C++ (Cpp) _AfxOleGetObjectDescriptorData Examples

Example #1

File: olesvr2.cpp Project: rickerliang/OpenNT

void COleServerItem::GetObjectDescriptorData(
	LPPOINT lpOffset, LPSIZE lpSize, LPSTGMEDIUM lpStgMedium)
{
	ASSERT_VALID(this);
	ASSERT(AfxIsValidAddress(lpStgMedium, sizeof(STGMEDIUM)));
	ASSERT(lpOffset == NULL ||
		AfxIsValidAddress(lpOffset, sizeof(POINT), FALSE));

	LPOLEOBJECT lpOleObject = GetOleObject();
	ASSERT(lpOleObject != NULL);

	// get the object descriptor for the IOleObject
	POINTL pointl = { 0, 0 };
	if (lpOffset != NULL)
	{
		CSize ptOffset(lpOffset->x, lpOffset->y);
#ifndef _MAC
		((CDC*)NULL)->DPtoHIMETRIC(&ptOffset);
#endif
		pointl.x = ptOffset.cx;
		pointl.y = ptOffset.cy;
	}
	SIZEL sizel;
	if (lpSize != NULL)
	{
		sizel.cx = lpSize->cx;
		sizel.cy = lpSize->cy;
#ifndef _MAC
		((CDC*)NULL)->DPtoHIMETRIC(&sizel);
#endif
	}
	else
	{
		sizel.cx = 0;
		sizel.cy = 0;
	}

	InterlockedIncrement(&m_dwRef);  // protect against destruction during this call
	HGLOBAL hGlobal = _AfxOleGetObjectDescriptorData(
		lpOleObject, NULL, DVASPECT_CONTENT, pointl, &sizel);
	InterlockedDecrement(&m_dwRef);

	if (hGlobal == NULL)
		AfxThrowMemoryException();

	// setup the STGMEDIUM
	lpStgMedium->tymed = TYMED_HGLOBAL;
	lpStgMedium->hGlobal = hGlobal;
	lpStgMedium->pUnkForRelease = NULL;
}

Example #2

File: olemisc.cpp Project: Rupan/winscp

HGLOBAL AFXAPI _AfxOleGetObjectDescriptorData(
	LPOLEOBJECT     lpOleObj,
	LPCOLESTR       lpszSrcOfCopy,
	DWORD           dwDrawAspect,
	POINTL          pointl,
	LPSIZEL         lpSizelHim)
{
	USES_CONVERSION;

	CLSID           clsid;
	LPOLESTR        lpszFullUserTypeName = NULL;
	LPMONIKER       lpSrcMonikerOfCopy = NULL;
	HGLOBAL         hObjDesc = NULL;
	IBindCtx        *pbc = NULL;
	SCODE           sc;
	SIZEL           sizelHim;
	BOOL            bFreeSrcOfCopy = FALSE;
	LPVIEWOBJECT2   lpViewObj2;
	LPOLELINK       lpOleLink;
	BOOL            fIsLink;
	TCHAR           szLinkedTypeFmt[80];
	LPCOLESTR       lpszLinkedTypeFmt;
	LPOLESTR        lpszBuf = NULL;
	DWORD           dwStatus = 0;

	// query for IOleLink
	lpOleLink = QUERYINTERFACE(lpOleObj, IOleLink);
	fIsLink = lpOleLink != NULL;

	// query for IViewObject2
	lpViewObj2 = QUERYINTERFACE(lpOleObj, IViewObject2);

	// Get CLSID
	sc = lpOleObj->GetUserClassID(&clsid);
	if (sc != S_OK)
		clsid = CLSID_NULL;

	// Get FullUserTypeName
	sc = lpOleObj->GetUserType(USERCLASSTYPE_FULL, &lpszFullUserTypeName);

	// if object is a link, then expand usertypename to be "Linked %s"
	if (fIsLink && lpszFullUserTypeName != NULL)
	{
		// Note: If this LoadString call fails, it is likely that
		//  _AFX_NO_OLE_RESOURCES is defined in your .RC file.
		// To correct the situation remove the following line from your
		//  resource script:
		//      #define _AFX_NO_OLE_RESOURCES
		// This should be done using the Resource.Set Includes... command.

		VERIFY(AfxLoadString(AFX_IDS_PASTELINKEDTYPE, szLinkedTypeFmt));
		lpszLinkedTypeFmt = T2COLE(szLinkedTypeFmt);
		lpszBuf = (LPOLESTR)CoTaskMemAlloc((ocslen(lpszFullUserTypeName) +
			ocslen(lpszLinkedTypeFmt) + 1) * sizeof(OLECHAR));
		if (lpszBuf != NULL)
		{
#ifdef OLE2ANSI
			sprintf(lpszBuf, lpszLinkedTypeFmt, lpszFullUserTypeName);
#else
			swprintf(lpszBuf, lpszLinkedTypeFmt, lpszFullUserTypeName);
#endif
			CoTaskMemFree(lpszFullUserTypeName);
			lpszFullUserTypeName = lpszBuf;
		}
	}

	// get source of copy
	if (fIsLink)
	{
		sc = lpOleLink->GetSourceDisplayName((LPOLESTR*)&lpszSrcOfCopy);
		bFreeSrcOfCopy = TRUE;
	}
	else if (lpszSrcOfCopy == NULL)
	{
		sc = lpOleObj->GetMoniker(
			OLEGETMONIKER_TEMPFORUSER, OLEWHICHMK_OBJFULL, &lpSrcMonikerOfCopy);
		if (sc == S_OK)
		{
			CreateBindCtx(0, &pbc);
			lpSrcMonikerOfCopy->GetDisplayName(pbc, NULL,
				(LPOLESTR*)&lpszSrcOfCopy);
			RELEASE(pbc);
			bFreeSrcOfCopy = TRUE;
		}
	}

	if (lpSizelHim)
	{
		// Use extents passed by the caller
		sizelHim = *lpSizelHim;
	}
	else if (lpViewObj2)
	{
		// Get the current extents from the object
		sc = lpViewObj2->GetExtent(dwDrawAspect, -1, NULL,
			(LPSIZEL)&sizelHim);
		if (sc != S_OK)
			sizelHim.cx = sizelHim.cy = 0;
	}
	else
	{
		sizelHim.cx = sizelHim.cy = 0;
	}

	// Get dwStatus
	sc = lpOleObj->GetMiscStatus(dwDrawAspect, &dwStatus);
	if (sc != S_OK)
		dwStatus = 0;

	// Get OBJECTDESCRIPTOR
	hObjDesc = _AfxOleGetObjectDescriptorData(clsid, dwDrawAspect, sizelHim,
		pointl, dwStatus, lpszFullUserTypeName, lpszSrcOfCopy);

	// Clean up
	CoTaskMemFree(lpszFullUserTypeName);
	if (bFreeSrcOfCopy)
		CoTaskMemFree((LPOLESTR)lpszSrcOfCopy);
	RELEASE(lpSrcMonikerOfCopy);
	RELEASE(lpOleLink);
	RELEASE(lpViewObj2);

	return hObjDesc;
}