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