dlls/msctf/compartmentmgr.c

   1 /*
   2  *  ITfCompartmentMgr implementation
   3  *
   4  *  Copyright 2009 Aric Stewart, CodeWeavers
   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
  21 #include "config.h"
  22
  23 #include <stdarg.h>
  24
  25 #define COBJMACROS
  26
  27 #include "wine/debug.h"
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "winreg.h"
  31 #include "winuser.h"
  32 #include "shlwapi.h"
  33 #include "winerror.h"
  34 #include "objbase.h"
  35 #include "oleauto.h"
  36 #include "olectl.h"
  37
  38 #include "wine/unicode.h"
  39 #include "wine/list.h"
  40
  41 #include "msctf.h"
  42 #include "msctf_internal.h"
  43
  44 WINE_DEFAULT_DEBUG_CHANNEL(msctf);
  45
  46 typedef struct tagCompartmentValue {
  47     struct list entry;
  48     GUID guid;
  49     TfClientId owner;
  50     ITfCompartment *compartment;
  51 } CompartmentValue;
  52
  53 typedef struct tagCompartmentMgr {
  54     const ITfCompartmentMgrVtbl *CompartmentMgrVtbl;
  55     LONG refCount;
  56
  57     IUnknown *pUnkOuter;
  58
  59     struct list values;
  60 } CompartmentMgr;
  61
  62 typedef struct tagCompartmentEnumGuid {
  63     const IEnumGUIDVtbl *Vtbl;
  64     LONG refCount;
  65
  66     struct list *values;
  67     struct list *cursor;
  68 } CompartmentEnumGuid;
  69
  70
  71 typedef struct tagCompartmentSink {
  72     struct list         entry;
  73     union {
  74         IUnknown            *pIUnknown;
  75         ITfCompartmentEventSink *pITfCompartmentEventSink;
  76     } interfaces;
  77 } CompartmentSink;
  78
  79 typedef struct tagCompartment {
  80     const ITfCompartmentVtbl *Vtbl;
  81     const ITfSourceVtbl *SourceVtbl;
  82     LONG refCount;
  83
  84     /* Only VT_I4, VT_UNKNOWN and VT_BSTR data types are allowed */
  85     VARIANT variant;
  86     CompartmentValue *valueData;
  87     struct list CompartmentEventSink;
  88 } Compartment;
  89
  90 static HRESULT CompartmentEnumGuid_Constructor(struct list* values, IEnumGUID **ppOut);
  91 static HRESULT Compartment_Constructor(CompartmentValue *value, ITfCompartment **ppOut);
  92
  93 static inline Compartment *impl_from_ITfSourceVtbl(ITfSource *iface)
  94 {
  95     return (Compartment *)((char *)iface - FIELD_OFFSET(Compartment,SourceVtbl));
  96 }
  97
  98 HRESULT CompartmentMgr_Destructor(ITfCompartmentMgr *iface)
  99 {
 100     CompartmentMgr *This = (CompartmentMgr *)iface;
 101     struct list *cursor, *cursor2;
 102
 103     LIST_FOR_EACH_SAFE(cursor, cursor2, &This->values)
 104     {
 105         CompartmentValue* value = LIST_ENTRY(cursor,CompartmentValue,entry);
 106         list_remove(cursor);
 107         ITfCompartment_Release(value->compartment);
 108         HeapFree(GetProcessHeap(),0,value);
 109     }
 110
 111     HeapFree(GetProcessHeap(),0,This);
 112     return S_OK;
 113 }
 114
 115 /*****************************************************
 116  * ITfCompartmentMgr functions
 117  *****************************************************/
 118 static HRESULT WINAPI CompartmentMgr_QueryInterface(ITfCompartmentMgr *iface, REFIID iid, LPVOID *ppvOut)
 119 {
 120     CompartmentMgr *This = (CompartmentMgr *)iface;
 121     if (This->pUnkOuter)
 122         return IUnknown_QueryInterface(This->pUnkOuter, iid, *ppvOut);
 123     else
 124     {
 125         *ppvOut = NULL;
 126
 127         if (IsEqualIID(iid, &IID_IUnknown) || IsEqualIID(iid, &IID_ITfCompartmentMgr))
 128         {
 129             *ppvOut = This;
 130         }
 131
 132         if (*ppvOut)
 133         {
 134             IUnknown_AddRef(iface);
 135             return S_OK;
 136         }
 137
 138         WARN("unsupported interface: %s\n", debugstr_guid(iid));
 139         return E_NOINTERFACE;
 140     }
 141 }
 142
 143 static ULONG WINAPI CompartmentMgr_AddRef(ITfCompartmentMgr *iface)
 144 {
 145     CompartmentMgr *This = (CompartmentMgr *)iface;
 146     if (This->pUnkOuter)
 147         return IUnknown_AddRef(This->pUnkOuter);
 148     else
 149         return InterlockedIncrement(&This->refCount);
 150 }
 151
 152 static ULONG WINAPI CompartmentMgr_Release(ITfCompartmentMgr *iface)
 153 {
 154     CompartmentMgr *This = (CompartmentMgr *)iface;
 155     if (This->pUnkOuter)
 156         return IUnknown_Release(This->pUnkOuter);
 157     else
 158     {
 159         ULONG ret;
 160
 161         ret = InterlockedDecrement(&This->refCount);
 162         if (ret == 0)
 163             CompartmentMgr_Destructor(iface);
 164         return ret;
 165     }
 166 }
 167
 168 static HRESULT WINAPI CompartmentMgr_GetCompartment(ITfCompartmentMgr *iface,
 169         REFGUID rguid, ITfCompartment **ppcomp)
 170 {
 171     CompartmentMgr *This = (CompartmentMgr *)iface;
 172     CompartmentValue* value;
 173     struct list *cursor;
 174     HRESULT hr;
 175
 176     TRACE("(%p) %s  %p\n",This,debugstr_guid(rguid),ppcomp);
 177
 178     LIST_FOR_EACH(cursor, &This->values)
 179     {
 180         value = LIST_ENTRY(cursor,CompartmentValue,entry);
 181         if (IsEqualGUID(rguid,&value->guid))
 182         {
 183             ITfCompartment_AddRef(value->compartment);
 184             *ppcomp = value->compartment;
 185             return S_OK;
 186         }
 187     }
 188
 189     value = HeapAlloc(GetProcessHeap(),0,sizeof(CompartmentValue));
 190     value->guid = *rguid;
 191     value->owner = 0;
 192     hr = Compartment_Constructor(value,&value->compartment);
 193     if (SUCCEEDED(hr))
 194     {
 195         list_add_head(&This->values,&value->entry);
 196         ITfCompartment_AddRef(value->compartment);
 197         *ppcomp = value->compartment;
 198     }
 199     else
 200     {
 201         HeapFree(GetProcessHeap(),0,value);
 202         *ppcomp = NULL;
 203     }
 204     return hr;
 205 }
 206
 207 static HRESULT WINAPI CompartmentMgr_ClearCompartment(ITfCompartmentMgr *iface,
 208     TfClientId tid, REFGUID rguid)
 209 {
 210     struct list *cursor;
 211     CompartmentMgr *This = (CompartmentMgr *)iface;
 212     TRACE("(%p) %i %s\n",This,tid,debugstr_guid(rguid));
 213
 214     LIST_FOR_EACH(cursor, &This->values)
 215     {
 216         CompartmentValue* value = LIST_ENTRY(cursor,CompartmentValue,entry);
 217         if (IsEqualGUID(rguid,&value->guid))
 218         {
 219             if (value->owner && tid != value->owner)
 220                 return E_UNEXPECTED;
 221             list_remove(cursor);
 222             ITfCompartment_Release(value->compartment);
 223             HeapFree(GetProcessHeap(),0,value);
 224             return S_OK;
 225         }
 226     }
 227
 228     return CONNECT_E_NOCONNECTION;
 229 }
 230
 231 static HRESULT WINAPI CompartmentMgr_EnumCompartments(ITfCompartmentMgr *iface,
 232  IEnumGUID **ppEnum)
 233 {
 234     CompartmentMgr *This = (CompartmentMgr *)iface;
 235     TRACE("(%p) %p\n",This,ppEnum);
 236     if (!ppEnum)
 237         return E_INVALIDARG;
 238     return CompartmentEnumGuid_Constructor(&This->values, ppEnum);
 239 }
 240
 241 static const ITfCompartmentMgrVtbl CompartmentMgr_CompartmentMgrVtbl =
 242 {
 243     CompartmentMgr_QueryInterface,
 244     CompartmentMgr_AddRef,
 245     CompartmentMgr_Release,
 246
 247     CompartmentMgr_GetCompartment,
 248     CompartmentMgr_ClearCompartment,
 249     CompartmentMgr_EnumCompartments
 250 };
 251
 252 HRESULT CompartmentMgr_Constructor(IUnknown *pUnkOuter, REFIID riid, IUnknown **ppOut)
 253 {
 254     CompartmentMgr *This;
 255
 256     if (!ppOut)
 257         return E_POINTER;
 258
 259     if (pUnkOuter && !IsEqualIID (riid, &IID_IUnknown))
 260         return CLASS_E_NOAGGREGATION;
 261
 262     This = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(CompartmentMgr));
 263     if (This == NULL)
 264         return E_OUTOFMEMORY;
 265
 266     This->CompartmentMgrVtbl = &CompartmentMgr_CompartmentMgrVtbl;
 267     This->pUnkOuter = pUnkOuter;
 268     list_init(&This->values);
 269
 270     if (pUnkOuter)
 271     {
 272         TRACE("returning %p\n", This);
 273         *ppOut = (IUnknown*)This;
 274         return S_OK;
 275     }
 276     else
 277     {
 278         HRESULT hr;
 279         hr = IUnknown_QueryInterface((IUnknown*)This, riid, (LPVOID*)ppOut);
 280         if (FAILED(hr))
 281             HeapFree(GetProcessHeap(),0,This);
 282         return hr;
 283     }
 284 }
 285
 286 /**************************************************
 287  * IEnumGUID implementaion for ITfCompartmentMgr::EnumCompartments
 288  **************************************************/
 289 static void CompartmentEnumGuid_Destructor(CompartmentEnumGuid *This)
 290 {
 291     TRACE("destroying %p\n", This);
 292     HeapFree(GetProcessHeap(),0,This);
 293 }
 294
 295 static HRESULT WINAPI CompartmentEnumGuid_QueryInterface(IEnumGUID *iface, REFIID iid, LPVOID *ppvOut)
 296 {
 297     CompartmentEnumGuid *This = (CompartmentEnumGuid *)iface;
 298     *ppvOut = NULL;
 299
 300     if (IsEqualIID(iid, &IID_IUnknown) || IsEqualIID(iid, &IID_IEnumGUID))
 301     {
 302         *ppvOut = This;
 303     }
 304
 305     if (*ppvOut)
 306     {
 307         IUnknown_AddRef(iface);
 308         return S_OK;
 309     }
 310
 311     WARN("unsupported interface: %s\n", debugstr_guid(iid));
 312     return E_NOINTERFACE;
 313 }
 314
 315 static ULONG WINAPI CompartmentEnumGuid_AddRef(IEnumGUID *iface)
 316 {
 317     CompartmentEnumGuid *This = (CompartmentEnumGuid*)iface;
 318     return InterlockedIncrement(&This->refCount);
 319 }
 320
 321 static ULONG WINAPI CompartmentEnumGuid_Release(IEnumGUID *iface)
 322 {
 323     CompartmentEnumGuid *This = (CompartmentEnumGuid *)iface;
 324     ULONG ret;
 325
 326     ret = InterlockedDecrement(&This->refCount);
 327     if (ret == 0)
 328         CompartmentEnumGuid_Destructor(This);
 329     return ret;
 330 }
 331
 332 /*****************************************************
 333  * IEnumGuid functions
 334  *****************************************************/
 335 static HRESULT WINAPI CompartmentEnumGuid_Next( LPENUMGUID iface,
 336     ULONG celt, GUID *rgelt, ULONG *pceltFetched)
 337 {
 338     CompartmentEnumGuid *This = (CompartmentEnumGuid *)iface;
 339     ULONG fetched = 0;
 340
 341     TRACE("(%p)\n",This);
 342
 343     if (rgelt == NULL) return E_POINTER;
 344
 345     while (fetched < celt && This->cursor)
 346     {
 347         CompartmentValue* value = LIST_ENTRY(This->cursor,CompartmentValue,entry);
 348         if (!value)
 349             break;
 350
 351         This->cursor = list_next(This->values,This->cursor);
 352         *rgelt = value->guid;
 353
 354         ++fetched;
 355         ++rgelt;
 356     }
 357
 358     if (pceltFetched) *pceltFetched = fetched;
 359     return fetched == celt ? S_OK : S_FALSE;
 360 }
 361
 362 static HRESULT WINAPI CompartmentEnumGuid_Skip( LPENUMGUID iface, ULONG celt)
 363 {
 364     CompartmentEnumGuid *This = (CompartmentEnumGuid *)iface;
 365     TRACE("(%p)\n",This);
 366
 367     This->cursor = list_next(This->values,This->cursor);
 368     return S_OK;
 369 }
 370
 371 static HRESULT WINAPI CompartmentEnumGuid_Reset( LPENUMGUID iface)
 372 {
 373     CompartmentEnumGuid *This = (CompartmentEnumGuid *)iface;
 374     TRACE("(%p)\n",This);
 375     This->cursor = list_head(This->values);
 376     return S_OK;
 377 }
 378
 379 static HRESULT WINAPI CompartmentEnumGuid_Clone( LPENUMGUID iface,
 380     IEnumGUID **ppenum)
 381 {
 382     CompartmentEnumGuid *This = (CompartmentEnumGuid *)iface;
 383     HRESULT res;
 384
 385     TRACE("(%p)\n",This);
 386
 387     if (ppenum == NULL) return E_POINTER;
 388
 389     res = CompartmentEnumGuid_Constructor(This->values, ppenum);
 390     if (SUCCEEDED(res))
 391     {
 392         CompartmentEnumGuid *new_This = (CompartmentEnumGuid *)*ppenum;
 393         new_This->cursor = This->cursor;
 394     }
 395     return res;
 396 }
 397
 398 static const IEnumGUIDVtbl IEnumGUID_Vtbl ={
 399     CompartmentEnumGuid_QueryInterface,
 400     CompartmentEnumGuid_AddRef,
 401     CompartmentEnumGuid_Release,
 402
 403     CompartmentEnumGuid_Next,
 404     CompartmentEnumGuid_Skip,
 405     CompartmentEnumGuid_Reset,
 406     CompartmentEnumGuid_Clone
 407 };
 408
 409 static HRESULT CompartmentEnumGuid_Constructor(struct list *values, IEnumGUID **ppOut)
 410 {
 411     CompartmentEnumGuid *This;
 412
 413     This = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(CompartmentEnumGuid));
 414     if (This == NULL)
 415         return E_OUTOFMEMORY;
 416
 417     This->Vtbl= &IEnumGUID_Vtbl;
 418     This->refCount = 1;
 419
 420     This->values = values;
 421     This->cursor = list_head(values);
 422
 423     TRACE("returning %p\n", This);
 424     *ppOut = (IEnumGUID*)This;
 425     return S_OK;
 426 }
 427
 428 /**************************************************
 429  * ITfCompartment
 430  **************************************************/
 431 static void free_sink(CompartmentSink *sink)
 432 {
 433         IUnknown_Release(sink->interfaces.pIUnknown);
 434         HeapFree(GetProcessHeap(),0,sink);
 435 }
 436
 437 static void Compartment_Destructor(Compartment *This)
 438 {
 439     struct list *cursor, *cursor2;
 440     TRACE("destroying %p\n", This);
 441     VariantClear(&This->variant);
 442     LIST_FOR_EACH_SAFE(cursor, cursor2, &This->CompartmentEventSink)
 443     {
 444         CompartmentSink* sink = LIST_ENTRY(cursor,CompartmentSink,entry);
 445         list_remove(cursor);
 446         free_sink(sink);
 447     }
 448     HeapFree(GetProcessHeap(),0,This);
 449 }
 450
 451 static HRESULT WINAPI Compartment_QueryInterface(ITfCompartment *iface, REFIID iid, LPVOID *ppvOut)
 452 {
 453     Compartment *This = (Compartment *)iface;
 454     *ppvOut = NULL;
 455
 456     if (IsEqualIID(iid, &IID_IUnknown) || IsEqualIID(iid, &IID_ITfCompartment))
 457     {
 458         *ppvOut = This;
 459     }
 460     else if (IsEqualIID(iid, &IID_ITfSource))
 461     {
 462         *ppvOut = &This->SourceVtbl;
 463     }
 464
 465     if (*ppvOut)
 466     {
 467         IUnknown_AddRef(iface);
 468         return S_OK;
 469     }
 470
 471     WARN("unsupported interface: %s\n", debugstr_guid(iid));
 472     return E_NOINTERFACE;
 473 }
 474
 475 static ULONG WINAPI Compartment_AddRef(ITfCompartment *iface)
 476 {
 477     Compartment *This = (Compartment*)iface;
 478     return InterlockedIncrement(&This->refCount);
 479 }
 480
 481 static ULONG WINAPI Compartment_Release(ITfCompartment *iface)
 482 {
 483     Compartment *This = (Compartment *)iface;
 484     ULONG ret;
 485
 486     ret = InterlockedDecrement(&This->refCount);
 487     if (ret == 0)
 488         Compartment_Destructor(This);
 489     return ret;
 490 }
 491
 492 static HRESULT WINAPI Compartment_SetValue(ITfCompartment *iface,
 493     TfClientId tid, const VARIANT *pvarValue)
 494 {
 495     Compartment *This = (Compartment *)iface;
 496     struct list *cursor;
 497
 498     TRACE("(%p) %i %p\n",This,tid,pvarValue);
 499
 500     if (!pvarValue)
 501         return E_INVALIDARG;
 502
 503     if (!(V_VT(pvarValue) == VT_BSTR || V_VT(pvarValue) == VT_I4 ||
 504           V_VT(pvarValue) == VT_UNKNOWN))
 505         return E_INVALIDARG;
 506
 507     if (!This->valueData->owner)
 508         This->valueData->owner = tid;
 509
 510     VariantClear(&This->variant);
 511
 512     /* Shallow copy of value and type */
 513     This->variant = *pvarValue;
 514
 515     if (V_VT(pvarValue) == VT_BSTR)
 516         V_BSTR(&This->variant) = SysAllocStringByteLen((char*)V_BSTR(pvarValue),
 517                 SysStringByteLen(V_BSTR(pvarValue)));
 518     else if (V_VT(pvarValue) == VT_UNKNOWN)
 519         IUnknown_AddRef(V_UNKNOWN(&This->variant));
 520
 521     LIST_FOR_EACH(cursor, &This->CompartmentEventSink)
 522     {
 523         CompartmentSink* sink = LIST_ENTRY(cursor,CompartmentSink,entry);
 524         ITfCompartmentEventSink_OnChange(sink->interfaces.pITfCompartmentEventSink,&This->valueData->guid);
 525     }
 526
 527     return S_OK;
 528 }
 529
 530 static HRESULT WINAPI Compartment_GetValue(ITfCompartment *iface,
 531     VARIANT *pvarValue)
 532 {
 533     Compartment *This = (Compartment *)iface;
 534     TRACE("(%p) %p\n",This, pvarValue);
 535
 536     if (!pvarValue)
 537         return E_INVALIDARG;
 538
 539     VariantInit(pvarValue);
 540     if (V_VT(&This->variant) == VT_EMPTY) return S_FALSE;
 541     return VariantCopy(pvarValue,&This->variant);
 542 }
 543
 544 static const ITfCompartmentVtbl ITfCompartment_Vtbl ={
 545     Compartment_QueryInterface,
 546     Compartment_AddRef,
 547     Compartment_Release,
 548
 549     Compartment_SetValue,
 550     Compartment_GetValue
 551 };
 552
 553 /*****************************************************
 554  * ITfSource functions
 555  *****************************************************/
 556
 557 static HRESULT WINAPI Source_QueryInterface(ITfSource *iface, REFIID iid, LPVOID *ppvOut)
 558 {
 559     Compartment *This = impl_from_ITfSourceVtbl(iface);
 560     return Compartment_QueryInterface((ITfCompartment *)This, iid, *ppvOut);
 561 }
 562
 563 static ULONG WINAPI Source_AddRef(ITfSource *iface)
 564 {
 565     Compartment *This = impl_from_ITfSourceVtbl(iface);
 566     return Compartment_AddRef((ITfCompartment*)This);
 567 }
 568
 569 static ULONG WINAPI Source_Release(ITfSource *iface)
 570 {
 571     Compartment *This = impl_from_ITfSourceVtbl(iface);
 572     return Compartment_Release((ITfCompartment *)This);
 573 }
 574
 575 static HRESULT WINAPI CompartmentSource_AdviseSink(ITfSource *iface,
 576         REFIID riid, IUnknown *punk, DWORD *pdwCookie)
 577 {
 578     CompartmentSink *cs;
 579     Compartment *This = impl_from_ITfSourceVtbl(iface);
 580
 581     TRACE("(%p) %s %p %p\n",This,debugstr_guid(riid),punk,pdwCookie);
 582
 583     if (!riid || !punk || !pdwCookie)
 584         return E_INVALIDARG;
 585
 586     if (IsEqualIID(riid, &IID_ITfCompartmentEventSink))
 587     {
 588         cs = HeapAlloc(GetProcessHeap(),0,sizeof(CompartmentSink));
 589         if (!cs)
 590             return E_OUTOFMEMORY;
 591         if (FAILED(IUnknown_QueryInterface(punk, riid, (LPVOID *)&cs->interfaces.pITfCompartmentEventSink)))
 592         {
 593             HeapFree(GetProcessHeap(),0,cs);
 594             return CONNECT_E_CANNOTCONNECT;
 595         }
 596         list_add_head(&This->CompartmentEventSink,&cs->entry);
 597         *pdwCookie = generate_Cookie(COOKIE_MAGIC_COMPARTMENTSINK , cs);
 598     }
 599     else
 600     {
 601         FIXME("(%p) Unhandled Sink: %s\n",This,debugstr_guid(riid));
 602         return E_NOTIMPL;
 603     }
 604
 605     TRACE("cookie %x\n",*pdwCookie);
 606
 607     return S_OK;
 608 }
 609
 610 static HRESULT WINAPI CompartmentSource_UnadviseSink(ITfSource *iface, DWORD pdwCookie)
 611 {
 612     CompartmentSink *sink;
 613     Compartment *This = impl_from_ITfSourceVtbl(iface);
 614
 615     TRACE("(%p) %x\n",This,pdwCookie);
 616
 617     if (get_Cookie_magic(pdwCookie)!=COOKIE_MAGIC_COMPARTMENTSINK)
 618         return E_INVALIDARG;
 619
 620     sink = (CompartmentSink*)remove_Cookie(pdwCookie);
 621     if (!sink)
 622         return CONNECT_E_NOCONNECTION;
 623
 624     list_remove(&sink->entry);
 625     free_sink(sink);
 626
 627     return S_OK;
 628 }
 629
 630 static const ITfSourceVtbl Compartment_SourceVtbl =
 631 {
 632     Source_QueryInterface,
 633     Source_AddRef,
 634     Source_Release,
 635
 636     CompartmentSource_AdviseSink,
 637     CompartmentSource_UnadviseSink,
 638 };
 639
 640 static HRESULT Compartment_Constructor(CompartmentValue *valueData, ITfCompartment **ppOut)
 641 {
 642     Compartment *This;
 643
 644     This = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(Compartment));
 645     if (This == NULL)
 646         return E_OUTOFMEMORY;
 647
 648     This->Vtbl= &ITfCompartment_Vtbl;
 649     This->SourceVtbl = &Compartment_SourceVtbl;
 650     This->refCount = 1;
 651
 652     This->valueData = valueData;
 653     VariantInit(&This->variant);
 654
 655     list_init(&This->CompartmentEventSink);
 656
 657     TRACE("returning %p\n", This);
 658     *ppOut = (ITfCompartment*)This;
 659     return S_OK;
 660 }