dll/win32/shell32/wine/shellole.c

   1 /*
   2  *      handling of SHELL32.DLL OLE-Objects
   3  *
   4  *      Copyright 1997  Marcus Meissner
   5  *      Copyright 1998  Juergen Schmied  <juergen.schmied@metronet.de>
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include <wine/config.h>
  23
  24 #include <stdarg.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27
  28 #define WIN32_NO_STATUS
  29 #define _INC_WINDOWS
  30 #define COBJMACROS
  31 #define NONAMELESSUNION
  32
  33 #include <windef.h>
  34 #include <winbase.h>
  35 #include <shellapi.h>
  36 #include <shlobj.h>
  37 #include <shlwapi.h>
  38 #include <debughlp.h>
  39 #include <shell32_main.h>
  40
  41 #include <wine/debug.h>
  42 #include <wine/unicode.h>
  43
  44 WINE_DEFAULT_DEBUG_CHANNEL(shell);
  45
  46 extern INT WINAPI SHStringFromGUIDW(REFGUID guid, LPWSTR lpszDest, INT cchMax);  /* shlwapi.24 */
  47
  48 /**************************************************************************
  49  * Default ClassFactory types
  50  */
  51 typedef HRESULT (CALLBACK *LPFNCREATEINSTANCE)(IUnknown* pUnkOuter, REFIID riid, LPVOID* ppvObject);
  52
  53 #ifndef __REACTOS__
  54
  55 static IClassFactory * IDefClF_fnConstructor(LPFNCREATEINSTANCE lpfnCI, PLONG pcRefDll, REFIID riidInst);
  56
  57 /* this table contains all CLSIDs of shell32 objects */
  58 static const struct {
  59         REFIID                  riid;
  60         LPFNCREATEINSTANCE      lpfnCI;
  61 } InterfaceTable[] = {
  62
  63         {&CLSID_ApplicationAssociationRegistration, ApplicationAssociationRegistration_Constructor},
  64         {&CLSID_AutoComplete,   IAutoComplete_Constructor},
  65         {&CLSID_ControlPanel,   IControlPanel_Constructor},
  66         {&CLSID_DragDropHelper, IDropTargetHelper_Constructor},
  67         {&CLSID_FolderShortcut, FolderShortcut_Constructor},
  68         {&CLSID_MyComputer,     ISF_MyComputer_Constructor},
  69         {&CLSID_MyDocuments,    MyDocuments_Constructor},
  70         {&CLSID_NetworkPlaces,  ISF_NetworkPlaces_Constructor},
  71         {&CLSID_Printers,       Printers_Constructor},
  72         {&CLSID_QueryAssociations, QueryAssociations_Constructor},
  73         {&CLSID_RecycleBin,     RecycleBin_Constructor},
  74         {&CLSID_ShellDesktop,   ISF_Desktop_Constructor},
  75         {&CLSID_ShellFSFolder,  IFSFolder_Constructor},
  76         {&CLSID_ShellItem,      IShellItem_Constructor},
  77         {&CLSID_ShellLink,      IShellLink_Constructor},
  78         {&CLSID_UnixDosFolder,  UnixDosFolder_Constructor},
  79         {&CLSID_UnixFolder,     UnixFolder_Constructor},
  80         {&CLSID_ExplorerBrowser,ExplorerBrowser_Constructor},
  81         {&CLSID_KnownFolderManager, KnownFolderManager_Constructor},
  82         {&CLSID_Shell,          IShellDispatch_Constructor},
  83         {NULL, NULL}
  84 };
  85
  86 #endif /* !__REACTOS__ */
  87
  88 /*************************************************************************
  89  * SHCoCreateInstance [SHELL32.102]
  90  *
  91  * Equivalent to CoCreateInstance. Under Windows 9x this function could sometimes
  92  * use the shell32 built-in "mini-COM" without the need to load ole32.dll - see
  93  * SHLoadOLE for details.
  94  *
  95  * Under wine if a "LoadWithoutCOM" value is present or the object resides in
  96  * shell32.dll the function will load the object manually without the help of ole32
  97  *
  98  * NOTES
  99  *     exported by ordinal
 100  *
 101  * SEE ALSO
 102  *     CoCreateInstance, SHLoadOLE
 103  */
 104 HRESULT WINAPI SHCoCreateInstance(
 105         LPCWSTR aclsid,
 106         const CLSID *clsid,
 107         LPUNKNOWN pUnkOuter,
 108         REFIID refiid,
 109         LPVOID *ppv)
 110 {
 111         DWORD   hres;
 112         CLSID   iid;
 113         const   CLSID * myclsid = clsid;
 114         WCHAR   sKeyName[MAX_PATH];
 115         static const WCHAR sCLSID[] = {'C','L','S','I','D','\\','\0'};
 116         WCHAR   sClassID[60];
 117         static const WCHAR sInProcServer32[] = {'\\','I','n','p','r','o','c','S','e','r','v','e','r','3','2','\0'};
 118         static const WCHAR sLoadWithoutCOM[] = {'L','o','a','d','W','i','t','h','o','u','t','C','O','M','\0'};
 119         WCHAR   sDllPath[MAX_PATH];
 120         HKEY    hKey = 0;
 121         DWORD   dwSize;
 122         IClassFactory * pcf = NULL;
 123
 124         if(!ppv) return E_POINTER;
 125         *ppv=NULL;
 126
 127         /* if the clsid is a string, convert it */
 128         if (!clsid)
 129         {
 130           if (!aclsid) return REGDB_E_CLASSNOTREG;
 131           SHCLSIDFromStringW(aclsid, &iid);
 132           myclsid = &iid;
 133         }
 134
 135         TRACE("(%p,%s,unk:%p,%s,%p)\n",
 136                 aclsid,shdebugstr_guid(myclsid),pUnkOuter,shdebugstr_guid(refiid),ppv);
 137
 138         if (SUCCEEDED(DllGetClassObject(myclsid, &IID_IClassFactory,(LPVOID*)&pcf)))
 139         {
 140             hres = IClassFactory_CreateInstance(pcf, pUnkOuter, refiid, ppv);
 141             IClassFactory_Release(pcf);
 142             goto end;
 143         }
 144
 145         /* we look up the dll path in the registry */
 146         SHStringFromGUIDW(myclsid, sClassID, sizeof(sClassID)/sizeof(WCHAR));
 147         lstrcpyW(sKeyName, sCLSID);
 148         lstrcatW(sKeyName, sClassID);
 149         lstrcatW(sKeyName, sInProcServer32);
 150
 151         if (RegOpenKeyExW(HKEY_CLASSES_ROOT, sKeyName, 0, KEY_READ, &hKey))
 152             return E_ACCESSDENIED;
 153
 154         /* if a special registry key is set, we load a shell extension without help of OLE32 */
 155         if (!SHQueryValueExW(hKey, sLoadWithoutCOM, 0, 0, 0, 0))
 156         {
 157             /* load an external dll without ole32 */
 158             HANDLE hLibrary;
 159             typedef HRESULT (CALLBACK *DllGetClassObjectFunc)(REFCLSID clsid, REFIID iid, LPVOID *ppv);
 160             DllGetClassObjectFunc DllGetClassObject;
 161
 162             dwSize = sizeof(sDllPath);
 163             SHQueryValueExW(hKey, NULL, 0,0, sDllPath, &dwSize );
 164
 165             if ((hLibrary = LoadLibraryExW(sDllPath, 0, LOAD_WITH_ALTERED_SEARCH_PATH)) == 0) {
 166                 ERR("couldn't load InprocServer32 dll %s\n", debugstr_w(sDllPath));
 167                 hres = E_ACCESSDENIED;
 168                 goto end;
 169             } else if (!(DllGetClassObject = (DllGetClassObjectFunc)GetProcAddress(hLibrary, "DllGetClassObject"))) {
 170                 ERR("couldn't find function DllGetClassObject in %s\n", debugstr_w(sDllPath));
 171                 FreeLibrary( hLibrary );
 172                 hres = E_ACCESSDENIED;
 173                 goto end;
 174             } else if (FAILED(hres = DllGetClassObject(myclsid, &IID_IClassFactory, (LPVOID*)&pcf))) {
 175                     TRACE("GetClassObject failed 0x%08x\n", hres);
 176                     goto end;
 177             }
 178
 179             hres = IClassFactory_CreateInstance(pcf, pUnkOuter, refiid, ppv);
 180             IClassFactory_Release(pcf);
 181         } else {
 182
 183             /* load an external dll in the usual way */
 184             hres = CoCreateInstance(myclsid, pUnkOuter, CLSCTX_INPROC_SERVER, refiid, ppv);
 185         }
 186
 187 end:
 188         if (hKey) RegCloseKey(hKey);
 189         if(hres!=S_OK)
 190         {
 191           ERR("failed (0x%08x) to create CLSID:%s IID:%s\n",
 192               hres, shdebugstr_guid(myclsid), shdebugstr_guid(refiid));
 193           ERR("class not found in registry\n");
 194         }
 195
 196         TRACE("-- instance: %p\n",*ppv);
 197         return hres;
 198 }
 199
 200 #ifndef __REACTOS__
 201 /*************************************************************************
 202  * DllGetClassObject     [SHELL32.@]
 203  * SHDllGetClassObject   [SHELL32.128]
 204  */
 205 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID iid, LPVOID *ppv)
 206 {
 207         HRESULT hres = E_OUTOFMEMORY;
 208         IClassFactory * pcf = NULL;
 209         int i;
 210
 211         TRACE("CLSID:%s,IID:%s\n",shdebugstr_guid(rclsid),shdebugstr_guid(iid));
 212
 213         if (!ppv) return E_INVALIDARG;
 214         *ppv = NULL;
 215
 216         /* search our internal interface table */
 217         for(i=0;InterfaceTable[i].riid;i++) {
 218             if(IsEqualIID(InterfaceTable[i].riid, rclsid)) {
 219                 TRACE("index[%u]\n", i);
 220                 pcf = IDefClF_fnConstructor(InterfaceTable[i].lpfnCI, NULL, NULL);
 221             }
 222         }
 223
 224         if (!pcf) {
 225             FIXME("failed for CLSID=%s\n", shdebugstr_guid(rclsid));
 226             return CLASS_E_CLASSNOTAVAILABLE;
 227         }
 228
 229         hres = IClassFactory_QueryInterface(pcf, iid, ppv);
 230         IClassFactory_Release(pcf);
 231
 232         TRACE("-- pointer to class factory: %p\n",*ppv);
 233         return hres;
 234 }
 235 #endif
 236
 237 /*************************************************************************
 238  * SHCLSIDFromString                            [SHELL32.147]
 239  *
 240  * Under Windows 9x this was an ANSI version of CLSIDFromString. It also allowed
 241  * to avoid dependency on ole32.dll (see SHLoadOLE for details).
 242  *
 243  * Under Windows NT/2000/XP this is equivalent to CLSIDFromString
 244  *
 245  * NOTES
 246  *     exported by ordinal
 247  *
 248  * SEE ALSO
 249  *     CLSIDFromString, SHLoadOLE
 250  */
 251 DWORD WINAPI SHCLSIDFromStringA (LPCSTR clsid, CLSID *id)
 252 {
 253     WCHAR buffer[40];
 254     TRACE("(%p(%s) %p)\n", clsid, clsid, id);
 255     if (!MultiByteToWideChar( CP_ACP, 0, clsid, -1, buffer, sizeof(buffer)/sizeof(WCHAR) ))
 256         return CO_E_CLASSSTRING;
 257     return CLSIDFromString( buffer, id );
 258 }
 259 DWORD WINAPI SHCLSIDFromStringW (LPCWSTR clsid, CLSID *id)
 260 {
 261         TRACE("(%p(%s) %p)\n", clsid, debugstr_w(clsid), id);
 262         return CLSIDFromString(clsid, id);
 263 }
 264 DWORD WINAPI SHCLSIDFromStringAW (LPCVOID clsid, CLSID *id)
 265 {
 266         if (SHELL_OsIsUnicode())
 267           return SHCLSIDFromStringW (clsid, id);
 268         return SHCLSIDFromStringA (clsid, id);
 269 }
 270
 271 /*************************************************************************
 272  *                       SHGetMalloc                    [SHELL32.@]
 273  *
 274  * Equivalent to CoGetMalloc(MEMCTX_TASK, ...). Under Windows 9x this function
 275  * could use the shell32 built-in "mini-COM" without the need to load ole32.dll -
 276  * see SHLoadOLE for details.
 277  *
 278  * PARAMS
 279  *  lpmal [O] Destination for IMalloc interface.
 280  *
 281  * RETURNS
 282  *  Success: S_OK. lpmal contains the shells IMalloc interface.
 283  *  Failure. An HRESULT error code.
 284  *
 285  * SEE ALSO
 286  *  CoGetMalloc, SHLoadOLE
 287  */
 288 HRESULT WINAPI SHGetMalloc(LPMALLOC *lpmal)
 289 {
 290         TRACE("(%p)\n", lpmal);
 291         return CoGetMalloc(MEMCTX_TASK, lpmal);
 292 }
 293
 294 /*************************************************************************
 295  * SHAlloc                                      [SHELL32.196]
 296  *
 297  * Equivalent to CoTaskMemAlloc. Under Windows 9x this function could use
 298  * the shell32 built-in "mini-COM" without the need to load ole32.dll -
 299  * see SHLoadOLE for details.
 300  *
 301  * NOTES
 302  *     exported by ordinal
 303  *
 304  * SEE ALSO
 305  *     CoTaskMemAlloc, SHLoadOLE
 306  */
 307 LPVOID WINAPI SHAlloc(SIZE_T len)
 308 {
 309         LPVOID ret;
 310
 311         ret = CoTaskMemAlloc(len);
 312         TRACE("%u bytes at %p\n",len, ret);
 313         return ret;
 314 }
 315
 316 /*************************************************************************
 317  * SHFree                                       [SHELL32.195]
 318  *
 319  * Equivalent to CoTaskMemFree. Under Windows 9x this function could use
 320  * the shell32 built-in "mini-COM" without the need to load ole32.dll -
 321  * see SHLoadOLE for details.
 322  *
 323  * NOTES
 324  *     exported by ordinal
 325  *
 326  * SEE ALSO
 327  *     CoTaskMemFree, SHLoadOLE
 328  */
 329 void WINAPI SHFree(LPVOID pv)
 330 {
 331         TRACE("%p\n",pv);
 332         CoTaskMemFree(pv);
 333 }
 334
 335 #ifndef __REACTOS__
 336 /*************************************************************************
 337  * SHGetDesktopFolder                   [SHELL32.@]
 338  */
 339 HRESULT WINAPI SHGetDesktopFolder(IShellFolder **psf)
 340 {
 341         HRESULT hres;
 342
 343         TRACE("(%p)\n", psf);
 344
 345         if(!psf) return E_INVALIDARG;
 346
 347         *psf = NULL;
 348         hres = ISF_Desktop_Constructor(NULL, &IID_IShellFolder, (LPVOID*)psf);
 349
 350         TRACE("-- %p->(%p) 0x%08x\n", psf, *psf, hres);
 351         return hres;
 352 }
 353 #endif
 354
 355 /**************************************************************************
 356  * Default ClassFactory Implementation
 357  *
 358  * SHCreateDefClassObject
 359  *
 360  * NOTES
 361  *  Helper function for dlls without their own classfactory.
 362  *  A generic classfactory is returned.
 363  *  When the CreateInstance of the cf is called the callback is executed.
 364  */
 365
 366 typedef struct
 367 {
 368     IClassFactory               IClassFactory_iface;
 369     LONG                        ref;
 370     CLSID                       *rclsid;
 371     LPFNCREATEINSTANCE          lpfnCI;
 372     const IID *                 riidInst;
 373     LONG *                      pcRefDll; /* pointer to refcounter in external dll (ugrrr...) */
 374 } IDefClFImpl;
 375
 376 static inline IDefClFImpl *impl_from_IClassFactory(IClassFactory *iface)
 377 {
 378         return CONTAINING_RECORD(iface, IDefClFImpl, IClassFactory_iface);
 379 }
 380
 381 #ifndef __REACTOS__
 382
 383 static const IClassFactoryVtbl dclfvt;
 384
 385 /**************************************************************************
 386  *  IDefClF_fnConstructor
 387  */
 388
 389 static IClassFactory * IDefClF_fnConstructor(LPFNCREATEINSTANCE lpfnCI, PLONG pcRefDll, REFIID riidInst)
 390 {
 391         IDefClFImpl* lpclf;
 392
 393         lpclf = HeapAlloc(GetProcessHeap(),0,sizeof(IDefClFImpl));
 394         lpclf->ref = 1;
 395         lpclf->IClassFactory_iface.lpVtbl = &dclfvt;
 396         lpclf->lpfnCI = lpfnCI;
 397         lpclf->pcRefDll = pcRefDll;
 398
 399         if (pcRefDll) InterlockedIncrement(pcRefDll);
 400         lpclf->riidInst = riidInst;
 401
 402         TRACE("(%p)%s\n",lpclf, shdebugstr_guid(riidInst));
 403         return (LPCLASSFACTORY)lpclf;
 404 }
 405 /**************************************************************************
 406  *  IDefClF_fnQueryInterface
 407  */
 408 static HRESULT WINAPI IDefClF_fnQueryInterface(
 409   LPCLASSFACTORY iface, REFIID riid, LPVOID *ppvObj)
 410 {
 411         IDefClFImpl *This = impl_from_IClassFactory(iface);
 412
 413         TRACE("(%p)->(%s)\n",This,shdebugstr_guid(riid));
 414
 415         *ppvObj = NULL;
 416
 417         if(IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IClassFactory)) {
 418           *ppvObj = This;
 419           InterlockedIncrement(&This->ref);
 420           return S_OK;
 421         }
 422
 423         TRACE("-- E_NOINTERFACE\n");
 424         return E_NOINTERFACE;
 425 }
 426 /******************************************************************************
 427  * IDefClF_fnAddRef
 428  */
 429 static ULONG WINAPI IDefClF_fnAddRef(LPCLASSFACTORY iface)
 430 {
 431         IDefClFImpl *This = impl_from_IClassFactory(iface);
 432         ULONG refCount = InterlockedIncrement(&This->ref);
 433
 434         TRACE("(%p)->(count=%u)\n", This, refCount - 1);
 435
 436         return refCount;
 437 }
 438 /******************************************************************************
 439  * IDefClF_fnRelease
 440  */
 441 static ULONG WINAPI IDefClF_fnRelease(LPCLASSFACTORY iface)
 442 {
 443         IDefClFImpl *This = impl_from_IClassFactory(iface);
 444         ULONG refCount = InterlockedDecrement(&This->ref);
 445
 446         TRACE("(%p)->(count=%u)\n", This, refCount + 1);
 447
 448         if (!refCount)
 449         {
 450           if (This->pcRefDll) InterlockedDecrement(This->pcRefDll);
 451
 452           TRACE("-- destroying IClassFactory(%p)\n",This);
 453           HeapFree(GetProcessHeap(),0,This);
 454           return 0;
 455         }
 456         return refCount;
 457 }
 458 /******************************************************************************
 459  * IDefClF_fnCreateInstance
 460  */
 461 static HRESULT WINAPI IDefClF_fnCreateInstance(
 462   LPCLASSFACTORY iface, LPUNKNOWN pUnkOuter, REFIID riid, LPVOID *ppvObject)
 463 {
 464         IDefClFImpl *This = impl_from_IClassFactory(iface);
 465
 466         TRACE("%p->(%p,%s,%p)\n",This,pUnkOuter,shdebugstr_guid(riid),ppvObject);
 467
 468         *ppvObject = NULL;
 469
 470         if ( This->riidInst==NULL ||
 471              IsEqualCLSID(riid, This->riidInst) ||
 472              IsEqualCLSID(riid, &IID_IUnknown) )
 473         {
 474           return This->lpfnCI(pUnkOuter, riid, ppvObject);
 475         }
 476
 477         ERR("unknown IID requested %s\n",shdebugstr_guid(riid));
 478         return E_NOINTERFACE;
 479 }
 480 /******************************************************************************
 481  * IDefClF_fnLockServer
 482  */
 483 static HRESULT WINAPI IDefClF_fnLockServer(LPCLASSFACTORY iface, BOOL fLock)
 484 {
 485         IDefClFImpl *This = impl_from_IClassFactory(iface);
 486         TRACE("%p->(0x%x), not implemented\n",This, fLock);
 487         return E_NOTIMPL;
 488 }
 489
 490 static const IClassFactoryVtbl dclfvt =
 491 {
 492     IDefClF_fnQueryInterface,
 493     IDefClF_fnAddRef,
 494   IDefClF_fnRelease,
 495   IDefClF_fnCreateInstance,
 496   IDefClF_fnLockServer
 497 };
 498
 499 /******************************************************************************
 500  * SHCreateDefClassObject                       [SHELL32.70]
 501  */
 502 HRESULT WINAPI SHCreateDefClassObject(
 503         REFIID  riid,
 504         LPVOID* ppv,
 505         LPFNCREATEINSTANCE lpfnCI,      /* [in] create instance callback entry */
 506         LPDWORD pcRefDll,               /* [in/out] ref count of the dll */
 507         REFIID  riidInst)               /* [in] optional interface to the instance */
 508 {
 509         IClassFactory * pcf;
 510
 511         TRACE("%s %p %p %p %s\n",
 512               shdebugstr_guid(riid), ppv, lpfnCI, pcRefDll, shdebugstr_guid(riidInst));
 513
 514         if (! IsEqualCLSID(riid, &IID_IClassFactory) ) return E_NOINTERFACE;
 515         if (! (pcf = IDefClF_fnConstructor(lpfnCI, (PLONG)pcRefDll, riidInst))) return E_OUTOFMEMORY;
 516         *ppv = pcf;
 517         return S_OK;
 518 }
 519
 520 #endif /* !__REACTOS__ */
 521
 522 /*************************************************************************
 523  *  DragAcceptFiles             [SHELL32.@]
 524  */
 525 void WINAPI DragAcceptFiles(HWND hWnd, BOOL b)
 526 {
 527         LONG exstyle;
 528
 529         if( !IsWindow(hWnd) ) return;
 530         exstyle = GetWindowLongPtrA(hWnd,GWL_EXSTYLE);
 531         if (b)
 532           exstyle |= WS_EX_ACCEPTFILES;
 533         else
 534           exstyle &= ~WS_EX_ACCEPTFILES;
 535         SetWindowLongPtrA(hWnd,GWL_EXSTYLE,exstyle);
 536 }
 537
 538 /*************************************************************************
 539  * DragFinish           [SHELL32.@]
 540  */
 541 void WINAPI DragFinish(HDROP h)
 542 {
 543         TRACE("\n");
 544         GlobalFree(h);
 545 }
 546
 547 /*************************************************************************
 548  * DragQueryPoint               [SHELL32.@]
 549  */
 550 BOOL WINAPI DragQueryPoint(HDROP hDrop, POINT *p)
 551 {
 552         DROPFILES *lpDropFileStruct;
 553         BOOL bRet;
 554
 555         TRACE("\n");
 556
 557         lpDropFileStruct = GlobalLock(hDrop);
 558
 559         *p = lpDropFileStruct->pt;
 560         bRet = lpDropFileStruct->fNC;
 561
 562         GlobalUnlock(hDrop);
 563         return bRet;
 564 }
 565
 566 /*************************************************************************
 567  *  DragQueryFileA              [SHELL32.@]
 568  *  DragQueryFile               [SHELL32.@]
 569  */
 570 UINT WINAPI DragQueryFileA(
 571         HDROP hDrop,
 572         UINT lFile,
 573         LPSTR lpszFile,
 574         UINT lLength)
 575 {
 576         LPSTR lpDrop;
 577         UINT i = 0;
 578         DROPFILES *lpDropFileStruct = GlobalLock(hDrop);
 579
 580         TRACE("(%p, %x, %p, %u)\n",     hDrop,lFile,lpszFile,lLength);
 581
 582         if(!lpDropFileStruct) goto end;
 583
 584         lpDrop = (LPSTR) lpDropFileStruct + lpDropFileStruct->pFiles;
 585
 586         if(lpDropFileStruct->fWide) {
 587             LPWSTR lpszFileW = NULL;
 588
 589             if(lpszFile) {
 590                 lpszFileW = HeapAlloc(GetProcessHeap(), 0, lLength*sizeof(WCHAR));
 591                 if(lpszFileW == NULL) {
 592                     goto end;
 593                 }
 594             }
 595             i = DragQueryFileW(hDrop, lFile, lpszFileW, lLength);
 596
 597             if(lpszFileW) {
 598                 WideCharToMultiByte(CP_ACP, 0, lpszFileW, -1, lpszFile, lLength, 0, NULL);
 599                 HeapFree(GetProcessHeap(), 0, lpszFileW);
 600             }
 601             goto end;
 602         }
 603
 604         while (i++ < lFile)
 605         {
 606           while (*lpDrop++); /* skip filename */
 607           if (!*lpDrop)
 608           {
 609             i = (lFile == 0xFFFFFFFF) ? i : 0;
 610             goto end;
 611           }
 612         }
 613
 614         i = strlen(lpDrop);
 615         if (!lpszFile ) goto end;   /* needed buffer size */
 616         lstrcpynA (lpszFile, lpDrop, lLength);
 617 end:
 618         GlobalUnlock(hDrop);
 619         return i;
 620 }
 621
 622 /*************************************************************************
 623  *  DragQueryFileW              [SHELL32.@]
 624  */
 625 UINT WINAPI DragQueryFileW(
 626         HDROP hDrop,
 627         UINT lFile,
 628         LPWSTR lpszwFile,
 629         UINT lLength)
 630 {
 631         LPWSTR lpwDrop;
 632         UINT i = 0;
 633         DROPFILES *lpDropFileStruct = GlobalLock(hDrop);
 634
 635         TRACE("(%p, %x, %p, %u)\n", hDrop,lFile,lpszwFile,lLength);
 636
 637         if(!lpDropFileStruct) goto end;
 638
 639         lpwDrop = (LPWSTR) ((LPSTR)lpDropFileStruct + lpDropFileStruct->pFiles);
 640
 641         if(lpDropFileStruct->fWide == FALSE) {
 642             LPSTR lpszFileA = NULL;
 643
 644             if(lpszwFile) {
 645                 lpszFileA = HeapAlloc(GetProcessHeap(), 0, lLength);
 646                 if(lpszFileA == NULL) {
 647                     goto end;
 648                 }
 649             }
 650             i = DragQueryFileA(hDrop, lFile, lpszFileA, lLength);
 651
 652             if(lpszFileA) {
 653                 MultiByteToWideChar(CP_ACP, 0, lpszFileA, -1, lpszwFile, lLength);
 654                 HeapFree(GetProcessHeap(), 0, lpszFileA);
 655             }
 656             goto end;
 657         }
 658
 659         i = 0;
 660         while (i++ < lFile)
 661         {
 662           while (*lpwDrop++); /* skip filename */
 663           if (!*lpwDrop)
 664           {
 665             i = (lFile == 0xFFFFFFFF) ? i : 0;
 666             goto end;
 667           }
 668         }
 669
 670         i = strlenW(lpwDrop);
 671         if ( !lpszwFile) goto end;   /* needed buffer size */
 672         lstrcpynW (lpszwFile, lpwDrop, lLength);
 673 end:
 674         GlobalUnlock(hDrop);
 675         return i;
 676 }
 677
 678 /*************************************************************************
 679  *  SHPropStgCreate             [SHELL32.685]
 680  */
 681 HRESULT WINAPI SHPropStgCreate(IPropertySetStorage *psstg, REFFMTID fmtid,
 682         const CLSID *pclsid, DWORD grfFlags, DWORD grfMode,
 683         DWORD dwDisposition, IPropertyStorage **ppstg, UINT *puCodePage)
 684 {
 685     PROPSPEC prop;
 686     PROPVARIANT ret;
 687     HRESULT hres;
 688
 689     TRACE("%p %s %s %x %x %x %p %p\n", psstg, debugstr_guid(fmtid), debugstr_guid(pclsid),
 690             grfFlags, grfMode, dwDisposition, ppstg, puCodePage);
 691
 692     hres = IPropertySetStorage_Open(psstg, fmtid, grfMode, ppstg);
 693
 694     switch(dwDisposition) {
 695     case CREATE_ALWAYS:
 696         if(SUCCEEDED(hres)) {
 697             IPropertyStorage_Release(*ppstg);
 698             hres = IPropertySetStorage_Delete(psstg, fmtid);
 699             if(FAILED(hres))
 700                 return hres;
 701             hres = E_FAIL;
 702         }
 703
 704     case OPEN_ALWAYS:
 705     case CREATE_NEW:
 706         if(FAILED(hres))
 707             hres = IPropertySetStorage_Create(psstg, fmtid, pclsid,
 708                     grfFlags, grfMode, ppstg);
 709
 710     case OPEN_EXISTING:
 711         if(FAILED(hres))
 712             return hres;
 713
 714         if(puCodePage) {
 715             prop.ulKind = PRSPEC_PROPID;
 716             prop.u.propid = PID_CODEPAGE;
 717             hres = IPropertyStorage_ReadMultiple(*ppstg, 1, &prop, &ret);
 718             if(FAILED(hres) || ret.vt!=VT_I2)
 719                 *puCodePage = 0;
 720             else
 721                 *puCodePage = ret.u.iVal;
 722         }
 723     }
 724
 725     return S_OK;
 726 }
 727
 728 /*************************************************************************
 729  *  SHPropStgReadMultiple       [SHELL32.688]
 730  */
 731 HRESULT WINAPI SHPropStgReadMultiple(IPropertyStorage *pps, UINT uCodePage,
 732         ULONG cpspec, const PROPSPEC *rgpspec, PROPVARIANT *rgvar)
 733 {
 734     STATPROPSETSTG stat;
 735     HRESULT hres;
 736
 737     FIXME("%p %u %u %p %p\n", pps, uCodePage, cpspec, rgpspec, rgvar);
 738
 739     memset(rgvar, 0, cpspec*sizeof(PROPVARIANT));
 740     hres = IPropertyStorage_ReadMultiple(pps, cpspec, rgpspec, rgvar);
 741     if(FAILED(hres))
 742         return hres;
 743
 744     if(!uCodePage) {
 745         PROPSPEC prop;
 746         PROPVARIANT ret;
 747
 748         prop.ulKind = PRSPEC_PROPID;
 749         prop.u.propid = PID_CODEPAGE;
 750         hres = IPropertyStorage_ReadMultiple(pps, 1, &prop, &ret);
 751         if(FAILED(hres) || ret.vt!=VT_I2)
 752             return S_OK;
 753
 754         uCodePage = ret.u.iVal;
 755     }
 756
 757     hres = IPropertyStorage_Stat(pps, &stat);
 758     if(FAILED(hres))
 759         return S_OK;
 760
 761     /* TODO: do something with codepage and stat */
 762     return S_OK;
 763 }
 764
 765 /*************************************************************************
 766  *  SHPropStgWriteMultiple      [SHELL32.689]
 767  */
 768 HRESULT WINAPI SHPropStgWriteMultiple(IPropertyStorage *pps, UINT *uCodePage,
 769         ULONG cpspec, const PROPSPEC *rgpspec, PROPVARIANT *rgvar, PROPID propidNameFirst)
 770 {
 771     STATPROPSETSTG stat;
 772     UINT codepage;
 773     HRESULT hres;
 774
 775     FIXME("%p %p %u %p %p %d\n", pps, uCodePage, cpspec, rgpspec, rgvar, propidNameFirst);
 776
 777     hres = IPropertyStorage_Stat(pps, &stat);
 778     if(FAILED(hres))
 779         return hres;
 780
 781     if(uCodePage && *uCodePage)
 782         codepage = *uCodePage;
 783     else {
 784         PROPSPEC prop;
 785         PROPVARIANT ret;
 786
 787         prop.ulKind = PRSPEC_PROPID;
 788         prop.u.propid = PID_CODEPAGE;
 789         hres = IPropertyStorage_ReadMultiple(pps, 1, &prop, &ret);
 790         if(FAILED(hres))
 791             return hres;
 792         if(ret.vt!=VT_I2 || !ret.u.iVal)
 793             return E_FAIL;
 794
 795         codepage = ret.u.iVal;
 796         if(uCodePage)
 797             *uCodePage = codepage;
 798     }
 799
 800     /* TODO: do something with codepage and stat */
 801
 802     hres = IPropertyStorage_WriteMultiple(pps, cpspec, rgpspec, rgvar, propidNameFirst);
 803     return hres;
 804 }
 805
 806 /*************************************************************************
 807  *  SHCreateQueryCancelAutoPlayMoniker [SHELL32.@]
 808  */
 809 HRESULT WINAPI SHCreateQueryCancelAutoPlayMoniker(IMoniker **moniker)
 810 {
 811     TRACE("%p\n", moniker);
 812
 813     if (!moniker) return E_INVALIDARG;
 814     return CreateClassMoniker(&CLSID_QueryCancelAutoPlay, moniker);
 815 }