655 lines
15 KiB
C++
655 lines
15 KiB
C++
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//**********************************************************************
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// File name: ips.cpp
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//
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// Implementation file for the CSimpSvrApp Class
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//
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// Functions:
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//
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// See ips.h for a list of member functions.
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//
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// Copyright (c) 1993 Microsoft Corporation. All rights reserved.
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//**********************************************************************
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#include "pre.h"
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#include "obj.h"
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#include "ips.h"
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#include "app.h"
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#include "doc.h"
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DEFINE_GUID(GUID_SIMPLE, 0xBCF6D4A0, 0xBE8C, 0x1068, 0xB6, 0xD4, 0x00, 0xDD, 0x01, 0x0C, 0x05, 0x09);
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//**********************************************************************
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//
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// CPersistStorage::QueryInterface
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//
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// Purpose:
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// Used for interface negotiation
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//
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// Parameters:
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//
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// REFIID riid - Interface being queried for.
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//
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// LPVOID FAR *ppvObj - Out pointer for the interface.
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//
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// Return Value:
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//
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// S_OK - Success
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// E_NOINTERFACE - Failure
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//
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// Function Calls:
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// Function Location
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//
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// CSimpSvrObj::QueryInterface OBJ.CPP
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//
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//
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//********************************************************************
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STDMETHODIMP CPersistStorage::QueryInterface ( REFIID riid, LPVOID FAR* ppvObj)
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{
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TestDebugOut(TEXT("In CPersistStorage::QueryInterface\r\n"));
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// need to NULL the out parameter
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return m_lpObj->QueryInterface(riid, ppvObj);
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}
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//**********************************************************************
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//
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// CPersistStorage::AddRef
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//
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// Purpose:
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//
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// Increments the reference count on CSimpSvrObj. Since CPersistStorage
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// is a nested class of CSimpSvrObj, we don't need an extra reference
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// count for CPersistStorage. We can safely use the reference count of
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// CSimpSvrObj.
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//
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//
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// Parameters:
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//
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// None
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//
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// Return Value:
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//
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// The new reference count of CSimpSvrObj
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//
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// Function Calls:
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// Function Location
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//
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// OuputDebugString Windows API
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// CSimpSvrObj::AddRef OBJ.CPP
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//
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//
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//********************************************************************
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STDMETHODIMP_(ULONG) CPersistStorage::AddRef ()
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{
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TestDebugOut(TEXT("In CPersistStorage::AddRef\r\n"));
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return m_lpObj->AddRef();
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}
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//**********************************************************************
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//
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// CPersistStorage::Release
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//
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// Purpose:
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//
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// Decrements the reference count on CSimpSvrObj. Since CPersistStorage
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// is a nested class of CSimpSvrObj, we don't need an extra reference
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// count for CPersistStorage. We can safely use the reference count of
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// CSimpSvrObj.
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//
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// Parameters:
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//
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// None
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//
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// Return Value:
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//
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// The new reference count of CSimpSvrObj
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//
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// Function Calls:
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// Function Location
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//
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// TestDebugOut Windows API
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// CSimpSvrObj::Release OBJ.CPP
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//
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//
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//********************************************************************
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STDMETHODIMP_(ULONG) CPersistStorage::Release ()
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{
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TestDebugOut(TEXT("In CPersistStorage::Release\r\n"));
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return m_lpObj->Release();
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}
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//**********************************************************************
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//
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// CPersistStorage::InitNew
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//
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// Purpose:
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//
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// Used to give a new OLE object a ptr to its storage.
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//
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// Parameters:
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//
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// LPSTORAGE pStg - Pointer to the storage
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//
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// Return Value:
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// S_OK
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//
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// Function Calls:
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// Function Location
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//
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// TestDebugOut Windows API
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// IStorage::Release OLE
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// IStorage::AddRef OLE
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//
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//
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//********************************************************************
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STDMETHODIMP CPersistStorage::InitNew (LPSTORAGE pStg)
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{
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TestDebugOut(TEXT("In CPersistStorage::InitNew\r\n"));
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// release any streams and storages that may be open
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ReleaseStreamsAndStorage();
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m_lpObj->m_lpStorage = pStg;
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// AddRef the new Storage
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if (m_lpObj->m_lpStorage)
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m_lpObj->m_lpStorage->AddRef();
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CreateStreams(m_lpObj->m_lpStorage);
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return ResultFromScode(S_OK);
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}
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//**********************************************************************
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//
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// CPersistStorage::GetClassID
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//
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// Purpose:
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//
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// Returns the CLSID of this object.
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//
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// Parameters:
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//
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// LPCLSID lpClassID - Out ptr in which to return the CLSID
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//
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// Return Value:
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//
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// S_OK
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//
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// Function Calls:
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// Function Location
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//
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// TestDebugOut Windows API
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//
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//
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//********************************************************************
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STDMETHODIMP CPersistStorage::GetClassID ( LPCLSID lpClassID)
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{
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TestDebugOut(TEXT("In CPersistStorage::GetClassID\r\n"));
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*lpClassID = GUID_SIMPLE;
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return ResultFromScode( S_OK );
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}
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//**********************************************************************
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//
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// CPersistStorage::Save
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//
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// Purpose:
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//
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// Instructs the object to save itself into the storage.
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//
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// Parameters:
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//
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// LPSTORAGE pStgSave - Storage in which the object should be saved
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//
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// BOOL fSameAsLoad - TRUE if pStgSave is the same as the storage
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// that the object was originally created with.
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//
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// Return Value:
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//
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// S_OK
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//
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// Function Calls:
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// Function Location
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//
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// TestDebugOut Windows API
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// CPersistStorage::InitNew IPS.CPP
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// CSimpSvrObj::SaveToStorage OBJ.CPP
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//
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//
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// Comments:
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//
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// A real app will want better error checking in this method.
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//
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//********************************************************************
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STDMETHODIMP CPersistStorage::Save ( LPSTORAGE pStgSave, BOOL fSameAsLoad)
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{
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TestDebugOut(TEXT("In CPersistStorage::Save\r\n"));
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// save the data
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m_lpObj->SaveToStorage (pStgSave, fSameAsLoad);
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m_lpObj->m_fSaveWithSameAsLoad = fSameAsLoad;
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m_lpObj->m_fNoScribbleMode = TRUE;
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return ResultFromScode( S_OK );
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}
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//**********************************************************************
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//
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// CPersistStorage::SaveCompleted
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//
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// Purpose:
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//
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// Called when the container is finished saving the object
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//
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// Parameters:
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//
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// LPSTORAGE pStgNew - ptr to the new storage
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//
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// Return Value:
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//
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// S_OK
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//
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// Function Calls:
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// Function Location
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//
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// TestDebugOut Windows API
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//
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//
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//********************************************************************
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STDMETHODIMP CPersistStorage::SaveCompleted ( LPSTORAGE pStgNew)
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{
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TestDebugOut(TEXT("In CPersistStorage::SaveCompleted\r\n"));
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if (pStgNew)
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{
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ReleaseStreamsAndStorage();
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m_lpObj->m_lpStorage = pStgNew;
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m_lpObj->m_lpStorage->AddRef();
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OpenStreams(pStgNew);
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}
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/* OLE2NOTE: it is only legal to perform a Save or SaveAs operation
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** on an embedded object. if the document is a file-based document
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** then we can not be changed to a IStorage-base object.
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**
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** fSameAsLoad lpStgNew Type of Save Send OnSave
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** ---------------------------------------------------------
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** TRUE NULL SAVE YES
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** TRUE ! NULL SAVE * YES
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** FALSE ! NULL SAVE AS YES
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** FALSE NULL SAVE COPY AS NO
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**
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** * this is a strange case that is possible. it is inefficient
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** for the caller; it would be better to pass lpStgNew==NULL for
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** the Save operation.
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*/
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if ( pStgNew || m_lpObj->m_fSaveWithSameAsLoad)
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{
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if (m_lpObj->m_fNoScribbleMode)
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if (
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m_lpObj->GetOleAdviseHolder()->SendOnSave()!=S_OK
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// normally would clear a
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// dirty bit
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)
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TestDebugOut(TEXT("SendOnSave fails\n"));
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m_lpObj->m_fSaveWithSameAsLoad = FALSE;
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}
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m_lpObj->m_fNoScribbleMode = FALSE;
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return ResultFromScode( S_OK );
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}
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//**********************************************************************
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//
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// CPersistStorage::Load
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//
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// Purpose:
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//
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// Instructs the object to be loaded from storage.
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//
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// Parameters:
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//
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// LPSTORAGE pStg - Ptr to the storage in which to be loaded
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//
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// Return Value:
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//
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// S_OK
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//
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// Function Calls:
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// Function Location
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//
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// TestDebugOut Windows API
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// CSimpSvrObj::LoadFromStorage OBJ.CPP
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//
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//
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// Comments:
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//
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// A real app will want better error checking in this method.
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//
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//********************************************************************
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STDMETHODIMP CPersistStorage::Load ( LPSTORAGE pStg)
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{
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TestDebugOut(TEXT("In CPersistStorage::Load\r\n"));
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// remember the storage
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if (m_lpObj->m_lpStorage)
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{
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m_lpObj->m_lpStorage->Release();
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m_lpObj->m_lpStorage = NULL;
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}
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m_lpObj->m_lpStorage = pStg;
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m_lpObj->m_lpStorage->AddRef();
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OpenStreams(m_lpObj->m_lpStorage);
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m_lpObj->LoadFromStorage();
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return ResultFromScode( S_OK );
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}
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//**********************************************************************
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//
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// CPersistStorage::IsDirty
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//
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// Purpose:
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//
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// Returns whether or not the object is dirty w/respect to its
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// Storage
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//
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// Parameters:
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//
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// None
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//
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// Return Value:
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// S_OK
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//
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// Function Calls:
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// Function Location
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//
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// TestDebugOut Windows API
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//
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//
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// Comments:
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//
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// This sample does not implement this function, although a
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// real application should.
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//
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//********************************************************************
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STDMETHODIMP CPersistStorage::IsDirty()
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{
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TestDebugOut(TEXT("In CPersistStorage::IsDirty\r\n"));
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return ResultFromScode( S_OK );
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}
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//**********************************************************************
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//
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// CPersistStorage::HandsOffStorage
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//
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// Purpose:
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//
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// Forces the object to release its handle to its storage.
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//
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// Parameters:
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//
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// None
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//
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// Return Value:
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||
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//
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// S_OK
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//
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// Function Calls:
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||
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// Function Location
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//
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||
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// TestDebugOut Windows API
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||
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// IStorage::Release OLE
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//
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//********************************************************************
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||
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STDMETHODIMP CPersistStorage::HandsOffStorage ()
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{
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|
|
TestDebugOut(TEXT("In CPersistStorage::HandsOffStorage\r\n"));
|
||
|
|
|
||
|
|
ReleaseStreamsAndStorage();
|
||
|
|
|
||
|
|
return ResultFromScode( S_OK );
|
||
|
|
}
|
||
|
|
|
||
|
|
//**********************************************************************
|
||
|
|
//
|
||
|
|
// CPersistStorage::CreateStreams
|
||
|
|
//
|
||
|
|
// Purpose:
|
||
|
|
//
|
||
|
|
// Creates the streams that are held open for the object's lifetime.
|
||
|
|
//
|
||
|
|
// Parameters:
|
||
|
|
//
|
||
|
|
// LPSTORAGE lpStg - Storage in which to create the streams
|
||
|
|
//
|
||
|
|
// Return Value:
|
||
|
|
//
|
||
|
|
// none
|
||
|
|
//
|
||
|
|
// Function Calls:
|
||
|
|
// Function Location
|
||
|
|
//
|
||
|
|
// TestDebugOut Windows API
|
||
|
|
// IStorage::Release OLE
|
||
|
|
// IStream::Release OLE
|
||
|
|
// IStorage::CreateStream OLE
|
||
|
|
//
|
||
|
|
//
|
||
|
|
//********************************************************************
|
||
|
|
|
||
|
|
void CPersistStorage::CreateStreams(LPSTORAGE lpStg)
|
||
|
|
{
|
||
|
|
if (m_lpObj->m_lpColorStm)
|
||
|
|
m_lpObj->m_lpColorStm->Release();
|
||
|
|
|
||
|
|
if (m_lpObj->m_lpSizeStm)
|
||
|
|
m_lpObj->m_lpSizeStm->Release();
|
||
|
|
|
||
|
|
// create a stream to save the colors
|
||
|
|
if (
|
||
|
|
lpStg->CreateStream ( OLESTR("RGB"),
|
||
|
|
STGM_READWRITE | STGM_SHARE_EXCLUSIVE | STGM_CREATE,
|
||
|
|
0,
|
||
|
|
0,
|
||
|
|
&m_lpObj->m_lpColorStm)
|
||
|
|
!=S_OK
|
||
|
|
)
|
||
|
|
TestDebugOut(TEXT("CreateStreams fails\n"));
|
||
|
|
|
||
|
|
// create a stream to save the size
|
||
|
|
if (
|
||
|
|
lpStg->CreateStream ( OLESTR("size"),
|
||
|
|
STGM_READWRITE | STGM_SHARE_EXCLUSIVE | STGM_CREATE,
|
||
|
|
0,
|
||
|
|
0,
|
||
|
|
&m_lpObj->m_lpSizeStm)
|
||
|
|
!=S_OK
|
||
|
|
)
|
||
|
|
TestDebugOut(TEXT("CreateStreams fails\n"));
|
||
|
|
}
|
||
|
|
|
||
|
|
//**********************************************************************
|
||
|
|
//
|
||
|
|
// CPersistStorage::OpenStreams
|
||
|
|
//
|
||
|
|
// Purpose:
|
||
|
|
//
|
||
|
|
// Opens the streams in a storage.
|
||
|
|
//
|
||
|
|
// Parameters:
|
||
|
|
//
|
||
|
|
// LPSTORAGE lpStg - Storage in which to open the streams.
|
||
|
|
//
|
||
|
|
// Return Value:
|
||
|
|
//
|
||
|
|
// None
|
||
|
|
//
|
||
|
|
// Function Calls:
|
||
|
|
// Function Location
|
||
|
|
//
|
||
|
|
// TestDebugOut Windows API
|
||
|
|
// IStream::Release OLE
|
||
|
|
// IStorage::OpenStream OLE
|
||
|
|
//
|
||
|
|
//
|
||
|
|
//********************************************************************
|
||
|
|
|
||
|
|
void CPersistStorage::OpenStreams(LPSTORAGE lpStg)
|
||
|
|
{
|
||
|
|
if (m_lpObj->m_lpColorStm)
|
||
|
|
m_lpObj->m_lpColorStm->Release();
|
||
|
|
|
||
|
|
if (m_lpObj->m_lpSizeStm)
|
||
|
|
m_lpObj->m_lpSizeStm->Release();
|
||
|
|
|
||
|
|
// open the color stream
|
||
|
|
if (
|
||
|
|
lpStg->OpenStream ( OLESTR("RGB"),
|
||
|
|
0,
|
||
|
|
STGM_READWRITE | STGM_SHARE_EXCLUSIVE,
|
||
|
|
0,
|
||
|
|
&m_lpObj->m_lpColorStm)
|
||
|
|
!=S_OK
|
||
|
|
)
|
||
|
|
TestDebugOut(TEXT("OpenStream fails\n"));
|
||
|
|
|
||
|
|
|
||
|
|
// open the color stream
|
||
|
|
if (
|
||
|
|
lpStg->OpenStream ( OLESTR("size"),
|
||
|
|
0,
|
||
|
|
STGM_READWRITE | STGM_SHARE_EXCLUSIVE,
|
||
|
|
0,
|
||
|
|
&m_lpObj->m_lpSizeStm)
|
||
|
|
!=S_OK
|
||
|
|
)
|
||
|
|
TestDebugOut(TEXT("OpenStream fails\n"));
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
//**********************************************************************
|
||
|
|
//
|
||
|
|
// CPersistStorage::ReleaseStreamsAndStorage
|
||
|
|
//
|
||
|
|
// Purpose:
|
||
|
|
//
|
||
|
|
// Releases the stream and storage ptrs
|
||
|
|
//
|
||
|
|
// Parameters:
|
||
|
|
//
|
||
|
|
// None
|
||
|
|
//
|
||
|
|
// Return Value:
|
||
|
|
// None
|
||
|
|
//
|
||
|
|
// Function Calls:
|
||
|
|
// Function Location
|
||
|
|
//
|
||
|
|
// TestDebugOut Windows API
|
||
|
|
// IStream::Release OLE
|
||
|
|
// IStorage::Release OLE
|
||
|
|
//
|
||
|
|
//********************************************************************
|
||
|
|
|
||
|
|
void CPersistStorage::ReleaseStreamsAndStorage()
|
||
|
|
{
|
||
|
|
if (m_lpObj->m_lpColorStm)
|
||
|
|
{
|
||
|
|
m_lpObj->m_lpColorStm->Release();
|
||
|
|
m_lpObj->m_lpColorStm = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (m_lpObj->m_lpSizeStm)
|
||
|
|
{
|
||
|
|
m_lpObj->m_lpSizeStm->Release();
|
||
|
|
m_lpObj->m_lpSizeStm = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (m_lpObj->m_lpStorage)
|
||
|
|
{
|
||
|
|
m_lpObj->m_lpStorage->Release();
|
||
|
|
m_lpObj->m_lpStorage = NULL;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//**********************************************************************
|
||
|
|
//
|
||
|
|
// CPersistStorage::CreateStreams
|
||
|
|
//
|
||
|
|
// Purpose:
|
||
|
|
//
|
||
|
|
// Creates temporary streams in a storage.
|
||
|
|
//
|
||
|
|
// Parameters:
|
||
|
|
//
|
||
|
|
// LPSTORAGE lpStg - Pointer to the storage
|
||
|
|
//
|
||
|
|
// LPSTREAM FAR* lplpTempColor - Color Stream
|
||
|
|
//
|
||
|
|
// LPSTREAM FAR* lplpTempSize - Size Stream
|
||
|
|
//
|
||
|
|
// Return Value:
|
||
|
|
//
|
||
|
|
// None
|
||
|
|
//
|
||
|
|
// Function Calls:
|
||
|
|
// Function Location
|
||
|
|
//
|
||
|
|
// TestDebugOut Windows API
|
||
|
|
// IStorage::Release OLE
|
||
|
|
//
|
||
|
|
//
|
||
|
|
//********************************************************************
|
||
|
|
|
||
|
|
void CPersistStorage::CreateStreams(LPSTORAGE lpStg,
|
||
|
|
LPSTREAM FAR* lplpTempColor,
|
||
|
|
LPSTREAM FAR* lplpTempSize)
|
||
|
|
{
|
||
|
|
// create a stream to save the colors
|
||
|
|
if (
|
||
|
|
lpStg->CreateStream ( OLESTR("RGB"),
|
||
|
|
STGM_READWRITE | STGM_SHARE_EXCLUSIVE |
|
||
|
|
STGM_CREATE,
|
||
|
|
0,
|
||
|
|
0,
|
||
|
|
lplpTempColor)
|
||
|
|
!=S_OK
|
||
|
|
)
|
||
|
|
TestDebugOut(TEXT("CreateStreams fails\n"));
|
||
|
|
|
||
|
|
// create a stream to save the size
|
||
|
|
if (
|
||
|
|
lpStg->CreateStream ( OLESTR("size"),
|
||
|
|
STGM_READWRITE | STGM_SHARE_EXCLUSIVE |
|
||
|
|
STGM_CREATE,
|
||
|
|
0,
|
||
|
|
0,
|
||
|
|
lplpTempSize)
|
||
|
|
!=S_OK
|
||
|
|
)
|
||
|
|
TestDebugOut(TEXT("CreateStreams fails\n"));
|
||
|
|
}
|