CAggDrawSurface::NonDelegatingQueryInterface

A version of this page is also available for

Windows Embedded CE 6.0 R3

4/8/2010

Retrieves an interface and increments the reference count.

Syntax

HRESULT NonDelegatingQueryInterface(
  REFIID riid,
  void** ppv
);

Parameters

• riid
  Reference identifier.

• ppv
  Pointer to the interface.

Return Value

Returns E_POINTER if ppv is invalid.

Returns NOERROR if the query is successful or E_NOINTERFACE if it is not.

Remarks

This member function provides an implementation of the INonDelegatingUnknown::NonDelegatingQueryInterface method.

By default it passes out references to IDirectDrawSurface and then calls the CUnknown::NonDelegatingQueryInterface member function for base class interface references.

Override this class to return interfaces added in the derived class.

Requirements