4 files changed, 19 insertions, 3 deletions
diff --git a/src/libs/gui/App.cpp b/src/libs/gui/App.cpp
index 54547114..9cf69596 100644
--- a/src/libs/gui/App.cpp
+++ b/src/libs/gui/App.cpp
@@ -234,6 +234,17 @@ App::port_activity(Port* port)
 }
 
 
+void
+App::activity_port_destroyed(Port* port)
+{
+	ActivityPorts::iterator i = _activity_ports.find(port);
+	if (i != _activity_ports.end())
+		_activity_ports.erase(i);
+	
+	return;
+}
+
+
 bool
 App::animate()
 {
diff --git a/src/libs/gui/App.hpp b/src/libs/gui/App.hpp
index a693b729..08ceb271 100644
--- a/src/libs/gui/App.hpp
+++ b/src/libs/gui/App.hpp
@@ -98,6 +98,7 @@ public:
 	void quit();
 	
 	void port_activity(Port* port);
+	void activity_port_destroyed(Port* port);
 
 	bool signal() const { return _enable_signal; }
 	bool disable_signals()  { bool old = _enable_signal; _enable_signal = false; return old; }
@@ -163,7 +164,6 @@ protected:
 	
 	Ingen::Shared::World* _world;
 
-	/// <Port, whether it has been seen in gtk callback yet>
 	typedef std::map<Port*, bool> ActivityPorts;
 	ActivityPorts _activity_ports;
 
diff --git a/src/libs/gui/Port.cpp b/src/libs/gui/Port.cpp
index f675497b..0452edc6 100644
--- a/src/libs/gui/Port.cpp
+++ b/src/libs/gui/Port.cpp
@@ -73,6 +73,12 @@ Port::Port(boost::shared_ptr<FlowCanvas::Module> module, SharedPtr<PortModel> pm
 }
 
 
+Port::~Port()
+{
+	App::instance().activity_port_destroyed(this);
+}
+
+
 void
 Port::create_menu()
 {
diff --git a/src/libs/gui/Port.hpp b/src/libs/gui/Port.hpp
index ae9b0c48..4851a63f 100644
--- a/src/libs/gui/Port.hpp
+++ b/src/libs/gui/Port.hpp
@@ -39,8 +39,7 @@ class Port : public FlowCanvas::Port
 {
 public:
 	Port(boost::shared_ptr<FlowCanvas::Module> module, SharedPtr<PortModel> pm, bool flip=false);
-
-	virtual ~Port() {}
+	~Port();
 
 	SharedPtr<PortModel> model() const { return _port_model; }