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95 lines
2.4 KiB
95 lines
2.4 KiB
//=============================================================================
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//
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// This source code is only intended as a supplement to existing Microsoft
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// documentation.
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//
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// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
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// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
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// PURPOSE.
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//
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// Copyright (C) 2000 Microsoft Corporation. All Rights Reserved.
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//=============================================================================
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#include "stdafx.h"
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#include "globals.h"
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//
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// Global functions for extracting information from a primary's data object
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//
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HRESULT ExtractData(
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IDataObject* piDataObject,
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CLIPFORMAT cfClipFormat,
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BYTE* pbData,
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DWORD cbData
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)
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{
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if ( piDataObject == NULL )
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{
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return E_INVALIDARG;
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}
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HRESULT hr = S_OK;
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FORMATETC formatetc =
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{
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cfClipFormat,
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NULL,
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DVASPECT_CONTENT,
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-1,
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TYMED_HGLOBAL
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};
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STGMEDIUM stgmedium =
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{
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TYMED_HGLOBAL,
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NULL
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};
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do // false loop
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{
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stgmedium.hGlobal = ::GlobalAlloc(GPTR, cbData);
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if ( NULL == stgmedium.hGlobal )
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{
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hr = E_OUTOFMEMORY;
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break;
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}
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hr = piDataObject->GetDataHere( &formatetc, &stgmedium );
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if ( FAILED(hr) )
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{
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break;
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}
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BYTE* pbNewData = (BYTE*)::GlobalLock(stgmedium.hGlobal);
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if (NULL == pbNewData)
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{
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hr = E_UNEXPECTED;
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break;
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}
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::memcpy( pbData, pbNewData, cbData );
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::GlobalUnlock( stgmedium.hGlobal);
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} while (FALSE); // false loop
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if (NULL != stgmedium.hGlobal)
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{
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::GlobalFree( stgmedium.hGlobal );
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}
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return hr;
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} // ExtractData()
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HRESULT ExtractString(
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IDataObject* piDataObject,
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CLIPFORMAT cfClipFormat,
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WCHAR* pstr,
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DWORD cchMaxLength)
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{
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return ExtractData( piDataObject, cfClipFormat,
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(PBYTE)pstr, cchMaxLength );
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}
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