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     IRecordInfo IRecordInfo_iface;
  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 inline IRecordInfoImpl *impl_from_IRecordInfo(IRecordInfo *iface)
  57 {
  58     return CONTAINING_RECORD(iface, IRecordInfoImpl, IRecordInfo_iface);
  59 }
  60
  61 static HRESULT copy_to_variant(void *src, VARIANT *pvar, enum VARENUM vt)
  62 {
  63     TRACE("%p %p %d\n", src, pvar, vt);
  64
  65 #define CASE_COPY(x) \
  66     case VT_ ## x: \
  67         memcpy(&V_ ## x(pvar), src, sizeof(V_ ## x(pvar))); \
  68         break
  69
  70     switch(vt) {
  71         CASE_COPY(I2);
  72         CASE_COPY(I4);
  73         CASE_COPY(R4);
  74         CASE_COPY(R8);
  75         CASE_COPY(CY);
  76         CASE_COPY(DATE);
  77         CASE_COPY(BSTR);
  78         CASE_COPY(ERROR);
  79         CASE_COPY(BOOL);
  80         CASE_COPY(DECIMAL);
  81         CASE_COPY(I1);
  82         CASE_COPY(UI1);
  83         CASE_COPY(UI2);
  84         CASE_COPY(UI4);
  85         CASE_COPY(I8);
  86         CASE_COPY(UI8);
  87         CASE_COPY(INT);
  88         CASE_COPY(UINT);
  89         CASE_COPY(INT_PTR);
  90         CASE_COPY(UINT_PTR);
  91     default:
  92         FIXME("Not supported type: %d\n", vt);
  93         return E_NOTIMPL;
  94     };
  95 #undef CASE_COPY
  96
  97     V_VT(pvar) = vt;
  98     return S_OK;
  99 }
 100
 101 static HRESULT copy_from_variant(VARIANT *src, void *dest, enum VARENUM vt)
 102 {
 103     VARIANT var;
 104     HRESULT hres;
 105
 106     TRACE("(%p(%d) %p %d)\n", src, V_VT(src), dest, vt);
 107
 108     hres = VariantChangeType(&var, src, 0, vt);
 109     if(FAILED(hres))
 110         return hres;
 111
 112 #define CASE_COPY(x) \
 113     case VT_ ## x: \
 114         memcpy(dest, &V_ ## x(&var), sizeof(V_ ## x(&var))); \
 115         break
 116
 117     switch(vt) {
 118         CASE_COPY(I2);
 119         CASE_COPY(I4);
 120         CASE_COPY(R4);
 121         CASE_COPY(R8);
 122         CASE_COPY(CY);
 123         CASE_COPY(DATE);
 124         CASE_COPY(BSTR);
 125         CASE_COPY(ERROR);
 126         CASE_COPY(BOOL);
 127         CASE_COPY(DECIMAL);
 128         CASE_COPY(I1);
 129         CASE_COPY(UI1);
 130         CASE_COPY(UI2);
 131         CASE_COPY(UI4);
 132         CASE_COPY(I8);
 133         CASE_COPY(UI8);
 134         CASE_COPY(INT);
 135         CASE_COPY(UINT);
 136         CASE_COPY(INT_PTR);
 137         CASE_COPY(UINT_PTR);
 138     default:
 139         FIXME("Not supported type: %d\n", V_VT(&var));
 140         return E_NOTIMPL;
 141     };
 142 #undef CASE_COPY
 143     return S_OK;
 144 }
 145
 146 static HRESULT WINAPI IRecordInfoImpl_QueryInterface(IRecordInfo *iface, REFIID riid,
 147                                                 void **ppvObject)
 148 {
 149     TRACE("(%p)->(%s %p)\n", iface, debugstr_guid(riid), ppvObject);
 150
 151     if(IsEqualGUID(&IID_IUnknown, riid) || IsEqualGUID(&IID_IRecordInfo, riid)) {
 152        *ppvObject = iface;
 153        IRecordInfo_AddRef(iface);
 154        return S_OK;
 155     }
 156
 157     FIXME("Not supported interface: %s\n", debugstr_guid(riid));
 158     return E_NOINTERFACE;
 159 }
 160
 161 static ULONG WINAPI IRecordInfoImpl_AddRef(IRecordInfo *iface)
 162 {
 163     IRecordInfoImpl *This = impl_from_IRecordInfo(iface);
 164     ULONG ref = InterlockedIncrement(&This->ref);
 165     TRACE("(%p) -> %d\n", This, ref);
 166     return ref;
 167 }
 168
 169 static ULONG WINAPI IRecordInfoImpl_Release(IRecordInfo *iface)
 170 {
 171     IRecordInfoImpl *This = impl_from_IRecordInfo(iface);
 172     ULONG ref = InterlockedDecrement(&This->ref);
 173
 174     TRACE("(%p) -> %d\n", This, ref);
 175
 176     if(!ref) {
 177         int i;
 178         for(i=0; i<This->n_vars; i++)
 179             SysFreeString(This->fields[i].name);
 180         HeapFree(GetProcessHeap(), 0, This->name);
 181         HeapFree(GetProcessHeap(), 0, This->fields);
 182         ITypeInfo_Release(This->pTypeInfo);
 183         HeapFree(GetProcessHeap(), 0, This);
 184     }
 185     return ref;
 186 }
 187
 188 static HRESULT WINAPI IRecordInfoImpl_RecordInit(IRecordInfo *iface, PVOID pvNew)
 189 {
 190     IRecordInfoImpl *This = impl_from_IRecordInfo(iface);
 191     TRACE("(%p)->(%p)\n", This, pvNew);
 192
 193     if(!pvNew)
 194         return E_INVALIDARG;
 195
 196     memset(pvNew, 0, This->size);
 197     return S_OK;
 198 }
 199
 200 static HRESULT WINAPI IRecordInfoImpl_RecordClear(IRecordInfo *iface, PVOID pvExisting)
 201 {
 202     IRecordInfoImpl *This = impl_from_IRecordInfo(iface);
 203     int i;
 204     PVOID var;
 205
 206     TRACE("(%p)->(%p)\n", This, pvExisting);
 207
 208     if(!pvExisting)
 209         return E_INVALIDARG;
 210
 211     for(i=0; i<This->n_vars; i++) {
 212         if(This->fields[i].varkind != VAR_PERINSTANCE) {
 213             ERR("varkind != VAR_PERINSTANCE\n");
 214             continue;
 215         }
 216         var = ((PBYTE)pvExisting)+This->fields[i].offset;
 217         switch(This->fields[i].vt) {
 218             case VT_BSTR:
 219                SysFreeString(*(BSTR*)var);
 220                 *(BSTR*)var = NULL;
 221                 break;
 222             case VT_I2:
 223             case VT_I4:
 224             case VT_R4:
 225             case VT_R8:
 226             case VT_CY:
 227             case VT_DATE:
 228             case VT_ERROR:
 229             case VT_BOOL:
 230             case VT_DECIMAL:
 231             case VT_I1:
 232             case VT_UI1:
 233             case VT_UI2:
 234             case VT_UI4:
 235             case VT_I8:
 236             case VT_UI8:
 237             case VT_INT:
 238             case VT_UINT:
 239                 break;
 240             case VT_INT_PTR:
 241             case VT_UINT_PTR:
 242                 *(void**)var = NULL;
 243                 break;
 244             case VT_SAFEARRAY:
 245                 SafeArrayDestroy(var);
 246                 break;
 247             default:
 248                 FIXME("Not supported vt = %d\n", This->fields[i].vt);
 249                 break;
 250         }
 251     }
 252
 253     return S_OK;
 254 }
 255
 256 static HRESULT WINAPI IRecordInfoImpl_RecordCopy(IRecordInfo *iface, PVOID pvExisting,
 257                                                 PVOID pvNew)
 258 {
 259     IRecordInfoImpl *This = impl_from_IRecordInfo(iface);
 260
 261     TRACE("(%p)->(%p %p)\n", This, pvExisting, pvNew);
 262
 263     if(!pvExisting || !pvNew)
 264         return E_INVALIDARG;
 265
 266     memcpy(pvExisting, pvNew, This->size);
 267     return S_OK;
 268 }
 269
 270 static HRESULT WINAPI IRecordInfoImpl_GetGuid(IRecordInfo *iface, GUID *pguid)
 271 {
 272     IRecordInfoImpl *This = impl_from_IRecordInfo(iface);
 273
 274     TRACE("(%p)->(%p)\n", This, pguid);
 275
 276     if(!pguid)
 277         return E_INVALIDARG;
 278
 279     *pguid = This->guid;
 280     return S_OK;
 281 }
 282
 283 static HRESULT WINAPI IRecordInfoImpl_GetName(IRecordInfo *iface, BSTR *pbstrName)
 284 {
 285     IRecordInfoImpl *This = impl_from_IRecordInfo(iface);
 286
 287     TRACE("(%p)->(%p)\n", This, pbstrName);
 288
 289     if(!pbstrName)
 290         return E_INVALIDARG;
 291
 292     *pbstrName = SysAllocString(This->name);
 293     return S_OK;
 294 }
 295
 296 static HRESULT WINAPI IRecordInfoImpl_GetSize(IRecordInfo *iface, ULONG *pcbSize)
 297 {
 298     IRecordInfoImpl *This = impl_from_IRecordInfo(iface);
 299
 300     TRACE("(%p)->(%p)\n", This, pcbSize);
 301
 302     if(!pcbSize)
 303         return E_INVALIDARG;
 304
 305     *pcbSize = This->size;
 306     return S_OK;
 307 }
 308
 309 static HRESULT WINAPI IRecordInfoImpl_GetTypeInfo(IRecordInfo *iface, ITypeInfo **ppTypeInfo)
 310 {
 311     IRecordInfoImpl *This = impl_from_IRecordInfo(iface);
 312
 313     TRACE("(%p)->(%p)\n", This, ppTypeInfo);
 314
 315     if(!ppTypeInfo)
 316         return E_INVALIDARG;
 317
 318     ITypeInfo_AddRef(This->pTypeInfo);
 319     *ppTypeInfo = This->pTypeInfo;
 320
 321     return S_OK;
 322 }
 323
 324 static HRESULT WINAPI IRecordInfoImpl_GetField(IRecordInfo *iface, PVOID pvData,
 325                                                 LPCOLESTR szFieldName, VARIANT *pvarField)
 326 {
 327     IRecordInfoImpl *This = impl_from_IRecordInfo(iface);
 328     int i;
 329
 330     TRACE("(%p)->(%p %s %p)\n", This, pvData, debugstr_w(szFieldName), pvarField);
 331
 332     if(!pvData || !szFieldName || !pvarField)
 333         return E_INVALIDARG;
 334
 335     for(i=0; i<This->n_vars; i++)
 336         if(!strcmpW(This->fields[i].name, szFieldName))
 337             break;
 338     if(i == This->n_vars)
 339         return TYPE_E_FIELDNOTFOUND;
 340
 341     VariantClear(pvarField);
 342     return copy_to_variant(((PBYTE)pvData)+This->fields[i].offset, pvarField,
 343             This->fields[i].vt);
 344 }
 345
 346 static HRESULT WINAPI IRecordInfoImpl_GetFieldNoCopy(IRecordInfo *iface, PVOID pvData,
 347                             LPCOLESTR szFieldName, VARIANT *pvarField, PVOID *ppvDataCArray)
 348 {
 349     IRecordInfoImpl *This = impl_from_IRecordInfo(iface);
 350     int i;
 351
 352     TRACE("(%p)->(%p %s %p %p)\n", This, pvData, debugstr_w(szFieldName), pvarField, ppvDataCArray);
 353
 354     if(!pvData || !szFieldName || !pvarField)
 355         return E_INVALIDARG;
 356
 357     for(i=0; i<This->n_vars; i++)
 358         if(!strcmpW(This->fields[i].name, szFieldName))
 359             break;
 360     if(i == This->n_vars)
 361         return TYPE_E_FIELDNOTFOUND;
 362
 363     VariantClear(pvarField);
 364     V_VT(pvarField) = VT_BYREF|This->fields[i].vt;
 365     V_BYREF(pvarField) = ((PBYTE)pvData)+This->fields[i].offset;
 366     *ppvDataCArray = NULL;
 367     return S_OK;
 368 }
 369
 370 static HRESULT WINAPI IRecordInfoImpl_PutField(IRecordInfo *iface, ULONG wFlags, PVOID pvData,
 371                                             LPCOLESTR szFieldName, VARIANT *pvarField)
 372 {
 373     IRecordInfoImpl *This = impl_from_IRecordInfo(iface);
 374     int i;
 375
 376     TRACE("(%p)->(%08x %p %s %p)\n", This, wFlags, pvData, debugstr_w(szFieldName),
 377                                     pvarField);
 378
 379     if(!pvData || !szFieldName || !pvarField
 380             || (wFlags != INVOKE_PROPERTYPUTREF && wFlags != INVOKE_PROPERTYPUT))
 381         return E_INVALIDARG;
 382
 383     if(wFlags == INVOKE_PROPERTYPUTREF) {
 384         FIXME("wFlag == INVOKE_PROPERTYPUTREF not supported\n");
 385         return E_NOTIMPL;
 386     }
 387
 388     for(i=0; i<This->n_vars; i++)
 389         if(!strcmpW(This->fields[i].name, szFieldName))
 390             break;
 391     if(i == This->n_vars)
 392         return TYPE_E_FIELDNOTFOUND;
 393
 394     return copy_from_variant(pvarField, ((PBYTE)pvData)+This->fields[i].offset,
 395             This->fields[i].vt);
 396 }
 397
 398 static HRESULT WINAPI IRecordInfoImpl_PutFieldNoCopy(IRecordInfo *iface, ULONG wFlags,
 399                 PVOID pvData, LPCOLESTR szFieldName, VARIANT *pvarField)
 400 {
 401     IRecordInfoImpl *This = impl_from_IRecordInfo(iface);
 402     int i;
 403
 404     FIXME("(%p)->(%08x %p %s %p) stub\n", This, wFlags, pvData, debugstr_w(szFieldName), pvarField);
 405
 406     if(!pvData || !szFieldName || !pvarField
 407             || (wFlags != INVOKE_PROPERTYPUTREF && wFlags != INVOKE_PROPERTYPUT))
 408         return E_INVALIDARG;
 409
 410     for(i=0; i<This->n_vars; i++)
 411         if(!strcmpW(This->fields[i].name, szFieldName))
 412             break;
 413     if(i == This->n_vars)
 414         return TYPE_E_FIELDNOTFOUND;
 415
 416     return E_NOTIMPL;
 417 }
 418
 419 static HRESULT WINAPI IRecordInfoImpl_GetFieldNames(IRecordInfo *iface, ULONG *pcNames,
 420                                                 BSTR *rgBstrNames)
 421 {
 422     IRecordInfoImpl *This = impl_from_IRecordInfo(iface);
 423     ULONG n = This->n_vars, i;
 424
 425     TRACE("(%p)->(%p %p)\n", This, pcNames, rgBstrNames);
 426
 427     if(!pcNames)
 428         return E_INVALIDARG;
 429
 430     if(*pcNames < n)
 431         n =  *pcNames;
 432
 433     if(rgBstrNames) {
 434         for(i=0; i<n; i++)
 435             rgBstrNames[i] = SysAllocString(This->fields[i].name);
 436     }
 437
 438     *pcNames = n;
 439     return S_OK;
 440 }
 441
 442 static BOOL WINAPI IRecordInfoImpl_IsMatchingType(IRecordInfo *iface, IRecordInfo *pRecordInfo)
 443 {
 444     IRecordInfoImpl *This = impl_from_IRecordInfo(iface);
 445
 446     FIXME("(%p)->(%p) stub\n", This, pRecordInfo);
 447
 448     return FALSE;
 449 }
 450
 451 static PVOID WINAPI IRecordInfoImpl_RecordCreate(IRecordInfo *iface)
 452 {
 453     IRecordInfoImpl *This = impl_from_IRecordInfo(iface);
 454
 455     TRACE("(%p)\n", This);
 456
 457     return HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, This->size);
 458 }
 459
 460 static HRESULT WINAPI IRecordInfoImpl_RecordCreateCopy(IRecordInfo *iface, PVOID pvSource,
 461                                                     PVOID *ppvDest)
 462 {
 463     IRecordInfoImpl *This = impl_from_IRecordInfo(iface);
 464
 465     TRACE("(%p)->(%p %p)\n", This, pvSource, ppvDest);
 466
 467     if(!pvSource || !ppvDest)
 468         return E_INVALIDARG;
 469
 470     *ppvDest = IRecordInfo_RecordCreate(iface);
 471     return IRecordInfo_RecordCopy(iface, pvSource, *ppvDest);
 472 }
 473
 474 static HRESULT WINAPI IRecordInfoImpl_RecordDestroy(IRecordInfo *iface, PVOID pvRecord)
 475 {
 476     IRecordInfoImpl *This = impl_from_IRecordInfo(iface);
 477     HRESULT hres;
 478
 479     TRACE("(%p)->(%p)\n", This, pvRecord);
 480
 481     hres = IRecordInfo_RecordClear(iface, pvRecord);
 482     if(FAILED(hres))
 483         return hres;
 484
 485     if(!HeapFree(GetProcessHeap(), 0, pvRecord))
 486         return E_INVALIDARG;
 487
 488     return S_OK;
 489 }
 490
 491 static const IRecordInfoVtbl IRecordInfoImplVtbl = {
 492     IRecordInfoImpl_QueryInterface,
 493     IRecordInfoImpl_AddRef,
 494     IRecordInfoImpl_Release,
 495     IRecordInfoImpl_RecordInit,
 496     IRecordInfoImpl_RecordClear,
 497     IRecordInfoImpl_RecordCopy,
 498     IRecordInfoImpl_GetGuid,
 499     IRecordInfoImpl_GetName,
 500     IRecordInfoImpl_GetSize,
 501     IRecordInfoImpl_GetTypeInfo,
 502     IRecordInfoImpl_GetField,
 503     IRecordInfoImpl_GetFieldNoCopy,
 504     IRecordInfoImpl_PutField,
 505     IRecordInfoImpl_PutFieldNoCopy,
 506     IRecordInfoImpl_GetFieldNames,
 507     IRecordInfoImpl_IsMatchingType,
 508     IRecordInfoImpl_RecordCreate,
 509     IRecordInfoImpl_RecordCreateCopy,
 510     IRecordInfoImpl_RecordDestroy
 511 };
 512
 513 /******************************************************************************
 514  *      GetRecordInfoFromGuids  [OLEAUT32.322]
 515  *
 516  * RETURNS
 517  *  Success: S_OK
 518  *  Failure: E_INVALIDARG, if any argument is invalid.
 519  */
 520 HRESULT WINAPI GetRecordInfoFromGuids(REFGUID rGuidTypeLib, ULONG uVerMajor,
 521                         ULONG uVerMinor, LCID lcid, REFGUID rGuidTypeInfo, IRecordInfo** ppRecInfo)
 522 {
 523     ITypeInfo *pTypeInfo;
 524     ITypeLib *pTypeLib;
 525     HRESULT hres;
 526
 527     TRACE("(%p,%d,%d,%d,%p,%p)\n", rGuidTypeLib, uVerMajor, uVerMinor,
 528             lcid, rGuidTypeInfo, ppRecInfo);
 529
 530     hres = LoadRegTypeLib(rGuidTypeLib, uVerMajor, uVerMinor, lcid, &pTypeLib);
 531     if(FAILED(hres)) {
 532         WARN("LoadRegTypeLib failed!\n");
 533         return hres;
 534     }
 535
 536     hres = ITypeLib_GetTypeInfoOfGuid(pTypeLib, rGuidTypeInfo, &pTypeInfo);
 537     ITypeLib_Release(pTypeLib);
 538     if(FAILED(hres)) {
 539         WARN("GetTypeInfoOfGuid failed!\n");
 540         return hres;
 541     }
 542
 543     hres = GetRecordInfoFromTypeInfo(pTypeInfo, ppRecInfo);
 544     ITypeInfo_Release(pTypeInfo);
 545     return hres;
 546 }
 547
 548 /******************************************************************************
 549  *      GetRecordInfoFromTypeInfo [OLEAUT32.332]
 550  */
 551 HRESULT WINAPI GetRecordInfoFromTypeInfo(ITypeInfo* pTI, IRecordInfo** ppRecInfo) {
 552     HRESULT hres;
 553     TYPEATTR *typeattr;
 554     IRecordInfoImpl *ret;
 555     ITypeInfo *pTypeInfo;
 556     int i;
 557     GUID guid;
 558
 559     TRACE("(%p %p)\n", pTI, ppRecInfo);
 560
 561     if(!pTI || !ppRecInfo)
 562         return E_INVALIDARG;
 563
 564     hres = ITypeInfo_GetTypeAttr(pTI, &typeattr);
 565     if(FAILED(hres) || !typeattr) {
 566         WARN("GetTypeAttr failed: %08x\n", hres);
 567         return hres;
 568     }
 569
 570     if(typeattr->typekind == TKIND_ALIAS) {
 571         hres = ITypeInfo_GetRefTypeInfo(pTI, typeattr->tdescAlias.u.hreftype, &pTypeInfo);
 572         guid = typeattr->guid;
 573         ITypeInfo_ReleaseTypeAttr(pTI, typeattr);
 574         if(FAILED(hres)) {
 575             WARN("GetRefTypeInfo failed: %08x\n", hres);
 576             return hres;
 577         }
 578         ITypeInfo_GetTypeAttr(pTypeInfo, &typeattr);
 579     }else  {
 580         pTypeInfo = pTI;
 581         ITypeInfo_AddRef(pTypeInfo);
 582         guid = typeattr->guid;
 583     }
 584
 585     if(typeattr->typekind != TKIND_RECORD) {
 586         WARN("typekind != TKIND_RECORD\n");
 587         ITypeInfo_ReleaseTypeAttr(pTypeInfo, typeattr);
 588         ITypeInfo_Release(pTypeInfo);
 589         return E_INVALIDARG;
 590     }
 591
 592     ret = HeapAlloc(GetProcessHeap(), 0, sizeof(*ret));
 593     ret->IRecordInfo_iface.lpVtbl = &IRecordInfoImplVtbl;
 594     ret->ref = 1;
 595     ret->pTypeInfo = pTypeInfo;
 596     ret->n_vars = typeattr->cVars;
 597     ret->size = typeattr->cbSizeInstance;
 598     ITypeInfo_ReleaseTypeAttr(pTypeInfo, typeattr);
 599
 600     ret->guid = guid;
 601
 602     /* NOTE: Windows implementation calls ITypeInfo::GetCantainingTypeLib and
 603      *       ITypeLib::GetLibAttr, but we currently don't need this.
 604      */
 605
 606     hres = ITypeInfo_GetDocumentation(pTypeInfo, MEMBERID_NIL, &ret->name, NULL, NULL, NULL);
 607     if(FAILED(hres)) {
 608         WARN("ITypeInfo::GetDocumentation failed\n");
 609         ret->name = NULL;
 610     }
 611
 612     ret->fields = HeapAlloc(GetProcessHeap(), 0, ret->n_vars*sizeof(VARDESC));
 613     for(i = 0; i<ret->n_vars; i++) {
 614         VARDESC *vardesc;
 615         hres = ITypeInfo_GetVarDesc(pTypeInfo, i, &vardesc);
 616         if(FAILED(hres)) {
 617             WARN("GetVarDesc failed\n");
 618             continue;
 619         }
 620         ret->fields[i].vt = vardesc->elemdescVar.tdesc.vt;
 621         ret->fields[i].varkind = vardesc->varkind;
 622         ret->fields[i].offset = vardesc->u.oInst;
 623         hres = ITypeInfo_GetDocumentation(pTypeInfo, vardesc->memid, &ret->fields[i].name,
 624                 NULL, NULL, NULL);
 625         if(FAILED(hres))
 626             WARN("GetDocumentation failed: %08x\n", hres);
 627         ITypeInfo_ReleaseVarDesc(pTypeInfo, vardesc);
 628     }
 629
 630     *ppRecInfo = &ret->IRecordInfo_iface;
 631
 632     return S_OK;
 633 }