git.oblomov.eu Git - wine/blob - dlls/oleaut32/recinfo.c

   1 /*
   2  * Copyright 2005 Jacek Caban
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include <stdarg.h>
  20
  21 #define COBJMACROS
  22 #define NONAMELESSUNION
  23 #define NONAMELESSSTRUCT
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "objbase.h"
  28 #include "oaidl.h"
  29 #include "oleauto.h"
  30
  31 #include "wine/unicode.h"
  32 #include "wine/debug.h"
  33
  34 WINE_DEFAULT_DEBUG_CHANNEL(ole);
  35
  36 typedef struct {
  37     enum VARENUM vt;
  38     VARKIND varkind;
  39     ULONG offset;
  40     BSTR name;
  41 } fieldstr;
  42
  43 typedef struct {
  44     const IRecordInfoVtbl *lpVtbl;
  45     LONG ref;
  46
  47     GUID guid;
  48     UINT lib_index;
  49     WORD n_vars;
  50     ULONG size;
  51     BSTR name;
  52     fieldstr *fields;
  53     ITypeInfo *pTypeInfo;
  54 } IRecordInfoImpl;
  55
  56 static HRESULT copy_to_variant(void *src, VARIANT *pvar, enum VARENUM vt)
  57 {
  58     TRACE("%p %p %d\n", src, pvar, vt);
  59
  60 #define CASE_COPY(x) \
  61     case VT_ ## x: \
  62         V_ ## x(pvar) = *(typeof(V_ ## x(pvar))*)src; \
  63         break
  64
  65     switch(vt) {
  66         CASE_COPY(I2);
  67         CASE_COPY(I4);
  68         CASE_COPY(R4);
  69         CASE_COPY(R8);
  70         CASE_COPY(CY);
  71         CASE_COPY(DATE);
  72         CASE_COPY(BSTR);
  73         CASE_COPY(ERROR);
  74         CASE_COPY(BOOL);
  75         CASE_COPY(DECIMAL);
  76         CASE_COPY(I1);
  77         CASE_COPY(UI1);
  78         CASE_COPY(UI2);
  79         CASE_COPY(UI4);
  80         CASE_COPY(I8);
  81         CASE_COPY(UI8);
  82         CASE_COPY(INT);
  83         CASE_COPY(UINT);
  84         CASE_COPY(INT_PTR);
  85         CASE_COPY(UINT_PTR);
  86     default:
  87         FIXME("Not supported type: %d\n", vt);
  88         return E_NOTIMPL;
  89     };
  90 #undef CASE_COPY
  91
  92     V_VT(pvar) = vt;
  93     return S_OK;
  94 }
  95
  96 static HRESULT copy_from_variant(VARIANT *src, void *dest, enum VARENUM vt)
  97 {
  98     VARIANT var;
  99     HRESULT hres;
 100
 101     TRACE("(%p(%d) %p %d)\n", src, V_VT(src), dest, vt);
 102
 103     hres = VariantChangeType(&var, src, 0, vt);
 104     if(FAILED(hres))
 105         return hres;
 106
 107 #define CASE_COPY(x) \
 108     case VT_ ## x: \
 109         *(typeof(V_ ## x(&var))*)dest = V_ ## x(&var); \
 110         break
 111
 112     switch(vt) {
 113         CASE_COPY(I2);
 114         CASE_COPY(I4);
 115         CASE_COPY(R4);
 116         CASE_COPY(R8);
 117         CASE_COPY(CY);
 118         CASE_COPY(DATE);
 119         CASE_COPY(BSTR);
 120         CASE_COPY(ERROR);
 121         CASE_COPY(BOOL);
 122         CASE_COPY(DECIMAL);
 123         CASE_COPY(I1);
 124         CASE_COPY(UI1);
 125         CASE_COPY(UI2);
 126         CASE_COPY(UI4);
 127         CASE_COPY(I8);
 128         CASE_COPY(UI8);
 129         CASE_COPY(INT);
 130         CASE_COPY(UINT);
 131         CASE_COPY(INT_PTR);
 132         CASE_COPY(UINT_PTR);
 133     default:
 134         FIXME("Not supported type: %d\n", V_VT(&var));
 135         return E_NOTIMPL;
 136     };
 137 #undef CASE_COPY
 138     return S_OK;
 139 }
 140
 141 static HRESULT WINAPI IRecordInfoImpl_QueryInterface(IRecordInfo *iface, REFIID riid,
 142                                                 void **ppvObject)
 143 {
 144     TRACE("(%p)->(%s %p)\n", iface, debugstr_guid(riid), ppvObject);
 145
 146     if(IsEqualGUID(&IID_IUnknown, riid) || IsEqualGUID(&IID_IRecordInfo, riid)) {
 147        *ppvObject = iface;
 148        IRecordInfo_AddRef(iface);
 149        return S_OK;
 150     }
 151
 152     FIXME("Not supported interface: %s\n", debugstr_guid(riid));
 153     return E_NOINTERFACE;
 154 }
 155
 156 static ULONG WINAPI IRecordInfoImpl_AddRef(IRecordInfo *iface)
 157 {
 158     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 159     ULONG ref = InterlockedIncrement(&This->ref);
 160     TRACE("(%p) -> %d\n", This, ref);
 161     return ref;
 162 }
 163
 164 static ULONG WINAPI IRecordInfoImpl_Release(IRecordInfo *iface)
 165 {
 166     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 167     ULONG ref = InterlockedDecrement(&This->ref);
 168
 169     TRACE("(%p) -> %d\n", This, ref);
 170
 171     if(!ref) {
 172         int i;
 173         for(i=0; i<This->n_vars; i++)
 174             SysFreeString(This->fields[i].name);
 175         HeapFree(GetProcessHeap(), 0, This->name);
 176         HeapFree(GetProcessHeap(), 0, This->fields);
 177         ITypeInfo_Release(This->pTypeInfo);
 178         HeapFree(GetProcessHeap(), 0, This);
 179     }
 180     return ref;
 181 }
 182
 183 static HRESULT WINAPI IRecordInfoImpl_RecordInit(IRecordInfo *iface, PVOID pvNew)
 184 {
 185     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 186     TRACE("(%p)->(%p)\n", This, pvNew);
 187
 188     if(!pvNew)
 189         return E_INVALIDARG;
 190
 191     memset(pvNew, 0, This->size);
 192     return S_OK;
 193 }
 194
 195 static HRESULT WINAPI IRecordInfoImpl_RecordClear(IRecordInfo *iface, PVOID pvExisting)
 196 {
 197     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 198     int i;
 199     PVOID var;
 200
 201     TRACE("(%p)->(%p)\n", This, pvExisting);
 202
 203     if(!pvExisting)
 204         return E_INVALIDARG;
 205
 206     for(i=0; i<This->n_vars; i++) {
 207         if(This->fields[i].varkind != VAR_PERINSTANCE) {
 208             ERR("varkind != VAR_PERINSTANCE\n");
 209             continue;
 210         }
 211         var = ((PBYTE)pvExisting)+This->fields[i].offset;
 212         switch(This->fields[i].vt) {
 213             case VT_BSTR:
 214                SysFreeString(*(BSTR*)var);
 215                 *(BSTR*)var = NULL;
 216                 break;
 217             case VT_I2:
 218             case VT_I4:
 219             case VT_R4:
 220             case VT_R8:
 221             case VT_CY:
 222             case VT_DATE:
 223             case VT_ERROR:
 224             case VT_BOOL:
 225             case VT_DECIMAL:
 226             case VT_I1:
 227             case VT_UI1:
 228             case VT_UI2:
 229             case VT_UI4:
 230             case VT_I8:
 231             case VT_UI8:
 232             case VT_INT:
 233             case VT_UINT:
 234                 break;
 235             case VT_INT_PTR:
 236             case VT_UINT_PTR:
 237                 *(void**)var = NULL;
 238                 break;
 239             default:
 240                 FIXME("Not supported vt = %d\n", This->fields[i].vt);
 241                 break;
 242         }
 243     }
 244
 245     return S_OK;
 246 }
 247
 248 static HRESULT WINAPI IRecordInfoImpl_RecordCopy(IRecordInfo *iface, PVOID pvExisting,
 249                                                 PVOID pvNew)
 250 {
 251     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 252
 253     TRACE("(%p)->(%p %p)\n", This, pvExisting, pvNew);
 254
 255     if(!pvExisting || !pvNew)
 256         return E_INVALIDARG;
 257
 258     memcpy(pvExisting, pvNew, This->size);
 259     return S_OK;
 260 }
 261
 262 static HRESULT WINAPI IRecordInfoImpl_GetGuid(IRecordInfo *iface, GUID *pguid)
 263 {
 264     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 265
 266     TRACE("(%p)->(%p)\n", This, pguid);
 267
 268     if(!pguid)
 269         return E_INVALIDARG;
 270
 271     *pguid = This->guid;
 272     return S_OK;
 273 }
 274
 275 static HRESULT WINAPI IRecordInfoImpl_GetName(IRecordInfo *iface, BSTR *pbstrName)
 276 {
 277     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 278
 279     TRACE("(%p)->(%p)\n", This, pbstrName);
 280
 281     if(!pbstrName)
 282         return E_INVALIDARG;
 283
 284     *pbstrName = SysAllocString(This->name);
 285     return S_OK;
 286 }
 287
 288 static HRESULT WINAPI IRecordInfoImpl_GetSize(IRecordInfo *iface, ULONG *pcbSize)
 289 {
 290     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 291
 292     TRACE("(%p)->(%p)\n", This, pcbSize);
 293
 294     if(!pcbSize)
 295         return E_INVALIDARG;
 296
 297     *pcbSize = This->size;
 298     return S_OK;
 299 }
 300
 301 static HRESULT WINAPI IRecordInfoImpl_GetTypeInfo(IRecordInfo *iface, ITypeInfo **ppTypeInfo)
 302 {
 303     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 304
 305     TRACE("(%p)->(%p)\n", This, ppTypeInfo);
 306
 307     if(!ppTypeInfo)
 308         return E_INVALIDARG;
 309
 310     ITypeInfo_AddRef(This->pTypeInfo);
 311     *ppTypeInfo = This->pTypeInfo;
 312
 313     return S_OK;
 314 }
 315
 316 static HRESULT WINAPI IRecordInfoImpl_GetField(IRecordInfo *iface, PVOID pvData,
 317                                                 LPCOLESTR szFieldName, VARIANT *pvarField)
 318 {
 319     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 320     int i;
 321
 322     TRACE("(%p)->(%p %s %p)\n", This, pvData, debugstr_w(szFieldName), pvarField);
 323
 324     if(!pvData || !szFieldName || !pvarField)
 325         return E_INVALIDARG;
 326
 327     for(i=0; i<This->n_vars; i++)
 328         if(!strcmpW(This->fields[i].name, szFieldName))
 329             break;
 330     if(i == This->n_vars)
 331         return TYPE_E_FIELDNOTFOUND;
 332
 333     VariantClear(pvarField);
 334     return copy_to_variant(((PBYTE)pvData)+This->fields[i].offset, pvarField,
 335             This->fields[i].vt);
 336 }
 337
 338 static HRESULT WINAPI IRecordInfoImpl_GetFieldNoCopy(IRecordInfo *iface, PVOID pvData,
 339                             LPCOLESTR szFieldName, VARIANT *pvarField, PVOID *ppvDataCArray)
 340 {
 341     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 342     int i;
 343
 344     TRACE("(%p)->(%p %s %p %p)\n", This, pvData, debugstr_w(szFieldName), pvarField, ppvDataCArray);
 345
 346     if(!pvData || !szFieldName || !pvarField)
 347         return E_INVALIDARG;
 348
 349     for(i=0; i<This->n_vars; i++)
 350         if(!strcmpW(This->fields[i].name, szFieldName))
 351             break;
 352     if(i == This->n_vars)
 353         return TYPE_E_FIELDNOTFOUND;
 354
 355     VariantClear(pvarField);
 356     V_VT(pvarField) = VT_BYREF|This->fields[i].vt;
 357     V_BYREF(pvarField) = ((PBYTE)pvData)+This->fields[i].offset;
 358     *ppvDataCArray = NULL;
 359     return S_OK;
 360 }
 361
 362 static HRESULT WINAPI IRecordInfoImpl_PutField(IRecordInfo *iface, ULONG wFlags, PVOID pvData,
 363                                             LPCOLESTR szFieldName, VARIANT *pvarField)
 364 {
 365     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 366     int i;
 367
 368     TRACE("(%p)->(%08x %p %s %p)\n", This, wFlags, pvData, debugstr_w(szFieldName),
 369                                     pvarField);
 370
 371     if(!pvData || !szFieldName || !pvarField
 372             || (wFlags != INVOKE_PROPERTYPUTREF && wFlags != INVOKE_PROPERTYPUT))
 373         return E_INVALIDARG;
 374
 375     if(wFlags == INVOKE_PROPERTYPUTREF) {
 376         FIXME("wFlag == INVOKE_PROPERTYPUTREF not supported\n");
 377         return E_NOTIMPL;
 378     }
 379
 380     for(i=0; i<This->n_vars; i++)
 381         if(!strcmpW(This->fields[i].name, szFieldName))
 382             break;
 383     if(i == This->n_vars)
 384         return TYPE_E_FIELDNOTFOUND;
 385
 386     return copy_from_variant(pvarField, ((PBYTE)pvData)+This->fields[i].offset,
 387             This->fields[i].vt);
 388 }
 389
 390 static HRESULT WINAPI IRecordInfoImpl_PutFieldNoCopy(IRecordInfo *iface, ULONG wFlags,
 391                 PVOID pvData, LPCOLESTR szFieldName, VARIANT *pvarField)
 392 {
 393     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 394     int i;
 395
 396     FIXME("(%p)->(%08x %p %s %p) stub\n", This, wFlags, pvData, debugstr_w(szFieldName), pvarField);
 397
 398     if(!pvData || !szFieldName || !pvarField
 399             || (wFlags != INVOKE_PROPERTYPUTREF && wFlags != INVOKE_PROPERTYPUT))
 400         return E_INVALIDARG;
 401
 402     for(i=0; i<This->n_vars; i++)
 403         if(!strcmpW(This->fields[i].name, szFieldName))
 404             break;
 405     if(i == This->n_vars)
 406         return TYPE_E_FIELDNOTFOUND;
 407
 408     return E_NOTIMPL;
 409 }
 410
 411 static HRESULT WINAPI IRecordInfoImpl_GetFieldNames(IRecordInfo *iface, ULONG *pcNames,
 412                                                 BSTR *rgBstrNames)
 413 {
 414     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 415     ULONG n = This->n_vars;
 416     int i;
 417
 418     TRACE("(%p)->(%p %p)\n", This, pcNames, rgBstrNames);
 419
 420     if(!pcNames)
 421         return E_INVALIDARG;
 422
 423     if(*pcNames < n)
 424         n =  *pcNames;
 425
 426     if(rgBstrNames) {
 427         for(i=0; i<n; i++)
 428             rgBstrNames[i] = SysAllocString(This->fields[i].name);
 429     }
 430
 431     *pcNames = n;
 432     return S_OK;
 433 }
 434
 435 static BOOL WINAPI IRecordInfoImpl_IsMatchingType(IRecordInfo *iface, IRecordInfo *pRecordInfo)
 436 {
 437     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 438
 439     FIXME("(%p)->(%p) stub\n", This, pRecordInfo);
 440
 441     return FALSE;
 442 }
 443
 444 static PVOID WINAPI IRecordInfoImpl_RecordCreate(IRecordInfo *iface)
 445 {
 446     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 447
 448     TRACE("(%p)\n", This);
 449
 450     return HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, This->size);
 451 }
 452
 453 static HRESULT WINAPI IRecordInfoImpl_RecordCreateCopy(IRecordInfo *iface, PVOID pvSource,
 454                                                     PVOID *ppvDest)
 455 {
 456     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 457
 458     TRACE("(%p)->(%p %p)\n", This, pvSource, ppvDest);
 459
 460     if(!pvSource || !ppvDest)
 461         return E_INVALIDARG;
 462
 463     *ppvDest = IRecordInfo_RecordCreate(iface);
 464     return IRecordInfo_RecordCopy(iface, pvSource, *ppvDest);
 465 }
 466
 467 static HRESULT WINAPI IRecordInfoImpl_RecordDestroy(IRecordInfo *iface, PVOID pvRecord)
 468 {
 469     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 470     HRESULT hres;
 471
 472     TRACE("(%p)->(%p)\n", This, pvRecord);
 473
 474     hres = IRecordInfo_RecordClear(iface, pvRecord);
 475     if(FAILED(hres))
 476         return hres;
 477
 478     if(!HeapFree(GetProcessHeap(), 0, pvRecord))
 479         return E_INVALIDARG;
 480
 481     return S_OK;
 482 }
 483
 484 static const IRecordInfoVtbl IRecordInfoImplVtbl = {
 485     IRecordInfoImpl_QueryInterface,
 486     IRecordInfoImpl_AddRef,
 487     IRecordInfoImpl_Release,
 488     IRecordInfoImpl_RecordInit,
 489     IRecordInfoImpl_RecordClear,
 490     IRecordInfoImpl_RecordCopy,
 491     IRecordInfoImpl_GetGuid,
 492     IRecordInfoImpl_GetName,
 493     IRecordInfoImpl_GetSize,
 494     IRecordInfoImpl_GetTypeInfo,
 495     IRecordInfoImpl_GetField,
 496     IRecordInfoImpl_GetFieldNoCopy,
 497     IRecordInfoImpl_PutField,
 498     IRecordInfoImpl_PutFieldNoCopy,
 499     IRecordInfoImpl_GetFieldNames,
 500     IRecordInfoImpl_IsMatchingType,
 501     IRecordInfoImpl_RecordCreate,
 502     IRecordInfoImpl_RecordCreateCopy,
 503     IRecordInfoImpl_RecordDestroy
 504 };
 505
 506 /******************************************************************************
 507  *      GetRecordInfoFromGuids  [OLEAUT32.322]
 508  *
 509  * RETURNS
 510  *  Success: S_OK
 511  *  Failure: E_INVALIDARG, if any argument is invalid.
 512  */
 513 HRESULT WINAPI GetRecordInfoFromGuids(REFGUID rGuidTypeLib, ULONG uVerMajor,
 514                         ULONG uVerMinor, LCID lcid, REFGUID rGuidTypeInfo, IRecordInfo** ppRecInfo)
 515 {
 516     ITypeInfo *pTypeInfo;
 517     ITypeLib *pTypeLib;
 518     HRESULT hres;
 519
 520     TRACE("(%p,%d,%d,%d,%p,%p)\n", rGuidTypeLib, uVerMajor, uVerMinor,
 521             lcid, rGuidTypeInfo, ppRecInfo);
 522
 523     hres = LoadRegTypeLib(rGuidTypeLib, uVerMajor, uVerMinor, lcid, &pTypeLib);
 524     if(FAILED(hres)) {
 525         WARN("LoadRegTypeLib failed!\n");
 526         return hres;
 527     }
 528
 529     hres = ITypeLib_GetTypeInfoOfGuid(pTypeLib, rGuidTypeInfo, &pTypeInfo);
 530     ITypeLib_Release(pTypeLib);
 531     if(FAILED(hres)) {
 532         WARN("GetTypeInfoOfGuid failed!\n");
 533         return hres;
 534     }
 535
 536     hres = GetRecordInfoFromTypeInfo(pTypeInfo, ppRecInfo);
 537     ITypeInfo_Release(pTypeInfo);
 538     return hres;
 539 }
 540
 541 /******************************************************************************
 542  *      GetRecordInfoFromTypeInfo [OLEAUT32.332]
 543  */
 544 HRESULT WINAPI GetRecordInfoFromTypeInfo(ITypeInfo* pTI, IRecordInfo** ppRecInfo) {
 545     HRESULT hres;
 546     TYPEATTR *typeattr;
 547     IRecordInfoImpl *ret;
 548     ITypeInfo *pTypeInfo;
 549     int i;
 550     GUID guid;
 551
 552     TRACE("(%p %p)\n", pTI, ppRecInfo);
 553
 554     if(!pTI || !ppRecInfo)
 555         return E_INVALIDARG;
 556
 557     hres = ITypeInfo_GetTypeAttr(pTI, &typeattr);
 558     if(FAILED(hres) || !typeattr) {
 559         WARN("GetTypeAttr failed: %08x\n", hres);
 560         return hres;
 561     }
 562
 563     if(typeattr->typekind == TKIND_ALIAS) {
 564         hres = ITypeInfo_GetRefTypeInfo(pTI, typeattr->tdescAlias.u.hreftype, &pTypeInfo);
 565         guid = typeattr->guid;
 566         ITypeInfo_ReleaseTypeAttr(pTI, typeattr);
 567         if(FAILED(hres)) {
 568             WARN("GetRefTypeInfo failed: %08x\n", hres);
 569             return hres;
 570         }
 571         ITypeInfo_GetTypeAttr(pTypeInfo, &typeattr);
 572     }else  {
 573         pTypeInfo = pTI;
 574         ITypeInfo_AddRef(pTypeInfo);
 575         guid = typeattr->guid;
 576     }
 577
 578     if(typeattr->typekind != TKIND_RECORD) {
 579         WARN("typekind != TKIND_RECORD\n");
 580         ITypeInfo_ReleaseTypeAttr(pTypeInfo, typeattr);
 581         ITypeInfo_Release(pTypeInfo);
 582         return E_INVALIDARG;
 583     }
 584
 585     ret = HeapAlloc(GetProcessHeap(), 0, sizeof(*ret));
 586     ret->lpVtbl = &IRecordInfoImplVtbl;
 587     ret->ref = 1;
 588     ret->pTypeInfo = pTypeInfo;
 589     ret->n_vars = typeattr->cVars;
 590     ret->size = typeattr->cbSizeInstance;
 591     ITypeInfo_ReleaseTypeAttr(pTypeInfo, typeattr);
 592
 593     ret->guid = guid;
 594
 595     /* NOTE: Windows implementation calls ITypeInfo::GetCantainingTypeLib and
 596      *       ITypeLib::GetLibAttr, but we currently don't need this.
 597      */
 598
 599     hres = ITypeInfo_GetDocumentation(pTypeInfo, MEMBERID_NIL, &ret->name, NULL, NULL, NULL);
 600     if(FAILED(hres)) {
 601         WARN("ITypeInfo::GetDocumentation failed\n");
 602         ret->name = NULL;
 603     }
 604
 605     ret->fields = HeapAlloc(GetProcessHeap(), 0, ret->n_vars*sizeof(VARDESC));
 606     for(i = 0; i<ret->n_vars; i++) {
 607         VARDESC *vardesc;
 608         hres = ITypeInfo_GetVarDesc(pTypeInfo, i, &vardesc);
 609         if(FAILED(hres)) {
 610             WARN("GetVarDesc failed\n");
 611             continue;
 612         }
 613         ret->fields[i].vt = vardesc->elemdescVar.tdesc.vt;
 614         ret->fields[i].varkind = vardesc->varkind;
 615         ret->fields[i].offset = vardesc->u.oInst;
 616         hres = ITypeInfo_GetDocumentation(pTypeInfo, vardesc->memid, &ret->fields[i].name,
 617                 NULL, NULL, NULL);
 618         if(FAILED(hres))
 619             WARN("GetDocumentation failed: %08x\n", hres);
 620         ITypeInfo_ReleaseVarDesc(pTypeInfo, vardesc);
 621     }
 622
 623     *ppRecInfo = (IRecordInfo*)ret;
 624
 625     return S_OK;
 626 }