2 * Ole 2 Create functions implementation
4 * Copyright (C) 1999-2000 Abey George
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #define NONAMELESSUNION
25 #define NONAMELESSSTRUCT
30 #include "wine/debug.h"
35 WINE_DEFAULT_DEBUG_CHANNEL(ole);
37 #define MAX_CLIPFORMAT_NAME 80
39 /******************************************************************************
40 * OleQueryCreateFromData [OLE32.@]
42 * Author : Abey George
43 * Checks whether an object can become an embedded object.
44 * the clipboard or OLE drag and drop.
45 * Returns : S_OK - Format that supports Embedded object creation are present.
46 * OLE_E_STATIC - Format that supports static object creation are present.
47 * S_FALSE - No acceptable format is available.
50 HRESULT WINAPI OleQueryCreateFromData(LPDATAOBJECT pSrcDataObject)
54 CHAR szFmtName[MAX_CLIPFORMAT_NAME];
55 BOOL bFoundStatic = FALSE;
57 HRESULT hr = IDataObject_EnumFormatEtc(pSrcDataObject, DATADIR_GET, &pfmt);
60 hr = IEnumFORMATETC_Next(pfmt, 1, &fmt, NULL);
64 GetClipboardFormatNameA(fmt.cfFormat, szFmtName, MAX_CLIPFORMAT_NAME-1);
66 /* first, Check for Embedded Object, Embed Source or Filename */
68 if (!strcmp(szFmtName, CF_EMBEDDEDOBJECT) || !strcmp(szFmtName, CF_EMBEDSOURCE) || !strcmp(szFmtName, CF_FILENAME))
71 /* Check for Metafile, Bitmap or DIB */
73 if (fmt.cfFormat == CF_METAFILEPICT || fmt.cfFormat == CF_BITMAP || fmt.cfFormat == CF_DIB)
76 hr = IEnumFORMATETC_Next(pfmt, 1, &fmt, NULL);
79 /* Found a static format, but no embed format */
87 /******************************************************************************
88 * OleCreateFromData [OLE32.@]
90 * Author : Abey George
91 * Creates an embedded object from data transfer object retrieved from
92 * the clipboard or OLE drag and drop.
93 * Returns : S_OK - Embedded object was created successfully.
94 * OLE_E_STATIC - OLE can create only a static object
95 * DV_E_FORMATETC - No acceptable format is available (only error return code)
96 * TODO : CF_FILENAME, CF_EMBEDEDOBJECT formats. Parameter renderopt is currently ignored.
99 HRESULT WINAPI OleCreateFromData(LPDATAOBJECT pSrcDataObject, REFIID riid,
100 DWORD renderopt, LPFORMATETC pFormatEtc,
101 LPOLECLIENTSITE pClientSite, LPSTORAGE pStg,
104 IEnumFORMATETC *pfmt;
106 CHAR szFmtName[MAX_CLIPFORMAT_NAME];
111 hr = IDataObject_EnumFormatEtc(pSrcDataObject, DATADIR_GET, &pfmt);
115 memset(&std, 0, sizeof(STGMEDIUM));
117 hr = IEnumFORMATETC_Next(pfmt, 1, &fmt, NULL);
120 GetClipboardFormatNameA(fmt.cfFormat, szFmtName, MAX_CLIPFORMAT_NAME-1);
122 /* first, Check for Embedded Object, Embed Source or Filename */
123 /* TODO: Currently checks only for Embed Source. */
125 if (!strcmp(szFmtName, CF_EMBEDSOURCE))
127 std.tymed = TYMED_HGLOBAL;
129 if ((hr1 = IDataObject_GetData(pSrcDataObject, &fmt, &std)) == S_OK)
131 ILockBytes *ptrILockBytes = 0;
132 IStorage *pStorage = 0;
133 IOleObject *pOleObject = 0;
134 IPersistStorage *pPersistStorage = 0;
137 /* Create ILock bytes */
139 hr1 = CreateILockBytesOnHGlobal(std.u.hGlobal, FALSE, &ptrILockBytes);
141 /* Open storage on the ILock bytes */
144 hr1 = StgOpenStorageOnILockBytes(ptrILockBytes, NULL, STGM_SHARE_EXCLUSIVE, NULL, 0, &pStorage);
146 /* Get Class ID from the opened storage */
149 hr1 = ReadClassStg(pStorage, &clsID);
151 /* Create default handler for Persist storage */
154 hr1 = OleCreateDefaultHandler(&clsID, NULL, &IID_IPersistStorage, (LPVOID*)&pPersistStorage);
156 /* Load the storage to Persist storage */
159 hr1 = IPersistStorage_Load(pPersistStorage, pStorage);
161 /* Query for IOleObject */
164 hr1 = IPersistStorage_QueryInterface(pPersistStorage, &IID_IOleObject, (LPVOID*)&pOleObject);
166 /* Set client site with the IOleObject */
169 hr1 = IOleObject_SetClientSite(pOleObject, pClientSite);
171 IPersistStorage_Release(pPersistStorage);
172 /* Query for the requested interface */
175 hr1 = IPersistStorage_QueryInterface(pPersistStorage, riid, ppvObj);
177 IPersistStorage_Release(pPersistStorage);
179 IStorage_Release(pStorage);
187 return DV_E_FORMATETC;
190 hr = IEnumFORMATETC_Next(pfmt, 1, &fmt, NULL);
194 return DV_E_FORMATETC;