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