2 * OLE 2 clipboard support
4 * Copyright 1999 Noel Borthwick <noel@macadamian.com>
5 * Copyright 2000 Abey George <abey@macadamian.com>
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 * This file contains the implementation for the OLE Clipboard and its
23 * internal interfaces. The OLE clipboard interacts with an IDataObject
24 * interface via the OleSetClipboard, OleGetClipboard and
25 * OleIsCurrentClipboard API's. An internal IDataObject delegates
26 * to a client supplied IDataObject or the WIN32 clipboard API depending
27 * on whether OleSetClipboard has been invoked.
28 * Here are some operating scenarios:
30 * 1. OleSetClipboard called: In this case the internal IDataObject
31 * delegates to the client supplied IDataObject. Additionally OLE takes
32 * ownership of the Windows clipboard and any HGLOCBAL IDataObject
33 * items are placed on the Windows clipboard. This allows non OLE aware
34 * applications to access these. A local WinProc fields WM_RENDERFORMAT
35 * and WM_RENDERALLFORMATS messages in this case.
37 * 2. OleGetClipboard called without previous OleSetClipboard. Here the internal
38 * IDataObject functionality wraps around the WIN32 clipboard API.
40 * 3. OleGetClipboard called after previous OleSetClipboard. Here the internal
41 * IDataObject delegates to the source IDataObjects functionality directly,
42 * thereby bypassing the Windows clipboard.
44 * Implementation references : Inside OLE 2'nd edition by Kraig Brockschmidt
47 * - Support for pasting between different processes. OLE clipboard support
48 * currently works only for in process copy and paste. Since we internally
49 * store a pointer to the source's IDataObject and delegate to that, this
50 * will fail if the IDataObject client belongs to a different process.
51 * - IDataObject::GetDataHere is not implemented
52 * - OleFlushClipboard needs to additionally handle TYMED_IStorage media
53 * by copying the storage into global memory. Subsequently the default
54 * data object exposed through OleGetClipboard must convert this TYMED_HGLOBAL
55 * back to TYMED_IStorage.
56 * - OLE1 compatibility formats to be synthesized from OLE2 formats and put on
57 * clipboard in OleSetClipboard.
67 #define NONAMELESSUNION
68 #define NONAMELESSSTRUCT
77 #include "wine/debug.h"
80 #include "storage32.h"
82 #include "compobj_private.h"
84 WINE_DEFAULT_DEBUG_CHANNEL(ole);
86 #define HANDLE_ERROR(err) do { hr = err; TRACE("(HRESULT=%x)\n", (HRESULT)err); goto CLEANUP; } while (0)
88 /* Structure of 'Ole Private Data' clipboard format */
92 DWORD first_use; /* Has this cf been added to the list already */
94 } ole_priv_data_entry;
99 DWORD size; /* in bytes of the entire structure */
101 DWORD count; /* no. of format entries */
103 ole_priv_data_entry entries[1]; /* array of size count */
104 /* then follows any DVTARGETDEVICE structures referenced in the FORMATETCs */
107 /*****************************************************************************
110 * Returns a ptr to a target device at a given offset from the
111 * start of the ole_priv_data.
113 * Used when unpacking ole private data from the clipboard.
115 static inline DVTARGETDEVICE *td_offs_to_ptr(ole_priv_data *data, DWORD_PTR off)
117 if(off == 0) return NULL;
118 return (DVTARGETDEVICE*)((char*)data + off);
121 /*****************************************************************************
124 * Get the offset from the start of the ole_priv_data of the idx'th
127 * Used when packing ole private data to the clipboard.
129 static inline DWORD_PTR td_get_offs(ole_priv_data *data, DWORD idx)
131 if(data->entries[idx].fmtetc.ptd == NULL) return 0;
132 return (char*)data->entries[idx].fmtetc.ptd - (char*)data;
135 /****************************************************************************
136 * Consumer snapshot. Represents the state of the ole clipboard
137 * returned by OleGetClipboard().
139 typedef struct snapshot
141 IDataObject IDataObject_iface;
144 DWORD seq_no; /* Clipboard sequence number corresponding to this snapshot */
146 IDataObject *data; /* If we unmarshal a remote data object we hold a ref here */
149 /****************************************************************************
152 typedef struct ole_clipbrd
154 snapshot *latest_snapshot; /* Latest consumer snapshot */
156 HWND window; /* Hidden clipboard window */
157 IDataObject *src_data; /* Source object passed to OleSetClipboard */
158 ole_priv_data *cached_enum; /* Cached result from the enumeration of src data object */
159 IStream *marshal_data; /* Stream onto which to marshal src_data */
162 static inline snapshot *impl_from_IDataObject(IDataObject *iface)
164 return CONTAINING_RECORD(iface, snapshot, IDataObject_iface);
167 typedef struct PresentationDataHeader
170 DWORD dwObjectExtentX;
171 DWORD dwObjectExtentY;
173 } PresentationDataHeader;
176 * The one and only ole_clipbrd object which is created by OLEClipbrd_Initialize()
178 static ole_clipbrd* theOleClipboard;
180 static inline HRESULT get_ole_clipbrd(ole_clipbrd **clipbrd)
182 struct oletls *info = COM_CurrentInfo();
186 return CO_E_NOTINITIALIZED;
187 *clipbrd = theOleClipboard;
193 * Name of our registered OLE clipboard window class
195 static const WCHAR clipbrd_wndclass[] = {'C','L','I','P','B','R','D','W','N','D','C','L','A','S','S',0};
197 static const WCHAR wine_marshal_dataobject[] = {'W','i','n','e',' ','m','a','r','s','h','a','l',' ','d','a','t','a','o','b','j','e','c','t',0};
199 UINT ownerlink_clipboard_format = 0;
200 UINT filename_clipboard_format = 0;
201 UINT filenameW_clipboard_format = 0;
202 UINT dataobject_clipboard_format = 0;
203 UINT embedded_object_clipboard_format = 0;
204 UINT embed_source_clipboard_format = 0;
205 UINT custom_link_source_clipboard_format = 0;
206 UINT link_source_clipboard_format = 0;
207 UINT object_descriptor_clipboard_format = 0;
208 UINT link_source_descriptor_clipboard_format = 0;
209 UINT ole_private_data_clipboard_format = 0;
211 static UINT wine_marshal_clipboard_format;
213 static inline char *dump_fmtetc(FORMATETC *fmt)
215 static char buf[100];
217 snprintf(buf, sizeof(buf), "cf %04x ptd %p aspect %x lindex %d tymed %x",
218 fmt->cfFormat, fmt->ptd, fmt->dwAspect, fmt->lindex, fmt->tymed);
222 /*---------------------------------------------------------------------*
223 * Implementation of the internal IEnumFORMATETC interface returned by
224 * the OLE clipboard's IDataObject.
225 *---------------------------------------------------------------------*/
227 typedef struct enum_fmtetc
229 IEnumFORMATETC IEnumFORMATETC_iface;
232 UINT pos; /* current enumerator position */
236 static inline enum_fmtetc *impl_from_IEnumFORMATETC(IEnumFORMATETC *iface)
238 return CONTAINING_RECORD(iface, enum_fmtetc, IEnumFORMATETC_iface);
241 /************************************************************************
242 * OLEClipbrd_IEnumFORMATETC_QueryInterface (IUnknown)
244 * See Windows documentation for more details on IUnknown methods.
246 static HRESULT WINAPI OLEClipbrd_IEnumFORMATETC_QueryInterface
247 (LPENUMFORMATETC iface, REFIID riid, LPVOID* ppvObj)
249 enum_fmtetc *This = impl_from_IEnumFORMATETC(iface);
251 TRACE("(%p)->(IID: %s, %p)\n", This, debugstr_guid(riid), ppvObj);
255 if(IsEqualIID(riid, &IID_IUnknown) ||
256 IsEqualIID(riid, &IID_IEnumFORMATETC))
263 IEnumFORMATETC_AddRef((IEnumFORMATETC*)*ppvObj);
264 TRACE("-- Interface: (%p)->(%p)\n",ppvObj,*ppvObj);
268 TRACE("-- Interface: E_NOINTERFACE\n");
269 return E_NOINTERFACE;
272 /************************************************************************
273 * OLEClipbrd_IEnumFORMATETC_AddRef (IUnknown)
276 static ULONG WINAPI OLEClipbrd_IEnumFORMATETC_AddRef(LPENUMFORMATETC iface)
278 enum_fmtetc *This = impl_from_IEnumFORMATETC(iface);
279 TRACE("(%p)->(count=%u)\n",This, This->ref);
281 return InterlockedIncrement(&This->ref);
284 /************************************************************************
285 * OLEClipbrd_IEnumFORMATETC_Release (IUnknown)
287 * See Windows documentation for more details on IUnknown methods.
289 static ULONG WINAPI OLEClipbrd_IEnumFORMATETC_Release(LPENUMFORMATETC iface)
291 enum_fmtetc *This = impl_from_IEnumFORMATETC(iface);
294 TRACE("(%p)->(count=%u)\n",This, This->ref);
296 ref = InterlockedDecrement(&This->ref);
299 TRACE("() - destroying IEnumFORMATETC(%p)\n",This);
300 HeapFree(GetProcessHeap(), 0, This->data);
301 HeapFree(GetProcessHeap(), 0, This);
306 /************************************************************************
307 * OLEClipbrd_IEnumFORMATETC_Next (IEnumFORMATETC)
309 * Standard enumerator members for IEnumFORMATETC
311 static HRESULT WINAPI OLEClipbrd_IEnumFORMATETC_Next
312 (LPENUMFORMATETC iface, ULONG celt, FORMATETC *rgelt, ULONG *pceltFethed)
314 enum_fmtetc *This = impl_from_IEnumFORMATETC(iface);
316 HRESULT hres = S_FALSE;
318 TRACE("(%p)->(pos=%u)\n", This, This->pos);
320 if (This->pos < This->data->count)
322 cfetch = This->data->count - This->pos;
329 for(i = 0; i < cfetch; i++)
331 rgelt[i] = This->data->entries[This->pos++].fmtetc;
334 DVTARGETDEVICE *target = rgelt[i].ptd;
335 rgelt[i].ptd = CoTaskMemAlloc(target->tdSize);
336 if(!rgelt[i].ptd) return E_OUTOFMEMORY;
337 memcpy(rgelt[i].ptd, target, target->tdSize);
348 *pceltFethed = cfetch;
354 /************************************************************************
355 * OLEClipbrd_IEnumFORMATETC_Skip (IEnumFORMATETC)
357 * Standard enumerator members for IEnumFORMATETC
359 static HRESULT WINAPI OLEClipbrd_IEnumFORMATETC_Skip(LPENUMFORMATETC iface, ULONG celt)
361 enum_fmtetc *This = impl_from_IEnumFORMATETC(iface);
362 TRACE("(%p)->(num=%u)\n", This, celt);
365 if (This->pos > This->data->count)
367 This->pos = This->data->count;
373 /************************************************************************
374 * OLEClipbrd_IEnumFORMATETC_Reset (IEnumFORMATETC)
376 * Standard enumerator members for IEnumFORMATETC
378 static HRESULT WINAPI OLEClipbrd_IEnumFORMATETC_Reset(LPENUMFORMATETC iface)
380 enum_fmtetc *This = impl_from_IEnumFORMATETC(iface);
381 TRACE("(%p)->()\n", This);
387 static HRESULT enum_fmtetc_construct(ole_priv_data *data, UINT pos, IEnumFORMATETC **obj);
389 /************************************************************************
390 * OLEClipbrd_IEnumFORMATETC_Clone (IEnumFORMATETC)
392 * Standard enumerator members for IEnumFORMATETC
394 static HRESULT WINAPI OLEClipbrd_IEnumFORMATETC_Clone
395 (LPENUMFORMATETC iface, LPENUMFORMATETC* obj)
397 enum_fmtetc *This = impl_from_IEnumFORMATETC(iface);
398 ole_priv_data *new_data;
401 TRACE("(%p)->(%p)\n", This, obj);
403 if ( !obj ) return E_INVALIDARG;
406 new_data = HeapAlloc(GetProcessHeap(), 0, This->data->size);
407 if(!new_data) return E_OUTOFMEMORY;
408 memcpy(new_data, This->data, This->data->size);
410 /* Fixup any target device ptrs */
411 for(i = 0; i < This->data->count; i++)
412 new_data->entries[i].fmtetc.ptd =
413 td_offs_to_ptr(new_data, td_get_offs(This->data, i));
415 return enum_fmtetc_construct(new_data, This->pos, obj);
418 static const IEnumFORMATETCVtbl efvt =
420 OLEClipbrd_IEnumFORMATETC_QueryInterface,
421 OLEClipbrd_IEnumFORMATETC_AddRef,
422 OLEClipbrd_IEnumFORMATETC_Release,
423 OLEClipbrd_IEnumFORMATETC_Next,
424 OLEClipbrd_IEnumFORMATETC_Skip,
425 OLEClipbrd_IEnumFORMATETC_Reset,
426 OLEClipbrd_IEnumFORMATETC_Clone
429 /************************************************************************
430 * enum_fmtetc_construct
432 * Creates an IEnumFORMATETC enumerator from ole_priv_data which it then owns.
434 static HRESULT enum_fmtetc_construct(ole_priv_data *data, UINT pos, IEnumFORMATETC **obj)
439 ef = HeapAlloc(GetProcessHeap(), 0, sizeof(*ef));
440 if (!ef) return E_OUTOFMEMORY;
443 ef->IEnumFORMATETC_iface.lpVtbl = &efvt;
447 TRACE("(%p)->()\n", ef);
448 *obj = &ef->IEnumFORMATETC_iface;
452 /***********************************************************************
455 * Helper method to duplicate an HGLOBAL chunk of memory
457 static HRESULT dup_global_mem( HGLOBAL src, DWORD flags, HGLOBAL *dst )
459 void *src_ptr, *dst_ptr;
463 if ( !src ) return S_FALSE;
465 size = GlobalSize(src);
467 *dst = GlobalAlloc( flags, size );
468 if ( !*dst ) return E_OUTOFMEMORY;
470 src_ptr = GlobalLock(src);
471 dst_ptr = GlobalLock(*dst);
473 memcpy(dst_ptr, src_ptr, size);
481 /***********************************************************************
484 * Helper function to duplicate a handle to a METAFILEPICT, and the
485 * contained HMETAFILE.
487 static HRESULT dup_metafilepict(HGLOBAL src, HGLOBAL *pdest)
491 METAFILEPICT *dest_ptr;
495 /* Copy the METAFILEPICT structure. */
496 hr = dup_global_mem(src, GMEM_DDESHARE|GMEM_MOVEABLE, &dest);
497 if (FAILED(hr)) return hr;
499 dest_ptr = GlobalLock(dest);
500 if (!dest_ptr) return E_FAIL;
502 /* Give the new METAFILEPICT a separate HMETAFILE. */
503 dest_ptr->hMF = CopyMetaFileW(dest_ptr->hMF, NULL);
518 /***********************************************************************
521 * Helper function to GlobalFree a handle to a METAFILEPICT, and also
522 * free the contained HMETAFILE.
524 static void free_metafilepict(HGLOBAL src)
526 METAFILEPICT *src_ptr;
528 src_ptr = GlobalLock(src);
531 DeleteMetaFile(src_ptr->hMF);
537 /***********************************************************************
540 * Helper function to duplicate an HBITMAP.
542 static HRESULT dup_bitmap(HBITMAP src, HBITMAP *pdest)
545 HGDIOBJ orig_src_bitmap;
549 src_dc = CreateCompatibleDC(NULL);
550 orig_src_bitmap = SelectObject(src_dc, src);
551 GetObjectW(src, sizeof bm, &bm);
552 dest = CreateCompatibleBitmap(src_dc, bm.bmWidth, bm.bmHeight);
555 HDC dest_dc = CreateCompatibleDC(NULL);
556 HGDIOBJ orig_dest_bitmap = SelectObject(dest_dc, dest);
557 BitBlt(dest_dc, 0, 0, bm.bmWidth, bm.bmHeight, src_dc, 0, 0, SRCCOPY);
558 SelectObject(dest_dc, orig_dest_bitmap);
561 SelectObject(src_dc, orig_src_bitmap);
564 return dest ? S_OK : E_FAIL;
567 /************************************************************
568 * render_embed_source_hack
570 * This is clearly a hack and has no place in the clipboard code.
573 static HRESULT render_embed_source_hack(IDataObject *data, LPFORMATETC fmt)
576 HGLOBAL hStorage = 0;
578 ILockBytes *ptrILockBytes;
580 memset(&std, 0, sizeof(STGMEDIUM));
581 std.tymed = fmt->tymed = TYMED_ISTORAGE;
583 hStorage = GlobalAlloc(GMEM_SHARE|GMEM_MOVEABLE, 0);
584 if (hStorage == NULL) return E_OUTOFMEMORY;
585 hr = CreateILockBytesOnHGlobal(hStorage, FALSE, &ptrILockBytes);
586 hr = StgCreateDocfileOnILockBytes(ptrILockBytes, STGM_SHARE_EXCLUSIVE|STGM_READWRITE, 0, &std.u.pstg);
587 ILockBytes_Release(ptrILockBytes);
589 if (FAILED(hr = IDataObject_GetDataHere(theOleClipboard->src_data, fmt, &std)))
591 WARN("() : IDataObject_GetDataHere failed to render clipboard data! (%x)\n", hr);
592 GlobalFree(hStorage);
596 if (1) /* check whether the presentation data is already -not- present */
600 METAFILEPICT *mfp = 0;
602 fmt2.cfFormat = CF_METAFILEPICT;
604 fmt2.dwAspect = DVASPECT_CONTENT;
606 fmt2.tymed = TYMED_MFPICT;
608 memset(&std2, 0, sizeof(STGMEDIUM));
609 std2.tymed = TYMED_MFPICT;
611 /* Get the metafile picture out of it */
613 if (SUCCEEDED(hr = IDataObject_GetData(theOleClipboard->src_data, &fmt2, &std2)))
615 mfp = GlobalLock(std2.u.hGlobal);
620 OLECHAR name[]={ 2, 'O', 'l', 'e', 'P', 'r', 'e', 's', '0', '0', '0', 0};
621 IStream *pStream = 0;
623 PresentationDataHeader pdh;
627 CHAR strOleTypeName[51];
628 BYTE OlePresStreamHeader [] =
630 0xFF, 0xFF, 0xFF, 0xFF, 0x03, 0x00, 0x00, 0x00,
631 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
632 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00,
633 0x00, 0x00, 0x00, 0x00
636 nSize = GetMetaFileBitsEx(mfp->hMF, 0, NULL);
638 memset(&pdh, 0, sizeof(PresentationDataHeader));
639 memcpy(&pdh, OlePresStreamHeader, sizeof(OlePresStreamHeader));
641 pdh.dwObjectExtentX = mfp->xExt;
642 pdh.dwObjectExtentY = mfp->yExt;
645 hr = IStorage_CreateStream(std.u.pstg, name, STGM_CREATE|STGM_SHARE_EXCLUSIVE|STGM_READWRITE, 0, 0, &pStream);
647 hr = IStream_Write(pStream, &pdh, sizeof(PresentationDataHeader), NULL);
649 mfBits = HeapAlloc(GetProcessHeap(), 0, nSize);
650 nSize = GetMetaFileBitsEx(mfp->hMF, nSize, mfBits);
652 hr = IStream_Write(pStream, mfBits, nSize, NULL);
654 IStream_Release(pStream);
656 HeapFree(GetProcessHeap(), 0, mfBits);
658 GlobalUnlock(std2.u.hGlobal);
659 ReleaseStgMedium(&std2);
661 ReadClassStg(std.u.pstg, &clsID);
662 ProgIDFromCLSID(&clsID, &strProgID);
664 WideCharToMultiByte( CP_ACP, 0, strProgID, -1, strOleTypeName, sizeof(strOleTypeName), NULL, NULL );
665 OLECONVERT_CreateOleStream(std.u.pstg);
666 OLECONVERT_CreateCompObjStream(std.u.pstg, strOleTypeName);
670 if ( !SetClipboardData( fmt->cfFormat, hStorage ) )
672 WARN("() : Failed to set rendered clipboard data into clipboard!\n");
673 GlobalFree(hStorage);
674 hr = CLIPBRD_E_CANT_SET;
677 ReleaseStgMedium(&std);
681 /************************************************************************
682 * find_format_in_list
684 * Returns the first entry that matches the provided clipboard format.
686 static inline ole_priv_data_entry *find_format_in_list(ole_priv_data_entry *entries, DWORD num, UINT cf)
689 for(i = 0; i < num; i++)
690 if(entries[i].fmtetc.cfFormat == cf)
696 /***************************************************************************
697 * get_data_from_storage
699 * Returns storage data in an HGLOBAL.
701 static HRESULT get_data_from_storage(IDataObject *data, FORMATETC *fmt, HGLOBAL *mem)
712 h = GlobalAlloc( GMEM_DDESHARE|GMEM_MOVEABLE, 0 );
713 if(!h) return E_OUTOFMEMORY;
715 hr = CreateILockBytesOnHGlobal(h, FALSE, &lbs);
718 hr = StgCreateDocfileOnILockBytes(lbs, STGM_CREATE|STGM_SHARE_EXCLUSIVE|STGM_READWRITE, 0, &stg);
719 ILockBytes_Release(lbs);
728 med.tymed = stg_fmt.tymed = TYMED_ISTORAGE;
730 med.pUnkForRelease = NULL;
732 hr = IDataObject_GetDataHere(data, &stg_fmt, &med);
736 hr = IDataObject_GetData(data, &stg_fmt, &med);
737 if(FAILED(hr)) goto end;
739 hr = IStorage_CopyTo(med.u.pstg, 0, NULL, NULL, stg);
740 ReleaseStgMedium(&med);
741 if(FAILED(hr)) goto end;
746 IStorage_Release(stg);
747 if(FAILED(hr)) GlobalFree(h);
751 /***************************************************************************
752 * get_data_from_stream
754 * Returns stream data in an HGLOBAL.
756 static HRESULT get_data_from_stream(IDataObject *data, FORMATETC *fmt, HGLOBAL *mem)
766 h = GlobalAlloc( GMEM_DDESHARE|GMEM_MOVEABLE, 0 );
767 if(!h) return E_OUTOFMEMORY;
769 hr = CreateStreamOnHGlobal(h, FALSE, &stm);
770 if(FAILED(hr)) goto error;
773 med.tymed = stm_fmt.tymed = TYMED_ISTREAM;
775 med.pUnkForRelease = NULL;
777 hr = IDataObject_GetDataHere(data, &stm_fmt, &med);
784 hr = IDataObject_GetData(data, &stm_fmt, &med);
785 if(FAILED(hr)) goto error;
788 IStream_Seek(med.u.pstm, offs, STREAM_SEEK_CUR, &pos);
789 IStream_Seek(med.u.pstm, offs, STREAM_SEEK_SET, NULL);
790 hr = IStream_CopyTo(med.u.pstm, stm, pos, NULL, NULL);
791 ReleaseStgMedium(&med);
792 if(FAILED(hr)) goto error;
795 IStream_Release(stm);
799 if(stm) IStream_Release(stm);
804 /***************************************************************************
805 * get_data_from_global
807 * Returns global data in an HGLOBAL.
809 static HRESULT get_data_from_global(IDataObject *data, FORMATETC *fmt, HGLOBAL *mem)
819 mem_fmt.tymed = TYMED_HGLOBAL;
821 hr = IDataObject_GetData(data, &mem_fmt, &med);
822 if(FAILED(hr)) return hr;
824 hr = dup_global_mem(med.u.hGlobal, GMEM_DDESHARE|GMEM_MOVEABLE, &h);
826 if(SUCCEEDED(hr)) *mem = h;
828 ReleaseStgMedium(&med);
833 /***************************************************************************
834 * get_data_from_enhmetafile
836 static HRESULT get_data_from_enhmetafile(IDataObject *data, FORMATETC *fmt, HGLOBAL *mem)
846 mem_fmt.tymed = TYMED_ENHMF;
848 hr = IDataObject_GetData(data, &mem_fmt, &med);
849 if(FAILED(hr)) return hr;
851 copy = CopyEnhMetaFileW(med.u.hEnhMetaFile, NULL);
852 if(copy) *mem = (HGLOBAL)copy;
855 ReleaseStgMedium(&med);
860 /***************************************************************************
861 * get_data_from_metafilepict
863 static HRESULT get_data_from_metafilepict(IDataObject *data, FORMATETC *fmt, HGLOBAL *mem)
873 mem_fmt.tymed = TYMED_MFPICT;
875 hr = IDataObject_GetData(data, &mem_fmt, &med);
876 if(FAILED(hr)) return hr;
878 hr = dup_metafilepict(med.u.hMetaFilePict, ©);
880 if(SUCCEEDED(hr)) *mem = copy;
882 ReleaseStgMedium(&med);
887 /***************************************************************************
888 * get_data_from_bitmap
890 * Returns bitmap in an HBITMAP.
892 static HRESULT get_data_from_bitmap(IDataObject *data, FORMATETC *fmt, HBITMAP *hbm)
902 mem_fmt.tymed = TYMED_GDI;
904 hr = IDataObject_GetData(data, &mem_fmt, &med);
905 if(FAILED(hr)) return hr;
907 hr = dup_bitmap(med.u.hBitmap, ©);
909 if(SUCCEEDED(hr)) *hbm = copy;
911 ReleaseStgMedium(&med);
916 /***********************************************************************
919 * Render the clipboard data. Note that this call will delegate to the
920 * source data object.
922 static HRESULT render_format(IDataObject *data, LPFORMATETC fmt)
924 HANDLE clip_data = NULL; /* HGLOBAL unless otherwise specified */
927 /* Embed source hack */
928 if(fmt->cfFormat == embed_source_clipboard_format)
930 return render_embed_source_hack(data, fmt);
933 if(fmt->tymed & TYMED_ISTORAGE)
935 hr = get_data_from_storage(data, fmt, &clip_data);
937 else if(fmt->tymed & TYMED_ISTREAM)
939 hr = get_data_from_stream(data, fmt, &clip_data);
941 else if(fmt->tymed & TYMED_HGLOBAL)
943 hr = get_data_from_global(data, fmt, &clip_data);
945 else if(fmt->tymed & TYMED_ENHMF)
947 hr = get_data_from_enhmetafile(data, fmt, &clip_data);
949 else if(fmt->tymed & TYMED_MFPICT)
951 /* Returns global handle to METAFILEPICT, containing a copied HMETAFILE */
952 hr = get_data_from_metafilepict(data, fmt, &clip_data);
954 else if(fmt->tymed & TYMED_GDI)
956 /* Returns HBITMAP not HGLOBAL */
957 hr = get_data_from_bitmap(data, fmt, (HBITMAP *)&clip_data);
961 FIXME("Unhandled tymed %x\n", fmt->tymed);
967 if ( !SetClipboardData(fmt->cfFormat, clip_data) )
969 WARN("() : Failed to set rendered clipboard data into clipboard!\n");
970 if(fmt->tymed & TYMED_MFPICT)
971 free_metafilepict(clip_data);
972 else if(fmt->tymed & TYMED_GDI)
973 DeleteObject(clip_data);
975 GlobalFree(clip_data);
976 hr = CLIPBRD_E_CANT_SET;
983 /*---------------------------------------------------------------------*
984 * Implementation of the internal IDataObject interface exposed by
986 *---------------------------------------------------------------------*/
989 /************************************************************************
990 * snapshot_QueryInterface
992 static HRESULT WINAPI snapshot_QueryInterface(IDataObject *iface,
993 REFIID riid, void **ppvObject)
995 snapshot *This = impl_from_IDataObject(iface);
996 TRACE("(%p)->(IID:%s, %p)\n", This, debugstr_guid(riid), ppvObject);
998 if ( (This==0) || (ppvObject==0) )
1003 if (IsEqualIID(&IID_IUnknown, riid) ||
1004 IsEqualIID(&IID_IDataObject, riid))
1010 WARN( "() : asking for unsupported interface %s\n", debugstr_guid(riid));
1011 return E_NOINTERFACE;
1014 IUnknown_AddRef((IUnknown*)*ppvObject);
1019 /************************************************************************
1022 static ULONG WINAPI snapshot_AddRef(IDataObject *iface)
1024 snapshot *This = impl_from_IDataObject(iface);
1026 TRACE("(%p)->(count=%u)\n", This, This->ref);
1028 return InterlockedIncrement(&This->ref);
1031 /************************************************************************
1034 static ULONG WINAPI snapshot_Release(IDataObject *iface)
1036 snapshot *This = impl_from_IDataObject(iface);
1039 TRACE("(%p)->(count=%u)\n", This, This->ref);
1041 ref = InterlockedDecrement(&This->ref);
1045 ole_clipbrd *clipbrd;
1046 HRESULT hr = get_ole_clipbrd(&clipbrd);
1048 if(This->data) IDataObject_Release(This->data);
1050 if(SUCCEEDED(hr) && clipbrd->latest_snapshot == This)
1051 clipbrd->latest_snapshot = NULL;
1052 HeapFree(GetProcessHeap(), 0, This);
1058 /************************************************************
1059 * get_current_ole_clip_window
1061 * Return the window that owns the ole clipboard.
1063 * If the clipboard is flushed or not owned by ole this will
1066 static HWND get_current_ole_clip_window(void)
1071 h = GetClipboardData(dataobject_clipboard_format);
1073 ptr = GlobalLock(h);
1074 if(!ptr) return NULL;
1080 /************************************************************
1081 * get_current_dataobject
1083 * Return an unmarshalled IDataObject if there is a current
1084 * (ie non-flushed) object on the ole clipboard.
1086 static HRESULT get_current_dataobject(IDataObject **data)
1088 HRESULT hr = S_FALSE;
1089 HWND wnd = get_current_ole_clip_window();
1096 if(!wnd) return S_FALSE;
1098 h = GetClipboardData(wine_marshal_clipboard_format);
1099 if(!h) return S_FALSE;
1100 if(GlobalSize(h) == 0) return S_FALSE;
1101 ptr = GlobalLock(h);
1102 if(!ptr) return S_FALSE;
1104 hr = CreateStreamOnHGlobal(NULL, TRUE, &stm);
1105 if(FAILED(hr)) goto end;
1107 hr = IStream_Write(stm, ptr, GlobalSize(h), NULL);
1111 IStream_Seek(stm, pos, STREAM_SEEK_SET, NULL);
1112 hr = CoUnmarshalInterface(stm, &IID_IDataObject, (void**)data);
1114 IStream_Release(stm);
1121 static DWORD get_tymed_from_nonole_cf(UINT cf)
1123 if(cf >= 0xc000) return TYMED_ISTREAM | TYMED_HGLOBAL;
1129 case CF_UNICODETEXT:
1130 return TYMED_ISTREAM | TYMED_HGLOBAL;
1131 case CF_ENHMETAFILE:
1133 case CF_METAFILEPICT:
1134 return TYMED_MFPICT;
1136 FIXME("returning TYMED_NULL for cf %04x\n", cf);
1141 /***********************************************************
1144 * Returns a copy of the Ole Private Data
1146 static HRESULT get_priv_data(ole_priv_data **data)
1150 ole_priv_data *ret = NULL;
1154 handle = GetClipboardData( ole_private_data_clipboard_format );
1157 ole_priv_data *src = GlobalLock(handle);
1162 /* FIXME: sanity check on size */
1163 ret = HeapAlloc(GetProcessHeap(), 0, src->size);
1166 GlobalUnlock(handle);
1167 return E_OUTOFMEMORY;
1169 memcpy(ret, src, src->size);
1170 GlobalUnlock(handle);
1172 /* Fixup any target device offsets to ptrs */
1173 for(i = 0; i < ret->count; i++)
1174 ret->entries[i].fmtetc.ptd =
1175 td_offs_to_ptr(ret, (DWORD_PTR) ret->entries[i].fmtetc.ptd);
1179 if(!ret) /* Non-ole data */
1182 DWORD count = 0, idx, size = FIELD_OFFSET(ole_priv_data, entries);
1184 for(cf = 0; (cf = EnumClipboardFormats(cf)) != 0; count++)
1187 GetClipboardFormatNameA(cf, buf, sizeof(buf));
1188 TRACE("cf %04x %s\n", cf, buf);
1190 TRACE("count %d\n", count);
1191 size += count * sizeof(ret->entries[0]);
1193 /* There are holes in fmtetc so zero init */
1194 ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
1195 if(!ret) return E_OUTOFMEMORY;
1199 for(cf = 0, idx = 0; (cf = EnumClipboardFormats(cf)) != 0; idx++)
1201 ret->entries[idx].fmtetc.cfFormat = cf;
1202 ret->entries[idx].fmtetc.ptd = NULL;
1203 ret->entries[idx].fmtetc.dwAspect = DVASPECT_CONTENT;
1204 ret->entries[idx].fmtetc.lindex = -1;
1205 ret->entries[idx].fmtetc.tymed = get_tymed_from_nonole_cf(cf);
1206 ret->entries[idx].first_use = 1;
1214 /************************************************************************
1215 * get_stgmed_for_global
1217 * Returns a stg medium with a copy of the global handle
1219 static HRESULT get_stgmed_for_global(HGLOBAL h, STGMEDIUM *med)
1223 med->pUnkForRelease = NULL;
1224 med->tymed = TYMED_NULL;
1226 hr = dup_global_mem(h, GMEM_MOVEABLE, &med->u.hGlobal);
1228 if(SUCCEEDED(hr)) med->tymed = TYMED_HGLOBAL;
1233 /************************************************************************
1234 * get_stgmed_for_stream
1236 * Returns a stg medium with a stream based on the handle
1238 static HRESULT get_stgmed_for_stream(HGLOBAL h, STGMEDIUM *med)
1243 med->pUnkForRelease = NULL;
1244 med->tymed = TYMED_NULL;
1246 hr = dup_global_mem(h, GMEM_MOVEABLE, &dst);
1247 if(FAILED(hr)) return hr;
1249 hr = CreateStreamOnHGlobal(dst, TRUE, &med->u.pstm);
1256 med->tymed = TYMED_ISTREAM;
1260 /************************************************************************
1261 * get_stgmed_for_storage
1263 * Returns a stg medium with a storage based on the handle
1265 static HRESULT get_stgmed_for_storage(HGLOBAL h, STGMEDIUM *med)
1271 med->pUnkForRelease = NULL;
1272 med->tymed = TYMED_NULL;
1274 hr = dup_global_mem(h, GMEM_MOVEABLE, &dst);
1275 if(FAILED(hr)) return hr;
1277 hr = CreateILockBytesOnHGlobal(dst, TRUE, &lbs);
1284 hr = StgOpenStorageOnILockBytes(lbs, NULL, STGM_SHARE_EXCLUSIVE | STGM_READWRITE, NULL, 0, &med->u.pstg);
1285 ILockBytes_Release(lbs);
1292 med->tymed = TYMED_ISTORAGE;
1296 /************************************************************************
1297 * get_stgmed_for_emf
1299 * Returns a stg medium with an enhanced metafile based on the handle
1301 static HRESULT get_stgmed_for_emf(HENHMETAFILE hemf, STGMEDIUM *med)
1303 med->pUnkForRelease = NULL;
1304 med->tymed = TYMED_NULL;
1306 med->u.hEnhMetaFile = CopyEnhMetaFileW(hemf, NULL);
1307 if(!med->u.hEnhMetaFile) return E_OUTOFMEMORY;
1308 med->tymed = TYMED_ENHMF;
1312 static inline BOOL string_off_equal(const DVTARGETDEVICE *t1, WORD off1, const DVTARGETDEVICE *t2, WORD off2)
1314 const WCHAR *str1, *str2;
1316 if(off1 == 0 && off2 == 0) return TRUE;
1317 if(off1 == 0 || off2 == 0) return FALSE;
1319 str1 = (const WCHAR*)((const char*)t1 + off1);
1320 str2 = (const WCHAR*)((const char*)t2 + off2);
1322 return !lstrcmpW(str1, str2);
1325 static inline BOOL td_equal(const DVTARGETDEVICE *t1, const DVTARGETDEVICE *t2)
1327 if(t1 == NULL && t2 == NULL) return TRUE;
1328 if(t1 == NULL || t2 == NULL) return FALSE;
1330 if(!string_off_equal(t1, t1->tdDriverNameOffset, t2, t2->tdDriverNameOffset))
1332 if(!string_off_equal(t1, t1->tdDeviceNameOffset, t2, t2->tdDeviceNameOffset))
1334 if(!string_off_equal(t1, t1->tdPortNameOffset, t2, t2->tdPortNameOffset))
1337 /* FIXME check devmode? */
1342 /************************************************************************
1345 static HRESULT WINAPI snapshot_GetData(IDataObject *iface, FORMATETC *fmt,
1348 snapshot *This = impl_from_IDataObject(iface);
1351 ole_priv_data *enum_data = NULL;
1352 ole_priv_data_entry *entry;
1355 TRACE("(%p, %p {%s}, %p)\n", iface, fmt, dump_fmtetc(fmt), med);
1357 if ( !fmt || !med ) return E_INVALIDARG;
1359 if ( !OpenClipboard(NULL)) return CLIPBRD_E_CANT_OPEN;
1362 hr = get_current_dataobject(&This->data);
1366 hr = IDataObject_GetData(This->data, fmt, med);
1371 h = GetClipboardData(fmt->cfFormat);
1374 hr = DV_E_FORMATETC;
1378 hr = get_priv_data(&enum_data);
1379 if(FAILED(hr)) goto end;
1381 entry = find_format_in_list(enum_data->entries, enum_data->count, fmt->cfFormat);
1384 if(!td_equal(fmt->ptd, entry->fmtetc.ptd))
1386 hr = DV_E_FORMATETC;
1389 mask = fmt->tymed & entry->fmtetc.tymed;
1390 if(!mask) mask = fmt->tymed & (TYMED_ISTREAM | TYMED_HGLOBAL);
1392 else /* non-Ole format */
1393 mask = fmt->tymed & TYMED_HGLOBAL;
1395 if(mask & TYMED_ISTORAGE)
1396 hr = get_stgmed_for_storage(h, med);
1397 else if(mask & TYMED_HGLOBAL)
1398 hr = get_stgmed_for_global(h, med);
1399 else if(mask & TYMED_ISTREAM)
1400 hr = get_stgmed_for_stream(h, med);
1401 else if(mask & TYMED_ENHMF)
1402 hr = get_stgmed_for_emf((HENHMETAFILE)h, med);
1405 FIXME("Unhandled tymed - mask %x req tymed %x\n", mask, fmt->tymed);
1411 HeapFree(GetProcessHeap(), 0, enum_data);
1412 if ( !CloseClipboard() ) hr = CLIPBRD_E_CANT_CLOSE;
1416 /************************************************************************
1417 * snapshot_GetDataHere
1419 static HRESULT WINAPI snapshot_GetDataHere(IDataObject *iface, FORMATETC *fmt,
1422 snapshot *This = impl_from_IDataObject(iface);
1425 ole_priv_data *enum_data = NULL;
1426 ole_priv_data_entry *entry;
1429 if ( !fmt || !med ) return E_INVALIDARG;
1431 TRACE("(%p, %p {%s}, %p (tymed %x)\n", iface, fmt, dump_fmtetc(fmt), med, med->tymed);
1433 if ( !OpenClipboard(NULL)) return CLIPBRD_E_CANT_OPEN;
1436 hr = get_current_dataobject(&This->data);
1440 hr = IDataObject_GetDataHere(This->data, fmt, med);
1448 h = GetClipboardData(fmt->cfFormat);
1451 hr = DV_E_FORMATETC;
1455 hr = get_priv_data(&enum_data);
1456 if(FAILED(hr)) goto end;
1458 entry = find_format_in_list(enum_data->entries, enum_data->count, fmt->cfFormat);
1461 if(!td_equal(fmt->ptd, entry->fmtetc.ptd))
1463 hr = DV_E_FORMATETC;
1466 supported = entry->fmtetc.tymed;
1468 else /* non-Ole format */
1469 supported = TYMED_HGLOBAL;
1475 DWORD src_size = GlobalSize(h);
1476 DWORD dst_size = GlobalSize(med->u.hGlobal);
1478 if(dst_size >= src_size)
1480 void *src = GlobalLock(h);
1481 void *dst = GlobalLock(med->u.hGlobal);
1483 memcpy(dst, src, src_size);
1484 GlobalUnlock(med->u.hGlobal);
1492 DWORD src_size = GlobalSize(h);
1493 void *src = GlobalLock(h);
1494 hr = IStream_Write(med->u.pstm, src, src_size, NULL);
1498 case TYMED_ISTORAGE:
1501 if(!(supported & TYMED_ISTORAGE))
1506 hr = get_stgmed_for_storage(h, ©);
1509 hr = IStorage_CopyTo(copy.u.pstg, 0, NULL, NULL, med->u.pstg);
1510 ReleaseStgMedium(©);
1515 FIXME("Unhandled tymed - supported %x req tymed %x\n", supported, med->tymed);
1521 HeapFree(GetProcessHeap(), 0, enum_data);
1522 if ( !CloseClipboard() ) hr = CLIPBRD_E_CANT_CLOSE;
1526 /************************************************************************
1527 * snapshot_QueryGetData
1529 * The OLE Clipboard's implementation of this method delegates to
1530 * a data source if there is one or wraps around the windows clipboard
1531 * function IsClipboardFormatAvailable() otherwise.
1534 static HRESULT WINAPI snapshot_QueryGetData(IDataObject *iface, FORMATETC *fmt)
1536 FIXME("(%p, %p {%s})\n", iface, fmt, dump_fmtetc(fmt));
1538 if (!fmt) return E_INVALIDARG;
1540 if ( fmt->dwAspect != DVASPECT_CONTENT ) return DV_E_FORMATETC;
1542 if ( fmt->lindex != -1 ) return DV_E_FORMATETC;
1544 return (IsClipboardFormatAvailable(fmt->cfFormat)) ? S_OK : DV_E_CLIPFORMAT;
1547 /************************************************************************
1548 * snapshot_GetCanonicalFormatEtc
1550 static HRESULT WINAPI snapshot_GetCanonicalFormatEtc(IDataObject *iface, FORMATETC *fmt_in,
1553 TRACE("(%p, %p, %p)\n", iface, fmt_in, fmt_out);
1555 if ( !fmt_in || !fmt_out ) return E_INVALIDARG;
1558 return DATA_S_SAMEFORMATETC;
1561 /************************************************************************
1564 * The OLE Clipboard does not implement this method
1566 static HRESULT WINAPI snapshot_SetData(IDataObject *iface, FORMATETC *fmt,
1567 STGMEDIUM *med, BOOL release)
1569 TRACE("(%p, %p, %p, %d): not implemented\n", iface, fmt, med, release);
1573 /************************************************************************
1574 * snapshot_EnumFormatEtc
1577 static HRESULT WINAPI snapshot_EnumFormatEtc(IDataObject *iface, DWORD dir,
1578 IEnumFORMATETC **enum_fmt)
1581 ole_priv_data *data = NULL;
1583 TRACE("(%p, %x, %p)\n", iface, dir, enum_fmt);
1587 if ( dir != DATADIR_GET ) return E_NOTIMPL;
1588 if ( !OpenClipboard(NULL) ) return CLIPBRD_E_CANT_OPEN;
1590 hr = get_priv_data(&data);
1592 if(FAILED(hr)) goto end;
1594 hr = enum_fmtetc_construct( data, 0, enum_fmt );
1597 if ( !CloseClipboard() ) hr = CLIPBRD_E_CANT_CLOSE;
1601 /************************************************************************
1604 * The OLE Clipboard does not implement this method
1606 static HRESULT WINAPI snapshot_DAdvise(IDataObject *iface, FORMATETC *fmt,
1607 DWORD flags, IAdviseSink *sink,
1610 TRACE("(%p, %p, %x, %p, %p): not implemented\n", iface, fmt, flags, sink, conn);
1614 /************************************************************************
1615 * snapshot_DUnadvise
1617 * The OLE Clipboard does not implement this method
1619 static HRESULT WINAPI snapshot_DUnadvise(IDataObject* iface, DWORD conn)
1621 TRACE("(%p, %d): not implemented\n", iface, conn);
1625 /************************************************************************
1626 * snapshot_EnumDAdvise
1628 * The OLE Clipboard does not implement this method
1630 static HRESULT WINAPI snapshot_EnumDAdvise(IDataObject* iface,
1631 IEnumSTATDATA** enum_advise)
1633 TRACE("(%p, %p): not implemented\n", iface, enum_advise);
1637 static const IDataObjectVtbl snapshot_vtable =
1639 snapshot_QueryInterface,
1643 snapshot_GetDataHere,
1644 snapshot_QueryGetData,
1645 snapshot_GetCanonicalFormatEtc,
1647 snapshot_EnumFormatEtc,
1650 snapshot_EnumDAdvise
1653 /*---------------------------------------------------------------------*
1654 * Internal implementation methods for the OLE clipboard
1655 *---------------------------------------------------------------------*/
1657 static snapshot *snapshot_construct(DWORD seq_no)
1661 This = HeapAlloc( GetProcessHeap(), 0, sizeof(*This) );
1662 if (!This) return NULL;
1664 This->IDataObject_iface.lpVtbl = &snapshot_vtable;
1666 This->seq_no = seq_no;
1672 /*********************************************************
1673 * register_clipboard_formats
1675 static void register_clipboard_formats(void)
1677 static const WCHAR OwnerLink[] = {'O','w','n','e','r','L','i','n','k',0};
1678 static const WCHAR FileName[] = {'F','i','l','e','N','a','m','e',0};
1679 static const WCHAR FileNameW[] = {'F','i','l','e','N','a','m','e','W',0};
1680 static const WCHAR DataObject[] = {'D','a','t','a','O','b','j','e','c','t',0};
1681 static const WCHAR EmbeddedObject[] = {'E','m','b','e','d','d','e','d',' ','O','b','j','e','c','t',0};
1682 static const WCHAR EmbedSource[] = {'E','m','b','e','d',' ','S','o','u','r','c','e',0};
1683 static const WCHAR CustomLinkSource[] = {'C','u','s','t','o','m',' ','L','i','n','k',' ','S','o','u','r','c','e',0};
1684 static const WCHAR LinkSource[] = {'L','i','n','k',' ','S','o','u','r','c','e',0};
1685 static const WCHAR ObjectDescriptor[] = {'O','b','j','e','c','t',' ','D','e','s','c','r','i','p','t','o','r',0};
1686 static const WCHAR LinkSourceDescriptor[] = {'L','i','n','k',' ','S','o','u','r','c','e',' ',
1687 'D','e','s','c','r','i','p','t','o','r',0};
1688 static const WCHAR OlePrivateData[] = {'O','l','e',' ','P','r','i','v','a','t','e',' ','D','a','t','a',0};
1690 static const WCHAR WineMarshalledDataObject[] = {'W','i','n','e',' ','M','a','r','s','h','a','l','l','e','d',' ',
1691 'D','a','t','a','O','b','j','e','c','t',0};
1693 ownerlink_clipboard_format = RegisterClipboardFormatW(OwnerLink);
1694 filename_clipboard_format = RegisterClipboardFormatW(FileName);
1695 filenameW_clipboard_format = RegisterClipboardFormatW(FileNameW);
1696 dataobject_clipboard_format = RegisterClipboardFormatW(DataObject);
1697 embedded_object_clipboard_format = RegisterClipboardFormatW(EmbeddedObject);
1698 embed_source_clipboard_format = RegisterClipboardFormatW(EmbedSource);
1699 custom_link_source_clipboard_format = RegisterClipboardFormatW(CustomLinkSource);
1700 link_source_clipboard_format = RegisterClipboardFormatW(LinkSource);
1701 object_descriptor_clipboard_format = RegisterClipboardFormatW(ObjectDescriptor);
1702 link_source_descriptor_clipboard_format = RegisterClipboardFormatW(LinkSourceDescriptor);
1703 ole_private_data_clipboard_format = RegisterClipboardFormatW(OlePrivateData);
1705 wine_marshal_clipboard_format = RegisterClipboardFormatW(WineMarshalledDataObject);
1708 /***********************************************************************
1709 * OLEClipbrd_Initialize()
1710 * Initializes the OLE clipboard.
1712 void OLEClipbrd_Initialize(void)
1714 register_clipboard_formats();
1716 if ( !theOleClipboard )
1718 ole_clipbrd* clipbrd;
1723 clipbrd = HeapAlloc( GetProcessHeap(), 0, sizeof(*clipbrd) );
1724 if (!clipbrd) return;
1726 clipbrd->latest_snapshot = NULL;
1727 clipbrd->window = NULL;
1728 clipbrd->src_data = NULL;
1729 clipbrd->cached_enum = NULL;
1731 h = GlobalAlloc(GMEM_DDESHARE | GMEM_MOVEABLE, 0);
1734 HeapFree(GetProcessHeap(), 0, clipbrd);
1738 if(FAILED(CreateStreamOnHGlobal(h, TRUE, &clipbrd->marshal_data)))
1741 HeapFree(GetProcessHeap(), 0, clipbrd);
1745 theOleClipboard = clipbrd;
1749 /***********************************************************************
1750 * OLEClipbrd_UnInitialize()
1751 * Un-Initializes the OLE clipboard
1753 void OLEClipbrd_UnInitialize(void)
1755 ole_clipbrd *clipbrd = theOleClipboard;
1761 static const WCHAR ole32W[] = {'o','l','e','3','2',0};
1762 HINSTANCE hinst = GetModuleHandleW(ole32W);
1764 if ( clipbrd->window )
1766 DestroyWindow(clipbrd->window);
1767 UnregisterClassW( clipbrd_wndclass, hinst );
1770 IStream_Release(clipbrd->marshal_data);
1771 if (clipbrd->src_data) IDataObject_Release(clipbrd->src_data);
1772 HeapFree(GetProcessHeap(), 0, clipbrd->cached_enum);
1773 HeapFree(GetProcessHeap(), 0, clipbrd);
1774 theOleClipboard = NULL;
1778 /*********************************************************************
1779 * set_clipboard_formats
1781 * Enumerate all formats supported by the source and make
1782 * those formats available using delayed rendering using SetClipboardData.
1783 * Cache the enumeration list and make that list visibile as the
1784 * 'Ole Private Data' format on the clipboard.
1787 static HRESULT set_clipboard_formats(ole_clipbrd *clipbrd, IDataObject *data)
1791 IEnumFORMATETC *enum_fmt;
1792 HGLOBAL priv_data_handle;
1793 DWORD_PTR target_offset;
1794 ole_priv_data *priv_data;
1795 DWORD count = 0, needed = sizeof(*priv_data), idx;
1797 hr = IDataObject_EnumFormatEtc(data, DATADIR_GET, &enum_fmt);
1798 if(FAILED(hr)) return hr;
1800 while(IEnumFORMATETC_Next(enum_fmt, 1, &fmt, NULL) == S_OK)
1803 needed += sizeof(priv_data->entries[0]);
1806 needed += fmt.ptd->tdSize;
1807 CoTaskMemFree(fmt.ptd);
1811 /* Windows pads the list with two empty ole_priv_data_entries, one
1812 * after the entries array and one after the target device data.
1813 * Allocating with zero init to zero these pads. */
1815 needed += sizeof(priv_data->entries[0]); /* initialisation of needed includes one of these. */
1816 priv_data_handle = GlobalAlloc(GMEM_DDESHARE | GMEM_MOVEABLE | GMEM_ZEROINIT, needed);
1817 priv_data = GlobalLock(priv_data_handle);
1819 priv_data->unk1 = 0;
1820 priv_data->size = needed;
1821 priv_data->unk2 = 1;
1822 priv_data->count = count;
1823 priv_data->unk3[0] = 0;
1824 priv_data->unk3[1] = 0;
1826 IEnumFORMATETC_Reset(enum_fmt);
1829 target_offset = FIELD_OFFSET(ole_priv_data, entries[count + 1]); /* count entries + one pad. */
1831 while(IEnumFORMATETC_Next(enum_fmt, 1, &fmt, NULL) == S_OK)
1833 TRACE("%s\n", dump_fmtetc(&fmt));
1835 priv_data->entries[idx].fmtetc = fmt;
1838 memcpy((char*)priv_data + target_offset, fmt.ptd, fmt.ptd->tdSize);
1839 priv_data->entries[idx].fmtetc.ptd = (DVTARGETDEVICE*)target_offset;
1840 target_offset += fmt.ptd->tdSize;
1841 CoTaskMemFree(fmt.ptd);
1844 priv_data->entries[idx].first_use = !find_format_in_list(priv_data->entries, idx, fmt.cfFormat);
1845 priv_data->entries[idx].unk[0] = 0;
1846 priv_data->entries[idx].unk[1] = 0;
1848 if (priv_data->entries[idx].first_use)
1849 SetClipboardData(fmt.cfFormat, NULL);
1854 IEnumFORMATETC_Release(enum_fmt);
1856 /* Cache the list and fixup any target device offsets to ptrs */
1857 clipbrd->cached_enum = HeapAlloc(GetProcessHeap(), 0, needed);
1858 memcpy(clipbrd->cached_enum, priv_data, needed);
1859 for(idx = 0; idx < clipbrd->cached_enum->count; idx++)
1860 clipbrd->cached_enum->entries[idx].fmtetc.ptd =
1861 td_offs_to_ptr(clipbrd->cached_enum, (DWORD_PTR)clipbrd->cached_enum->entries[idx].fmtetc.ptd);
1863 GlobalUnlock(priv_data_handle);
1864 if(!SetClipboardData(ole_private_data_clipboard_format, priv_data_handle))
1866 GlobalFree(priv_data_handle);
1867 return CLIPBRD_E_CANT_SET;
1873 static HWND create_clipbrd_window(void);
1875 /***********************************************************************
1876 * get_clipbrd_window
1878 static inline HRESULT get_clipbrd_window(ole_clipbrd *clipbrd, HWND *wnd)
1880 if ( !clipbrd->window )
1881 clipbrd->window = create_clipbrd_window();
1883 *wnd = clipbrd->window;
1884 return *wnd ? S_OK : E_FAIL;
1888 /**********************************************************************
1889 * release_marshal_data
1891 * Releases the data and sets the stream back to zero size.
1893 static inline void release_marshal_data(IStream *stm)
1896 ULARGE_INTEGER size;
1897 pos.QuadPart = size.QuadPart = 0;
1899 IStream_Seek(stm, pos, STREAM_SEEK_SET, NULL);
1900 CoReleaseMarshalData(stm);
1901 IStream_Seek(stm, pos, STREAM_SEEK_SET, NULL);
1902 IStream_SetSize(stm, size);
1905 /***********************************************************************
1906 * expose_marshalled_dataobject
1908 * Sets the marshalled dataobject to the clipboard. In the flushed case
1909 * we set a zero sized HGLOBAL to clear the old marshalled data.
1911 static HRESULT expose_marshalled_dataobject(ole_clipbrd *clipbrd, IDataObject *data)
1918 GetHGlobalFromStream(clipbrd->marshal_data, &h_stm);
1919 dup_global_mem(h_stm, GMEM_DDESHARE|GMEM_MOVEABLE, &h);
1922 h = GlobalAlloc(GMEM_DDESHARE|GMEM_MOVEABLE, 0);
1924 if(!h) return E_OUTOFMEMORY;
1926 if(!SetClipboardData(wine_marshal_clipboard_format, h))
1929 return CLIPBRD_E_CANT_SET;
1934 /***********************************************************************
1935 * set_src_dataobject
1937 * Clears and sets the clipboard's src IDataObject.
1939 * To marshal the source dataobject we do something rather different from Windows.
1940 * We set a clipboard format which contains the marshalled data.
1941 * Windows sets two window props one of which is an IID, the other is an endpoint number.
1943 static HRESULT set_src_dataobject(ole_clipbrd *clipbrd, IDataObject *data)
1948 if(FAILED(hr = get_clipbrd_window(clipbrd, &wnd))) return hr;
1950 if(clipbrd->src_data)
1952 release_marshal_data(clipbrd->marshal_data);
1954 IDataObject_Release(clipbrd->src_data);
1955 clipbrd->src_data = NULL;
1956 HeapFree(GetProcessHeap(), 0, clipbrd->cached_enum);
1957 clipbrd->cached_enum = NULL;
1964 IDataObject_AddRef(data);
1965 clipbrd->src_data = data;
1967 IDataObject_QueryInterface(data, &IID_IUnknown, (void**)&unk);
1968 hr = CoMarshalInterface(clipbrd->marshal_data, &IID_IDataObject, unk,
1969 MSHCTX_LOCAL, NULL, MSHLFLAGS_TABLESTRONG);
1970 IUnknown_Release(unk); /* Don't hold a ref on IUnknown, we have one on IDataObject. */
1971 if(FAILED(hr)) return hr;
1972 hr = set_clipboard_formats(clipbrd, data);
1977 /***********************************************************************
1980 static LRESULT CALLBACK clipbrd_wndproc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam)
1982 ole_clipbrd *clipbrd;
1984 get_ole_clipbrd(&clipbrd);
1988 case WM_RENDERFORMAT:
1991 ole_priv_data_entry *entry;
1993 TRACE("(): WM_RENDERFORMAT(cfFormat=%x)\n", cf);
1994 entry = find_format_in_list(clipbrd->cached_enum->entries, clipbrd->cached_enum->count, cf);
1997 render_format(clipbrd->src_data, &entry->fmtetc);
2002 case WM_RENDERALLFORMATS:
2005 ole_priv_data_entry *entries = clipbrd->cached_enum->entries;
2007 TRACE("(): WM_RENDERALLFORMATS\n");
2009 for(i = 0; i < clipbrd->cached_enum->count; i++)
2011 if(entries[i].first_use)
2012 render_format(clipbrd->src_data, &entries[i].fmtetc);
2017 case WM_DESTROYCLIPBOARD:
2019 TRACE("(): WM_DESTROYCLIPBOARD\n");
2021 set_src_dataobject(clipbrd, NULL);
2026 return DefWindowProcW(hwnd, message, wparam, lparam);
2033 /***********************************************************************
2034 * create_clipbrd_window
2036 static HWND create_clipbrd_window(void)
2039 static const WCHAR ole32W[] = {'o','l','e','3','2',0};
2040 static const WCHAR title[] = {'C','l','i','p','b','o','a','r','d','W','i','n','d','o','w',0};
2041 HINSTANCE hinst = GetModuleHandleW(ole32W);
2043 class.cbSize = sizeof(class);
2045 class.lpfnWndProc = clipbrd_wndproc;
2046 class.cbClsExtra = 0;
2047 class.cbWndExtra = 0;
2048 class.hInstance = hinst;
2051 class.hbrBackground = 0;
2052 class.lpszMenuName = NULL;
2053 class.lpszClassName = clipbrd_wndclass;
2054 class.hIconSm = NULL;
2056 RegisterClassExW(&class);
2058 return CreateWindowW(clipbrd_wndclass, title, WS_POPUP | WS_CLIPSIBLINGS | WS_OVERLAPPED,
2059 CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
2060 NULL, NULL, hinst, 0);
2063 /*********************************************************************
2064 * set_dataobject_format
2066 * Windows creates a 'DataObject' clipboard format that contains the
2067 * clipboard window's HWND or NULL if the Ole clipboard has been flushed.
2069 static HRESULT set_dataobject_format(HWND hwnd)
2071 HGLOBAL h = GlobalAlloc(GMEM_DDESHARE | GMEM_MOVEABLE, sizeof(hwnd));
2074 if(!h) return E_OUTOFMEMORY;
2076 data = GlobalLock(h);
2080 if(!SetClipboardData(dataobject_clipboard_format, h))
2083 return CLIPBRD_E_CANT_SET;
2089 /*---------------------------------------------------------------------*
2090 * Win32 OLE clipboard API
2091 *---------------------------------------------------------------------*/
2093 /***********************************************************************
2094 * OleSetClipboard [OLE32.@]
2095 * Places a pointer to the specified data object onto the clipboard,
2096 * making the data object accessible to the OleGetClipboard function.
2100 * S_OK IDataObject pointer placed on the clipboard
2101 * CLIPBRD_E_CANT_OPEN OpenClipboard failed
2102 * CLIPBRD_E_CANT_EMPTY EmptyClipboard failed
2103 * CLIPBRD_E_CANT_CLOSE CloseClipboard failed
2104 * CLIPBRD_E_CANT_SET SetClipboard failed
2107 HRESULT WINAPI OleSetClipboard(IDataObject* data)
2110 ole_clipbrd *clipbrd;
2113 TRACE("(%p)\n", data);
2115 if(FAILED(hr = get_ole_clipbrd(&clipbrd))) return hr;
2117 if(FAILED(hr = get_clipbrd_window(clipbrd, &wnd))) return hr;
2119 if ( !OpenClipboard(wnd) ) return CLIPBRD_E_CANT_OPEN;
2121 if ( !EmptyClipboard() )
2123 hr = CLIPBRD_E_CANT_EMPTY;
2127 hr = set_src_dataobject(clipbrd, data);
2128 if(FAILED(hr)) goto end;
2132 hr = expose_marshalled_dataobject(clipbrd, data);
2133 if(FAILED(hr)) goto end;
2134 hr = set_dataobject_format(wnd);
2139 if ( !CloseClipboard() ) hr = CLIPBRD_E_CANT_CLOSE;
2143 expose_marshalled_dataobject(clipbrd, NULL);
2144 set_src_dataobject(clipbrd, NULL);
2151 /***********************************************************************
2152 * OleGetClipboard [OLE32.@]
2153 * Returns a pointer to our internal IDataObject which represents the conceptual
2154 * state of the Windows clipboard. If the current clipboard already contains
2155 * an IDataObject, our internal IDataObject will delegate to this object.
2157 HRESULT WINAPI OleGetClipboard(IDataObject **obj)
2160 ole_clipbrd *clipbrd;
2163 TRACE("(%p)\n", obj);
2165 if(!obj) return E_INVALIDARG;
2167 if(FAILED(hr = get_ole_clipbrd(&clipbrd))) return hr;
2169 seq_no = GetClipboardSequenceNumber();
2170 if(clipbrd->latest_snapshot && clipbrd->latest_snapshot->seq_no != seq_no)
2171 clipbrd->latest_snapshot = NULL;
2173 if(!clipbrd->latest_snapshot)
2175 clipbrd->latest_snapshot = snapshot_construct(seq_no);
2176 if(!clipbrd->latest_snapshot) return E_OUTOFMEMORY;
2179 *obj = &clipbrd->latest_snapshot->IDataObject_iface;
2180 IDataObject_AddRef(*obj);
2185 /******************************************************************************
2186 * OleFlushClipboard [OLE32.@]
2187 * Renders the data from the source IDataObject into the windows clipboard
2189 * TODO: OleFlushClipboard needs to additionally handle TYMED_IStorage media
2190 * by copying the storage into global memory. Subsequently the default
2191 * data object exposed through OleGetClipboard must convert this TYMED_HGLOBAL
2192 * back to TYMED_IStorage.
2194 HRESULT WINAPI OleFlushClipboard(void)
2197 ole_clipbrd *clipbrd;
2202 if(FAILED(hr = get_ole_clipbrd(&clipbrd))) return hr;
2204 if(FAILED(hr = get_clipbrd_window(clipbrd, &wnd))) return hr;
2207 * Already flushed or no source DataObject? Nothing to do.
2209 if (!clipbrd->src_data) return S_OK;
2211 if (!OpenClipboard(wnd)) return CLIPBRD_E_CANT_OPEN;
2213 SendMessageW(wnd, WM_RENDERALLFORMATS, 0, 0);
2215 hr = set_dataobject_format(NULL);
2217 expose_marshalled_dataobject(clipbrd, NULL);
2218 set_src_dataobject(clipbrd, NULL);
2220 if ( !CloseClipboard() ) hr = CLIPBRD_E_CANT_CLOSE;
2226 /***********************************************************************
2227 * OleIsCurrentClipboard [OLE32.@]
2229 HRESULT WINAPI OleIsCurrentClipboard(IDataObject *data)
2232 ole_clipbrd *clipbrd;
2235 if(FAILED(hr = get_ole_clipbrd(&clipbrd))) return hr;
2237 if (data == NULL) return S_FALSE;
2239 return (data == clipbrd->src_data) ? S_OK : S_FALSE;