DestroyWindow and delete, different memory cleanup?

I have class A derived from CDialog.

I have create and destroy objects of A many times I see different memory available after

delete a; ( a = new A.....)
and a->DestroyWindow();
Looking like DestroyWindow doesnot free memory.

Is it correct behaviour?
Thanks

Yes it is.

DestroyWindow destroys the window (a MS Windows (TM) ) object. But it won't destroy the corresponding MFC object.

On the other side delete a will destroy both because the destructor of CDialog will call DestroyWindow.

Everytime think: Each new needs a corresponding delete.

With regards
Programartist

Thanks ProgramArtist
it is Ok.
delete is enough .