C++ ATLTRY函数代码示例

///////////////////////////////////////////////////////////////////////////////
// ein neues Objekt zum Baum hinzufügen
bool CSpatialTreeNode::AddTile(CPgrTile *pTile, int nMaxDepth)
{
// If there are subnodes, then consider wether this object
// will fit in them.
	if (nMaxDepth > 1 && m_nSubNodes > 0) {
		for (int i = 0; i < m_nSubNodes; ++i) {
			_ASSERTE(NULL != m_apsSubNode[i]);
			if (m_apsSubNode[i] -> CheckObjectContained(pTile)) 
				return m_apsSubNode[i] -> AddTile(pTile, nMaxDepth - 1);
		}
	}
	else if (nMaxDepth > 1 && 0 == m_nSubNodes)	{
	// Otherwise, consider creating four subnodes if could fit into	
	// them, and adding to the appropriate subnode.
	double adfBoundsMinH1[SPATIALTREE_DIMENSION], adfBoundsMaxH1[SPATIALTREE_DIMENSION];
	double adfBoundsMinH2[SPATIALTREE_DIMENSION], adfBoundsMaxH2[SPATIALTREE_DIMENSION];
	double adfBoundsMin1[SPATIALTREE_DIMENSION], adfBoundsMax1[SPATIALTREE_DIMENSION];
	double adfBoundsMin2[SPATIALTREE_DIMENSION], adfBoundsMax2[SPATIALTREE_DIMENSION];
	double adfBoundsMin3[SPATIALTREE_DIMENSION], adfBoundsMax3[SPATIALTREE_DIMENSION];
	double adfBoundsMin4[SPATIALTREE_DIMENSION], adfBoundsMax4[SPATIALTREE_DIMENSION];

		SplitBounds(m_dBoundsMin, m_dBoundsMax, adfBoundsMinH1, adfBoundsMaxH1, adfBoundsMinH2, adfBoundsMaxH2);
		SplitBounds(adfBoundsMinH1, adfBoundsMaxH1, adfBoundsMin1, adfBoundsMax1, adfBoundsMin2, adfBoundsMax2);
		SplitBounds(adfBoundsMinH2, adfBoundsMaxH2, adfBoundsMin3, adfBoundsMax3, adfBoundsMin4, adfBoundsMax4);

		if (CheckObjectContained(pTile, adfBoundsMin1, adfBoundsMax1) ||
			CheckObjectContained(pTile, adfBoundsMin2, adfBoundsMax2) ||
			CheckObjectContained(pTile, adfBoundsMin3, adfBoundsMax3) ||
			CheckObjectContained(pTile, adfBoundsMin4, adfBoundsMax4))
		{
			m_nSubNodes = 4;
			ATLTRY((
				m_apsSubNode[0] = new CSpatialTreeNode(adfBoundsMin1, adfBoundsMax1),
				m_apsSubNode[1] = new CSpatialTreeNode(adfBoundsMin2, adfBoundsMax2),
				m_apsSubNode[2] = new CSpatialTreeNode(adfBoundsMin3, adfBoundsMax3),
				m_apsSubNode[3] = new CSpatialTreeNode(adfBoundsMin4, adfBoundsMax4)
			));

		// recurse back on this node now that it has subnodes
			return AddTile(pTile, nMaxDepth);
		}
	}

// If none of that worked, just add it to this nodes list.
	++m_nFeatureCount;

CPgrTile * *pFeatureIds = SfRealloc(m_pFeatureIds, sizeof(CPgrTile *) * m_nFeatureCount);

	if (NULL != pFeatureIds) {
		m_pFeatureIds =	pFeatureIds;
		ATLTRY(m_pFeatureIds[m_nFeatureCount - 1] = new CPgrTile(*pTile));
		return true;
	}
	return false;
}

///////////////////////////////////////////////////////////////////////////////
// Objektgeometrie besorgen 
bool CObjGeometrie::FInit (bool fStatisticsOnly)
{
// Statistik anfordern
	if (!DEX_GetObjStatistik (*this))
		return false;

	if (fStatisticsOnly)
		return true;

// Felder anfordern
	ATLTRY(pdblX = new double [lCnt]);
	ATLTRY(pdblY = new double [lCnt]);
	if (pdblX == NULL || pdblY == NULL) 
		return false;
		
	if (iKCnt > 0) {
		if (iObjTyp == OGFlaeche) {
			ATLTRY(plCnt = new long [iKCnt]);
			if (plCnt == NULL) 
				return false;
		} 
		else if (iObjTyp == OGText) {
			((TEXTGEOMETRIE &)*this).pText = new char [iKCnt+1];
			if (((TEXTGEOMETRIE &)*this).pText == NULL) 
				return false;
		}
	}

// Geometrie holen
	iFlags |= OGConverted;
	if (!DEX_GetObjGeometrie (*this)) 
		return false;

// bei Linien/Flächen vergleichbare Position herstellen
bool fResult = true;

	if (OGFlaeche == iObjTyp)
	{
		fResult = AdjustAreaGeometry();
		fResult &= AdjustIslands();	// Inseln sortieren
	}
	else if (OGLinie == iObjTyp)
		fResult = AdjustLineGeometry();

// Hashwerte berechnen
	if (1.0 == m_dKoeff) {
		m_lXHash = HashKoords(&X(0), lCnt*sizeof(double));
		m_lYHash = HashKoords(&Y(0), lCnt*sizeof(double));
	}
	else {
		m_lXHash = HashKoordsTolerance(&X(0), lCnt, m_dKoeff);
		m_lYHash = HashKoordsTolerance(&Y(0), lCnt, m_dKoeff);
	}
	return fResult;
}

void CComSafeArray::Create(VARTYPE vtSrc, DWORD dwDims, SAFEARRAYBOUND *rgsabound)
{
	ATLASSERT(dwDims > 0);
	ATLASSERT(rgsabound != NULL);

	// Validate the VARTYPE for SafeArrayCreate call
	ATLASSERT( !(vtSrc & VT_ARRAY) );
	ATLASSERT( !(vtSrc & VT_BYREF) );
	ATLASSERT( !(vtSrc & VT_VECTOR) );
	ATLASSERT(vtSrc != VT_EMPTY);
	ATLASSERT(vtSrc != VT_NULL);

	// Free up old safe array if necessary
	Clear();

	ATLTRY( parray = ::SafeArrayCreate(vtSrc, dwDims, rgsabound) );

	if (parray == NULL) {
		ATLTRACE2(atlTraceDBProvider, 0, "CComSafeArray::Create Error : OOM\n");
		return;
	}

	vt				= unsigned short (vtSrc | VT_ARRAY);
	m_dwDims		= dwDims;
	m_dwElementSize = GetElemSize();
}

/**************************************************************************
*  IDataObject_Constructor
*/
HRESULT IDataObject_Constructor(HWND hwndOwner, LPCITEMIDLIST pMyPidl, LPCITEMIDLIST * apidl, UINT cidl, IDataObject **dataObject)
{
    CComObject<IDataObjectImpl>                *theDataObject;
    CComPtr<IDataObject>                    result;
    HRESULT                                    hResult;

    if (dataObject == NULL)
        return E_POINTER;
    *dataObject = NULL;
    ATLTRY (theDataObject = new CComObject<IDataObjectImpl>);
    if (theDataObject == NULL)
        return E_OUTOFMEMORY;
    hResult = theDataObject->QueryInterface (IID_IDataObject, (void **)&result);
    if (FAILED (hResult))
    {
        delete theDataObject;
        return hResult;
    }
    hResult = theDataObject->Initialize (hwndOwner, pMyPidl, apidl, cidl);
    if (FAILED (hResult))
        return hResult;
    *dataObject = result.Detach ();
    TRACE("(%p)->(apidl=%p cidl=%u)\n", *dataObject,  apidl, cidl);
    return S_OK;
}

HRESULT IEnumFORMATETC_Constructor(UINT cfmt, const FORMATETC afmt[], IEnumFORMATETC **enumerator)
{
    CComObject<IEnumFORMATETCImpl>            *theEnumerator;
    CComPtr<IEnumFORMATETC>                    result;
    HRESULT                                    hResult;

    if (enumerator == NULL)
        return E_POINTER;
    *enumerator = NULL;
    ATLTRY (theEnumerator = new CComObject<IEnumFORMATETCImpl>);
    if (theEnumerator == NULL)
        return E_OUTOFMEMORY;
    hResult = theEnumerator->QueryInterface (IID_IEnumFORMATETC, (void **)&result);
    if (FAILED (hResult))
    {
        delete theEnumerator;
        return hResult;
    }
    hResult = theEnumerator->Initialize (cfmt, afmt);
    if (FAILED (hResult))
        return hResult;
    *enumerator = result.Detach ();
    TRACE("(%p)->(%u,%p)\n", *enumerator, cfmt, afmt);
    return S_OK;
}

/**************************************************************************
*        CFontsFolder::EnumObjects
*/
HRESULT WINAPI CFontsFolder::EnumObjects(HWND hwndOwner, DWORD dwFlags, LPENUMIDLIST *ppEnumIDList)
{
    CComObject<CDesktopFolderEnumZ>            *theEnumerator;
    CComPtr<IEnumIDList>                    result;
    HRESULT                                    hResult;

    TRACE ("(%p)->(HWND=%p flags=0x%08x pplist=%p)\n", this, hwndOwner, dwFlags, ppEnumIDList);

    if (ppEnumIDList == NULL)
        return E_POINTER;
    *ppEnumIDList = NULL;
    ATLTRY (theEnumerator = new CComObject<CDesktopFolderEnumZ>);
    if (theEnumerator == NULL)
        return E_OUTOFMEMORY;
    hResult = theEnumerator->QueryInterface(IID_PPV_ARG(IEnumIDList, &result));
    if (FAILED (hResult))
    {
        delete theEnumerator;
        return hResult;
    }
    hResult = theEnumerator->Initialize (dwFlags);
    if (FAILED (hResult))
        return hResult;
    *ppEnumIDList = result.Detach ();

    TRACE ("-- (%p)->(new ID List: %p)\n", this, *ppEnumIDList);

    return S_OK;
}

///////////////////////////////////////////////////////////////////////////////
// Geometriebaum (Quadtree)
BOOL CSpatialTree::Init (long lTileCnt, double *padfBoundsMin, 
		double *padfBoundsMax, int nMaxDepth)
{
	DELETE_OBJ(m_psRoot);

	_ASSERTE(NULL != padfBoundsMin && NULL != padfBoundsMax);

// If no max depth was defined, try to select a reasonable one
// that implies approximately 8 shapes per node.
	if (0 == nMaxDepth) {
	int nMaxNodeCount = 1;

		while (4 * nMaxNodeCount < lTileCnt)
		{
			++nMaxDepth;
			nMaxNodeCount = 2 * nMaxNodeCount;
		}
	}
	m_nMaxDepth = nMaxDepth;

// Allocate the root node.

// Assign the bounds to the root node. If none are passed in,
// use the bounds of the provided file otherwise the create
// function will have already set the bounds.
	ATLTRY(m_psRoot = new CSpatialTreeNode(padfBoundsMin, padfBoundsMax));
	return (NULL != m_psRoot) ? TRUE : FALSE;
}

    EShellTreeItem _InsertItem(IShellFolder* pFolder, LPCITEMIDLIST pidlPath, LPCITEMIDLIST pidlNode,
        DWORD dwAttribs, EShellTreeItem tiParent)
    {
        ATLASSERT(pFolder);
        ATLASSERT(pidlPath);

        // Create PARAM data
        PSHELLITEMINFO pItem;
        ATLTRY(pItem = new SHELLITEMINFO);
        ATLASSERT(pItem);
        pItem->pidlFull.Copy( pidlPath );
        pItem->pidlFull.Concatenate( pidlNode );
        pItem->pidlNode.Copy( pidlNode );
        pItem->spFolder = pFolder;
        pItem->dwAttribs = dwAttribs;

        SHFILEINFO sfi;
        if( ::SHGetFileInfo((LPCTSTR)(LPCITEMIDLIST)pItem->pidlFull, 0, &sfi, sizeof(sfi),
            SHGFI_PIDL | SHGFI_DISPLAYNAME | SHGFI_SYSICONINDEX 
            | SHGFI_SMALLICON | SHGFI_LINKOVERLAY) ) 
        {
           return AppendItem(tiParent, sfi.szDisplayName, sfi.iIcon, pItem);
        }
        return NULL;
    }

CKeyClass::CKeyClass(
    CHKey& hk)
    : m_ptszClass(NULL),
      m_lErr(ERROR_SUCCESS)
{
    DWORD ctc = 0;

    if (! hk.QueryInfoKey(NULL, &ctc, NULL, NULL, NULL, 
                          NULL, NULL, NULL, NULL, NULL))
    {
        m_lErr = hk.Error();
    }
    else
    {
        ATLTRY(m_ptszClass = new TCHAR [++ctc]);
        if (m_ptszClass == NULL)
        {
            m_lErr = ERROR_OUTOFMEMORY;
            return;
        }

        *m_ptszClass = _T('\0');

        if (! hk.QueryInfoKey(m_ptszClass, &ctc, NULL, NULL, NULL, 
                              NULL, NULL, NULL, NULL, NULL))
        {
            delete [] m_ptszClass;
            m_ptszClass= NULL;
            m_lErr = hk.Error();
        }
    }
}

bool CPEDebug::Initialize()
{
	if (m_fIsInitialized)
		return true;				// nur einmal initialisieren
	else if (m_fTriedToInitialize)
		return false;				// schon mal versucht, jedoch fehlgeschlagen
	m_fTriedToInitialize = true;

// Since the largest symbol that the MS code generators can handle
//  is 256 that is all that is needed.
	ATLTRY(m_pSymbol = (IMAGEHLP_SYMBOL *)new BYTE [sizeof(IMAGEHLP_SYMBOL) + 256]);
	if (NULL == m_pSymbol) return false;

// SymbolEngine initialisieren
	if (m_SymEngine.SymInitialize (GetCurrentProcess(), NULL, TRUE)) {
    //  Set the symbol engine to load line information.  This must be
    //  because the symbol engine does not load source-lines by default.
    //  I also turn on the OMAP lookups so that the super-special OMAP
    //  moved blocks will get looked at as well.  Trust me, don't ask.
	    SymSetOptions (SymGetOptions() | SYMOPT_LOAD_LINES | SYMOPT_OMAP_FIND_NEAREST);
		m_fIsInitialized = true;
		return true;
	}
	return false;
}

COledbDatabase::COledbDatabase() : 
   m_pSystem(NULL)
{
   ATLTRY(m_pErrors = new COledbErrors);
#ifdef _DEBUG
   m_nRecordsets = 0;
#endif
}

bool CIdentsDBExtension::ExportDataSourceAsXml (LPUNKNOWN pIUnk, HPROJECT hPr, LPCSTR pFName, ULONG &rulCnt) 
{
	if (pIUnk) LPPROGRESSINDICATOR(pIUnk) -> ChangeText (PIFLAG_FILENAME, pFName);

// Datei bilden, wenn diese noch nicht existiert
int fh = _lcreat (pFName, 0);

	if (fh < 0) return false;

bool fRet = false;

	{
	// hier geht's los
	CXMLDocument Doc (fh);		// <?xml ...?>

	char cbBuffer[80];			// TRiAS Version, aktuelle Zeit 
	os_time_and_date now;
	string resVersion (g_cbTRiAS);
	ResString resTempl (IDS_SIGNONVERSION_MODAL, _MAX_PATH);
	
		resVersion += ": ";
		resVersion += resTempl;
	
		ATLTRY(now = os_time_and_date::now());
		strcpy (cbBuffer, resVersion.c_str());
		strcat (cbBuffer, now.to_string(" %e. %B %Y, %T").c_str());
	
		CXMLComment (fh, cbBuffer);
		CXMLComment (fh, ResString (IDS_COPYRIGHT, 100));	// allgemeines Copyright

	// DTD einfügen
		CXMLRawData (fh, s_cbDTD);

	// die eigentlichen Infos ausgeben
	CXMLAttribute Attr ("Version", "1.0");
	CXMLNode MainNode (fh, g_cbTRiASMetadata, Attr);

	ENUMLONGKEY ELK;
	EXPORTDATA ED;

		ED.fh = fh;
		ED.pIUnk = pIUnk;
		ED.ulCnt = rulCnt;

		ELK.eKey = 'i';
		ELK.eFcn = (ENUMLONGKEYPROC)ExportIdentEntryAsXml;
		ELK.ePtr = &ED;
		fRet = DEX_EnumPBDDataEx (hPr, ELK);
		rulCnt = ED.ulCnt;
	}

// Datei wieder schließen
	_lclose (fh);		// Datei schließen
	return fRet;
}

CFindReplaceDlg *CFindReplaceDlg :: CreateInstance ()
{
CFindReplaceDlg *pCFindReplaceDlg = NULL;

	ATLTRY(pCFindReplaceDlg = new CFindReplaceDlg());
	if(pCFindReplaceDlg == NULL || !pCFindReplaceDlg -> FInit () ) {
		if (pCFindReplaceDlg) delete pCFindReplaceDlg;
		return NULL;
	}
	return pCFindReplaceDlg;
}

CTRiASDocTemplate::CTRiASDocTemplate(UINT nIDResource,
	CRuntimeClass* pDocClass, CRuntimeClass* pFrameClass,
	CRuntimeClass* pViewClass)
		: CSingleDocTemplate(nIDResource, pDocClass, pFrameClass, pViewClass)
{
// Zeichenketten korrigieren
	if (m_strDocStrings.IsEmpty())
		m_strDocStrings.LoadString(nIDResource);
	
	ATLTRY(m_strDocStrings = FakeTRiASName (
					m_strDocStrings, g_cbTRiAS, g_cbTRiAS, g_cbTRiAS,
					g_cbRiw, g_cbRiw, g_cbTRiAS).c_str());
}

void CSketcherDoc::SetSearchContent(const CString& value)
{
    if (value.IsEmpty()) {
        RemoveChunk(PKEY_Search_Contents.fmtid, PKEY_Search_Contents.pid);
    } else {
        CMFCFilterChunkValueImpl *pChunk = NULL;
        ATLTRY(pChunk = new CMFCFilterChunkValueImpl);
        if (pChunk != NULL) {
            pChunk->SetTextValue(PKEY_Search_Contents, value, CHUNK_TEXT);
            SetChunkValue(pChunk);
        }
    }
}