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