149 lines
4.3 KiB
C++
149 lines
4.3 KiB
C++
//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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//
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// Copyright (C) Microsoft Corporation, 1999 - 1999
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//
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// File: DataObj.cpp
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//
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//--------------------------------------------------------------------------
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#include "stdafx.h"
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#include "displ2.h"
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#include "DsplMgr2.h"
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#define MY_CF_SNAPIN_INTERNAL L"DISPLAY MANAGER SNAPIN"
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// global(s)
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extern long g_ref_DataObject; // in displ2.cpp
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const GUID GUID_RootNode = { /* d59cd090-44d9-11d1-9fd5-00600832db4a */
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0xd59cd090,
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0x44d9,
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0x11d1,
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{0x9f, 0xd5, 0x00, 0x60, 0x08, 0x32, 0xdb, 0x4a}
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};
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const GUID GUID_WallpaperNode = { /* d59cd091-44d9-11d1-9fd5-00600832db4a */
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0xd59cd091,
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0x44d9,
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0x11d1,
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{0x9f, 0xd5, 0x00, 0x60, 0x08, 0x32, 0xdb, 0x4a}
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};
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const GUID GUID_PatternNode = { /* d59cd092-44d9-11d1-9fd5-00600832db4a */
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0xd59cd092,
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0x44d9,
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0x11d1,
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{0x9f, 0xd5, 0x00, 0x60, 0x08, 0x32, 0xdb, 0x4a}
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};
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// statics
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UINT CDataObject::s_cfInternal = 0;
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UINT CDataObject::s_cfDisplayName = 0;
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UINT CDataObject::s_cfNodeType = 0;
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UINT CDataObject::s_cfSnapinClsid = 0;
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UINT CDataObject::s_cfSnapinPreloads = 0;
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CDataObject::CDataObject(long cookie, DATA_OBJECT_TYPES type)
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{
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#ifdef DEBUG
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InterlockedIncrement (&g_ref_DataObject);
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#endif
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m_ref = 1;
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m_cookie = cookie;
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m_type = type;
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m_bPreload = FALSE;
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USES_CONVERSION;
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s_cfInternal = RegisterClipboardFormat (W2T(MY_CF_SNAPIN_INTERNAL));
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s_cfDisplayName = RegisterClipboardFormat (W2T(CCF_DISPLAY_NAME));
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s_cfNodeType = RegisterClipboardFormat (W2T(CCF_NODETYPE));
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s_cfSnapinClsid = RegisterClipboardFormat (W2T(CCF_SNAPIN_CLASSID));
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s_cfSnapinPreloads = RegisterClipboardFormat (W2T(CCF_SNAPIN_PRELOADS));
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}
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CDataObject::~CDataObject ()
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{
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#ifdef DEBUG
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InterlockedDecrement (&g_ref_DataObject);
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#endif
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}
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HRESULT CDataObject::QueryInterface (REFIID riid, LPVOID FAR* ppvObj)
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{
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if (ppvObj == NULL)
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return E_INVALIDARG;
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if ( (riid == IID_IUnknown) ||
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(riid == IID_IDataObject) ){
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// I know about these two interfaces, only.
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*ppvObj = (void *)this;
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} else {
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*ppvObj = NULL;
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return E_NOINTERFACE;
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}
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AddRef();
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return S_OK;
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}
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ULONG CDataObject::AddRef ()
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{
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return InterlockedIncrement ((LONG *) &m_ref);
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}
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ULONG CDataObject::Release ()
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{
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InterlockedDecrement ((LONG *)&m_ref);
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if (m_ref == 0) {
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delete this;
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return 0;
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}
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return m_ref;
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}
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HRESULT CDataObject::GetDataHere (FORMATETC *pformatetc, STGMEDIUM *pmedium)
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{
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IStream * pstm = NULL;
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HRESULT hresult = CreateStreamOnHGlobal (pmedium->hGlobal, FALSE, &pstm);
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if (pstm) {
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_ASSERT (hresult == S_OK);
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const CLIPFORMAT cf = pformatetc->cfFormat;
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if (cf == s_cfDisplayName) {
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LPWSTR pszName = L"Display Manager (Version 2)";
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hresult = pstm->Write (pszName, sizeof(WCHAR)*(1+wcslen (pszName)), NULL);
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} else
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if (cf == s_cfInternal) {
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CDataObject * pThis = this;
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hresult = pstm->Write (pThis, sizeof(CDataObject *), NULL);
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} else
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if (cf == s_cfNodeType) {
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const GUID * pguid;
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if (m_cookie == DISPLAY_MANAGER_WALLPAPER)
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pguid = &GUID_WallpaperNode;
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else if (m_cookie == DISPLAY_MANAGER_PATTERN)
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pguid = &GUID_PatternNode;
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else if (m_cookie == DISPLAY_MANAGER_PATTERN_CHILD)
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pguid = &GUID_RootNode;
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else if (m_cookie == 0)
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pguid = &GUID_RootNode;
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else {
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// anything else must be result-side stuff:
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pguid = &GUID_WallpaperNode;
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}
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hresult = pstm->Write ((PVOID)pguid, sizeof(GUID), NULL);
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} else
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if (cf == s_cfSnapinClsid) {
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hresult = pstm->Write (&CLSID_DsplMgr2, sizeof(CLSID_DsplMgr2), NULL);
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} else
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if (cf == s_cfSnapinPreloads) {
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hresult = pstm->Write ((PVOID)&m_bPreload, sizeof(BOOL), NULL);
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} else {
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hresult = DV_E_FORMATETC;
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// Might as well assert, since we should not have any other
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// clipboard formats at this time.
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_ASSERT(hresult == S_OK);
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}
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pstm->Release();
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}
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return hresult;
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}
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