253 lines
7.2 KiB
C++
253 lines
7.2 KiB
C++
//+-------------------------------------------------------------------
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// File: ipersist.cxx
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//
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// Contents: IPersist and IPersistStorage methods of CPersistStorage class.
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//
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// Classes: CPersistStorage - IPersist, IPersistStorage implementations
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//
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// History: 7-Dec-92 DeanE Created
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//---------------------------------------------------------------------
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#include <pch.cxx>
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#pragma hdrstop
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#pragma optimize("",off)
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#include <persist.hxx>
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//+-------------------------------------------------------------------
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// Member: CPersistStorage::CPersistStorage()
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//
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// Synopsis: The constructor for CPersistStorage.
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//
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// Arguments: None
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//
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// History: 7-Dec-92 DeanE Created
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//--------------------------------------------------------------------
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CPersistStorage::CPersistStorage(CTestEmbed *pteObject)
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{
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_cRef = 1;
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_pteObject = pteObject;
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_fDirty = FALSE;
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}
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//+-------------------------------------------------------------------
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// Member: CPersistStorage::~CPersistStorage()
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//
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// Synopsis: The destructor for CPersistStorage.
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//
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// History: 7-Dec-92 DeanE Created
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//--------------------------------------------------------------------
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CPersistStorage::~CPersistStorage()
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{
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// _cRef should be 1
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if (1 != _cRef)
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{
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// BUGBUG - Log error, someone hasn't released
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}
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return;
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}
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//+-------------------------------------------------------------------
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// Method: CPersistStorage::QueryInterface
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//
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// Synopsis: Forward this to the object we're associated with
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//
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// Parameters: [iid] - Interface ID to return.
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// [ppv] - Pointer to pointer to object.
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//
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// Returns: S_OK if iid is supported, or E_NOINTERFACE if not.
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//
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// History: 7-Dec-92 DeanE Created
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//--------------------------------------------------------------------
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STDMETHODIMP CPersistStorage::QueryInterface(REFIID iid, void FAR * FAR *ppv)
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{
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return(_pteObject->QueryInterface(iid, ppv));
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}
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//+-------------------------------------------------------------------
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// Method: CPersistStorage::AddRef
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//
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// Synopsis: Forward this to the object we're associated with
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//
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// Returns: New reference count.
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//
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// History: 7-Dec-92 DeanE Created
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//--------------------------------------------------------------------
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STDMETHODIMP_(ULONG) CPersistStorage::AddRef(void)
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{
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++_cRef;
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return(_pteObject->AddRef());
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}
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//+-------------------------------------------------------------------
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// Method: CPersistStorage::Release
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//
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// Synopsis: Forward this to the object we're associated with
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//
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// Returns: New reference count.
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//
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// History: 7-Dec-92 DeanE Created
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//--------------------------------------------------------------------
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STDMETHODIMP_(ULONG) CPersistStorage::Release(void)
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{
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--_cRef;
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return(_pteObject->Release());
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}
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//+-------------------------------------------------------------------
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// Method: CPersistStorage::GetClassId
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//
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// Synopsis: See spec 2.00.09 p197. Answer the Class ID of this
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// object.
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//
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// Parameters: [pClassId] -
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//
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// Returns: S_OK
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//
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// History: 7-Dec-92 DeanE Created
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//--------------------------------------------------------------------
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STDMETHODIMP CPersistStorage::GetClassID(LPCLSID pClassId)
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{
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if (NULL != pClassId)
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{
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*pClassId = CLSID_TestEmbed;
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}
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return(S_OK);
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}
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//+-------------------------------------------------------------------
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// Method: CPersistStorage::IsDirty
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//
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// Synopsis: See spec 2.00.09 p200. Return S_OK if the object needs
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// to be saved in order to avoid data loss, or S_FALSE
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// if not.
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//
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// Parameters: None
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//
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// Returns: S_OK or S_FALSE
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//
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// History: 7-Dec-92 DeanE Created
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//--------------------------------------------------------------------
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STDMETHODIMP CPersistStorage::IsDirty()
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{
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// BUGBUG - NYI
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// Because we are NYI, just return S_FALSE
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return(S_FALSE);
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}
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//+-------------------------------------------------------------------
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// Method: CPersistStorage::InitNew
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//
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// Synopsis: See spec 2.00.09 p197. This method provides a way
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// for a container to provide persistent storage to this
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// object. Call AddRef on the pStg passed if we do save
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// it.
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//
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// Parameters: [pStg] - IStorage instance this object can use.
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//
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// Returns: S_OK
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//
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// History: 7-Dec-92 DeanE Created
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//--------------------------------------------------------------------
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STDMETHODIMP CPersistStorage::InitNew(LPSTORAGE pStg)
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{
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// BUGBUG - NYI
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return(S_OK);
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}
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//+-------------------------------------------------------------------
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// Method: CPersistStorage::Load
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//
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// Synopsis: See spec 2.00.09 p200. Called by handler to put this
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// object into the running state. Object should use the
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// pStg passed to "initialize" itself. We can hold onto
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// this pStg, but when ::Save is called, this can be
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// a different IStorage.
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//
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// Parameters: [pStg] - IStorage to initialize object from.
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//
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// Returns: S_OK?
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//
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// History: 7-Dec-92 DeanE Created
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//--------------------------------------------------------------------
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STDMETHODIMP CPersistStorage::Load(LPSTORAGE pStg)
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{
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// BUGBUG - NYI
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// Initialize the object here, though, just as if we had obtained
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// data from an IStorage
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return(S_OK);
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}
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//+-------------------------------------------------------------------
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// Method: CPersistStorage::Save
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//
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// Synopsis: See spec 2.00.09 p197. Save the data in the IStorage
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// passed. Ignore flags for now.
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//
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// Parameters: [pStgSave] - Save data in here.
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// [fSameAsLoad] - Indicates this object is the same one
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// that was initially started.
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// [fRemember] - Only matters if fSameAsLoad is FALSE.
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//
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// Returns: STG_E_MEDIUMFULL - why???
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//
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// History: 7-Dec-92 DeanE Created
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//--------------------------------------------------------------------
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STDMETHODIMP CPersistStorage::Save(
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LPSTORAGE pStgSave,
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BOOL fSameAsLoad)
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{
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// BUGBUG - NYI
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return(STG_E_MEDIUMFULL);
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}
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//+-------------------------------------------------------------------
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// Method: CPersistStorage::SaveCompleted
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//
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// Synopsis: See spec 2.00.09 p198. Used only in certain circumstances.
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//
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// Parameters: [pStgSaved] -
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//
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// Returns: S_OK
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//
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// History: 7-Dec-92 DeanE Created
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//--------------------------------------------------------------------
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STDMETHODIMP CPersistStorage::SaveCompleted(LPSTORAGE pStgSaved)
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{
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// BUGBUG - NYI
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// We don't have to worry about this unless we allow a "Save As"
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// operation
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return(S_OK);
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}
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//+-------------------------------------------------------------------
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// Method: CPersistStorage::HandsOffStorage
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//
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// Synopsis: See spec 2.00.09 p198. Used only in certain circumstances.
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//
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// Parameters: [pStgSaved] -
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//
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// Returns: S_OK
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//
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// History: 7-Dec-92 DeanE Created
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//--------------------------------------------------------------------
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STDMETHODIMP CPersistStorage::HandsOffStorage(void)
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{
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// BUGBUG - NYI
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// We don't have to worry about this unless we allow a "Save As"
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// operation
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return(S_OK);
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}
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