dlls/devenum/mediacatenum.c

   1 /*
   2  *      IEnumMoniker implementation for DEVENUM.dll
   3  *
   4  * Copyright (C) 2002 Robert Shearman
   5  *
   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.
  10  *
  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.
  15  *
  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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  *
  20  * NOTES ON THIS FILE:
  21  * - Implements IEnumMoniker interface which enumerates through moniker
  22  *   objects created from HKEY_CLASSES/CLSID/{DEVICE_CLSID}/Instance
  23  */
  24
  25 #include "devenum_private.h"
  26 #include "vfwmsgs.h"
  27 #include "oleauto.h"
  28 #include "ocidl.h"
  29
  30 #include "wine/debug.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(devenum);
  33
  34 static ULONG WINAPI DEVENUM_IEnumMoniker_AddRef(LPENUMMONIKER iface);
  35 static ULONG WINAPI DEVENUM_IMediaCatMoniker_AddRef(LPMONIKER iface);
  36 static ULONG WINAPI DEVENUM_IPropertyBag_AddRef(LPPROPERTYBAG iface);
  37
  38 typedef struct
  39 {
  40     const IPropertyBagVtbl *lpVtbl;
  41     LONG ref;
  42     HKEY hkey;
  43 } RegPropBagImpl;
  44
  45
  46 static HRESULT WINAPI DEVENUM_IPropertyBag_QueryInterface(
  47     LPPROPERTYBAG iface,
  48     REFIID riid,
  49     LPVOID *ppvObj)
  50 {
  51     RegPropBagImpl *This = (RegPropBagImpl *)iface;
  52     TRACE("\n\tIID:\t%s\n",debugstr_guid(riid));
  53
  54     if (This == NULL || ppvObj == NULL) return E_POINTER;
  55
  56     if (IsEqualGUID(riid, &IID_IUnknown) ||
  57         IsEqualGUID(riid, &IID_IPropertyBag))
  58     {
  59         *ppvObj = (LPVOID)iface;
  60         DEVENUM_IPropertyBag_AddRef(iface);
  61         return S_OK;
  62     }
  63
  64     FIXME("- no interface\n\tIID:\t%s\n", debugstr_guid(riid));
  65     return E_NOINTERFACE;
  66 }
  67
  68 /**********************************************************************
  69  * DEVENUM_IPropertyBag_AddRef (also IUnknown)
  70  */
  71 static ULONG WINAPI DEVENUM_IPropertyBag_AddRef(LPPROPERTYBAG iface)
  72 {
  73     RegPropBagImpl *This = (RegPropBagImpl *)iface;
  74     TRACE("\n");
  75
  76     return InterlockedIncrement(&This->ref);
  77 }
  78
  79 /**********************************************************************
  80  * DEVENUM_IPropertyBag_Release (also IUnknown)
  81  */
  82 static ULONG WINAPI DEVENUM_IPropertyBag_Release(LPPROPERTYBAG iface)
  83 {
  84     RegPropBagImpl *This = (RegPropBagImpl *)iface;
  85     ULONG ref;
  86
  87     TRACE("\n");
  88
  89     ref = InterlockedDecrement(&This->ref);
  90     if (ref == 0) {
  91         RegCloseKey(This->hkey);
  92         CoTaskMemFree(This);
  93         DEVENUM_UnlockModule();
  94     }
  95     return ref;
  96 }
  97
  98 static HRESULT WINAPI DEVENUM_IPropertyBag_Read(
  99     LPPROPERTYBAG iface,
 100     LPCOLESTR pszPropName,
 101     VARIANT* pVar,
 102     IErrorLog* pErrorLog)
 103 {
 104     LPVOID pData = NULL;
 105     DWORD received;
 106     DWORD type = 0;
 107     RegPropBagImpl *This = (RegPropBagImpl *)iface;
 108     HRESULT res = S_OK;
 109     LONG reswin32;
 110
 111     TRACE("(%p)->(%s, %p, %p)\n", This, debugstr_w(pszPropName), pVar, pErrorLog);
 112
 113     if (!pszPropName || !pVar)
 114         return E_POINTER;
 115
 116     reswin32 = RegQueryValueExW(This->hkey, pszPropName, NULL, NULL, NULL, &received);
 117     res = HRESULT_FROM_WIN32(reswin32);
 118
 119     if (SUCCEEDED(res))
 120     {
 121         pData = HeapAlloc(GetProcessHeap(), 0, received);
 122
 123         /* work around a GCC bug that occurs here unless we use the reswin32 variable as well */
 124         reswin32 = RegQueryValueExW(This->hkey, pszPropName, NULL, &type, (LPBYTE)pData, &received);
 125         res = HRESULT_FROM_WIN32(reswin32);
 126     }
 127
 128     if (SUCCEEDED(res))
 129     {
 130         res = E_INVALIDARG; /* assume we cannot coerce into right type */
 131
 132         TRACE("Read %d bytes (%s)\n", received, type == REG_SZ ? debugstr_w((LPWSTR)pData) : "binary data");
 133
 134         switch (type)
 135         {
 136         case REG_SZ:
 137             switch (V_VT(pVar))
 138             {
 139             case VT_LPWSTR:
 140                 V_UNION(pVar, bstrVal) = CoTaskMemAlloc(received);
 141                 memcpy(V_UNION(pVar, bstrVal), (LPWSTR)pData, received);
 142                 res = S_OK;
 143                 break;
 144             case VT_EMPTY:
 145                 V_VT(pVar) = VT_BSTR;
 146             /* fall through */
 147             case VT_BSTR:
 148                 V_UNION(pVar, bstrVal) = SysAllocStringLen((LPWSTR)pData, received/sizeof(WCHAR) - 1);
 149                 res = S_OK;
 150                 break;
 151             }
 152             break;
 153         case REG_DWORD:
 154             TRACE("REG_DWORD: %x\n", *(DWORD *)pData);
 155             switch (V_VT(pVar))
 156             {
 157             case VT_EMPTY:
 158                 V_VT(pVar) = VT_I4;
 159                 /* fall through */
 160             case VT_I4:
 161             case VT_UI4:
 162                 V_UNION(pVar, ulVal) = *(DWORD *)pData;
 163                 res = S_OK;
 164                 break;
 165             }
 166             break;
 167         case REG_BINARY:
 168             {
 169                 SAFEARRAYBOUND bound;
 170                 void * pArrayElements;
 171                 bound.lLbound = 0;
 172                 bound.cElements = received;
 173                 TRACE("REG_BINARY: len = %d\n", received);
 174                 switch (V_VT(pVar))
 175                 {
 176                 case VT_EMPTY:
 177                 case VT_ARRAY | VT_UI1:
 178                     if (!(V_UNION(pVar, parray) = SafeArrayCreate(VT_UI1, 1, &bound)))
 179                         res = E_OUTOFMEMORY;
 180                     res = S_OK;
 181                     break;
 182                 }
 183
 184                 if (res == E_INVALIDARG)
 185                     break;
 186
 187                 res = SafeArrayAccessData(V_UNION(pVar, parray), &pArrayElements);
 188                 if (FAILED(res))
 189                     break;
 190
 191                 CopyMemory(pArrayElements, pData, received);
 192                 res = SafeArrayUnaccessData(V_UNION(pVar, parray));
 193                 break;
 194             }
 195         }
 196         if (res == E_INVALIDARG)
 197             FIXME("Variant type %x not supported for regtype %x\n", V_VT(pVar), type);
 198     }
 199
 200     HeapFree(GetProcessHeap(), 0, pData);
 201
 202     TRACE("<- %x\n", res);
 203     return res;
 204 }
 205
 206 static HRESULT WINAPI DEVENUM_IPropertyBag_Write(
 207     LPPROPERTYBAG iface,
 208     LPCOLESTR pszPropName,
 209     VARIANT* pVar)
 210 {
 211     RegPropBagImpl *This = (RegPropBagImpl *)iface;
 212     LPVOID lpData = NULL;
 213     DWORD cbData = 0;
 214     DWORD dwType = 0;
 215     HRESULT res = S_OK;
 216
 217     TRACE("(%p)->(%s, %p)\n", This, debugstr_w(pszPropName), pVar);
 218
 219     switch (V_VT(pVar))
 220     {
 221     case VT_BSTR:
 222         TRACE("writing %s\n", debugstr_w(V_UNION(pVar, bstrVal)));
 223         lpData = (LPVOID)V_UNION(pVar, bstrVal);
 224         dwType = REG_SZ;
 225         cbData = (lstrlenW(V_UNION(pVar, bstrVal)) + 1) * sizeof(WCHAR);
 226         break;
 227     case VT_I4:
 228     case VT_UI4:
 229         TRACE("writing %u\n", V_UNION(pVar, ulVal));
 230         lpData = (LPVOID)&V_UNION(pVar, ulVal);
 231         dwType = REG_DWORD;
 232         cbData = sizeof(DWORD);
 233         break;
 234     case VT_ARRAY | VT_UI1:
 235     {
 236         LONG lUbound = 0;
 237         LONG lLbound = 0;
 238         dwType = REG_BINARY;
 239         res = SafeArrayGetLBound(V_UNION(pVar, parray), 1, &lLbound);
 240         res = SafeArrayGetUBound(V_UNION(pVar, parray), 1, &lUbound);
 241         cbData = (lUbound - lLbound + 1) /* * sizeof(BYTE)*/;
 242         TRACE("cbData: %d\n", cbData);
 243         res = SafeArrayAccessData(V_UNION(pVar, parray), &lpData);
 244         break;
 245     }
 246     default:
 247         FIXME("Variant type %d not handled\n", V_VT(pVar));
 248         return E_FAIL;
 249     }
 250
 251     if (RegSetValueExW(This->hkey,
 252                        pszPropName, 0,
 253                        dwType, lpData, cbData) != ERROR_SUCCESS)
 254         res = E_FAIL;
 255
 256     if (V_VT(pVar) & VT_ARRAY)
 257         res = SafeArrayUnaccessData(V_UNION(pVar, parray));
 258
 259     return res;
 260 }
 261
 262 static const IPropertyBagVtbl IPropertyBag_Vtbl =
 263 {
 264     DEVENUM_IPropertyBag_QueryInterface,
 265     DEVENUM_IPropertyBag_AddRef,
 266     DEVENUM_IPropertyBag_Release,
 267     DEVENUM_IPropertyBag_Read,
 268     DEVENUM_IPropertyBag_Write
 269 };
 270
 271 static HRESULT DEVENUM_IPropertyBag_Construct(HANDLE hkey, IPropertyBag **ppBag)
 272 {
 273     RegPropBagImpl * rpb = CoTaskMemAlloc(sizeof(RegPropBagImpl));
 274     if (!rpb)
 275         return E_OUTOFMEMORY;
 276     rpb->lpVtbl = &IPropertyBag_Vtbl;
 277     rpb->ref = 1;
 278     rpb->hkey = hkey;
 279     *ppBag = (IPropertyBag*)rpb;
 280     DEVENUM_LockModule();
 281     return S_OK;
 282 }
 283
 284
 285 static HRESULT WINAPI DEVENUM_IMediaCatMoniker_QueryInterface(
 286     LPMONIKER iface,
 287     REFIID riid,
 288     LPVOID *ppvObj)
 289 {
 290     MediaCatMoniker *This = (MediaCatMoniker *)iface;
 291     TRACE("\n\tIID:\t%s\n",debugstr_guid(riid));
 292
 293     if (This == NULL || ppvObj == NULL) return E_POINTER;
 294
 295     *ppvObj = NULL;
 296
 297     if (IsEqualGUID(riid, &IID_IUnknown) ||
 298         IsEqualGUID(riid, &IID_IPersist) ||
 299         IsEqualGUID(riid, &IID_IPersistStream) ||
 300         IsEqualGUID(riid, &IID_IMoniker))
 301     {
 302         *ppvObj = (LPVOID)iface;
 303         DEVENUM_IMediaCatMoniker_AddRef(iface);
 304         return S_OK;
 305     }
 306
 307     FIXME("- no interface\n\tIID:\t%s\n", debugstr_guid(riid));
 308     return E_NOINTERFACE;
 309 }
 310
 311 /**********************************************************************
 312  * DEVENUM_IMediaCatMoniker_AddRef (also IUnknown)
 313  */
 314 static ULONG WINAPI DEVENUM_IMediaCatMoniker_AddRef(LPMONIKER iface)
 315 {
 316     MediaCatMoniker *This = (MediaCatMoniker *)iface;
 317     TRACE("\n");
 318
 319     return InterlockedIncrement(&This->ref);
 320 }
 321
 322 /**********************************************************************
 323  * DEVENUM_IMediaCatMoniker_Release (also IUnknown)
 324  */
 325 static ULONG WINAPI DEVENUM_IMediaCatMoniker_Release(LPMONIKER iface)
 326 {
 327     MediaCatMoniker *This = (MediaCatMoniker *)iface;
 328     ULONG ref;
 329     TRACE("\n");
 330
 331     ref = InterlockedDecrement(&This->ref);
 332     if (ref == 0) {
 333         RegCloseKey(This->hkey);
 334         CoTaskMemFree(This);
 335         DEVENUM_UnlockModule();
 336     }
 337     return ref;
 338 }
 339
 340 static HRESULT WINAPI DEVENUM_IMediaCatMoniker_GetClassID(
 341     LPMONIKER iface,
 342     CLSID* pClassID)
 343 {
 344     MediaCatMoniker *This = (MediaCatMoniker *)iface;
 345     FIXME("(%p)->(%p)\n", This, pClassID);
 346
 347     if (pClassID == NULL)
 348         return E_POINTER;
 349
 350     return E_NOTIMPL;
 351 }
 352
 353 static HRESULT WINAPI DEVENUM_IMediaCatMoniker_IsDirty(LPMONIKER iface)
 354 {
 355     FIXME("()\n");
 356
 357     return S_FALSE;
 358 }
 359
 360 static HRESULT WINAPI DEVENUM_IMediaCatMoniker_Load(LPMONIKER iface, IStream* pStm)
 361 {
 362     FIXME("(%p)\n", pStm);
 363
 364     return E_NOTIMPL;
 365 }
 366
 367 static HRESULT WINAPI DEVENUM_IMediaCatMoniker_Save(LPMONIKER iface, IStream* pStm, BOOL fClearDirty)
 368 {
 369     FIXME("(%p, %s)\n", pStm, fClearDirty ? "true" : "false");
 370
 371     return STG_E_CANTSAVE;
 372 }
 373
 374 static HRESULT WINAPI DEVENUM_IMediaCatMoniker_GetSizeMax(
 375     LPMONIKER iface,
 376     ULARGE_INTEGER* pcbSize)
 377 {
 378     FIXME("(%p)\n", pcbSize);
 379
 380     ZeroMemory(pcbSize, sizeof(*pcbSize));
 381
 382     return S_OK;
 383 }
 384
 385 static HRESULT WINAPI DEVENUM_IMediaCatMoniker_BindToObject(
 386     LPMONIKER iface,
 387     IBindCtx* pbc,
 388     IMoniker* pmkToLeft,
 389     REFIID riidResult,
 390     void** ppvResult)
 391 {
 392     IUnknown * pObj = NULL;
 393     IPropertyBag * pProp = NULL;
 394     CLSID clsID;
 395     VARIANT var;
 396     HRESULT res = E_FAIL;
 397
 398     MediaCatMoniker *This = (MediaCatMoniker *)iface;
 399
 400     VariantClear(&var);
 401
 402     TRACE("(%p)->(%p, %p, %s, %p)\n", This, pbc, pmkToLeft, debugstr_guid(riidResult), ppvResult);
 403
 404     *ppvResult = NULL;
 405
 406     if(pmkToLeft==NULL)
 407     {
 408             /* first activation of this class */
 409             LPVOID pvptr;
 410             res=IMoniker_BindToStorage(iface, NULL, NULL, &IID_IPropertyBag, &pvptr);
 411             pProp = (IPropertyBag*)pvptr;
 412             if (SUCCEEDED(res))
 413             {
 414                 V_VT(&var) = VT_LPWSTR;
 415                 res = IPropertyBag_Read(pProp, clsid_keyname, &var, NULL);
 416             }
 417             if (SUCCEEDED(res))
 418             {
 419                 res = CLSIDFromString(V_UNION(&var,bstrVal), &clsID);
 420                 CoTaskMemFree(V_UNION(&var, bstrVal));
 421             }
 422             if (SUCCEEDED(res))
 423             {
 424                 res=CoCreateInstance(&clsID,NULL,CLSCTX_ALL,&IID_IUnknown,&pvptr);
 425                 pObj = (IUnknown*)pvptr;
 426             }
 427     }
 428
 429     if (pObj!=NULL)
 430     {
 431         /* get the requested interface from the loaded class */
 432         res = S_OK;
 433         if (pProp) {
 434            HRESULT res2;
 435            LPVOID ppv = NULL;
 436            res2 = IUnknown_QueryInterface(pObj, &IID_IPersistPropertyBag, &ppv);
 437            if (SUCCEEDED(res2)) {
 438               res = IPersistPropertyBag_Load((IPersistPropertyBag *) ppv, pProp, NULL);
 439               IPersistPropertyBag_Release((IPersistPropertyBag *) ppv);
 440            }
 441         }
 442         if (SUCCEEDED(res))
 443            res= IUnknown_QueryInterface(pObj,riidResult,ppvResult);
 444         IUnknown_Release(pObj);
 445     }
 446
 447     if (pProp)
 448     {
 449         IPropertyBag_Release(pProp);
 450     }
 451
 452     TRACE("<- 0x%x\n", res);
 453
 454     return res;
 455 }
 456
 457 static HRESULT WINAPI DEVENUM_IMediaCatMoniker_BindToStorage(
 458     LPMONIKER iface,
 459     IBindCtx* pbc,
 460     IMoniker* pmkToLeft,
 461     REFIID riid,
 462     void** ppvObj)
 463 {
 464     MediaCatMoniker *This = (MediaCatMoniker *)iface;
 465     TRACE("(%p)->(%p, %p, %s, %p)\n", This, pbc, pmkToLeft, debugstr_guid(riid), ppvObj);
 466
 467     *ppvObj = NULL;
 468
 469     if (pbc || pmkToLeft)
 470         return MK_E_NOSTORAGE;
 471
 472     if (IsEqualGUID(riid, &IID_IPropertyBag))
 473     {
 474         HANDLE hkey;
 475         DuplicateHandle(GetCurrentProcess(), This->hkey, GetCurrentProcess(), &hkey, 0, 0, DUPLICATE_SAME_ACCESS);
 476         return DEVENUM_IPropertyBag_Construct(hkey, (IPropertyBag**)ppvObj);
 477     }
 478
 479     return MK_E_NOSTORAGE;
 480 }
 481
 482 static HRESULT WINAPI DEVENUM_IMediaCatMoniker_Reduce(
 483     LPMONIKER iface,
 484     IBindCtx* pbc,
 485     DWORD dwReduceHowFar,
 486     IMoniker** ppmkToLeft,
 487     IMoniker** ppmkReduced)
 488 {
 489     TRACE("(%p, %d, %p, %p)\n", pbc, dwReduceHowFar, ppmkToLeft, ppmkReduced);
 490
 491     if (ppmkToLeft)
 492         *ppmkToLeft = NULL;
 493     *ppmkReduced = iface;
 494
 495     return MK_S_REDUCED_TO_SELF;
 496 }
 497
 498 static HRESULT WINAPI DEVENUM_IMediaCatMoniker_ComposeWith(
 499     LPMONIKER iface,
 500     IMoniker* pmkRight,
 501     BOOL fOnlyIfNotGeneric,
 502     IMoniker** ppmkComposite)
 503 {
 504     FIXME("(%p, %s, %p): stub\n", pmkRight, fOnlyIfNotGeneric ? "true" : "false", ppmkComposite);
 505
 506     /* FIXME: use CreateGenericComposite? */
 507     *ppmkComposite = NULL;
 508
 509     return E_NOTIMPL;
 510 }
 511
 512 static HRESULT WINAPI DEVENUM_IMediaCatMoniker_Enum(
 513     LPMONIKER iface,
 514     BOOL fForward,
 515     IEnumMoniker** ppenumMoniker)
 516 {
 517     FIXME("(%s, %p): stub\n", fForward ? "true" : "false", ppenumMoniker);
 518
 519     *ppenumMoniker = NULL;
 520
 521     return S_OK;
 522 }
 523
 524 static HRESULT WINAPI DEVENUM_IMediaCatMoniker_IsEqual(
 525     LPMONIKER iface,
 526     IMoniker* pmkOtherMoniker)
 527 {
 528     FIXME("(%p)\n", pmkOtherMoniker);
 529
 530     return E_NOTIMPL;
 531 }
 532
 533 static HRESULT WINAPI DEVENUM_IMediaCatMoniker_Hash(
 534     LPMONIKER iface,
 535     DWORD* pdwHash)
 536 {
 537     TRACE("(%p)\n", pdwHash);
 538
 539     *pdwHash = 0;
 540
 541     return S_OK;
 542 }
 543
 544 static HRESULT WINAPI DEVENUM_IMediaCatMoniker_IsRunning(
 545     LPMONIKER iface,
 546     IBindCtx* pbc,
 547     IMoniker* pmkToLeft,
 548     IMoniker* pmkNewlyRunning)
 549 {
 550     FIXME("(%p, %p, %p)\n", pbc, pmkToLeft, pmkNewlyRunning);
 551
 552     return S_FALSE;
 553 }
 554
 555 static HRESULT WINAPI DEVENUM_IMediaCatMoniker_GetTimeOfLastChange(
 556     LPMONIKER iface,
 557     IBindCtx* pbc,
 558     IMoniker* pmkToLeft,
 559     FILETIME* pFileTime)
 560 {
 561     TRACE("(%p, %p, %p)\n", pbc, pmkToLeft, pFileTime);
 562
 563     pFileTime->dwLowDateTime = 0xFFFFFFFF;
 564     pFileTime->dwHighDateTime = 0x7FFFFFFF;
 565
 566     return MK_E_UNAVAILABLE;
 567 }
 568
 569 static HRESULT WINAPI DEVENUM_IMediaCatMoniker_Inverse(
 570     LPMONIKER iface,
 571     IMoniker** ppmk)
 572 {
 573     TRACE("(%p)\n", ppmk);
 574
 575     *ppmk = NULL;
 576
 577     return MK_E_NOINVERSE;
 578 }
 579
 580 static HRESULT WINAPI DEVENUM_IMediaCatMoniker_CommonPrefixWith(
 581     LPMONIKER iface,
 582     IMoniker* pmkOtherMoniker,
 583     IMoniker** ppmkPrefix)
 584 {
 585     TRACE("(%p, %p)\n", pmkOtherMoniker, ppmkPrefix);
 586
 587     *ppmkPrefix = NULL;
 588
 589     return MK_E_NOPREFIX;
 590 }
 591
 592 static HRESULT WINAPI DEVENUM_IMediaCatMoniker_RelativePathTo(
 593     LPMONIKER iface,
 594     IMoniker* pmkOther,
 595     IMoniker** ppmkRelPath)
 596 {
 597     TRACE("(%p, %p)\n", pmkOther, ppmkRelPath);
 598
 599     *ppmkRelPath = pmkOther;
 600
 601     return MK_S_HIM;
 602 }
 603
 604 static HRESULT WINAPI DEVENUM_IMediaCatMoniker_GetDisplayName(
 605     LPMONIKER iface,
 606     IBindCtx* pbc,
 607     IMoniker* pmkToLeft,
 608     LPOLESTR* ppszDisplayName)
 609 {
 610     MediaCatMoniker *This = (MediaCatMoniker *)iface;
 611     WCHAR wszBuffer[MAX_PATH];
 612     static const WCHAR wszFriendlyName[] = {'F','r','i','e','n','d','l','y','N','a','m','e',0};
 613     LONG received = sizeof(wszFriendlyName);
 614
 615     TRACE("(%p, %p, %p)\n", pbc, pmkToLeft, ppszDisplayName);
 616
 617     *ppszDisplayName = NULL;
 618
 619     /* FIXME: should this be the weird stuff we have to parse in IParseDisplayName? */
 620     if (RegQueryValueW(This->hkey, wszFriendlyName, wszBuffer, &received) == ERROR_SUCCESS)
 621     {
 622         *ppszDisplayName = CoTaskMemAlloc(received);
 623         strcpyW(*ppszDisplayName, wszBuffer);
 624         return S_OK;
 625     }
 626
 627     return E_FAIL;
 628 }
 629
 630 static HRESULT WINAPI DEVENUM_IMediaCatMoniker_ParseDisplayName(
 631     LPMONIKER iface,
 632     IBindCtx* pbc,
 633     IMoniker* pmkToLeft,
 634     LPOLESTR pszDisplayName,
 635     ULONG* pchEaten,
 636     IMoniker** ppmkOut)
 637 {
 638     FIXME("(%p, %p, %s, %p, %p)\n", pbc, pmkToLeft, debugstr_w(pszDisplayName), pchEaten, ppmkOut);
 639
 640     *pchEaten = 0;
 641     *ppmkOut = NULL;
 642
 643     return MK_E_SYNTAX;
 644 }
 645
 646 static HRESULT WINAPI DEVENUM_IMediaCatMoniker_IsSystemMoniker(
 647     LPMONIKER iface,
 648     DWORD* pdwMksys)
 649 {
 650     TRACE("(%p)\n", pdwMksys);
 651
 652     return S_FALSE;
 653 }
 654
 655 static const IMonikerVtbl IMoniker_Vtbl =
 656 {
 657     DEVENUM_IMediaCatMoniker_QueryInterface,
 658     DEVENUM_IMediaCatMoniker_AddRef,
 659     DEVENUM_IMediaCatMoniker_Release,
 660     DEVENUM_IMediaCatMoniker_GetClassID,
 661     DEVENUM_IMediaCatMoniker_IsDirty,
 662     DEVENUM_IMediaCatMoniker_Load,
 663     DEVENUM_IMediaCatMoniker_Save,
 664     DEVENUM_IMediaCatMoniker_GetSizeMax,
 665     DEVENUM_IMediaCatMoniker_BindToObject,
 666     DEVENUM_IMediaCatMoniker_BindToStorage,
 667     DEVENUM_IMediaCatMoniker_Reduce,
 668     DEVENUM_IMediaCatMoniker_ComposeWith,
 669     DEVENUM_IMediaCatMoniker_Enum,
 670     DEVENUM_IMediaCatMoniker_IsEqual,
 671     DEVENUM_IMediaCatMoniker_Hash,
 672     DEVENUM_IMediaCatMoniker_IsRunning,
 673     DEVENUM_IMediaCatMoniker_GetTimeOfLastChange,
 674     DEVENUM_IMediaCatMoniker_Inverse,
 675     DEVENUM_IMediaCatMoniker_CommonPrefixWith,
 676     DEVENUM_IMediaCatMoniker_RelativePathTo,
 677     DEVENUM_IMediaCatMoniker_GetDisplayName,
 678     DEVENUM_IMediaCatMoniker_ParseDisplayName,
 679     DEVENUM_IMediaCatMoniker_IsSystemMoniker
 680 };
 681
 682 MediaCatMoniker * DEVENUM_IMediaCatMoniker_Construct(void)
 683 {
 684     MediaCatMoniker * pMoniker = NULL;
 685     pMoniker = CoTaskMemAlloc(sizeof(MediaCatMoniker));
 686     if (!pMoniker)
 687         return NULL;
 688
 689     pMoniker->lpVtbl = &IMoniker_Vtbl;
 690     pMoniker->ref = 0;
 691     pMoniker->hkey = NULL;
 692
 693     DEVENUM_IMediaCatMoniker_AddRef((LPMONIKER)pMoniker);
 694
 695     DEVENUM_LockModule();
 696
 697     return pMoniker;
 698 }
 699
 700 /**********************************************************************
 701  * DEVENUM_IEnumMoniker_QueryInterface (also IUnknown)
 702  */
 703 static HRESULT WINAPI DEVENUM_IEnumMoniker_QueryInterface(
 704     LPENUMMONIKER iface,
 705     REFIID riid,
 706     LPVOID *ppvObj)
 707 {
 708     EnumMonikerImpl *This = (EnumMonikerImpl *)iface;
 709     TRACE("\n\tIID:\t%s\n",debugstr_guid(riid));
 710
 711     if (This == NULL || ppvObj == NULL) return E_POINTER;
 712
 713     if (IsEqualGUID(riid, &IID_IUnknown) ||
 714         IsEqualGUID(riid, &IID_IEnumMoniker))
 715     {
 716         *ppvObj = (LPVOID)iface;
 717         DEVENUM_IEnumMoniker_AddRef(iface);
 718         return S_OK;
 719     }
 720
 721     FIXME("- no interface\n\tIID:\t%s\n", debugstr_guid(riid));
 722     return E_NOINTERFACE;
 723 }
 724
 725 /**********************************************************************
 726  * DEVENUM_IEnumMoniker_AddRef (also IUnknown)
 727  */
 728 static ULONG WINAPI DEVENUM_IEnumMoniker_AddRef(LPENUMMONIKER iface)
 729 {
 730     EnumMonikerImpl *This = (EnumMonikerImpl *)iface;
 731     ULONG ref = InterlockedIncrement(&This->ref);
 732
 733     TRACE("(%p)->() AddRef from %d\n", iface, ref - 1);
 734
 735     return ref;
 736 }
 737
 738 /**********************************************************************
 739  * DEVENUM_IEnumMoniker_Release (also IUnknown)
 740  */
 741 static ULONG WINAPI DEVENUM_IEnumMoniker_Release(LPENUMMONIKER iface)
 742 {
 743     EnumMonikerImpl *This = (EnumMonikerImpl *)iface;
 744     ULONG ref = InterlockedDecrement(&This->ref);
 745
 746     TRACE("(%p)->() Release from %d\n", iface, ref + 1);
 747
 748     if (!ref)
 749     {
 750         RegCloseKey(This->hkey);
 751         CoTaskMemFree(This);
 752         DEVENUM_UnlockModule();
 753         return 0;
 754     }
 755     return ref;
 756 }
 757
 758 static HRESULT WINAPI DEVENUM_IEnumMoniker_Next(LPENUMMONIKER iface, ULONG celt, IMoniker ** rgelt, ULONG * pceltFetched)
 759 {
 760     WCHAR buffer[MAX_PATH + 1];
 761     LONG res;
 762     ULONG fetched = 0;
 763     MediaCatMoniker * pMoniker;
 764     EnumMonikerImpl *This = (EnumMonikerImpl *)iface;
 765
 766     TRACE("(%p)->(%d, %p, %p)\n", iface, celt, rgelt, pceltFetched);
 767
 768     while (fetched < celt)
 769     {
 770         res = RegEnumKeyW(This->hkey, This->index, buffer, sizeof(buffer) / sizeof(WCHAR));
 771         if (res != ERROR_SUCCESS)
 772         {
 773             break;
 774         }
 775         pMoniker = DEVENUM_IMediaCatMoniker_Construct();
 776         if (!pMoniker)
 777             return E_OUTOFMEMORY;
 778
 779         if (RegOpenKeyW(This->hkey, buffer, &pMoniker->hkey) != ERROR_SUCCESS)
 780         {
 781             DEVENUM_IMediaCatMoniker_Release((LPMONIKER)pMoniker);
 782             break;
 783         }
 784         rgelt[fetched] = (LPMONIKER)pMoniker;
 785         fetched++;
 786     }
 787
 788     This->index += fetched;
 789
 790     TRACE("-- fetched %d\n", fetched);
 791
 792     if (pceltFetched)
 793         *pceltFetched = fetched;
 794
 795     if (fetched != celt)
 796         return S_FALSE;
 797     else
 798         return S_OK;
 799 }
 800
 801 static HRESULT WINAPI DEVENUM_IEnumMoniker_Skip(LPENUMMONIKER iface, ULONG celt)
 802 {
 803     EnumMonikerImpl *This = (EnumMonikerImpl *)iface;
 804
 805     TRACE("(%p)->(%d)\n", iface, celt);
 806
 807     This->index += celt;
 808
 809     return S_OK;
 810 }
 811
 812 static HRESULT WINAPI DEVENUM_IEnumMoniker_Reset(LPENUMMONIKER iface)
 813 {
 814     EnumMonikerImpl *This = (EnumMonikerImpl *)iface;
 815
 816     TRACE("(%p)->()\n", iface);
 817
 818     This->index = 0;
 819
 820     return S_OK;
 821 }
 822
 823 static HRESULT WINAPI DEVENUM_IEnumMoniker_Clone(LPENUMMONIKER iface, IEnumMoniker ** ppenum)
 824 {
 825     FIXME("(%p)->(%p): stub\n", iface, ppenum);
 826
 827     return E_NOTIMPL;
 828 }
 829
 830 /**********************************************************************
 831  * IEnumMoniker_Vtbl
 832  */
 833 static const IEnumMonikerVtbl IEnumMoniker_Vtbl =
 834 {
 835     DEVENUM_IEnumMoniker_QueryInterface,
 836     DEVENUM_IEnumMoniker_AddRef,
 837     DEVENUM_IEnumMoniker_Release,
 838     DEVENUM_IEnumMoniker_Next,
 839     DEVENUM_IEnumMoniker_Skip,
 840     DEVENUM_IEnumMoniker_Reset,
 841     DEVENUM_IEnumMoniker_Clone
 842 };
 843
 844 HRESULT DEVENUM_IEnumMoniker_Construct(HKEY hkey, IEnumMoniker ** ppEnumMoniker)
 845 {
 846     EnumMonikerImpl * pEnumMoniker = CoTaskMemAlloc(sizeof(EnumMonikerImpl));
 847     if (!pEnumMoniker)
 848         return E_OUTOFMEMORY;
 849
 850     pEnumMoniker->lpVtbl = &IEnumMoniker_Vtbl;
 851     pEnumMoniker->ref = 1;
 852     pEnumMoniker->index = 0;
 853     pEnumMoniker->hkey = hkey;
 854
 855     *ppEnumMoniker = (IEnumMoniker *)pEnumMoniker;
 856
 857     DEVENUM_LockModule();
 858
 859     return S_OK;
 860 }