1 files changed, 14 insertions, 0 deletions
diff --git a/engines/titanic/messages/mouse_messages.h b/engines/titanic/messages/mouse_messages.h
index a10f3b42a8..05f9685c04 100644
--- a/engines/titanic/messages/mouse_messages.h
+++ b/engines/titanic/messages/mouse_messages.h
@@ -101,6 +101,20 @@ public:
 	static void generate();
 };
 
+class CMouseWheelMsg : public CMouseMsg {
+public:
+	bool _wheelUp;
+public:
+	CLASSDEF;
+	CMouseWheelMsg() : CMouseMsg(), _wheelUp(false) {}
+	CMouseWheelMsg(const Point &pt, bool wheelUp) :
+		CMouseMsg(pt, 0), _wheelUp(wheelUp) {}
+
+	static bool isSupportedBy(const CTreeItem *item) {
+		return supports(item, _type);
+	}
+};
+
 class CMouseDoubleClickMsg : public CMouseButtonMsg {
 public:
 	CLASSDEF;