class MyDockableCtrl : public DockableCtrl
{	
	virtual void State(int reason) {
		if (reason == Ctrl::SHOW && DockableCtrl::IsTabbed()
			&& &GetContainer()->GetCurrent() == this)
			WhenTabSelect();	
	}	
public:
	DockCont *GetContainer() const { return DockableCtrl::GetContainer(); }
	Callback WhenTabSelect;
};