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IProvideClassInfo2Impl Class

  • Artikkeli

This class provides a default implementation of the IProvideClassInfo and IProvideClassInfo2 methods.

Syntax

template <const CLSID* pcoclsid,
    const IID* psrcid,
    const GUID* plibid = &CAtlModule::m_libid,
    WORD wMajor = 1,
    WORD wMinor = 0, class tihclass = CComTypeInfoHolder>
class ATL_NO_VTABLE IProvideClassInfo2Impl : public IProvideClassInfo2

Parameters

pcoclsid
A pointer to the coclass' identifier.

psrcid
A pointer to the identifier for the coclass' default outgoing dispinterface.

plibid
A pointer to the LIBID of the type library that contains information about the interface. By default, the server-level type library is passed.

wMajor
The major version of the type library. The default value is 1.

wMinor
The minor version of the type library. The default value is 0.

tihclass
The class used to manage the coclass' type information. The default value is CComTypeInfoHolder.

Members

Constructors

Name Description
IProvideClassInfo2Impl::IProvideClassInfo2Impl Constructor.

Public Methods

Name Description
IProvideClassInfo2Impl::GetClassInfo Retrieves an ITypeInfo pointer to the coclass' type information.
IProvideClassInfo2Impl::GetGUID Retrieves the GUID for the object's outgoing dispinterface.

Protected Data Members

Name Description
IProvideClassInfo2Impl::_tih Manages the type information for the coclass.

Remarks

The IProvideClassInfo2 interface extends IProvideClassInfo by adding the GetGUID method. This method allows a client to retrieve an object's outgoing interface IID for its default event set. Class IProvideClassInfo2Impl provides a default implementation of the IProvideClassInfo and IProvideClassInfo2 methods.

IProvideClassInfo2Impl contains a static member of type CComTypeInfoHolder that manages the type information for the coclass.

Inheritance Hierarchy

IProvideClassInfo2

IProvideClassInfo2Impl

Requirements

Header: atlcom.h

IProvideClassInfo2Impl::GetClassInfo

Retrieves an ITypeInfo pointer to the coclass' type information.

STDMETHOD(GetClassInfo)(ITypeInfo** pptinfo);

Remarks

See IProvideClassInfo::GetClassInfo in the Windows SDK.

IProvideClassInfo2Impl::GetGUID

Retrieves the GUID for the object's outgoing dispinterface.

STDMETHOD(GetGUID)(
    DWORD dwGuidKind,
    GUID* pGUID);

Remarks

See IProvideClassInfo2::GetGUID in the Windows SDK.

IProvideClassInfo2Impl::IProvideClassInfo2Impl

The constructor.

IProvideClassInfo2Impl();

Remarks

Calls AddRef on the _tih member. The destructor calls Release.

IProvideClassInfo2Impl::_tih

This static data member is an instance of the class template parameter, tihclass, which by default is CComTypeInfoHolder.

static  tihclass
    _tih;

Remarks

_tih manages the type information for the coclass.

See also

Class Overview