Demonstrates how to implement a custom Polymorph object that implements the SetCOM method. When the COM object is allocated, the SetCOM method will be passed a copy of the object, which can be useful if the allocated object needs passing to additional methods from within the COM implementation. Note: As the COM object is maintaining a pointer to…

SetCOM.cpp

class SomeInterface :
	public CLxImpl_Foo
{
	public:
		class MyPolymorph :
			public CLxPolymorph<SomeInterface>
		{
			public:
					virtual void
				SetCOM(
					SomeInterface *implementation,
					ILxUnknownID obj) LXx_OVERRIDE
				{
					implementation->SetObject(obj);
				}
		};
	
			static void
		initialize ()
		{
			MyPolymorph *srv = new MyPolymorph;
			srv->AddInterface(new CLxIfc_Foo<SomeInterface>);
			lx::AddServer("foo", srv);
		}
	
		SomeInterface() :
			mObj(NULL) { }
	
			void
		SetObject(
			ILxUnknownID obj)
		{
			// Do not add-ref.
			mObj = obj;
		}
	
	private:
		ILxUnknownID mObj;
};