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         memcpy(&V_ ## x(pvar), src, sizeof(V_ ## x(pvar))); \
  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         memcpy(dest, &V_ ## x(&var), sizeof(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             case VT_SAFEARRAY:
 240                 SafeArrayDestroy((SAFEARRAY*)var);
 241                 break;
 242             default:
 243                 FIXME("Not supported vt = %d\n", This->fields[i].vt);
 244                 break;
 245         }
 246     }
 247
 248     return S_OK;
 249 }
 250
 251 static HRESULT WINAPI IRecordInfoImpl_RecordCopy(IRecordInfo *iface, PVOID pvExisting,
 252                                                 PVOID pvNew)
 253 {
 254     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 255
 256     TRACE("(%p)->(%p %p)\n", This, pvExisting, pvNew);
 257
 258     if(!pvExisting || !pvNew)
 259         return E_INVALIDARG;
 260
 261     memcpy(pvExisting, pvNew, This->size);
 262     return S_OK;
 263 }
 264
 265 static HRESULT WINAPI IRecordInfoImpl_GetGuid(IRecordInfo *iface, GUID *pguid)
 266 {
 267     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 268
 269     TRACE("(%p)->(%p)\n", This, pguid);
 270
 271     if(!pguid)
 272         return E_INVALIDARG;
 273
 274     *pguid = This->guid;
 275     return S_OK;
 276 }
 277
 278 static HRESULT WINAPI IRecordInfoImpl_GetName(IRecordInfo *iface, BSTR *pbstrName)
 279 {
 280     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 281
 282     TRACE("(%p)->(%p)\n", This, pbstrName);
 283
 284     if(!pbstrName)
 285         return E_INVALIDARG;
 286
 287     *pbstrName = SysAllocString(This->name);
 288     return S_OK;
 289 }
 290
 291 static HRESULT WINAPI IRecordInfoImpl_GetSize(IRecordInfo *iface, ULONG *pcbSize)
 292 {
 293     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 294
 295     TRACE("(%p)->(%p)\n", This, pcbSize);
 296
 297     if(!pcbSize)
 298         return E_INVALIDARG;
 299
 300     *pcbSize = This->size;
 301     return S_OK;
 302 }
 303
 304 static HRESULT WINAPI IRecordInfoImpl_GetTypeInfo(IRecordInfo *iface, ITypeInfo **ppTypeInfo)
 305 {
 306     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 307
 308     TRACE("(%p)->(%p)\n", This, ppTypeInfo);
 309
 310     if(!ppTypeInfo)
 311         return E_INVALIDARG;
 312
 313     ITypeInfo_AddRef(This->pTypeInfo);
 314     *ppTypeInfo = This->pTypeInfo;
 315
 316     return S_OK;
 317 }
 318
 319 static HRESULT WINAPI IRecordInfoImpl_GetField(IRecordInfo *iface, PVOID pvData,
 320                                                 LPCOLESTR szFieldName, VARIANT *pvarField)
 321 {
 322     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 323     int i;
 324
 325     TRACE("(%p)->(%p %s %p)\n", This, pvData, debugstr_w(szFieldName), pvarField);
 326
 327     if(!pvData || !szFieldName || !pvarField)
 328         return E_INVALIDARG;
 329
 330     for(i=0; i<This->n_vars; i++)
 331         if(!strcmpW(This->fields[i].name, szFieldName))
 332             break;
 333     if(i == This->n_vars)
 334         return TYPE_E_FIELDNOTFOUND;
 335
 336     VariantClear(pvarField);
 337     return copy_to_variant(((PBYTE)pvData)+This->fields[i].offset, pvarField,
 338             This->fields[i].vt);
 339 }
 340
 341 static HRESULT WINAPI IRecordInfoImpl_GetFieldNoCopy(IRecordInfo *iface, PVOID pvData,
 342                             LPCOLESTR szFieldName, VARIANT *pvarField, PVOID *ppvDataCArray)
 343 {
 344     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 345     int i;
 346
 347     TRACE("(%p)->(%p %s %p %p)\n", This, pvData, debugstr_w(szFieldName), pvarField, ppvDataCArray);
 348
 349     if(!pvData || !szFieldName || !pvarField)
 350         return E_INVALIDARG;
 351
 352     for(i=0; i<This->n_vars; i++)
 353         if(!strcmpW(This->fields[i].name, szFieldName))
 354             break;
 355     if(i == This->n_vars)
 356         return TYPE_E_FIELDNOTFOUND;
 357
 358     VariantClear(pvarField);
 359     V_VT(pvarField) = VT_BYREF|This->fields[i].vt;
 360     V_BYREF(pvarField) = ((PBYTE)pvData)+This->fields[i].offset;
 361     *ppvDataCArray = NULL;
 362     return S_OK;
 363 }
 364
 365 static HRESULT WINAPI IRecordInfoImpl_PutField(IRecordInfo *iface, ULONG wFlags, PVOID pvData,
 366                                             LPCOLESTR szFieldName, VARIANT *pvarField)
 367 {
 368     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 369     int i;
 370
 371     TRACE("(%p)->(%08x %p %s %p)\n", This, wFlags, pvData, debugstr_w(szFieldName),
 372                                     pvarField);
 373
 374     if(!pvData || !szFieldName || !pvarField
 375             || (wFlags != INVOKE_PROPERTYPUTREF && wFlags != INVOKE_PROPERTYPUT))
 376         return E_INVALIDARG;
 377
 378     if(wFlags == INVOKE_PROPERTYPUTREF) {
 379         FIXME("wFlag == INVOKE_PROPERTYPUTREF not supported\n");
 380         return E_NOTIMPL;
 381     }
 382
 383     for(i=0; i<This->n_vars; i++)
 384         if(!strcmpW(This->fields[i].name, szFieldName))
 385             break;
 386     if(i == This->n_vars)
 387         return TYPE_E_FIELDNOTFOUND;
 388
 389     return copy_from_variant(pvarField, ((PBYTE)pvData)+This->fields[i].offset,
 390             This->fields[i].vt);
 391 }
 392
 393 static HRESULT WINAPI IRecordInfoImpl_PutFieldNoCopy(IRecordInfo *iface, ULONG wFlags,
 394                 PVOID pvData, LPCOLESTR szFieldName, VARIANT *pvarField)
 395 {
 396     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 397     int i;
 398
 399     FIXME("(%p)->(%08x %p %s %p) stub\n", This, wFlags, pvData, debugstr_w(szFieldName), pvarField);
 400
 401     if(!pvData || !szFieldName || !pvarField
 402             || (wFlags != INVOKE_PROPERTYPUTREF && wFlags != INVOKE_PROPERTYPUT))
 403         return E_INVALIDARG;
 404
 405     for(i=0; i<This->n_vars; i++)
 406         if(!strcmpW(This->fields[i].name, szFieldName))
 407             break;
 408     if(i == This->n_vars)
 409         return TYPE_E_FIELDNOTFOUND;
 410
 411     return E_NOTIMPL;
 412 }
 413
 414 static HRESULT WINAPI IRecordInfoImpl_GetFieldNames(IRecordInfo *iface, ULONG *pcNames,
 415                                                 BSTR *rgBstrNames)
 416 {
 417     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 418     ULONG n = This->n_vars, i;
 419
 420     TRACE("(%p)->(%p %p)\n", This, pcNames, rgBstrNames);
 421
 422     if(!pcNames)
 423         return E_INVALIDARG;
 424
 425     if(*pcNames < n)
 426         n =  *pcNames;
 427
 428     if(rgBstrNames) {
 429         for(i=0; i<n; i++)
 430             rgBstrNames[i] = SysAllocString(This->fields[i].name);
 431     }
 432
 433     *pcNames = n;
 434     return S_OK;
 435 }
 436
 437 static BOOL WINAPI IRecordInfoImpl_IsMatchingType(IRecordInfo *iface, IRecordInfo *pRecordInfo)
 438 {
 439     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 440
 441     FIXME("(%p)->(%p) stub\n", This, pRecordInfo);
 442
 443     return FALSE;
 444 }
 445
 446 static PVOID WINAPI IRecordInfoImpl_RecordCreate(IRecordInfo *iface)
 447 {
 448     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 449
 450     TRACE("(%p)\n", This);
 451
 452     return HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, This->size);
 453 }
 454
 455 static HRESULT WINAPI IRecordInfoImpl_RecordCreateCopy(IRecordInfo *iface, PVOID pvSource,
 456                                                     PVOID *ppvDest)
 457 {
 458     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 459
 460     TRACE("(%p)->(%p %p)\n", This, pvSource, ppvDest);
 461
 462     if(!pvSource || !ppvDest)
 463         return E_INVALIDARG;
 464
 465     *ppvDest = IRecordInfo_RecordCreate(iface);
 466     return IRecordInfo_RecordCopy(iface, pvSource, *ppvDest);
 467 }
 468
 469 static HRESULT WINAPI IRecordInfoImpl_RecordDestroy(IRecordInfo *iface, PVOID pvRecord)
 470 {
 471     IRecordInfoImpl *This = (IRecordInfoImpl*)iface;
 472     HRESULT hres;
 473
 474     TRACE("(%p)->(%p)\n", This, pvRecord);
 475
 476     hres = IRecordInfo_RecordClear(iface, pvRecord);
 477     if(FAILED(hres))
 478         return hres;
 479
 480     if(!HeapFree(GetProcessHeap(), 0, pvRecord))
 481         return E_INVALIDARG;
 482
 483     return S_OK;
 484 }
 485
 486 static const IRecordInfoVtbl IRecordInfoImplVtbl = {
 487     IRecordInfoImpl_QueryInterface,
 488     IRecordInfoImpl_AddRef,
 489     IRecordInfoImpl_Release,
 490     IRecordInfoImpl_RecordInit,
 491     IRecordInfoImpl_RecordClear,
 492     IRecordInfoImpl_RecordCopy,
 493     IRecordInfoImpl_GetGuid,
 494     IRecordInfoImpl_GetName,
 495     IRecordInfoImpl_GetSize,
 496     IRecordInfoImpl_GetTypeInfo,
 497     IRecordInfoImpl_GetField,
 498     IRecordInfoImpl_GetFieldNoCopy,
 499     IRecordInfoImpl_PutField,
 500     IRecordInfoImpl_PutFieldNoCopy,
 501     IRecordInfoImpl_GetFieldNames,
 502     IRecordInfoImpl_IsMatchingType,
 503     IRecordInfoImpl_RecordCreate,
 504     IRecordInfoImpl_RecordCreateCopy,
 505     IRecordInfoImpl_RecordDestroy
 506 };
 507
 508 /******************************************************************************
 509  *      GetRecordInfoFromGuids  [OLEAUT32.322]
 510  *
 511  * RETURNS
 512  *  Success: S_OK
 513  *  Failure: E_INVALIDARG, if any argument is invalid.
 514  */
 515 HRESULT WINAPI GetRecordInfoFromGuids(REFGUID rGuidTypeLib, ULONG uVerMajor,
 516                         ULONG uVerMinor, LCID lcid, REFGUID rGuidTypeInfo, IRecordInfo** ppRecInfo)
 517 {
 518     ITypeInfo *pTypeInfo;
 519     ITypeLib *pTypeLib;
 520     HRESULT hres;
 521
 522     TRACE("(%p,%d,%d,%d,%p,%p)\n", rGuidTypeLib, uVerMajor, uVerMinor,
 523             lcid, rGuidTypeInfo, ppRecInfo);
 524
 525     hres = LoadRegTypeLib(rGuidTypeLib, uVerMajor, uVerMinor, lcid, &pTypeLib);
 526     if(FAILED(hres)) {
 527         WARN("LoadRegTypeLib failed!\n");
 528         return hres;
 529     }
 530
 531     hres = ITypeLib_GetTypeInfoOfGuid(pTypeLib, rGuidTypeInfo, &pTypeInfo);
 532     ITypeLib_Release(pTypeLib);
 533     if(FAILED(hres)) {
 534         WARN("GetTypeInfoOfGuid failed!\n");
 535         return hres;
 536     }
 537
 538     hres = GetRecordInfoFromTypeInfo(pTypeInfo, ppRecInfo);
 539     ITypeInfo_Release(pTypeInfo);
 540     return hres;
 541 }
 542
 543 /******************************************************************************
 544  *      GetRecordInfoFromTypeInfo [OLEAUT32.332]
 545  */
 546 HRESULT WINAPI GetRecordInfoFromTypeInfo(ITypeInfo* pTI, IRecordInfo** ppRecInfo) {
 547     HRESULT hres;
 548     TYPEATTR *typeattr;
 549     IRecordInfoImpl *ret;
 550     ITypeInfo *pTypeInfo;
 551     int i;
 552     GUID guid;
 553
 554     TRACE("(%p %p)\n", pTI, ppRecInfo);
 555
 556     if(!pTI || !ppRecInfo)
 557         return E_INVALIDARG;
 558
 559     hres = ITypeInfo_GetTypeAttr(pTI, &typeattr);
 560     if(FAILED(hres) || !typeattr) {
 561         WARN("GetTypeAttr failed: %08x\n", hres);
 562         return hres;
 563     }
 564
 565     if(typeattr->typekind == TKIND_ALIAS) {
 566         hres = ITypeInfo_GetRefTypeInfo(pTI, typeattr->tdescAlias.u.hreftype, &pTypeInfo);
 567         guid = typeattr->guid;
 568         ITypeInfo_ReleaseTypeAttr(pTI, typeattr);
 569         if(FAILED(hres)) {
 570             WARN("GetRefTypeInfo failed: %08x\n", hres);
 571             return hres;
 572         }
 573         ITypeInfo_GetTypeAttr(pTypeInfo, &typeattr);
 574     }else  {
 575         pTypeInfo = pTI;
 576         ITypeInfo_AddRef(pTypeInfo);
 577         guid = typeattr->guid;
 578     }
 579
 580     if(typeattr->typekind != TKIND_RECORD) {
 581         WARN("typekind != TKIND_RECORD\n");
 582         ITypeInfo_ReleaseTypeAttr(pTypeInfo, typeattr);
 583         ITypeInfo_Release(pTypeInfo);
 584         return E_INVALIDARG;
 585     }
 586
 587     ret = HeapAlloc(GetProcessHeap(), 0, sizeof(*ret));
 588     ret->lpVtbl = &IRecordInfoImplVtbl;
 589     ret->ref = 1;
 590     ret->pTypeInfo = pTypeInfo;
 591     ret->n_vars = typeattr->cVars;
 592     ret->size = typeattr->cbSizeInstance;
 593     ITypeInfo_ReleaseTypeAttr(pTypeInfo, typeattr);
 594
 595     ret->guid = guid;
 596
 597     /* NOTE: Windows implementation calls ITypeInfo::GetCantainingTypeLib and
 598      *       ITypeLib::GetLibAttr, but we currently don't need this.
 599      */
 600
 601     hres = ITypeInfo_GetDocumentation(pTypeInfo, MEMBERID_NIL, &ret->name, NULL, NULL, NULL);
 602     if(FAILED(hres)) {
 603         WARN("ITypeInfo::GetDocumentation failed\n");
 604         ret->name = NULL;
 605     }
 606
 607     ret->fields = HeapAlloc(GetProcessHeap(), 0, ret->n_vars*sizeof(VARDESC));
 608     for(i = 0; i<ret->n_vars; i++) {
 609         VARDESC *vardesc;
 610         hres = ITypeInfo_GetVarDesc(pTypeInfo, i, &vardesc);
 611         if(FAILED(hres)) {
 612             WARN("GetVarDesc failed\n");
 613             continue;
 614         }
 615         ret->fields[i].vt = vardesc->elemdescVar.tdesc.vt;
 616         ret->fields[i].varkind = vardesc->varkind;
 617         ret->fields[i].offset = vardesc->u.oInst;
 618         hres = ITypeInfo_GetDocumentation(pTypeInfo, vardesc->memid, &ret->fields[i].name,
 619                 NULL, NULL, NULL);
 620         if(FAILED(hres))
 621             WARN("GetDocumentation failed: %08x\n", hres);
 622         ITypeInfo_ReleaseVarDesc(pTypeInfo, vardesc);
 623     }
 624
 625     *ppRecInfo = (IRecordInfo*)ret;
 626
 627     return S_OK;
 628 }