dlls/ole32/oleobj.c

   1 /*
   2  *      OLE2 COM objects
   3  *
   4  *      Copyright 1998 Eric Kohl
   5  *      Copyright 1999 Francis Beaudet
   6  *
   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.
  11  *
  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.
  16  *
  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
  20  */
  21
  22
  23 #include <stdarg.h>
  24 #include <string.h>
  25
  26 #define COBJMACROS
  27
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "winuser.h"
  31 #include "winerror.h"
  32 #include "wine/debug.h"
  33 #include "ole2.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(ole);
  36
  37 #define INITIAL_SINKS 10
  38
  39 /**************************************************************************
  40  *  OleAdviseHolderImpl Implementation
  41  */
  42 typedef struct OleAdviseHolderImpl
  43 {
  44   const IOleAdviseHolderVtbl *lpVtbl;
  45
  46   LONG ref;
  47
  48   DWORD         maxSinks;
  49   IAdviseSink** arrayOfSinks;
  50
  51 } OleAdviseHolderImpl;
  52
  53 static HRESULT EnumOleSTATDATA_Construct(OleAdviseHolderImpl *pOleAdviseHolder, ULONG index, IEnumSTATDATA **ppenum);
  54
  55 typedef struct
  56 {
  57     const IEnumSTATDATAVtbl *lpvtbl;
  58     LONG ref;
  59
  60     ULONG index;
  61     OleAdviseHolderImpl *pOleAdviseHolder;
  62 } EnumOleSTATDATA;
  63
  64 static HRESULT WINAPI EnumOleSTATDATA_QueryInterface(
  65     IEnumSTATDATA *iface, REFIID riid, void **ppv)
  66 {
  67     TRACE("(%s, %p)\n", debugstr_guid(riid), ppv);
  68     if (IsEqualIID(riid, &IID_IUnknown) ||
  69         IsEqualIID(riid, &IID_IEnumSTATDATA))
  70     {
  71         IUnknown_AddRef(iface);
  72         *ppv = iface;
  73         return S_OK;
  74     }
  75     return E_NOINTERFACE;
  76 }
  77
  78 static ULONG WINAPI EnumOleSTATDATA_AddRef(
  79     IEnumSTATDATA *iface)
  80 {
  81     EnumOleSTATDATA *This = (EnumOleSTATDATA *)iface;
  82     TRACE("()\n");
  83     return InterlockedIncrement(&This->ref);
  84 }
  85
  86 static ULONG WINAPI EnumOleSTATDATA_Release(
  87     IEnumSTATDATA *iface)
  88 {
  89     EnumOleSTATDATA *This = (EnumOleSTATDATA *)iface;
  90     LONG refs = InterlockedDecrement(&This->ref);
  91     TRACE("()\n");
  92     if (!refs)
  93     {
  94         IOleAdviseHolder_Release((IOleAdviseHolder *)This->pOleAdviseHolder);
  95         HeapFree(GetProcessHeap(), 0, This);
  96     }
  97     return refs;
  98 }
  99
 100 static HRESULT WINAPI EnumOleSTATDATA_Next(
 101     IEnumSTATDATA *iface, ULONG celt, LPSTATDATA rgelt,
 102     ULONG *pceltFetched)
 103 {
 104     EnumOleSTATDATA *This = (EnumOleSTATDATA *)iface;
 105     HRESULT hr = S_OK;
 106
 107     TRACE("(%d, %p, %p)\n", celt, rgelt, pceltFetched);
 108
 109     if (pceltFetched)
 110         *pceltFetched = 0;
 111
 112     for (; celt; celt--, rgelt++)
 113     {
 114         while ((This->index < This->pOleAdviseHolder->maxSinks) &&
 115                !This->pOleAdviseHolder->arrayOfSinks[This->index])
 116         {
 117             This->index++;
 118         }
 119         if (This->index >= This->pOleAdviseHolder->maxSinks)
 120         {
 121             hr = S_FALSE;
 122             break;
 123         }
 124
 125         memset(&rgelt->formatetc, 0, sizeof(rgelt->formatetc));
 126         rgelt->advf = 0;
 127         rgelt->pAdvSink = This->pOleAdviseHolder->arrayOfSinks[This->index];
 128         IAdviseSink_AddRef(rgelt->pAdvSink);
 129         rgelt->dwConnection = This->index;
 130
 131         if (pceltFetched)
 132             (*pceltFetched)++;
 133         This->index++;
 134     }
 135     return hr;
 136 }
 137
 138 static HRESULT WINAPI EnumOleSTATDATA_Skip(
 139     IEnumSTATDATA *iface, ULONG celt)
 140 {
 141     EnumOleSTATDATA *This = (EnumOleSTATDATA *)iface;
 142
 143     TRACE("(%d)\n", celt);
 144
 145     for (; celt; celt--)
 146     {
 147         while ((This->index < This->pOleAdviseHolder->maxSinks) &&
 148                !This->pOleAdviseHolder->arrayOfSinks[This->index])
 149         {
 150             This->index++;
 151         }
 152         if (This->index >= This->pOleAdviseHolder->maxSinks)
 153             return S_FALSE;
 154         This->index++;
 155     }
 156     return S_OK;
 157 }
 158
 159 static HRESULT WINAPI EnumOleSTATDATA_Reset(
 160     IEnumSTATDATA *iface)
 161 {
 162     EnumOleSTATDATA *This = (EnumOleSTATDATA *)iface;
 163
 164     TRACE("()\n");
 165
 166     This->index = 0;
 167     return S_OK;
 168 }
 169
 170 static HRESULT WINAPI EnumOleSTATDATA_Clone(
 171     IEnumSTATDATA *iface,
 172     IEnumSTATDATA **ppenum)
 173 {
 174     EnumOleSTATDATA *This = (EnumOleSTATDATA *)iface;
 175     return EnumOleSTATDATA_Construct(This->pOleAdviseHolder, This->index, ppenum);
 176 }
 177
 178 static const IEnumSTATDATAVtbl EnumOleSTATDATA_VTable =
 179 {
 180     EnumOleSTATDATA_QueryInterface,
 181     EnumOleSTATDATA_AddRef,
 182     EnumOleSTATDATA_Release,
 183     EnumOleSTATDATA_Next,
 184     EnumOleSTATDATA_Skip,
 185     EnumOleSTATDATA_Reset,
 186     EnumOleSTATDATA_Clone
 187 };
 188
 189 static HRESULT EnumOleSTATDATA_Construct(OleAdviseHolderImpl *pOleAdviseHolder, ULONG index, IEnumSTATDATA **ppenum)
 190 {
 191     EnumOleSTATDATA *This = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
 192     if (!This)
 193         return E_OUTOFMEMORY;
 194     This->lpvtbl = &EnumOleSTATDATA_VTable;
 195     This->ref = 1;
 196     This->index = index;
 197     This->pOleAdviseHolder = pOleAdviseHolder;
 198     IOleAdviseHolder_AddRef((IOleAdviseHolder *)pOleAdviseHolder);
 199     *ppenum = (IEnumSTATDATA *)&This->lpvtbl;
 200     return S_OK;
 201 }
 202
 203 /**************************************************************************
 204  *  OleAdviseHolderImpl_Destructor
 205  */
 206 static void OleAdviseHolderImpl_Destructor(
 207   OleAdviseHolderImpl* ptrToDestroy)
 208 {
 209   DWORD index;
 210   TRACE("%p\n", ptrToDestroy);
 211
 212   for (index = 0; index < ptrToDestroy->maxSinks; index++)
 213   {
 214     if (ptrToDestroy->arrayOfSinks[index]!=0)
 215     {
 216       IAdviseSink_Release(ptrToDestroy->arrayOfSinks[index]);
 217       ptrToDestroy->arrayOfSinks[index] = NULL;
 218     }
 219   }
 220
 221   HeapFree(GetProcessHeap(),
 222            0,
 223            ptrToDestroy->arrayOfSinks);
 224
 225
 226   HeapFree(GetProcessHeap(),
 227            0,
 228            ptrToDestroy);
 229 }
 230
 231 /**************************************************************************
 232  *  OleAdviseHolderImpl_QueryInterface
 233  */
 234 static HRESULT WINAPI OleAdviseHolderImpl_QueryInterface(
 235   LPOLEADVISEHOLDER iface,
 236   REFIID            riid,
 237   LPVOID*           ppvObj)
 238 {
 239   OleAdviseHolderImpl *This = (OleAdviseHolderImpl *)iface;
 240   TRACE("(%p)->(%s,%p)\n",This,debugstr_guid(riid),ppvObj);
 241   /*
 242    * Sanity check
 243    */
 244   if (ppvObj==NULL)
 245     return E_POINTER;
 246
 247   *ppvObj = NULL;
 248
 249   if (IsEqualIID(riid, &IID_IUnknown))
 250   {
 251     /* IUnknown */
 252     *ppvObj = This;
 253   }
 254   else if(IsEqualIID(riid, &IID_IOleAdviseHolder))
 255   {
 256     /* IOleAdviseHolder */
 257     *ppvObj = (IOleAdviseHolder*) This;
 258   }
 259
 260   if(*ppvObj == NULL)
 261     return E_NOINTERFACE;
 262
 263   /*
 264    * A successful QI always increments the reference count.
 265    */
 266   IUnknown_AddRef((IUnknown*)*ppvObj);
 267
 268   return S_OK;
 269 }
 270
 271 /******************************************************************************
 272  * OleAdviseHolderImpl_AddRef
 273  */
 274 static ULONG WINAPI OleAdviseHolderImpl_AddRef(
 275   LPOLEADVISEHOLDER iface)
 276 {
 277   OleAdviseHolderImpl *This = (OleAdviseHolderImpl *)iface;
 278   ULONG ref = InterlockedIncrement(&This->ref);
 279
 280   TRACE("(%p)->(ref=%d)\n", This, ref - 1);
 281
 282   return ref;
 283 }
 284
 285 /******************************************************************************
 286  * OleAdviseHolderImpl_Release
 287  */
 288 static ULONG WINAPI OleAdviseHolderImpl_Release(
 289   LPOLEADVISEHOLDER iface)
 290 {
 291   OleAdviseHolderImpl *This = (OleAdviseHolderImpl *)iface;
 292   ULONG ref;
 293   TRACE("(%p)->(ref=%d)\n", This, This->ref);
 294   ref = InterlockedDecrement(&This->ref);
 295
 296   if (ref == 0) OleAdviseHolderImpl_Destructor(This);
 297
 298   return ref;
 299 }
 300
 301 /******************************************************************************
 302  * OleAdviseHolderImpl_Advise
 303  */
 304 static HRESULT WINAPI OleAdviseHolderImpl_Advise(
 305   LPOLEADVISEHOLDER iface,
 306   IAdviseSink*      pAdvise,
 307   DWORD*            pdwConnection)
 308 {
 309   DWORD index;
 310
 311   OleAdviseHolderImpl *This = (OleAdviseHolderImpl *)iface;
 312
 313   TRACE("(%p)->(%p, %p)\n", This, pAdvise, pdwConnection);
 314
 315   /*
 316    * Sanity check
 317    */
 318   if (pdwConnection==NULL)
 319     return E_POINTER;
 320
 321   *pdwConnection = 0;
 322
 323   /*
 324    * Find a free spot in the array.
 325    */
 326   for (index = 0; index < This->maxSinks; index++)
 327   {
 328     if (This->arrayOfSinks[index]==NULL)
 329       break;
 330   }
 331
 332   /*
 333    * If the array is full, we need to grow it.
 334    */
 335   if (index == This->maxSinks)
 336   {
 337     DWORD i;
 338
 339     This->maxSinks+=INITIAL_SINKS;
 340
 341     This->arrayOfSinks = HeapReAlloc(GetProcessHeap(),
 342                                      0,
 343                                      This->arrayOfSinks,
 344                                      This->maxSinks*sizeof(IAdviseSink*));
 345
 346     for (i=index;i < This->maxSinks; i++)
 347       This->arrayOfSinks[i]=0;
 348   }
 349
 350   /*
 351    * Store the new sink
 352    */
 353   This->arrayOfSinks[index] = pAdvise;
 354
 355   if (This->arrayOfSinks[index]!=NULL)
 356     IAdviseSink_AddRef(This->arrayOfSinks[index]);
 357
 358   /*
 359    * Return the index as the cookie.
 360    * Since 0 is not a valid cookie, we will increment by
 361    * 1 the index in the table.
 362    */
 363   *pdwConnection = index+1;
 364
 365   return S_OK;
 366 }
 367
 368 /******************************************************************************
 369  * OleAdviseHolderImpl_Unadvise
 370  */
 371 static HRESULT WINAPI OleAdviseHolderImpl_Unadvise(
 372   LPOLEADVISEHOLDER iface,
 373   DWORD             dwConnection)
 374 {
 375   OleAdviseHolderImpl *This = (OleAdviseHolderImpl *)iface;
 376
 377   TRACE("(%p)->(%u)\n", This, dwConnection);
 378
 379   /*
 380    * So we don't return 0 as a cookie, the index was
 381    * incremented by 1 in OleAdviseHolderImpl_Advise
 382    * we have to compensate.
 383    */
 384   dwConnection--;
 385
 386   /*
 387    * Check for invalid cookies.
 388    */
 389   if (dwConnection >= This->maxSinks)
 390     return OLE_E_NOCONNECTION;
 391
 392   if (This->arrayOfSinks[dwConnection] == NULL)
 393     return OLE_E_NOCONNECTION;
 394
 395   /*
 396    * Release the sink and mark the spot in the list as free.
 397    */
 398   IAdviseSink_Release(This->arrayOfSinks[dwConnection]);
 399   This->arrayOfSinks[dwConnection] = NULL;
 400
 401   return S_OK;
 402 }
 403
 404 /******************************************************************************
 405  * OleAdviseHolderImpl_EnumAdvise
 406  */
 407 static HRESULT WINAPI
 408 OleAdviseHolderImpl_EnumAdvise (LPOLEADVISEHOLDER iface, IEnumSTATDATA **ppenumAdvise)
 409 {
 410     OleAdviseHolderImpl *This = (OleAdviseHolderImpl *)iface;
 411
 412     TRACE("(%p)->(%p)\n", This, ppenumAdvise);
 413
 414     *ppenumAdvise = NULL;
 415
 416     return EnumOleSTATDATA_Construct(This, 0, ppenumAdvise);
 417 }
 418
 419 /******************************************************************************
 420  * OleAdviseHolderImpl_SendOnRename
 421  */
 422 static HRESULT WINAPI
 423 OleAdviseHolderImpl_SendOnRename (LPOLEADVISEHOLDER iface, IMoniker *pmk)
 424 {
 425     IEnumSTATDATA *pEnum;
 426     HRESULT hr;
 427
 428     TRACE("(%p)->(%p)\n", iface, pmk);
 429
 430     hr = IOleAdviseHolder_EnumAdvise(iface, &pEnum);
 431     if (SUCCEEDED(hr))
 432     {
 433         STATDATA statdata;
 434         while (IEnumSTATDATA_Next(pEnum, 1, &statdata, NULL) == S_OK)
 435         {
 436             IAdviseSink_OnRename(statdata.pAdvSink, pmk);
 437
 438             IAdviseSink_Release(statdata.pAdvSink);
 439         }
 440         IEnumSTATDATA_Release(pEnum);
 441     }
 442
 443     return hr;
 444 }
 445
 446 /******************************************************************************
 447  * OleAdviseHolderImpl_SendOnSave
 448  */
 449 static HRESULT WINAPI
 450 OleAdviseHolderImpl_SendOnSave (LPOLEADVISEHOLDER iface)
 451 {
 452     IEnumSTATDATA *pEnum;
 453     HRESULT hr;
 454
 455     TRACE("(%p)->()\n", iface);
 456
 457     hr = IOleAdviseHolder_EnumAdvise(iface, &pEnum);
 458     if (SUCCEEDED(hr))
 459     {
 460         STATDATA statdata;
 461         while (IEnumSTATDATA_Next(pEnum, 1, &statdata, NULL) == S_OK)
 462         {
 463             IAdviseSink_OnSave(statdata.pAdvSink);
 464
 465             IAdviseSink_Release(statdata.pAdvSink);
 466         }
 467         IEnumSTATDATA_Release(pEnum);
 468     }
 469
 470     return hr;
 471 }
 472
 473 /******************************************************************************
 474  * OleAdviseHolderImpl_SendOnClose
 475  */
 476 static HRESULT WINAPI
 477 OleAdviseHolderImpl_SendOnClose (LPOLEADVISEHOLDER iface)
 478 {
 479     IEnumSTATDATA *pEnum;
 480     HRESULT hr;
 481
 482     TRACE("(%p)->()\n", iface);
 483
 484     hr = IOleAdviseHolder_EnumAdvise(iface, &pEnum);
 485     if (SUCCEEDED(hr))
 486     {
 487         STATDATA statdata;
 488         while (IEnumSTATDATA_Next(pEnum, 1, &statdata, NULL) == S_OK)
 489         {
 490             IAdviseSink_OnClose(statdata.pAdvSink);
 491
 492             IAdviseSink_Release(statdata.pAdvSink);
 493         }
 494         IEnumSTATDATA_Release(pEnum);
 495     }
 496
 497     return hr;
 498 }
 499
 500 /**************************************************************************
 501  *  OleAdviseHolderImpl_VTable
 502  */
 503 static const IOleAdviseHolderVtbl oahvt =
 504 {
 505     OleAdviseHolderImpl_QueryInterface,
 506     OleAdviseHolderImpl_AddRef,
 507     OleAdviseHolderImpl_Release,
 508     OleAdviseHolderImpl_Advise,
 509     OleAdviseHolderImpl_Unadvise,
 510     OleAdviseHolderImpl_EnumAdvise,
 511     OleAdviseHolderImpl_SendOnRename,
 512     OleAdviseHolderImpl_SendOnSave,
 513     OleAdviseHolderImpl_SendOnClose
 514 };
 515
 516 /**************************************************************************
 517  *  OleAdviseHolderImpl_Constructor
 518  */
 519
 520 static LPOLEADVISEHOLDER OleAdviseHolderImpl_Constructor(void)
 521 {
 522   OleAdviseHolderImpl* lpoah;
 523   DWORD                index;
 524
 525   lpoah = HeapAlloc(GetProcessHeap(), 0, sizeof(OleAdviseHolderImpl));
 526
 527   lpoah->lpVtbl = &oahvt;
 528   lpoah->ref = 1;
 529   lpoah->maxSinks = INITIAL_SINKS;
 530   lpoah->arrayOfSinks = HeapAlloc(GetProcessHeap(),
 531                                   0,
 532                                   lpoah->maxSinks * sizeof(IAdviseSink*));
 533
 534   for (index = 0; index < lpoah->maxSinks; index++)
 535     lpoah->arrayOfSinks[index]=0;
 536
 537   TRACE("returning %p\n", lpoah);
 538   return (LPOLEADVISEHOLDER)lpoah;
 539 }
 540
 541 /**************************************************************************
 542  *  DataAdviseHolder Implementation
 543  */
 544 typedef struct DataAdviseConnection {
 545   IAdviseSink *sink;
 546   FORMATETC fmat;
 547   DWORD advf;
 548   DWORD remote_connection;
 549 } DataAdviseConnection;
 550
 551 typedef struct DataAdviseHolder
 552 {
 553   const IDataAdviseHolderVtbl *lpVtbl;
 554
 555   LONG                  ref;
 556   DWORD                 maxCons;
 557   DataAdviseConnection* Connections;
 558   IDataObject*          delegate;
 559 } DataAdviseHolder;
 560
 561 /* this connection has also has been advised to the delegate data object */
 562 #define WINE_ADVF_REMOTE 0x80000000
 563
 564 /******************************************************************************
 565  * DataAdviseHolder_Destructor
 566  */
 567 static void DataAdviseHolder_Destructor(DataAdviseHolder* ptrToDestroy)
 568 {
 569   DWORD index;
 570   TRACE("%p\n", ptrToDestroy);
 571
 572   for (index = 0; index < ptrToDestroy->maxCons; index++)
 573   {
 574     if (ptrToDestroy->Connections[index].sink != NULL)
 575     {
 576       if (ptrToDestroy->delegate &&
 577           (ptrToDestroy->Connections[index].advf & WINE_ADVF_REMOTE))
 578         IDataObject_DUnadvise(ptrToDestroy->delegate,
 579           ptrToDestroy->Connections[index].remote_connection);
 580
 581       IAdviseSink_Release(ptrToDestroy->Connections[index].sink);
 582       ptrToDestroy->Connections[index].sink = NULL;
 583     }
 584   }
 585
 586   HeapFree(GetProcessHeap(), 0, ptrToDestroy->Connections);
 587   HeapFree(GetProcessHeap(), 0, ptrToDestroy);
 588 }
 589
 590 /************************************************************************
 591  * DataAdviseHolder_QueryInterface (IUnknown)
 592  *
 593  * See Windows documentation for more details on IUnknown methods.
 594  */
 595 static HRESULT WINAPI DataAdviseHolder_QueryInterface(
 596   IDataAdviseHolder*      iface,
 597   REFIID                  riid,
 598   void**                  ppvObject)
 599 {
 600   DataAdviseHolder *This = (DataAdviseHolder *)iface;
 601   TRACE("(%p)->(%s,%p)\n",This,debugstr_guid(riid),ppvObject);
 602   /*
 603    * Perform a sanity check on the parameters.
 604    */
 605   if ( (This==0) || (ppvObject==0) )
 606     return E_INVALIDARG;
 607
 608   /*
 609    * Initialize the return parameter.
 610    */
 611   *ppvObject = 0;
 612
 613   /*
 614    * Compare the riid with the interface IDs implemented by this object.
 615    */
 616   if ( (memcmp(&IID_IUnknown, riid, sizeof(IID_IUnknown)) == 0) ||
 617        (memcmp(&IID_IDataAdviseHolder, riid, sizeof(IID_IDataAdviseHolder)) == 0)  )
 618   {
 619     *ppvObject = iface;
 620   }
 621
 622   /*
 623    * Check that we obtained an interface.
 624    */
 625   if ((*ppvObject)==0)
 626   {
 627     return E_NOINTERFACE;
 628   }
 629
 630   /*
 631    * Query Interface always increases the reference count by one when it is
 632    * successful.
 633    */
 634   IUnknown_AddRef((IUnknown*)*ppvObject);
 635
 636   return S_OK;
 637 }
 638
 639 /************************************************************************
 640  * DataAdviseHolder_AddRef (IUnknown)
 641  *
 642  * See Windows documentation for more details on IUnknown methods.
 643  */
 644 static ULONG WINAPI       DataAdviseHolder_AddRef(
 645   IDataAdviseHolder*      iface)
 646 {
 647   DataAdviseHolder *This = (DataAdviseHolder *)iface;
 648   TRACE("(%p) (ref=%d)\n", This, This->ref);
 649   return InterlockedIncrement(&This->ref);
 650 }
 651
 652 /************************************************************************
 653  * DataAdviseHolder_Release (IUnknown)
 654  *
 655  * See Windows documentation for more details on IUnknown methods.
 656  */
 657 static ULONG WINAPI DataAdviseHolder_Release(
 658   IDataAdviseHolder*      iface)
 659 {
 660   DataAdviseHolder *This = (DataAdviseHolder *)iface;
 661   ULONG ref;
 662   TRACE("(%p) (ref=%d)\n", This, This->ref);
 663
 664   /*
 665    * Decrease the reference count on this object.
 666    */
 667   ref = InterlockedDecrement(&This->ref);
 668
 669   /*
 670    * If the reference count goes down to 0, perform suicide.
 671    */
 672   if (ref==0) DataAdviseHolder_Destructor(This);
 673
 674   return ref;
 675 }
 676
 677 /************************************************************************
 678  * DataAdviseHolder_Advise
 679  *
 680  */
 681 static HRESULT WINAPI DataAdviseHolder_Advise(
 682   IDataAdviseHolder*      iface,
 683   IDataObject*            pDataObject,
 684   FORMATETC*              pFetc,
 685   DWORD                   advf,
 686   IAdviseSink*            pAdvise,
 687   DWORD*                  pdwConnection)
 688 {
 689   DWORD index;
 690
 691   DataAdviseHolder *This = (DataAdviseHolder *)iface;
 692
 693   TRACE("(%p)->(%p, %p, %08x, %p, %p)\n", This, pDataObject, pFetc, advf,
 694         pAdvise, pdwConnection);
 695   /*
 696    * Sanity check
 697    */
 698   if (pdwConnection==NULL)
 699     return E_POINTER;
 700
 701   *pdwConnection = 0;
 702
 703   /*
 704    * Find a free spot in the array.
 705    */
 706   for (index = 0; index < This->maxCons; index++)
 707   {
 708     if (This->Connections[index].sink == NULL)
 709       break;
 710   }
 711
 712   /*
 713    * If the array is full, we need to grow it.
 714    */
 715   if (index == This->maxCons)
 716   {
 717     This->maxCons+=INITIAL_SINKS;
 718     This->Connections = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
 719                                     This->Connections,
 720                                     This->maxCons*sizeof(DataAdviseConnection));
 721   }
 722   /*
 723    * Store the new sink
 724    */
 725   This->Connections[index].sink = pAdvise;
 726   This->Connections[index].advf = advf & ~WINE_ADVF_REMOTE;
 727   memcpy(&(This->Connections[index].fmat), pFetc, sizeof(FORMATETC));
 728   if (pFetc->ptd)
 729   {
 730     This->Connections[index].fmat.ptd = CoTaskMemAlloc(pFetc->ptd->tdSize);
 731     if (!This->Connections[index].fmat.ptd)
 732     {
 733       IDataAdviseHolder_Unadvise(iface, index + 1);
 734       return E_OUTOFMEMORY;
 735     }
 736     memcpy(This->Connections[index].fmat.ptd, pFetc->ptd, pFetc->ptd->tdSize);
 737   }
 738
 739   if (This->Connections[index].sink != NULL) {
 740     IAdviseSink_AddRef(This->Connections[index].sink);
 741
 742     /* if we are already connected advise the remote object */
 743     if (This->delegate)
 744     {
 745         HRESULT hr;
 746
 747         hr = IDataObject_DAdvise(This->delegate, &This->Connections[index].fmat,
 748                                  This->Connections[index].advf,
 749                                  This->Connections[index].sink,
 750                                  &This->Connections[index].remote_connection);
 751         if (FAILED(hr))
 752         {
 753             IDataAdviseHolder_Unadvise(iface, index + 1);
 754             return hr;
 755         }
 756         This->Connections[index].advf |= WINE_ADVF_REMOTE;
 757     }
 758     else if(advf & ADVF_PRIMEFIRST)
 759       /* only do this if we have no delegate, since in the above case the
 760        * delegate will do the priming for us */
 761       IDataAdviseHolder_SendOnDataChange(iface, pDataObject, 0, advf);
 762   }
 763   /*
 764    * Return the index as the cookie.
 765    * Since 0 is not a valid cookie, we will increment by
 766    * 1 the index in the table.
 767    */
 768   *pdwConnection = index+1;
 769
 770   return S_OK;
 771 }
 772
 773 /******************************************************************************
 774  * DataAdviseHolder_Unadvise
 775  */
 776 static HRESULT WINAPI     DataAdviseHolder_Unadvise(
 777   IDataAdviseHolder*      iface,
 778   DWORD                   dwConnection)
 779 {
 780   DataAdviseHolder *This = (DataAdviseHolder *)iface;
 781
 782   TRACE("(%p)->(%u)\n", This, dwConnection);
 783
 784   /*
 785    * So we don't return 0 as a cookie, the index was
 786    * incremented by 1 in OleAdviseHolderImpl_Advise
 787    * we have to compensate.
 788    */
 789   dwConnection--;
 790
 791   /*
 792    * Check for invalid cookies.
 793    */
 794   if (dwConnection >= This->maxCons)
 795     return OLE_E_NOCONNECTION;
 796
 797   if (This->Connections[dwConnection].sink == NULL)
 798     return OLE_E_NOCONNECTION;
 799
 800   if (This->delegate && This->Connections[dwConnection].advf & WINE_ADVF_REMOTE)
 801     IDataObject_DUnadvise(This->delegate,
 802       This->Connections[dwConnection].remote_connection);
 803
 804   /*
 805    * Release the sink and mark the spot in the list as free.
 806    */
 807   IAdviseSink_Release(This->Connections[dwConnection].sink);
 808   memset(&(This->Connections[dwConnection]), 0, sizeof(DataAdviseConnection));
 809
 810   return S_OK;
 811 }
 812
 813 static HRESULT WINAPI     DataAdviseHolder_EnumAdvise(
 814   IDataAdviseHolder*      iface,
 815   IEnumSTATDATA**         ppenumAdvise)
 816 {
 817   DataAdviseHolder *This = (DataAdviseHolder *)iface;
 818
 819   FIXME("(%p)->(%p)\n", This, ppenumAdvise);
 820   return E_NOTIMPL;
 821 }
 822
 823 /******************************************************************************
 824  * DataAdviseHolder_SendOnDataChange
 825  */
 826 static HRESULT WINAPI     DataAdviseHolder_SendOnDataChange(
 827   IDataAdviseHolder*      iface,
 828   IDataObject*            pDataObject,
 829   DWORD                   dwReserved,
 830   DWORD                   advf)
 831 {
 832   DataAdviseHolder *This = (DataAdviseHolder *)iface;
 833   DWORD index;
 834   STGMEDIUM stg;
 835   HRESULT res;
 836
 837   TRACE("(%p)->(%p,%08x,%08x)\n", This, pDataObject, dwReserved, advf);
 838
 839   for(index = 0; index < This->maxCons; index++) {
 840     if(This->Connections[index].sink != NULL) {
 841       memset(&stg, 0, sizeof(stg));
 842       if(!(This->Connections[index].advf & ADVF_NODATA)) {
 843         TRACE("Calling IDataObject_GetData\n");
 844         res = IDataObject_GetData(pDataObject,
 845                                   &(This->Connections[index].fmat),
 846                                   &stg);
 847         TRACE("returns %08x\n", res);
 848       }
 849       TRACE("Calling IAdviseSink_OnDataChange\n");
 850       IAdviseSink_OnDataChange(This->Connections[index].sink,
 851                                      &(This->Connections[index].fmat),
 852                                      &stg);
 853       TRACE("Done IAdviseSink_OnDataChange\n");
 854       if(This->Connections[index].advf & ADVF_ONLYONCE) {
 855         TRACE("Removing connection\n");
 856         DataAdviseHolder_Unadvise(iface, index+1);
 857       }
 858     }
 859   }
 860   return S_OK;
 861 }
 862
 863 /**************************************************************************
 864  *  DataAdviseHolderImpl_VTable
 865  */
 866 static const IDataAdviseHolderVtbl DataAdviseHolderImpl_VTable =
 867 {
 868   DataAdviseHolder_QueryInterface,
 869   DataAdviseHolder_AddRef,
 870   DataAdviseHolder_Release,
 871   DataAdviseHolder_Advise,
 872   DataAdviseHolder_Unadvise,
 873   DataAdviseHolder_EnumAdvise,
 874   DataAdviseHolder_SendOnDataChange
 875 };
 876
 877 HRESULT DataAdviseHolder_OnConnect(IDataAdviseHolder *iface, IDataObject *pDelegate)
 878 {
 879   DataAdviseHolder *This = (DataAdviseHolder *)iface;
 880   DWORD index;
 881   HRESULT hr = S_OK;
 882
 883   for(index = 0; index < This->maxCons; index++)
 884   {
 885     if(This->Connections[index].sink != NULL)
 886     {
 887       hr = IDataObject_DAdvise(pDelegate, &This->Connections[index].fmat,
 888                                This->Connections[index].advf,
 889                                This->Connections[index].sink,
 890                                &This->Connections[index].remote_connection);
 891       if (FAILED(hr)) break;
 892       This->Connections[index].advf |= WINE_ADVF_REMOTE;
 893     }
 894   }
 895   This->delegate = pDelegate;
 896   return hr;
 897 }
 898
 899 void DataAdviseHolder_OnDisconnect(IDataAdviseHolder *iface)
 900 {
 901   DataAdviseHolder *This = (DataAdviseHolder *)iface;
 902   DWORD index;
 903
 904   for(index = 0; index < This->maxCons; index++)
 905   {
 906     if((This->Connections[index].sink != NULL) &&
 907        (This->Connections[index].advf & WINE_ADVF_REMOTE))
 908     {
 909       IDataObject_DUnadvise(This->delegate,
 910         This->Connections[index].remote_connection);
 911       This->Connections[index].advf &= ~WINE_ADVF_REMOTE;
 912     }
 913   }
 914   This->delegate = NULL;
 915 }
 916
 917 /******************************************************************************
 918  * DataAdviseHolder_Constructor
 919  */
 920 static IDataAdviseHolder* DataAdviseHolder_Constructor(void)
 921 {
 922   DataAdviseHolder* newHolder;
 923
 924   newHolder = HeapAlloc(GetProcessHeap(), 0, sizeof(DataAdviseHolder));
 925
 926   newHolder->lpVtbl = &DataAdviseHolderImpl_VTable;
 927   newHolder->ref = 1;
 928   newHolder->maxCons = INITIAL_SINKS;
 929   newHolder->Connections = HeapAlloc(GetProcessHeap(),
 930                                      HEAP_ZERO_MEMORY,
 931                                      newHolder->maxCons *
 932                                      sizeof(DataAdviseConnection));
 933   newHolder->delegate = NULL;
 934
 935   TRACE("returning %p\n", newHolder);
 936   return (IDataAdviseHolder*)newHolder;
 937 }
 938
 939 /***********************************************************************
 940  * API functions
 941  */
 942
 943 /***********************************************************************
 944  * CreateOleAdviseHolder [OLE32.@]
 945  */
 946 HRESULT WINAPI CreateOleAdviseHolder(
 947   LPOLEADVISEHOLDER *ppOAHolder)
 948 {
 949   TRACE("(%p)\n", ppOAHolder);
 950
 951   /*
 952    * Sanity check,
 953    */
 954   if (ppOAHolder==NULL)
 955     return E_POINTER;
 956
 957   *ppOAHolder = OleAdviseHolderImpl_Constructor ();
 958
 959   if (*ppOAHolder != NULL)
 960     return S_OK;
 961
 962   return E_OUTOFMEMORY;
 963 }
 964
 965 /******************************************************************************
 966  *              CreateDataAdviseHolder        [OLE32.@]
 967  */
 968 HRESULT WINAPI CreateDataAdviseHolder(
 969   LPDATAADVISEHOLDER* ppDAHolder)
 970 {
 971   TRACE("(%p)\n", ppDAHolder);
 972
 973   /*
 974    * Sanity check,
 975    */
 976   if (ppDAHolder==NULL)
 977     return E_POINTER;
 978
 979   *ppDAHolder = DataAdviseHolder_Constructor();
 980
 981   if (*ppDAHolder != NULL)
 982     return S_OK;
 983
 984   return E_OUTOFMEMORY;
 985 }