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     const IClassFactoryVtbl    *lpVtbl;
 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 const IClassFactoryVtbl dclfvt;
 370
 371 /**************************************************************************
 372  *  IDefClF_fnConstructor
 373  */
 374
 375 static IClassFactory * IDefClF_fnConstructor(LPFNCREATEINSTANCE lpfnCI, PLONG pcRefDll, REFIID riidInst)
 376 {
 377         IDefClFImpl* lpclf;
 378
 379         lpclf = HeapAlloc(GetProcessHeap(),0,sizeof(IDefClFImpl));
 380         lpclf->ref = 1;
 381         lpclf->lpVtbl = &dclfvt;
 382         lpclf->lpfnCI = lpfnCI;
 383         lpclf->pcRefDll = pcRefDll;
 384
 385         if (pcRefDll) InterlockedIncrement(pcRefDll);
 386         lpclf->riidInst = riidInst;
 387
 388         TRACE("(%p)%s\n",lpclf, shdebugstr_guid(riidInst));
 389         return (LPCLASSFACTORY)lpclf;
 390 }
 391 /**************************************************************************
 392  *  IDefClF_fnQueryInterface
 393  */
 394 static HRESULT WINAPI IDefClF_fnQueryInterface(
 395   LPCLASSFACTORY iface, REFIID riid, LPVOID *ppvObj)
 396 {
 397         IDefClFImpl *This = (IDefClFImpl *)iface;
 398
 399         TRACE("(%p)->(%s)\n",This,shdebugstr_guid(riid));
 400
 401         *ppvObj = NULL;
 402
 403         if(IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IClassFactory)) {
 404           *ppvObj = This;
 405           InterlockedIncrement(&This->ref);
 406           return S_OK;
 407         }
 408
 409         TRACE("-- E_NOINTERFACE\n");
 410         return E_NOINTERFACE;
 411 }
 412 /******************************************************************************
 413  * IDefClF_fnAddRef
 414  */
 415 static ULONG WINAPI IDefClF_fnAddRef(LPCLASSFACTORY iface)
 416 {
 417         IDefClFImpl *This = (IDefClFImpl *)iface;
 418         ULONG refCount = InterlockedIncrement(&This->ref);
 419
 420         TRACE("(%p)->(count=%u)\n", This, refCount - 1);
 421
 422         return refCount;
 423 }
 424 /******************************************************************************
 425  * IDefClF_fnRelease
 426  */
 427 static ULONG WINAPI IDefClF_fnRelease(LPCLASSFACTORY iface)
 428 {
 429         IDefClFImpl *This = (IDefClFImpl *)iface;
 430         ULONG refCount = InterlockedDecrement(&This->ref);
 431
 432         TRACE("(%p)->(count=%u)\n", This, refCount + 1);
 433
 434         if (!refCount)
 435         {
 436           if (This->pcRefDll) InterlockedDecrement(This->pcRefDll);
 437
 438           TRACE("-- destroying IClassFactory(%p)\n",This);
 439           HeapFree(GetProcessHeap(),0,This);
 440           return 0;
 441         }
 442         return refCount;
 443 }
 444 /******************************************************************************
 445  * IDefClF_fnCreateInstance
 446  */
 447 static HRESULT WINAPI IDefClF_fnCreateInstance(
 448   LPCLASSFACTORY iface, LPUNKNOWN pUnkOuter, REFIID riid, LPVOID *ppvObject)
 449 {
 450         IDefClFImpl *This = (IDefClFImpl *)iface;
 451
 452         TRACE("%p->(%p,%s,%p)\n",This,pUnkOuter,shdebugstr_guid(riid),ppvObject);
 453
 454         *ppvObject = NULL;
 455
 456         if ( This->riidInst==NULL ||
 457              IsEqualCLSID(riid, This->riidInst) ||
 458              IsEqualCLSID(riid, &IID_IUnknown) )
 459         {
 460           return This->lpfnCI(pUnkOuter, riid, ppvObject);
 461         }
 462
 463         ERR("unknown IID requested %s\n",shdebugstr_guid(riid));
 464         return E_NOINTERFACE;
 465 }
 466 /******************************************************************************
 467  * IDefClF_fnLockServer
 468  */
 469 static HRESULT WINAPI IDefClF_fnLockServer(LPCLASSFACTORY iface, BOOL fLock)
 470 {
 471         IDefClFImpl *This = (IDefClFImpl *)iface;
 472         TRACE("%p->(0x%x), not implemented\n",This, fLock);
 473         return E_NOTIMPL;
 474 }
 475
 476 static const IClassFactoryVtbl dclfvt =
 477 {
 478     IDefClF_fnQueryInterface,
 479     IDefClF_fnAddRef,
 480   IDefClF_fnRelease,
 481   IDefClF_fnCreateInstance,
 482   IDefClF_fnLockServer
 483 };
 484
 485 /******************************************************************************
 486  * SHCreateDefClassObject                       [SHELL32.70]
 487  */
 488 HRESULT WINAPI SHCreateDefClassObject(
 489         REFIID  riid,
 490         LPVOID* ppv,
 491         LPFNCREATEINSTANCE lpfnCI,      /* [in] create instance callback entry */
 492         LPDWORD pcRefDll,               /* [in/out] ref count of the dll */
 493         REFIID  riidInst)               /* [in] optional interface to the instance */
 494 {
 495         IClassFactory * pcf;
 496
 497         TRACE("%s %p %p %p %s\n",
 498               shdebugstr_guid(riid), ppv, lpfnCI, pcRefDll, shdebugstr_guid(riidInst));
 499
 500         if (! IsEqualCLSID(riid, &IID_IClassFactory) ) return E_NOINTERFACE;
 501         if (! (pcf = IDefClF_fnConstructor(lpfnCI, (PLONG)pcRefDll, riidInst))) return E_OUTOFMEMORY;
 502         *ppv = pcf;
 503         return NOERROR;
 504 }
 505
 506 /*************************************************************************
 507  *  DragAcceptFiles             [SHELL32.@]
 508  */
 509 void WINAPI DragAcceptFiles(HWND hWnd, BOOL b)
 510 {
 511         LONG exstyle;
 512
 513         if( !IsWindow(hWnd) ) return;
 514         exstyle = GetWindowLongA(hWnd,GWL_EXSTYLE);
 515         if (b)
 516           exstyle |= WS_EX_ACCEPTFILES;
 517         else
 518           exstyle &= ~WS_EX_ACCEPTFILES;
 519         SetWindowLongA(hWnd,GWL_EXSTYLE,exstyle);
 520 }
 521
 522 /*************************************************************************
 523  * DragFinish           [SHELL32.@]
 524  */
 525 void WINAPI DragFinish(HDROP h)
 526 {
 527         TRACE("\n");
 528         GlobalFree(h);
 529 }
 530
 531 /*************************************************************************
 532  * DragQueryPoint               [SHELL32.@]
 533  */
 534 BOOL WINAPI DragQueryPoint(HDROP hDrop, POINT *p)
 535 {
 536         DROPFILES *lpDropFileStruct;
 537         BOOL bRet;
 538
 539         TRACE("\n");
 540
 541         lpDropFileStruct = GlobalLock(hDrop);
 542
 543         *p = lpDropFileStruct->pt;
 544         bRet = lpDropFileStruct->fNC;
 545
 546         GlobalUnlock(hDrop);
 547         return bRet;
 548 }
 549
 550 /*************************************************************************
 551  *  DragQueryFileA              [SHELL32.@]
 552  *  DragQueryFile               [SHELL32.@]
 553  */
 554 UINT WINAPI DragQueryFileA(
 555         HDROP hDrop,
 556         UINT lFile,
 557         LPSTR lpszFile,
 558         UINT lLength)
 559 {
 560         LPSTR lpDrop;
 561         UINT i = 0;
 562         DROPFILES *lpDropFileStruct = GlobalLock(hDrop);
 563
 564         TRACE("(%p, %x, %p, %u)\n",     hDrop,lFile,lpszFile,lLength);
 565
 566         if(!lpDropFileStruct) goto end;
 567
 568         lpDrop = (LPSTR) lpDropFileStruct + lpDropFileStruct->pFiles;
 569
 570         if(lpDropFileStruct->fWide) {
 571             LPWSTR lpszFileW = NULL;
 572
 573             if(lpszFile) {
 574                 lpszFileW = HeapAlloc(GetProcessHeap(), 0, lLength*sizeof(WCHAR));
 575                 if(lpszFileW == NULL) {
 576                     goto end;
 577                 }
 578             }
 579             i = DragQueryFileW(hDrop, lFile, lpszFileW, lLength);
 580
 581             if(lpszFileW) {
 582                 WideCharToMultiByte(CP_ACP, 0, lpszFileW, -1, lpszFile, lLength, 0, NULL);
 583                 HeapFree(GetProcessHeap(), 0, lpszFileW);
 584             }
 585             goto end;
 586         }
 587
 588         while (i++ < lFile)
 589         {
 590           while (*lpDrop++); /* skip filename */
 591           if (!*lpDrop)
 592           {
 593             i = (lFile == 0xFFFFFFFF) ? i : 0;
 594             goto end;
 595           }
 596         }
 597
 598         i = strlen(lpDrop);
 599         if (!lpszFile ) goto end;   /* needed buffer size */
 600         lstrcpynA (lpszFile, lpDrop, lLength);
 601 end:
 602         GlobalUnlock(hDrop);
 603         return i;
 604 }
 605
 606 /*************************************************************************
 607  *  DragQueryFileW              [SHELL32.@]
 608  */
 609 UINT WINAPI DragQueryFileW(
 610         HDROP hDrop,
 611         UINT lFile,
 612         LPWSTR lpszwFile,
 613         UINT lLength)
 614 {
 615         LPWSTR lpwDrop;
 616         UINT i = 0;
 617         DROPFILES *lpDropFileStruct = GlobalLock(hDrop);
 618
 619         TRACE("(%p, %x, %p, %u)\n", hDrop,lFile,lpszwFile,lLength);
 620
 621         if(!lpDropFileStruct) goto end;
 622
 623         lpwDrop = (LPWSTR) ((LPSTR)lpDropFileStruct + lpDropFileStruct->pFiles);
 624
 625         if(lpDropFileStruct->fWide == FALSE) {
 626             LPSTR lpszFileA = NULL;
 627
 628             if(lpszwFile) {
 629                 lpszFileA = HeapAlloc(GetProcessHeap(), 0, lLength);
 630                 if(lpszFileA == NULL) {
 631                     goto end;
 632                 }
 633             }
 634             i = DragQueryFileA(hDrop, lFile, lpszFileA, lLength);
 635
 636             if(lpszFileA) {
 637                 MultiByteToWideChar(CP_ACP, 0, lpszFileA, -1, lpszwFile, lLength);
 638                 HeapFree(GetProcessHeap(), 0, lpszFileA);
 639             }
 640             goto end;
 641         }
 642
 643         i = 0;
 644         while (i++ < lFile)
 645         {
 646           while (*lpwDrop++); /* skip filename */
 647           if (!*lpwDrop)
 648           {
 649             i = (lFile == 0xFFFFFFFF) ? i : 0;
 650             goto end;
 651           }
 652         }
 653
 654         i = strlenW(lpwDrop);
 655         if ( !lpszwFile) goto end;   /* needed buffer size */
 656         lstrcpynW (lpszwFile, lpwDrop, lLength);
 657 end:
 658         GlobalUnlock(hDrop);
 659         return i;
 660 }
 661
 662 /*************************************************************************
 663  *  SHPropStgCreate             [SHELL32.685]
 664  */
 665 HRESULT WINAPI SHPropStgCreate(IPropertySetStorage *psstg, REFFMTID fmtid,
 666         const CLSID *pclsid, DWORD grfFlags, DWORD grfMode,
 667         DWORD dwDisposition, IPropertyStorage **ppstg, UINT *puCodePage)
 668 {
 669     PROPSPEC prop;
 670     PROPVARIANT ret;
 671     HRESULT hres;
 672
 673     TRACE("%p %s %s %x %x %x %p %p\n", psstg, debugstr_guid(fmtid), debugstr_guid(pclsid),
 674             grfFlags, grfMode, dwDisposition, ppstg, puCodePage);
 675
 676     hres = IPropertySetStorage_Open(psstg, fmtid, grfMode, ppstg);
 677
 678     switch(dwDisposition) {
 679     case CREATE_ALWAYS:
 680         if(SUCCEEDED(hres)) {
 681             IPropertyStorage_Release(*ppstg);
 682             hres = IPropertySetStorage_Delete(psstg, fmtid);
 683             if(FAILED(hres))
 684                 return hres;
 685             hres = E_FAIL;
 686         }
 687
 688     case OPEN_ALWAYS:
 689     case CREATE_NEW:
 690         if(FAILED(hres))
 691             hres = IPropertySetStorage_Create(psstg, fmtid, pclsid,
 692                     grfFlags, grfMode, ppstg);
 693
 694     case OPEN_EXISTING:
 695         if(FAILED(hres))
 696             return hres;
 697
 698         if(puCodePage) {
 699             prop.ulKind = PRSPEC_PROPID;
 700             prop.u.propid = PID_CODEPAGE;
 701             hres = IPropertyStorage_ReadMultiple(*ppstg, 1, &prop, &ret);
 702             if(FAILED(hres) || ret.vt!=VT_I2)
 703                 *puCodePage = 0;
 704             else
 705                 *puCodePage = ret.u.iVal;
 706         }
 707     }
 708
 709     return S_OK;
 710 }
 711
 712 /*************************************************************************
 713  *  SHPropStgReadMultiple       [SHELL32.688]
 714  */
 715 HRESULT WINAPI SHPropStgReadMultiple(IPropertyStorage *pps, UINT uCodePage,
 716         ULONG cpspec, const PROPSPEC *rgpspec, PROPVARIANT *rgvar)
 717 {
 718     STATPROPSETSTG stat;
 719     HRESULT hres;
 720
 721     FIXME("%p %u %u %p %p\n", pps, uCodePage, cpspec, rgpspec, rgvar);
 722
 723     memset(rgvar, 0, cpspec*sizeof(PROPVARIANT));
 724     hres = IPropertyStorage_ReadMultiple(pps, cpspec, rgpspec, rgvar);
 725     if(FAILED(hres))
 726         return hres;
 727
 728     if(!uCodePage) {
 729         PROPSPEC prop;
 730         PROPVARIANT ret;
 731
 732         prop.ulKind = PRSPEC_PROPID;
 733         prop.u.propid = PID_CODEPAGE;
 734         hres = IPropertyStorage_ReadMultiple(pps, 1, &prop, &ret);
 735         if(FAILED(hres) || ret.vt!=VT_I2)
 736             return S_OK;
 737
 738         uCodePage = ret.u.iVal;
 739     }
 740
 741     hres = IPropertyStorage_Stat(pps, &stat);
 742     if(FAILED(hres))
 743         return S_OK;
 744
 745     /* TODO: do something with codepage and stat */
 746     return S_OK;
 747 }
 748
 749 /*************************************************************************
 750  *  SHPropStgWriteMultiple      [SHELL32.689]
 751  */
 752 HRESULT WINAPI SHPropStgWriteMultiple(IPropertyStorage *pps, UINT *uCodePage,
 753         ULONG cpspec, const PROPSPEC *rgpspec, PROPVARIANT *rgvar, PROPID propidNameFirst)
 754 {
 755     STATPROPSETSTG stat;
 756     UINT codepage;
 757     HRESULT hres;
 758
 759     FIXME("%p %p %u %p %p %d\n", pps, uCodePage, cpspec, rgpspec, rgvar, propidNameFirst);
 760
 761     hres = IPropertyStorage_Stat(pps, &stat);
 762     if(FAILED(hres))
 763         return hres;
 764
 765     if(uCodePage && *uCodePage)
 766         codepage = *uCodePage;
 767     else {
 768         PROPSPEC prop;
 769         PROPVARIANT ret;
 770
 771         prop.ulKind = PRSPEC_PROPID;
 772         prop.u.propid = PID_CODEPAGE;
 773         hres = IPropertyStorage_ReadMultiple(pps, 1, &prop, &ret);
 774         if(FAILED(hres))
 775             return hres;
 776         if(ret.vt!=VT_I2 || !ret.u.iVal)
 777             return E_FAIL;
 778
 779         codepage = ret.u.iVal;
 780         if(uCodePage)
 781             *uCodePage = codepage;
 782     }
 783
 784     /* TODO: do something with codepage and stat */
 785
 786     hres = IPropertyStorage_WriteMultiple(pps, cpspec, rgpspec, rgvar, propidNameFirst);
 787     return hres;
 788 }