ATL, error C2385: ambiguous access of 'ProcessWindowMessage' of BEGIN_MSG_MAP,

Question

Hi

Platform: Win32/ATL

I created my classes like below but compiler error C2385: ambiguous access of 'ProcessWindowMessage' rises

Thanks

class base : public ATL:CWindow
{
public:
	BEGIN_MSG_MAP(base)
		//...
	END_MSG_MAP()
};

class drived : public ATL:CWindowImpl<drived, base>
{
public:
	BEGIN_MSG_MAP(base)
		//...
	END_MSG_MAP()
};

Answer 1

It's not clear what you are trying to do here.

Inheriting directly from CWindow and declaring a message map seems to be the problem. Remove the message map from class 'base" and according to the ATL documentation the BEGIN_MSG_MAP macro in class derived should reference derived, not base. Don't forget that other ATL Window classes inherit from CMessageMap which contains a virtual ProcessWindowMessage function.