HELP! delete function using base-class pointer

Too tired to look this up right now...

Can a base-class ptr be used to delete an object of a derived class?

for instance (CMyWnd is derived from CWnd):

CMyWnd* pMyWnd = new CMyWnd; // create derived obj on heap
CWnd* pWnd = pMyWnd; // point base class ptr to obj of derived class
delete pWnd; // delete obj of derived class

this seems to work, but is it a clean deletion? For instance, if CMyWnd has additional data items (takes up more mem) will the CWnd* deletion remove the entire CMyWnd class structure?

Thanx for any help. I have a feeling that I've actually just read the answer to this, but right now everything is just falling out my ears.

Niall

Yes, it's legal as long as the base class contains a virtual destructor.


The universe is a figment of its own imagination.

above code deletes the derived object by calling derivd class destructor since destrcctor os CWnd class is virtual member. derived class destructor should do cleening process