
+	auto it = m_EventIGUIObjects.find(eventName);
+	if (it == m_EventIGUIObjects.end())
+		return;
+
+	std::set<IGUIObject*> copy = it->second;
+	for (IGUIObject* pIGUIObject : copy)
+		pIGUIObject->ScriptEvent(eventName, paramData);
 }
 
 void CGUI::Draw()
Index: ps/trunk/source/gui/ObjectBases/IGUIObject.cpp
===================================================================
--- ps/trunk/source/gui/ObjectBases/IGUIObject.cpp
+++ ps/trunk/source/gui/ObjectBases/IGUIObject.cpp
@@ -334,6 +334,12 @@
 		JS_AddExtraGCRootsTracer(m_pGUI.GetScriptInterface()->GetJSRuntime(), Trace, this);
 
 	m_ScriptHandlers[eventName] = JS::Heap<JSObject*>(Function);
+
+	auto it = m_pGUI.m_EventIGUIObjects.find(eventName);
+	if (it == m_pGUI.m_EventIGUIObjects.end())
+		m_pGUI.m_EventIGUIObjects.emplace(eventName, std::set<IGUIObject*>{this});
+	else
+		it->second.insert(this);
 }
 
 void IGUIObject::UnsetScriptHandler(const CStr& eventName)
@@ -347,6 +353,15 @@
 
 	if (m_ScriptHandlers.empty())
 		JS_RemoveExtraGCRootsTracer(m_pGUI.GetScriptInterface()->GetJSRuntime(), Trace, this);
+	{
+		auto it = m_pGUI.m_EventIGUIObjects.find(eventName);
+		if (it != m_pGUI.m_EventIGUIObjects.end())
+		{
+			it->second.erase(this);
+			if (!it->second.size())
+				m_pGUI.m_EventIGUIObjects.erase(eventName);
+		}
+	}
 }
 
 InReaction IGUIObject::SendEvent(EGUIMessageType type, const CStr& eventName)