IPersistStreamInitImpl Class
This class implements IUnknown and provides a default implementation of the IPersistStreamInit interface.
Important
This class and its members cannot be used in applications that execute in the Windows Runtime.
template<class T>
class ATL_NO_VTABLE IPersistStreamInitImpl
: public IPersistStreamInit
T
Your class, derived from IPersistStreamInitImpl.
| Name | Description |
|---|---|
| IPersistStreamInitImpl::GetClassID | Retrieves the object's CLSID. |
| IPersistStreamInitImpl::GetSizeMax | Retrieves the size of the stream needed to save the object's data. The ATL implementation returns E_NOTIMPL. |
| IPersistStreamInitImpl::InitNew | Initializes a newly created object. |
| IPersistStreamInitImpl::IsDirty | Checks whether the object's data has changed since it was last saved. |
| IPersistStreamInitImpl::Load | Loads the object's properties from the specified stream. |
| IPersistStreamInitImpl::Save | Saves the object's properties to the specified stream. |
The IPersistStreamInit interface allows a client to request that your object loads and saves its persistent data to a single stream. Class IPersistStreamInitImpl provides a default implementation of this interface and implements IUnknown by sending information to the dump device in debug builds.
Related Articles ATL Tutorial, Creating an ATL Project
IPersistStreamInit
IPersistStreamInitImpl
Header: atlcom.h
Retrieves the object's CLSID.
STDMETHOD(GetClassID)(CLSID* pClassID);
See IPersist::GetClassID in the Windows SDK.
Retrieves the size of the stream needed to save the object's data.
STDMETHOD(GetSizeMax)(ULARGE_INTEGER FAR* pcbSize);
Returns E_NOTIMPL.
See IPersistStreamInit::GetSizeMax in the Windows SDK.
Initializes a newly created object.
STDMETHOD(InitNew)();
See IPersistStreamInit::InitNew in the Windows SDK.
Checks whether the object's data has changed since it was last saved.
STDMETHOD(IsDirty)();
See IPersistStreamInit::IsDirty in the Windows SDK.
Loads the object's properties from the specified stream.
STDMETHOD(Load)(LPSTREAM pStm);
ATL uses the object's property map to retrieve this information.
See IPersistStreamInit::Load in the Windows SDK.
Saves the object's properties to the specified stream.
STDMETHOD(Save)(LPSTREAM pStm, BOOL fClearDirty);
ATL uses the object's property map to store this information.
See IPersistStreamInit::Save in the Windows SDK.