131 lines
3.8 KiB
C
131 lines
3.8 KiB
C
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//==============================================================;
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//
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// This source code is only intended as a supplement to existing Microsoft documentation.
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//
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//
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//
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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) 1999 Microsoft Corporation. All Rights Reserved.
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//
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//
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//
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//==============================================================;
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#ifndef _CPropSheetExtension_H_
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#define _CPropSheetExtension_H_
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#include <tchar.h>
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#include <mmc.h>
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class CPropSheetExtension : public IExtendPropertySheet
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{
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private:
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ULONG m_cref;
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// clipboard format
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static UINT s_cfDisplayName;
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static UINT s_cfSnapInCLSID;
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static UINT s_cfNodeType;
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public:
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CPropSheetExtension();
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~CPropSheetExtension();
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///////////////////////////////
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// Interface IUnknown
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///////////////////////////////
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STDMETHODIMP QueryInterface(REFIID riid, LPVOID *ppv);
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STDMETHODIMP_(ULONG) AddRef();
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STDMETHODIMP_(ULONG) Release();
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///////////////////////////////
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// Interface IExtendPropertySheet
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///////////////////////////////
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virtual /* [helpstring] */ HRESULT STDMETHODCALLTYPE CreatePropertyPages(
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/* [in] */ LPPROPERTYSHEETCALLBACK lpProvider,
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/* [in] */ LONG_PTR handle,
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/* [in] */ LPDATAOBJECT lpIDataObject);
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virtual /* [helpstring] */ HRESULT STDMETHODCALLTYPE QueryPagesFor(
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/* [in] */ LPDATAOBJECT lpDataObject);
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private:
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LONG_PTR m_ppHandle;
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static BOOL CALLBACK DialogProc(HWND hwndDlg, // handle to dialog box
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UINT uMsg, // message
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WPARAM wParam, // first message parameter
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LPARAM lParam // second message parameter
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);
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///////////////////////////////
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// Private IDataObject support bits
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///////////////////////////////
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HRESULT ExtractData( 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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HRESULT hr = S_OK;
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FORMATETC formatetc = {cfClipFormat, NULL, DVASPECT_CONTENT, -1, TYMED_HGLOBAL};
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STGMEDIUM stgmedium = {TYMED_HGLOBAL, NULL};
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stgmedium.hGlobal = ::GlobalAlloc(GPTR, cbData);
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do // false loop
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{
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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 = reinterpret_cast<BYTE*>(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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} 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( IDataObject *piDataObject,
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CLIPFORMAT cfClipFormat,
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_TCHAR *pstr,
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DWORD cchMaxLength)
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{
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return ExtractData( piDataObject, cfClipFormat, (PBYTE)pstr, cchMaxLength );
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}
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HRESULT ExtractSnapInCLSID( IDataObject* piDataObject, CLSID* pclsidSnapin )
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{
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return ExtractData( piDataObject, s_cfSnapInCLSID, (PBYTE)pclsidSnapin, sizeof(CLSID) );
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}
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HRESULT ExtractObjectTypeGUID( IDataObject* piDataObject, GUID* pguidObjectType )
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{
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return ExtractData( piDataObject, s_cfNodeType, (PBYTE)pguidObjectType, sizeof(GUID) );
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}
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};
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#endif _CPropSheetExtension_H_
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