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/debug.h"
  40
  41 #define INIT_GUID
  42 #include "mshtml_private.h"
  43 #include "resource.h"
  44
  45 WINE_DEFAULT_DEBUG_CHANNEL(mshtml);
  46
  47 HINSTANCE hInst;
  48 DWORD mshtml_tls = TLS_OUT_OF_INDEXES;
  49
  50 static HINSTANCE shdoclc = NULL;
  51 static HDC display_dc;
  52 static WCHAR *status_strings[IDS_STATUS_LAST-IDS_STATUS_FIRST+1];
  53
  54 static void thread_detach(void)
  55 {
  56     thread_data_t *thread_data;
  57
  58     thread_data = get_thread_data(FALSE);
  59     if(!thread_data)
  60         return;
  61
  62     if(thread_data->thread_hwnd)
  63         DestroyWindow(thread_data->thread_hwnd);
  64
  65     heap_free(thread_data);
  66 }
  67
  68 static void free_strings(void)
  69 {
  70     unsigned int i;
  71     for(i = 0; i < sizeof(status_strings)/sizeof(*status_strings); i++)
  72         heap_free(status_strings[i]);
  73 }
  74
  75 static void process_detach(void)
  76 {
  77     close_gecko();
  78     release_typelib();
  79
  80     if(shdoclc)
  81         FreeLibrary(shdoclc);
  82     if(mshtml_tls != TLS_OUT_OF_INDEXES)
  83         TlsFree(mshtml_tls);
  84     if(display_dc)
  85         DeleteObject(display_dc);
  86
  87     free_strings();
  88 }
  89
  90 void set_statustext(HTMLDocumentObj* doc, INT id, LPCWSTR arg)
  91 {
  92     int index = id - IDS_STATUS_FIRST;
  93     WCHAR *p = status_strings[index];
  94     DWORD len;
  95
  96     if(!doc->frame)
  97         return;
  98
  99     if(!p) {
 100         len = 255;
 101         p = heap_alloc(len * sizeof(WCHAR));
 102         len = LoadStringW(hInst, id, p, len) + 1;
 103         p = heap_realloc(p, len * sizeof(WCHAR));
 104         if(InterlockedCompareExchangePointer((void**)&status_strings[index], p, NULL)) {
 105             heap_free(p);
 106             p = status_strings[index];
 107         }
 108     }
 109
 110     if(arg) {
 111         WCHAR *buf;
 112
 113         len = lstrlenW(p) + lstrlenW(arg) - 1;
 114         buf = heap_alloc(len * sizeof(WCHAR));
 115
 116         snprintfW(buf, len, p, arg);
 117
 118         p = buf;
 119     }
 120
 121     IOleInPlaceFrame_SetStatusText(doc->frame, p);
 122
 123     if(arg)
 124         heap_free(p);
 125 }
 126
 127 HRESULT do_query_service(IUnknown *unk, REFGUID guid_service, REFIID riid, void **ppv)
 128 {
 129     IServiceProvider *sp;
 130     HRESULT hres;
 131
 132     hres = IUnknown_QueryInterface(unk, &IID_IServiceProvider, (void**)&sp);
 133     if(FAILED(hres))
 134         return hres;
 135
 136     hres = IServiceProvider_QueryService(sp, guid_service, riid, ppv);
 137     IServiceProvider_Release(sp);
 138     return hres;
 139 }
 140
 141 HINSTANCE get_shdoclc(void)
 142 {
 143     static const WCHAR wszShdoclc[] =
 144         {'s','h','d','o','c','l','c','.','d','l','l',0};
 145
 146     if(shdoclc)
 147         return shdoclc;
 148
 149     return shdoclc = LoadLibraryExW(wszShdoclc, NULL, LOAD_LIBRARY_AS_DATAFILE);
 150 }
 151
 152 HDC get_display_dc(void)
 153 {
 154     static const WCHAR displayW[] = {'D','I','S','P','L','A','Y',0};
 155
 156     if(!display_dc) {
 157         HDC hdc;
 158
 159         hdc = CreateICW(displayW, NULL, NULL, NULL);
 160         if(InterlockedCompareExchangePointer((void**)&display_dc, hdc, NULL))
 161             DeleteObject(hdc);
 162     }
 163
 164     return display_dc;
 165 }
 166
 167 BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID reserved)
 168 {
 169     switch(fdwReason) {
 170     case DLL_PROCESS_ATTACH:
 171         hInst = hInstDLL;
 172         break;
 173     case DLL_PROCESS_DETACH:
 174         if (reserved) break;
 175         process_detach();
 176         break;
 177     case DLL_THREAD_DETACH:
 178         thread_detach();
 179         break;
 180     }
 181     return TRUE;
 182 }
 183
 184 /***********************************************************
 185  *    ClassFactory implementation
 186  */
 187 typedef HRESULT (*CreateInstanceFunc)(IUnknown*,REFIID,void**);
 188 typedef struct {
 189     IClassFactory IClassFactory_iface;
 190     LONG ref;
 191     CreateInstanceFunc fnCreateInstance;
 192 } ClassFactory;
 193
 194 static inline ClassFactory *impl_from_IClassFactory(IClassFactory *iface)
 195 {
 196     return CONTAINING_RECORD(iface, ClassFactory, IClassFactory_iface);
 197 }
 198
 199 static HRESULT WINAPI ClassFactory_QueryInterface(IClassFactory *iface, REFGUID riid, void **ppvObject)
 200 {
 201     if(IsEqualGUID(&IID_IClassFactory, riid) || IsEqualGUID(&IID_IUnknown, riid)) {
 202         IClassFactory_AddRef(iface);
 203         *ppvObject = iface;
 204         return S_OK;
 205     }
 206
 207     WARN("not supported iid %s\n", debugstr_mshtml_guid(riid));
 208     *ppvObject = NULL;
 209     return E_NOINTERFACE;
 210 }
 211
 212 static ULONG WINAPI ClassFactory_AddRef(IClassFactory *iface)
 213 {
 214     ClassFactory *This = impl_from_IClassFactory(iface);
 215     ULONG ref = InterlockedIncrement(&This->ref);
 216     TRACE("(%p) ref = %u\n", This, ref);
 217     return ref;
 218 }
 219
 220 static ULONG WINAPI ClassFactory_Release(IClassFactory *iface)
 221 {
 222     ClassFactory *This = impl_from_IClassFactory(iface);
 223     ULONG ref = InterlockedDecrement(&This->ref);
 224
 225     TRACE("(%p) ref = %u\n", This, ref);
 226
 227     if(!ref) {
 228         heap_free(This);
 229     }
 230
 231     return ref;
 232 }
 233
 234 static HRESULT WINAPI ClassFactory_CreateInstance(IClassFactory *iface, IUnknown *pUnkOuter,
 235         REFIID riid, void **ppvObject)
 236 {
 237     ClassFactory *This = impl_from_IClassFactory(iface);
 238     return This->fnCreateInstance(pUnkOuter, riid, ppvObject);
 239 }
 240
 241 static HRESULT WINAPI ClassFactory_LockServer(IClassFactory *iface, BOOL dolock)
 242 {
 243     TRACE("(%p)->(%x)\n", iface, dolock);
 244
 245     /* We never unload the DLL. See DllCanUnloadNow(). */
 246     return S_OK;
 247 }
 248
 249 static const IClassFactoryVtbl HTMLClassFactoryVtbl = {
 250     ClassFactory_QueryInterface,
 251     ClassFactory_AddRef,
 252     ClassFactory_Release,
 253     ClassFactory_CreateInstance,
 254     ClassFactory_LockServer
 255 };
 256
 257 static HRESULT ClassFactory_Create(REFIID riid, void **ppv, CreateInstanceFunc fnCreateInstance)
 258 {
 259     ClassFactory *ret = heap_alloc(sizeof(ClassFactory));
 260     HRESULT hres;
 261
 262     ret->IClassFactory_iface.lpVtbl = &HTMLClassFactoryVtbl;
 263     ret->ref = 0;
 264     ret->fnCreateInstance = fnCreateInstance;
 265
 266     hres = IClassFactory_QueryInterface(&ret->IClassFactory_iface, riid, ppv);
 267     if(FAILED(hres)) {
 268         heap_free(ret);
 269         *ppv = NULL;
 270     }
 271     return hres;
 272 }
 273
 274 /******************************************************************
 275  *              DllGetClassObject (MSHTML.@)
 276  */
 277 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
 278 {
 279     if(IsEqualGUID(&CLSID_HTMLDocument, rclsid)) {
 280         TRACE("(CLSID_HTMLDocument %s %p)\n", debugstr_mshtml_guid(riid), ppv);
 281         return ClassFactory_Create(riid, ppv, HTMLDocument_Create);
 282     }else if(IsEqualGUID(&CLSID_AboutProtocol, rclsid)) {
 283         TRACE("(CLSID_AboutProtocol %s %p)\n", debugstr_mshtml_guid(riid), ppv);
 284         return ProtocolFactory_Create(rclsid, riid, ppv);
 285     }else if(IsEqualGUID(&CLSID_JSProtocol, rclsid)) {
 286         TRACE("(CLSID_JSProtocol %s %p)\n", debugstr_mshtml_guid(riid), ppv);
 287         return ProtocolFactory_Create(rclsid, riid, ppv);
 288     }else if(IsEqualGUID(&CLSID_MailtoProtocol, rclsid)) {
 289         TRACE("(CLSID_MailtoProtocol %s %p)\n", debugstr_mshtml_guid(riid), ppv);
 290         return ProtocolFactory_Create(rclsid, riid, ppv);
 291     }else if(IsEqualGUID(&CLSID_ResProtocol, rclsid)) {
 292         TRACE("(CLSID_ResProtocol %s %p)\n", debugstr_mshtml_guid(riid), ppv);
 293         return ProtocolFactory_Create(rclsid, riid, ppv);
 294     }else if(IsEqualGUID(&CLSID_SysimageProtocol, rclsid)) {
 295         TRACE("(CLSID_SysimageProtocol %s %p)\n", debugstr_mshtml_guid(riid), ppv);
 296         return ProtocolFactory_Create(rclsid, riid, ppv);
 297     }else if(IsEqualGUID(&CLSID_HTMLLoadOptions, rclsid)) {
 298         TRACE("(CLSID_HTMLLoadOptions %s %p)\n", debugstr_mshtml_guid(riid), ppv);
 299         return ClassFactory_Create(riid, ppv, HTMLLoadOptions_Create);
 300     }
 301
 302     FIXME("Unknown class %s\n", debugstr_guid(rclsid));
 303     return CLASS_E_CLASSNOTAVAILABLE;
 304 }
 305
 306 /******************************************************************
 307  *              DllCanUnloadNow (MSHTML.@)
 308  */
 309 HRESULT WINAPI DllCanUnloadNow(void)
 310 {
 311     TRACE("()\n");
 312     /* The cost of keeping this DLL in memory is small. */
 313     return S_FALSE;
 314 }
 315
 316 /***********************************************************************
 317  *          RunHTMLApplication (MSHTML.@)
 318  *
 319  * Appears to have the same prototype as WinMain.
 320  */
 321 HRESULT WINAPI RunHTMLApplication( HINSTANCE hinst, HINSTANCE hPrevInst,
 322                                LPSTR szCmdLine, INT nCmdShow )
 323 {
 324     FIXME("%p %p %s %d\n", hinst, hPrevInst, debugstr_a(szCmdLine), nCmdShow );
 325     return 0;
 326 }
 327
 328 /***********************************************************************
 329  *          RNIGetCompatibleVersion (MSHTML.@)
 330  */
 331 DWORD WINAPI RNIGetCompatibleVersion(void)
 332 {
 333     TRACE("()\n");
 334     return 0x20000;
 335 }
 336
 337 /***********************************************************************
 338  *          DllInstall (MSHTML.@)
 339  */
 340 HRESULT WINAPI DllInstall(BOOL bInstall, LPCWSTR cmdline)
 341 {
 342     FIXME("stub %d %s: returning S_OK\n", bInstall, debugstr_w(cmdline));
 343     return S_OK;
 344 }
 345
 346 /***********************************************************************
 347  *          ShowHTMLDialog (MSHTML.@)
 348  */
 349 HRESULT WINAPI ShowHTMLDialog(HWND hwndParent, IMoniker *pMk, VARIANT *pvarArgIn,
 350         WCHAR *pchOptions, VARIANT *pvarArgOut)
 351 {
 352     FIXME("(%p %p %p %s %p)\n", hwndParent, pMk, pvarArgIn, debugstr_w(pchOptions), pvarArgOut);
 353     return E_NOTIMPL;
 354 }
 355
 356 /***********************************************************************
 357  *          PrintHTML (MSHTML.@)
 358  */
 359 void WINAPI PrintHTML(HWND hwnd, HINSTANCE handle, LPCSTR cmdline, INT show)
 360 {
 361     FIXME("(%p %p %s %x)\n", hwnd, handle, debugstr_a(cmdline), show);
 362 }
 363
 364 DEFINE_GUID(CLSID_CBackgroundPropertyPage, 0x3050F232, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 365 DEFINE_GUID(CLSID_CCDAnchorPropertyPage, 0x3050F1FC, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 366 DEFINE_GUID(CLSID_CCDGenericPropertyPage, 0x3050F17F, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 367 DEFINE_GUID(CLSID_CDwnBindInfo, 0x3050F3C2, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 368 DEFINE_GUID(CLSID_CHiFiUses, 0x5AAF51B3, 0xB1F0, 0x11D1, 0xB6,0xAB, 0x00,0xA0,0xC9,0x08,0x33,0xE9);
 369 DEFINE_GUID(CLSID_CHtmlComponentConstructor, 0x3050F4F8, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 370 DEFINE_GUID(CLSID_CInlineStylePropertyPage, 0x3050F296, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 371 DEFINE_GUID(CLSID_CPeerHandler, 0x5AAF51B2, 0xB1F0, 0x11D1, 0xB6,0xAB, 0x00,0xA0,0xC9,0x08,0x33,0xE9);
 372 DEFINE_GUID(CLSID_CRecalcEngine, 0x3050F499, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 373 DEFINE_GUID(CLSID_CSvrOMUses, 0x3050F4F0, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 374 DEFINE_GUID(CLSID_CrSource, 0x65014010, 0x9F62, 0x11D1, 0xA6,0x51, 0x00,0x60,0x08,0x11,0xD5,0xCE);
 375 DEFINE_GUID(CLSID_ExternalFrameworkSite, 0x3050F163, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 376 DEFINE_GUID(CLSID_HTADocument, 0x3050F5C8, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 377 DEFINE_GUID(CLSID_HTMLPluginDocument, 0x25336921, 0x03F9, 0x11CF, 0x8F,0xD0, 0x00,0xAA,0x00,0x68,0x6F,0x13);
 378 DEFINE_GUID(CLSID_HTMLPopup, 0x3050F667, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 379 DEFINE_GUID(CLSID_HTMLPopupDoc, 0x3050F67D, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 380 DEFINE_GUID(CLSID_HTMLServerDoc, 0x3050F4E7, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 381 DEFINE_GUID(CLSID_IImageDecodeFilter, 0x607FD4E8, 0x0A03, 0x11D1, 0xAB,0x1D, 0x00,0xC0,0x4F,0xC9,0xB3,0x04);
 382 DEFINE_GUID(CLSID_IImgCtx, 0x3050F3D6, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 383 DEFINE_GUID(CLSID_IntDitherer, 0x05F6FE1A, 0xECEF, 0x11D0, 0xAA,0xE7, 0x00,0xC0,0x4F,0xC9,0xB3,0x04);
 384 DEFINE_GUID(CLSID_MHTMLDocument, 0x3050F3D9, 0x98B5, 0x11CF, 0xBB,0x82, 0x00,0xAA,0x00,0xBD,0xCE,0x0B);
 385 DEFINE_GUID(CLSID_TridentAPI, 0x429AF92C, 0xA51F, 0x11D2, 0x86,0x1E, 0x00,0xC0,0x4F,0xA3,0x5C,0x89);
 386
 387 #define INF_SET_ID(id)            \
 388     do                            \
 389     {                             \
 390         static CHAR name[] = #id; \
 391                                   \
 392         pse[i].pszName = name;    \
 393         clsids[i++] = &id;        \
 394     } while (0)
 395
 396 #define INF_SET_CLSID(clsid) INF_SET_ID(CLSID_ ## clsid)
 397
 398 static HRESULT register_server(BOOL do_register)
 399 {
 400     HRESULT hres;
 401     HMODULE hAdvpack;
 402     HRESULT (WINAPI *pRegInstall)(HMODULE hm, LPCSTR pszSection, const STRTABLEA* pstTable);
 403     STRTABLEA strtable;
 404     STRENTRYA pse[35];
 405     static CLSID const *clsids[35];
 406     unsigned int i = 0;
 407
 408     static const WCHAR wszAdvpack[] = {'a','d','v','p','a','c','k','.','d','l','l',0};
 409
 410     TRACE("(%x)\n", do_register);
 411
 412     INF_SET_CLSID(AboutProtocol);
 413     INF_SET_CLSID(CAnchorBrowsePropertyPage);
 414     INF_SET_CLSID(CBackgroundPropertyPage);
 415     INF_SET_CLSID(CCDAnchorPropertyPage);
 416     INF_SET_CLSID(CCDGenericPropertyPage);
 417     INF_SET_CLSID(CDocBrowsePropertyPage);
 418     INF_SET_CLSID(CDwnBindInfo);
 419     INF_SET_CLSID(CHiFiUses);
 420     INF_SET_CLSID(CHtmlComponentConstructor);
 421     INF_SET_CLSID(CImageBrowsePropertyPage);
 422     INF_SET_CLSID(CInlineStylePropertyPage);
 423     INF_SET_CLSID(CPeerHandler);
 424     INF_SET_CLSID(CRecalcEngine);
 425     INF_SET_CLSID(CSvrOMUses);
 426     INF_SET_CLSID(CrSource);
 427     INF_SET_CLSID(ExternalFrameworkSite);
 428     INF_SET_CLSID(HTADocument);
 429     INF_SET_CLSID(HTMLDocument);
 430     INF_SET_CLSID(HTMLLoadOptions);
 431     INF_SET_CLSID(HTMLPluginDocument);
 432     INF_SET_CLSID(HTMLPopup);
 433     INF_SET_CLSID(HTMLPopupDoc);
 434     INF_SET_CLSID(HTMLServerDoc);
 435     INF_SET_CLSID(HTMLWindowProxy);
 436     INF_SET_CLSID(IImageDecodeFilter);
 437     INF_SET_CLSID(IImgCtx);
 438     INF_SET_CLSID(IntDitherer);
 439     INF_SET_CLSID(JSProtocol);
 440     INF_SET_CLSID(MHTMLDocument);
 441     INF_SET_CLSID(MailtoProtocol);
 442     INF_SET_CLSID(ResProtocol);
 443     INF_SET_CLSID(Scriptlet);
 444     INF_SET_CLSID(SysimageProtocol);
 445     INF_SET_CLSID(TridentAPI);
 446     INF_SET_ID(LIBID_MSHTML);
 447
 448     for(i=0; i < sizeof(pse)/sizeof(pse[0]); i++) {
 449         pse[i].pszValue = heap_alloc(39);
 450         sprintf(pse[i].pszValue, "{%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X}",
 451                 clsids[i]->Data1, clsids[i]->Data2, clsids[i]->Data3, clsids[i]->Data4[0],
 452                 clsids[i]->Data4[1], clsids[i]->Data4[2], clsids[i]->Data4[3], clsids[i]->Data4[4],
 453                 clsids[i]->Data4[5], clsids[i]->Data4[6], clsids[i]->Data4[7]);
 454     }
 455
 456     strtable.cEntries = sizeof(pse)/sizeof(pse[0]);
 457     strtable.pse = pse;
 458
 459     hAdvpack = LoadLibraryW(wszAdvpack);
 460     pRegInstall = (void *)GetProcAddress(hAdvpack, "RegInstall");
 461
 462     hres = pRegInstall(hInst, do_register ? "RegisterDll" : "UnregisterDll", &strtable);
 463
 464     FreeLibrary(hAdvpack);
 465
 466     for(i=0; i < sizeof(pse)/sizeof(pse[0]); i++)
 467         heap_free(pse[i].pszValue);
 468
 469     if(FAILED(hres))
 470         ERR("RegInstall failed: %08x\n", hres);
 471
 472     return hres;
 473 }
 474
 475 #undef INF_SET_CLSID
 476 #undef INF_SET_ID
 477
 478 /***********************************************************************
 479  *          DllRegisterServer (MSHTML.@)
 480  */
 481 HRESULT WINAPI DllRegisterServer(void)
 482 {
 483     HRESULT hres;
 484
 485     hres = __wine_register_resources( hInst );
 486     if(SUCCEEDED(hres))
 487         hres = register_server(TRUE);
 488     if(SUCCEEDED(hres))
 489         load_gecko();
 490
 491     return hres;
 492 }
 493
 494 /***********************************************************************
 495  *          DllUnregisterServer (MSHTML.@)
 496  */
 497 HRESULT WINAPI DllUnregisterServer(void)
 498 {
 499     HRESULT hres = __wine_unregister_resources( hInst );
 500     if(SUCCEEDED(hres)) hres = register_server(FALSE);
 501     return hres;
 502 }
 503
 504 const char *debugstr_variant(const VARIANT *v)
 505 {
 506     if(!v)
 507         return "(null)";
 508
 509     switch(V_VT(v)) {
 510     case VT_EMPTY:
 511         return "{VT_EMPTY}";
 512     case VT_NULL:
 513         return "{VT_NULL}";
 514     case VT_I2:
 515         return wine_dbg_sprintf("{VT_I2: %d}", V_I2(v));
 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_ERROR:
 525         return wine_dbg_sprintf("{VT_ERROR: %08x}", V_ERROR(v));
 526     case VT_BOOL:
 527         return wine_dbg_sprintf("{VT_BOOL: %x}", V_BOOL(v));
 528     case VT_UINT:
 529         return wine_dbg_sprintf("{VT_UINT: %u}", V_UINT(v));
 530     default:
 531         return wine_dbg_sprintf("{vt %d}", V_VT(v));
 532     }
 533 }
 534
 535 const char *debugstr_mshtml_guid(const GUID *iid)
 536 {
 537 #define X(x) if(IsEqualGUID(iid, &x)) return #x
 538     X(DIID_DispHTMLDocument);
 539     X(DIID_HTMLDocumentEvents);
 540     X(DIID_HTMLDocumentEvents2);
 541     X(DIID_HTMLTableEvents);
 542     X(DIID_HTMLTextContainerEvents);
 543     X(IID_IConnectionPoint);
 544     X(IID_IConnectionPointContainer);
 545     X(IID_ICustomDoc);
 546     X(IID_IDispatch);
 547     X(IID_IDispatchEx);
 548     X(IID_IEnumConnections);
 549     X(IID_IEnumVARIANT);
 550     X(IID_IHlinkTarget);
 551     X(IID_IHTMLAttributeCollection);
 552     X(IID_IHTMLAttributeCollection2);
 553     X(IID_IHTMLAttributeCollection3);
 554     X(IID_IHTMLCurrentStyle);
 555     X(IID_IHTMLCurrentStyle2);
 556     X(IID_IHTMLCurrentStyle3);
 557     X(IID_IHTMLCurrentStyle4);
 558     X(IID_IHTMLDocument);
 559     X(IID_IHTMLDocument2);
 560     X(IID_IHTMLDocument3);
 561     X(IID_IHTMLDocument4);
 562     X(IID_IHTMLDocument5);
 563     X(IID_IHTMLDocument6);
 564     X(IID_IHTMLDocument7);
 565     X(IID_IHTMLDOMAttribute);
 566     X(IID_IHTMLDOMChildrenCollection);
 567     X(IID_IHTMLDOMNode);
 568     X(IID_IHTMLDOMNode2);
 569     X(IID_IHTMLElement);
 570     X(IID_IHTMLElement2);
 571     X(IID_IHTMLElement3);
 572     X(IID_IHTMLElement4);
 573     X(IID_IHTMLElementCollection);
 574     X(IID_IHTMLEventObj);
 575     X(IID_IHTMLFiltersCollection);
 576     X(IID_IHTMLImageElementFactory);
 577     X(IID_IHTMLLocation);
 578     X(IID_IHTMLOptionElementFactory);
 579     X(IID_IHTMLRect);
 580     X(IID_IHTMLScreen);
 581     X(IID_IHTMLStorage);
 582     X(IID_IHTMLStyle);
 583     X(IID_IHTMLStyle2);
 584     X(IID_IHTMLStyle3);
 585     X(IID_IHTMLStyle4);
 586     X(IID_IHTMLStyle5);
 587     X(IID_IHTMLStyle6);
 588     X(IID_IHtmlLoadOptions);
 589     X(IID_IInternetHostSecurityManager);
 590     X(IID_IMonikerProp);
 591     X(IID_IObjectSafety);
 592     X(IID_IObjectWithSite);
 593     X(IID_IOleContainer);
 594     X(IID_IOleCommandTarget);
 595     X(IID_IOleControl);
 596     X(IID_IOleDocument);
 597     X(IID_IOleDocumentView);
 598     X(IID_IOleInPlaceActiveObject);
 599     X(IID_IOleInPlaceFrame);
 600     X(IID_IOleInPlaceObject);
 601     X(IID_IOleInPlaceObjectWindowless);
 602     X(IID_IOleInPlaceUIWindow);
 603     X(IID_IOleObject);
 604     X(IID_IOleWindow);
 605     X(IID_IOptionArray);
 606     X(IID_IPersist);
 607     X(IID_IPersistFile);
 608     X(IID_IPersistHistory);
 609     X(IID_IPersistMoniker);
 610     X(IID_IPersistStreamInit);
 611     X(IID_IPropertyNotifySink);
 612     X(IID_IProvideClassInfo);
 613     X(IID_IServiceProvider);
 614     X(IID_ISupportErrorInfo);
 615     X(IID_ITargetContainer);
 616     X(IID_IUnknown);
 617     X(IID_IViewObject);
 618     X(IID_IViewObject2);
 619     X(IID_IViewObjectEx);
 620     X(IID_nsCycleCollectionISupports);
 621     X(IID_nsXPCOMCycleCollectionParticipant);
 622 #undef X
 623
 624     return debugstr_guid(iid);
 625 }