CComPtrBase::QueryInterface

Call this method to return a pointer to a specified interface.

template <
   class Q
> HRESULT QueryInterface(Q** pp ) const throw( );

Parameters

• Q
  The object type whose interface pointer is required.

• pp
  Address of output variable that receives the requested interface pointer.

Return Value

Returns S_OK on success, or E_NOINTERFACE on failure.

Remarks

This method calls IUnknown::QueryInterface.

In debug builds, an assertion error will occur if pp is not equal to NULL.

Requirements

Header: atlcomcli.h

See Also

Concepts

CComPtrBase Class

CComPtrBase Members

CComPtrBase::SetSite