dlls/mshtml/main.c

   1 /*
   2  *    MSHTML Class Factory
   3  *
   4  * Copyright 2002 Lionel Ulmer
   5  * Copyright 2003 Mike McCormack
   6  * Copyright 2005 Jacek Caban
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #include <stdarg.h>
  24 #include <stdio.h>
  25
  26 #define COBJMACROS
  27
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "winuser.h"
  31 #include "winreg.h"
  32 #include "ole2.h"
  33 #include "advpub.h"
  34 #include "shlwapi.h"
  35 #include "optary.h"
  36 #include "rpcproxy.h"
  37 #include "shlguid.h"
  38
  39 #include "wine/unicode.h"
  40 #include "wine/debug.h"
  41
  42 #define INIT_GUID
  43 #include "mshtml_private.h"
  44 #include "resource.h"
  45
  46 WINE_DEFAULT_DEBUG_CHANNEL(mshtml);
  47
  48 HINSTANCE hInst;
  49 DWORD mshtml_tls = TLS_OUT_OF_INDEXES;
  50
  51 static HINSTANCE shdoclc = NULL;
  52 static HDC display_dc;
  53 static LPWSTR status_strings[NUM_STATUS_STRINGS];
  54
  55 static void thread_detach(void)
  56 {
  57     thread_data_t *thread_data;
  58
  59     thread_data = get_thread_data(FALSE);
  60     if(!thread_data)
  61         return;
  62
  63     if(thread_data->thread_hwnd)
  64         DestroyWindow(thread_data->thread_hwnd);
  65
  66     heap_free(thread_data);
  67 }
  68
  69 static void free_strings(void)
  70 {
  71     int i;
  72     for(i = 0; i < NUM_STATUS_STRINGS; i++)
  73         heap_free(status_strings[i]);
  74 }
  75
  76 static void process_detach(void)
  77 {
  78     close_gecko();
  79     release_typelib();
  80
  81     if(shdoclc)
  82         FreeLibrary(shdoclc);
  83     if(mshtml_tls != TLS_OUT_OF_INDEXES)
  84         TlsFree(mshtml_tls);
  85     if(display_dc)
  86         DeleteObject(display_dc);
  87
  88     free_strings();
  89 }
  90
  91 void set_statustext(HTMLDocumentObj* doc, INT id, LPCWSTR arg)
  92 {
  93     int index = id - IDS_STATUS_DONE;
  94     LPWSTR p = status_strings[index];
  95
  96     if(!doc->frame)
  97         return;
  98
  99     if(!p)
 100     {
 101         DWORD len = 255;
 102         p = heap_alloc(len * sizeof(WCHAR));
 103         len = LoadStringW(hInst, id, p, len);
 104         len++;
 105         p = heap_realloc(p, len * sizeof(WCHAR));
 106         if(InterlockedCompareExchangePointer((void**)&status_strings[index], p, NULL))
 107         {
 108             heap_free(p);
 109             p = status_strings[index];
 110         }
 111     }
 112
 113     if(arg)
 114     {
 115         DWORD len = lstrlenW(p) + lstrlenW(arg) - 1;
 116         LPWSTR buf = heap_alloc(len * sizeof(WCHAR));
 117
 118         snprintfW(buf, len, p, arg);
 119
 120         p = buf;
 121     }
 122
 123     IOleInPlaceFrame_SetStatusText(doc->frame, p);
 124
 125     if(arg)
 126         heap_free(p);
 127 }
 128
 129 HINSTANCE get_shdoclc(void)
 130 {
 131     static const WCHAR wszShdoclc[] =
 132         {'s','h','d','o','c','l','c','.','d','l','l',0};
 133
 134     if(shdoclc)
 135         return shdoclc;
 136
 137     return shdoclc = LoadLibraryExW(wszShdoclc, NULL, LOAD_LIBRARY_AS_DATAFILE);
 138 }
 139
 140 HDC get_display_dc(void)
 141 {
 142     static const WCHAR displayW[] = {'D','I','S','P','L','A','Y',0};
 143
 144     if(!display_dc) {
 145         HDC hdc;
 146
 147         hdc = CreateICW(displayW, NULL, NULL, NULL);
 148         if(InterlockedCompareExchangePointer((void**)&display_dc, hdc, NULL))
 149             DeleteObject(hdc);
 150     }
 151
 152     return display_dc;
 153 }
 154
 155 BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpv)
 156 {
 157     switch(fdwReason) {
 158     case DLL_PROCESS_ATTACH:
 159         hInst = hInstDLL;
 160         break;
 161     case DLL_PROCESS_DETACH:
 162         process_detach();
 163         break;
 164     case DLL_THREAD_DETACH:
 165         thread_detach();
 166         break;
 167     }
 168     return TRUE;
 169 }
 170
 171 /***********************************************************
 172  *    ClassFactory implementation
 173  */
 174 typedef HRESULT (*CreateInstanceFunc)(IUnknown*,REFIID,void**);
 175 typedef struct {
 176     IClassFactory IClassFactory_iface;
 177     LONG ref;
 178     CreateInstanceFunc fnCreateInstance;
 179 } ClassFactory;
 180
 181 static inline ClassFactory *impl_from_IClassFactory(IClassFactory *iface)
 182 {
 183     return CONTAINING_RECORD(iface, ClassFactory, IClassFactory_iface);
 184 }
 185
 186 static HRESULT WINAPI ClassFactory_QueryInterface(IClassFactory *iface, REFGUID riid, void **ppvObject)
 187 {
 188     if(IsEqualGUID(&IID_IClassFactory, riid) || IsEqualGUID(&IID_IUnknown, riid)) {
 189         IClassFactory_AddRef(iface);
 190         *ppvObject = iface;
 191         return S_OK;
 192     }
 193
 194     WARN("not supported iid %s\n", debugstr_guid(riid));
 195     *ppvObject = NULL;
 196     return E_NOINTERFACE;
 197 }
 198
 199 static ULONG WINAPI ClassFactory_AddRef(IClassFactory *iface)
 200 {
 201     ClassFactory *This = impl_from_IClassFactory(iface);
 202     ULONG ref = InterlockedIncrement(&This->ref);
 203     TRACE("(%p) ref = %u\n", This, ref);
 204     return ref;
 205 }
 206
 207 static ULONG WINAPI ClassFactory_Release(IClassFactory *iface)
 208 {
 209     ClassFactory *This = impl_from_IClassFactory(iface);
 210     ULONG ref = InterlockedDecrement(&This->ref);
 211
 212     TRACE("(%p) ref = %u\n", This, ref);
 213
 214     if(!ref) {
 215         heap_free(This);
 216     }
 217
 218     return ref;
 219 }
 220
 221 static HRESULT WINAPI ClassFactory_CreateInstance(IClassFactory *iface, IUnknown *pUnkOuter,
 222         REFIID riid, void **ppvObject)
 223 {
 224     ClassFactory *This = impl_from_IClassFactory(iface);
 225     return This->fnCreateInstance(pUnkOuter, riid, ppvObject);
 226 }
 227
 228 static HRESULT WINAPI ClassFactory_LockServer(IClassFactory *iface, BOOL dolock)
 229 {
 230     TRACE("(%p)->(%x)\n", iface, dolock);
 231
 232     /* We never unload the DLL. See DllCanUnloadNow(). */
 233     return S_OK;
 234 }
 235
 236 static const IClassFactoryVtbl HTMLClassFactoryVtbl = {
 237     ClassFactory_QueryInterface,
 238     ClassFactory_AddRef,
 239     ClassFactory_Release,
 240     ClassFactory_CreateInstance,
 241     ClassFactory_LockServer
 242 };
 243
 244 static HRESULT ClassFactory_Create(REFIID riid, void **ppv, CreateInstanceFunc fnCreateInstance)
 245 {
 246     ClassFactory *ret = heap_alloc(sizeof(ClassFactory));
 247     HRESULT hres;
 248
 249     ret->IClassFactory_iface.lpVtbl = &HTMLClassFactoryVtbl;
 250     ret->ref = 0;
 251     ret->fnCreateInstance = fnCreateInstance;
 252
 253     hres = IClassFactory_QueryInterface(&ret->IClassFactory_iface, riid, ppv);
 254     if(FAILED(hres)) {
 255         heap_free(ret);
 256         *ppv = NULL;
 257     }
 258     return hres;
 259 }
 260
 261 /******************************************************************
 262  *              DllGetClassObject (MSHTML.@)
 263  */
 264 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
 265 {
 266     if(IsEqualGUID(&CLSID_HTMLDocument, rclsid)) {
 267         TRACE("(CLSID_HTMLDocument %s %p)\n", debugstr_guid(riid), ppv);
 268         return ClassFactory_Create(riid, ppv, HTMLDocument_Create);
 269     }else if(IsEqualGUID(&CLSID_AboutProtocol, rclsid)) {
 270         TRACE("(CLSID_AboutProtocol %s %p)\n", debugstr_guid(riid), ppv);
 271         return ProtocolFactory_Create(rclsid, riid, ppv);
 272     }else if(IsEqualGUID(&CLSID_JSProtocol, rclsid)) {
 273         TRACE("(CLSID_JSProtocol %s %p)\n", debugstr_guid(riid), ppv);
 274         return ProtocolFactory_Create(rclsid, riid, ppv);
 275     }else if(IsEqualGUID(&CLSID_MailtoProtocol, rclsid)) {
 276         TRACE("(CLSID_MailtoProtocol %s %p)\n", debugstr_guid(riid), ppv);
 277         return ProtocolFactory_Create(rclsid, riid, ppv);
 278     }else if(IsEqualGUID(&CLSID_ResProtocol, rclsid)) {
 279         TRACE("(CLSID_ResProtocol %s %p)\n", debugstr_guid(riid), ppv);
 280         return ProtocolFactory_Create(rclsid, riid, ppv);
 281     }else if(IsEqualGUID(&CLSID_SysimageProtocol, rclsid)) {
 282         TRACE("(CLSID_SysimageProtocol %s %p)\n", debugstr_guid(riid), ppv);
 283         return ProtocolFactory_Create(rclsid, riid, ppv);
 284     }else if(IsEqualGUID(&CLSID_HTMLLoadOptions, rclsid)) {
 285         TRACE("(CLSID_HTMLLoadOptions %s %p)\n", debugstr_guid(riid), ppv);
 286         return ClassFactory_Create(riid, ppv, HTMLLoadOptions_Create);
 287     }
 288
 289     FIXME("Unknown class %s\n", debugstr_guid(rclsid));
 290     return CLASS_E_CLASSNOTAVAILABLE;
 291 }
 292
 293 /******************************************************************
 294  *              DllCanUnloadNow (MSHTML.@)
 295  */
 296 HRESULT WINAPI DllCanUnloadNow(void)
 297 {
 298     TRACE("()\n");
 299     /* The cost of keeping this DLL in memory is small. */
 300     return S_FALSE;
 301 }
 302
 303 /***********************************************************************
 304  *          RunHTMLApplication (MSHTML.@)
 305  *
 306  * Appears to have the same prototype as WinMain.
 307  */
 308 HRESULT WINAPI RunHTMLApplication( HINSTANCE hinst, HINSTANCE hPrevInst,
 309                                LPSTR szCmdLine, INT nCmdShow )
 310 {
 311     FIXME("%p %p %s %d\n", hinst, hPrevInst, debugstr_a(szCmdLine), nCmdShow );
 312     return 0;
 313 }
 314
 315 /***********************************************************************
 316  *          RNIGetCompatibleVersion (MSHTML.@)
 317  */
 318 DWORD WINAPI RNIGetCompatibleVersion(void)
 319 {
 320     TRACE("()\n");
 321     return 0x20000;
 322 }
 323
 324 /***********************************************************************
 325  *          DllInstall (MSHTML.@)
 326  */
 327 HRESULT WINAPI DllInstall(BOOL bInstall, LPCWSTR cmdline)
 328 {
 329     FIXME("stub %d %s: returning S_OK\n", bInstall, debugstr_w(cmdline));
 330     return S_OK;
 331 }
 332
 333 /***********************************************************************
 334  *          ShowHTMLDialog (MSHTML.@)
 335  */
 336 HRESULT WINAPI ShowHTMLDialog(HWND hwndParent, IMoniker *pMk, VARIANT *pvarArgIn,
 337         WCHAR *pchOptions, VARIANT *pvarArgOut)
 338 {
 339     FIXME("(%p %p %p %s %p)\n", hwndParent, pMk, pvarArgIn, debugstr_w(pchOptions), pvarArgOut);
 340     return E_NOTIMPL;
 341 }
 342
 343 /***********************************************************************
 344  *          PrintHTML (MSHTML.@)
 345  */
 346 void WINAPI PrintHTML(HWND hwnd, HINSTANCE handle, LPCSTR cmdline, INT show)
 347 {
 348     FIXME("(%p %p %s %x)\n", hwnd, handle, debugstr_a(cmdline), show);
 349 }
 350
 351 DEFINE_GUID(CLSID_CBackgroundPropertyPage, 0x3050F232, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 352 DEFINE_GUID(CLSID_CCDAnchorPropertyPage, 0x3050F1FC, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 353 DEFINE_GUID(CLSID_CCDGenericPropertyPage, 0x3050F17F, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 354 DEFINE_GUID(CLSID_CDwnBindInfo, 0x3050F3C2, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 355 DEFINE_GUID(CLSID_CHiFiUses, 0x5AAF51B3, 0xB1F0, 0x11D1, 0xB6,0xAB, 0x00,0xA0,0xC9,0x08,0x33,0xE9);
 356 DEFINE_GUID(CLSID_CHtmlComponentConstructor, 0x3050F4F8, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 357 DEFINE_GUID(CLSID_CInlineStylePropertyPage, 0x3050F296, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 358 DEFINE_GUID(CLSID_CPeerHandler, 0x5AAF51B2, 0xB1F0, 0x11D1, 0xB6,0xAB, 0x00,0xA0,0xC9,0x08,0x33,0xE9);
 359 DEFINE_GUID(CLSID_CRecalcEngine, 0x3050F499, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 360 DEFINE_GUID(CLSID_CSvrOMUses, 0x3050F4F0, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 361 DEFINE_GUID(CLSID_CrSource, 0x65014010, 0x9F62, 0x11D1, 0xA6,0x51, 0x00,0x60,0x08,0x11,0xD5,0xCE);
 362 DEFINE_GUID(CLSID_ExternalFrameworkSite, 0x3050F163, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 363 DEFINE_GUID(CLSID_HTADocument, 0x3050F5C8, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 364 DEFINE_GUID(CLSID_HTMLPluginDocument, 0x25336921, 0x03F9, 0x11CF, 0x8F,0xD0, 0x00,0xAA,0x00,0x68,0x6F,0x13);
 365 DEFINE_GUID(CLSID_HTMLPopup, 0x3050F667, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 366 DEFINE_GUID(CLSID_HTMLPopupDoc, 0x3050F67D, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 367 DEFINE_GUID(CLSID_HTMLServerDoc, 0x3050F4E7, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 368 DEFINE_GUID(CLSID_IImageDecodeFilter, 0x607FD4E8, 0x0A03, 0x11D1, 0xAB,0x1D, 0x00,0xC0,0x4F,0xC9,0xB3,0x04);
 369 DEFINE_GUID(CLSID_IImgCtx, 0x3050F3D6, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 370 DEFINE_GUID(CLSID_IntDitherer, 0x05F6FE1A, 0xECEF, 0x11D0, 0xAA,0xE7, 0x00,0xC0,0x4F,0xC9,0xB3,0x04);
 371 DEFINE_GUID(CLSID_MHTMLDocument, 0x3050F3D9, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 372 DEFINE_GUID(CLSID_TridentAPI, 0x429AF92C, 0xA51F, 0x11D2, 0x86,0x1E, 0x00,0xC0,0x4F,0xA3,0x5C,0x89);
 373
 374 #define INF_SET_ID(id)            \
 375     do                            \
 376     {                             \
 377         static CHAR name[] = #id; \
 378                                   \
 379         pse[i].pszName = name;    \
 380         clsids[i++] = &id;        \
 381     } while (0)
 382
 383 #define INF_SET_CLSID(clsid) INF_SET_ID(CLSID_ ## clsid)
 384
 385 static HRESULT register_server(BOOL do_register)
 386 {
 387     HRESULT hres;
 388     HMODULE hAdvpack;
 389     HRESULT (WINAPI *pRegInstall)(HMODULE hm, LPCSTR pszSection, const STRTABLEA* pstTable);
 390     STRTABLEA strtable;
 391     STRENTRYA pse[35];
 392     static CLSID const *clsids[35];
 393     unsigned int i = 0;
 394
 395     static const WCHAR wszAdvpack[] = {'a','d','v','p','a','c','k','.','d','l','l',0};
 396
 397     TRACE("(%x)\n", do_register);
 398
 399     INF_SET_CLSID(AboutProtocol);
 400     INF_SET_CLSID(CAnchorBrowsePropertyPage);
 401     INF_SET_CLSID(CBackgroundPropertyPage);
 402     INF_SET_CLSID(CCDAnchorPropertyPage);
 403     INF_SET_CLSID(CCDGenericPropertyPage);
 404     INF_SET_CLSID(CDocBrowsePropertyPage);
 405     INF_SET_CLSID(CDwnBindInfo);
 406     INF_SET_CLSID(CHiFiUses);
 407     INF_SET_CLSID(CHtmlComponentConstructor);
 408     INF_SET_CLSID(CImageBrowsePropertyPage);
 409     INF_SET_CLSID(CInlineStylePropertyPage);
 410     INF_SET_CLSID(CPeerHandler);
 411     INF_SET_CLSID(CRecalcEngine);
 412     INF_SET_CLSID(CSvrOMUses);
 413     INF_SET_CLSID(CrSource);
 414     INF_SET_CLSID(ExternalFrameworkSite);
 415     INF_SET_CLSID(HTADocument);
 416     INF_SET_CLSID(HTMLDocument);
 417     INF_SET_CLSID(HTMLLoadOptions);
 418     INF_SET_CLSID(HTMLPluginDocument);
 419     INF_SET_CLSID(HTMLPopup);
 420     INF_SET_CLSID(HTMLPopupDoc);
 421     INF_SET_CLSID(HTMLServerDoc);
 422     INF_SET_CLSID(HTMLWindowProxy);
 423     INF_SET_CLSID(IImageDecodeFilter);
 424     INF_SET_CLSID(IImgCtx);
 425     INF_SET_CLSID(IntDitherer);
 426     INF_SET_CLSID(JSProtocol);
 427     INF_SET_CLSID(MHTMLDocument);
 428     INF_SET_CLSID(MailtoProtocol);
 429     INF_SET_CLSID(ResProtocol);
 430     INF_SET_CLSID(Scriptlet);
 431     INF_SET_CLSID(SysimageProtocol);
 432     INF_SET_CLSID(TridentAPI);
 433     INF_SET_ID(LIBID_MSHTML);
 434
 435     for(i=0; i < sizeof(pse)/sizeof(pse[0]); i++) {
 436         pse[i].pszValue = heap_alloc(39);
 437         sprintf(pse[i].pszValue, "{%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X}",
 438                 clsids[i]->Data1, clsids[i]->Data2, clsids[i]->Data3, clsids[i]->Data4[0],
 439                 clsids[i]->Data4[1], clsids[i]->Data4[2], clsids[i]->Data4[3], clsids[i]->Data4[4],
 440                 clsids[i]->Data4[5], clsids[i]->Data4[6], clsids[i]->Data4[7]);
 441     }
 442
 443     strtable.cEntries = sizeof(pse)/sizeof(pse[0]);
 444     strtable.pse = pse;
 445
 446     hAdvpack = LoadLibraryW(wszAdvpack);
 447     pRegInstall = (void *)GetProcAddress(hAdvpack, "RegInstall");
 448
 449     hres = pRegInstall(hInst, do_register ? "RegisterDll" : "UnregisterDll", &strtable);
 450
 451     for(i=0; i < sizeof(pse)/sizeof(pse[0]); i++)
 452         heap_free(pse[i].pszValue);
 453
 454     if(FAILED(hres)) {
 455         ERR("RegInstall failed: %08x\n", hres);
 456         return hres;
 457     }
 458
 459     if(do_register) {
 460         ITypeLib *typelib;
 461
 462         static const WCHAR wszMSHTML[] = {'m','s','h','t','m','l','.','t','l','b',0};
 463
 464         hres = LoadTypeLibEx(wszMSHTML, REGKIND_REGISTER, &typelib);
 465         if(SUCCEEDED(hres))
 466             ITypeLib_Release(typelib);
 467     }else {
 468         hres = UnRegisterTypeLib(&LIBID_MSHTML, 4, 0, LOCALE_SYSTEM_DEFAULT, SYS_WIN32);
 469     }
 470
 471     if(FAILED(hres))
 472         ERR("typelib registration failed: %08x\n", hres);
 473
 474     return hres;
 475 }
 476
 477 #undef INF_SET_CLSID
 478 #undef INF_SET_ID
 479
 480 /***********************************************************************
 481  *          DllRegisterServer (MSHTML.@)
 482  */
 483 HRESULT WINAPI DllRegisterServer(void)
 484 {
 485     HRESULT hres;
 486
 487     hres = __wine_register_resources( hInst, NULL );
 488     if(SUCCEEDED(hres))
 489         hres = register_server(TRUE);
 490     if(SUCCEEDED(hres))
 491         load_gecko(FALSE);
 492
 493     return hres;
 494 }
 495
 496 /***********************************************************************
 497  *          DllUnregisterServer (MSHTML.@)
 498  */
 499 HRESULT WINAPI DllUnregisterServer(void)
 500 {
 501     HRESULT hres = __wine_unregister_resources( hInst, NULL );
 502     if(SUCCEEDED(hres)) hres = register_server(FALSE);
 503     return hres;
 504 }
 505
 506 const char *debugstr_variant(const VARIANT *v)
 507 {
 508     if(!v)
 509         return "(null)";
 510
 511     switch(V_VT(v)) {
 512     case VT_EMPTY:
 513         return "{VT_EMPTY}";
 514     case VT_NULL:
 515         return "{VT_NULL}";
 516     case VT_I4:
 517         return wine_dbg_sprintf("{VT_I4: %d}", V_I4(v));
 518     case VT_R8:
 519         return wine_dbg_sprintf("{VT_R8: %lf}", V_R8(v));
 520     case VT_BSTR:
 521         return wine_dbg_sprintf("{VT_BSTR: %s}", debugstr_w(V_BSTR(v)));
 522     case VT_DISPATCH:
 523         return wine_dbg_sprintf("{VT_DISPATCH: %p}", V_DISPATCH(v));
 524     case VT_BOOL:
 525         return wine_dbg_sprintf("{VT_BOOL: %x}", V_BOOL(v));
 526     case VT_UINT:
 527         return wine_dbg_sprintf("{VT_UINT: %u}", V_UINT(v));
 528     default:
 529         return wine_dbg_sprintf("{vt %d}", V_VT(v));
 530     }
 531 }