www.gusucode.com > VC++ 实现类似QQ的RichEdit编辑器-源码程序 > VC++ 实现类似QQ的RichEdit编辑器-源码程序/code/RichText/OleRichEditCtrl.cpp
//Download by http://www.NewXing.com // OleRichEditCtrl.cpp : implementation file // #include "stdafx.h" #include "OleRichEditCtrl.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // COleRichEditCtrl COleRichEditCtrl::COleRichEditCtrl() { m_bCallbackSet = FALSE; } COleRichEditCtrl::~COleRichEditCtrl() { // IExRichEditOleCallback class is a reference-counted class // which deletes itself and for which delete should not be called // delete m_pIRichEditOleCallback; } BEGIN_MESSAGE_MAP(COleRichEditCtrl, CRichEditCtrl) //{{AFX_MSG_MAP(COleRichEditCtrl) ON_WM_CREATE() //}}AFX_MSG_MAP END_MESSAGE_MAP() int COleRichEditCtrl::OnCreate(LPCREATESTRUCT lpCreateStruct) { if (CRichEditCtrl::OnCreate(lpCreateStruct) == -1) return -1; // m_pIRichEditOleCallback should have been created in PreSubclassWindow ASSERT( m_pIRichEditOleCallback != NULL ); // set the IExRichEditOleCallback pointer if it wasn't set // successfully in PreSubclassWindow if ( !m_bCallbackSet ) { SetOLECallback( m_pIRichEditOleCallback ); } return 0; } void COleRichEditCtrl::PreSubclassWindow() { // base class first CRichEditCtrl::PreSubclassWindow(); m_pIRichEditOleCallback = NULL; m_pIRichEditOleCallback = new IExRichEditOleCallback; ASSERT( m_pIRichEditOleCallback != NULL ); m_bCallbackSet = SetOLECallback( m_pIRichEditOleCallback ); } long COleRichEditCtrl::StreamInFromResource(int iRes, LPCTSTR sType) { HINSTANCE hInst = AfxGetInstanceHandle(); HRSRC hRsrc = ::FindResource(hInst, MAKEINTRESOURCE(iRes), sType); DWORD len = SizeofResource(hInst, hRsrc); BYTE* lpRsrc = (BYTE*)LoadResource(hInst, hRsrc); ASSERT(lpRsrc); CMemFile mfile; mfile.Attach(lpRsrc, len); EDITSTREAM es; es.pfnCallback = readFunction; es.dwError = 0; es.dwCookie = (DWORD) &mfile; return StreamIn( SF_RTF, es ); } /* static */ DWORD CALLBACK COleRichEditCtrl::readFunction(DWORD dwCookie, LPBYTE lpBuf, // the buffer to fill LONG nCount, // number of bytes to read LONG* nRead) // number of bytes actually read { CFile* fp = (CFile *)dwCookie; *nRead = fp->Read(lpBuf,nCount); return 0; } ///////////////////////////////////////////////////////////////////////////// COleRichEditCtrl::IExRichEditOleCallback::IExRichEditOleCallback() { pStorage = NULL; m_iNumStorages = 0; m_dwRef = 0; // set up OLE storage HRESULT hResult = ::StgCreateDocfile(NULL, STGM_TRANSACTED | STGM_READWRITE | STGM_SHARE_EXCLUSIVE /*| STGM_DELETEONRELEASE */|STGM_CREATE , 0, &pStorage ); if ( pStorage == NULL || hResult != S_OK ) { AfxThrowOleException( hResult ); } } COleRichEditCtrl::IExRichEditOleCallback::~IExRichEditOleCallback() { } HRESULT STDMETHODCALLTYPE COleRichEditCtrl::IExRichEditOleCallback::GetNewStorage(LPSTORAGE* lplpstg) { m_iNumStorages++; WCHAR tName[50]; swprintf(tName, L"REOLEStorage%d", m_iNumStorages); HRESULT hResult = pStorage->CreateStorage(tName, STGM_TRANSACTED | STGM_READWRITE | STGM_SHARE_EXCLUSIVE | STGM_CREATE , 0, 0, lplpstg ); if (hResult != S_OK ) { ::AfxThrowOleException( hResult ); } return hResult; } HRESULT STDMETHODCALLTYPE COleRichEditCtrl::IExRichEditOleCallback::QueryInterface(REFIID iid, void ** ppvObject) { HRESULT hr = S_OK; *ppvObject = NULL; if ( iid == IID_IUnknown || iid == IID_IRichEditOleCallback ) { *ppvObject = this; AddRef(); hr = NOERROR; } else { hr = E_NOINTERFACE; } return hr; } ULONG STDMETHODCALLTYPE COleRichEditCtrl::IExRichEditOleCallback::AddRef() { return ++m_dwRef; } ULONG STDMETHODCALLTYPE COleRichEditCtrl::IExRichEditOleCallback::Release() { if ( --m_dwRef == 0 ) { delete this; return 0; } return m_dwRef; } HRESULT STDMETHODCALLTYPE COleRichEditCtrl::IExRichEditOleCallback::GetInPlaceContext(LPOLEINPLACEFRAME FAR *lplpFrame, LPOLEINPLACEUIWINDOW FAR *lplpDoc, LPOLEINPLACEFRAMEINFO lpFrameInfo) { return S_OK; } HRESULT STDMETHODCALLTYPE COleRichEditCtrl::IExRichEditOleCallback::ShowContainerUI(BOOL fShow) { return S_OK; } HRESULT STDMETHODCALLTYPE COleRichEditCtrl::IExRichEditOleCallback::QueryInsertObject(LPCLSID lpclsid, LPSTORAGE lpstg, LONG cp) { return S_OK; } HRESULT STDMETHODCALLTYPE COleRichEditCtrl::IExRichEditOleCallback::DeleteObject(LPOLEOBJECT lpoleobj) { return S_OK; } HRESULT STDMETHODCALLTYPE COleRichEditCtrl::IExRichEditOleCallback::QueryAcceptData(LPDATAOBJECT lpdataobj, CLIPFORMAT FAR *lpcfFormat, DWORD reco, BOOL fReally, HGLOBAL hMetaPict) { return S_OK; } HRESULT STDMETHODCALLTYPE COleRichEditCtrl::IExRichEditOleCallback::ContextSensitiveHelp(BOOL fEnterMode) { return S_OK; } HRESULT STDMETHODCALLTYPE COleRichEditCtrl::IExRichEditOleCallback::GetClipboardData(CHARRANGE FAR *lpchrg, DWORD reco, LPDATAOBJECT FAR *lplpdataobj) { return S_OK; } HRESULT STDMETHODCALLTYPE COleRichEditCtrl::IExRichEditOleCallback::GetDragDropEffect(BOOL fDrag, DWORD grfKeyState, LPDWORD pdwEffect) { return S_OK; } HRESULT STDMETHODCALLTYPE COleRichEditCtrl::IExRichEditOleCallback::GetContextMenu(WORD seltyp, LPOLEOBJECT lpoleobj, CHARRANGE FAR *lpchrg, HMENU FAR *lphmenu) { return S_OK; }