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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  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
  30 #include "windef.h"
  31 #include "winbase.h"
  32 #include "shellapi.h"
  33 #include "wingdi.h"
  34 #include "winuser.h"
  35 #include "shlobj.h"
  36 #include "shlguid.h"
  37 #include "winreg.h"
  38 #include "winerror.h"
  39
  40 #include "undocshell.h"
  41 #include "wine/unicode.h"
  42 #include "shell32_main.h"
  43
  44 #include "wine/debug.h"
  45 #include "shlwapi.h"
  46 #include "debughlp.h"
  47
  48 WINE_DEFAULT_DEBUG_CHANNEL(shell);
  49
  50 extern HRESULT WINAPI IFSFolder_Constructor(IUnknown * pUnkOuter, REFIID riid, LPVOID * ppv);
  51
  52 const WCHAR sShell32[12] = {'S','H','E','L','L','3','2','.','D','L','L','\0'};
  53 const WCHAR sOLE32[10] = {'O','L','E','3','2','.','D','L','L','\0'};
  54
  55 HINSTANCE hShellOle32 = 0;
  56 /**************************************************************************
  57  * Default ClassFactory types
  58  */
  59 typedef HRESULT (CALLBACK *LPFNCREATEINSTANCE)(IUnknown* pUnkOuter, REFIID riid, LPVOID* ppvObject);
  60 IClassFactory * IDefClF_fnConstructor(LPFNCREATEINSTANCE lpfnCI, PLONG pcRefDll, REFIID riidInst);
  61
  62 /* this table contains all CLSID's of shell32 objects */
  63 struct {
  64         REFIID                  riid;
  65         LPFNCREATEINSTANCE      lpfnCI;
  66 } InterfaceTable[] = {
  67         {&CLSID_ShellFSFolder,  &IFSFolder_Constructor},
  68         {&CLSID_MyComputer,     &ISF_MyComputer_Constructor},
  69         {&CLSID_ShellDesktop,   &ISF_Desktop_Constructor},
  70         {&CLSID_ShellLink,      &IShellLink_Constructor},
  71         {&CLSID_DragDropHelper, &IDropTargetHelper_Constructor},
  72         {&CLSID_ControlPanel,   &IControlPanel_Constructor},
  73         {&CLSID_AutoComplete,   &IAutoComplete_Constructor},
  74         {&CLSID_UnixFolder,     &UnixFolder_Constructor},
  75         {&CLSID_UnixDosFolder,  &UnixDosFolder_Constructor},
  76         {&CLSID_FolderShortcut, &FolderShortcut_Constructor},
  77         {NULL,NULL}
  78 };
  79
  80 /*************************************************************************
  81  * SHCoCreateInstance [SHELL32.102]
  82  *
  83  * NOTES
  84  *     exported by ordinal
  85  */
  86
  87 /* FIXME: this should be SHLWAPI.24 since we can't yet import by ordinal */
  88
  89 DWORD WINAPI __SHGUIDToStringW (REFGUID guid, LPWSTR str)
  90 {
  91     WCHAR sFormat[52] = {'{','%','0','8','l','x','-','%','0','4',
  92                          'x','-','%','0','4','x','-','%','0','2',
  93                          'x','%','0','2','x','-','%','0','2','x',
  94                          '%','0','2','x','%','0','2','x','%','0',
  95                          '2','x','%','0','2','x','%','0','2','x',
  96                          '}','\0'};
  97
  98     return wsprintfW ( str, sFormat,
  99              guid->Data1, guid->Data2, guid->Data3,
 100              guid->Data4[0], guid->Data4[1], guid->Data4[2], guid->Data4[3],
 101              guid->Data4[4], guid->Data4[5], guid->Data4[6], guid->Data4[7] );
 102
 103 }
 104
 105 /************************************************************************/
 106
 107 HRESULT WINAPI SHCoCreateInstance(
 108         LPCWSTR aclsid,
 109         const CLSID *clsid,
 110         LPUNKNOWN pUnkOuter,
 111         REFIID refiid,
 112         LPVOID *ppv)
 113 {
 114         DWORD   hres;
 115         IID     iid;
 116         CLSID * myclsid = (CLSID*)clsid;
 117         WCHAR   sKeyName[MAX_PATH];
 118         const   WCHAR sCLSID[7] = {'C','L','S','I','D','\\','\0'};
 119         WCHAR   sClassID[60];
 120         const WCHAR sInProcServer32[16] ={'\\','I','n','p','r','o','c','S','e','r','v','e','r','3','2','\0'};
 121         const WCHAR sLoadWithoutCOM[15] ={'L','o','a','d','W','i','t','h','o','u','t','C','O','M','\0'};
 122         WCHAR   sDllPath[MAX_PATH];
 123         HKEY    hKey;
 124         DWORD   dwSize;
 125         BOOLEAN bLoadFromShell32 = FALSE;
 126         BOOLEAN bLoadWithoutCOM = FALSE;
 127         IClassFactory * pcf = NULL;
 128
 129         if(!ppv) return E_POINTER;
 130         *ppv=NULL;
 131
 132         /* if the clsid is a string, convert it */
 133         if (!clsid)
 134         {
 135           if (!aclsid) return REGDB_E_CLASSNOTREG;
 136           SHCLSIDFromStringW(aclsid, &iid);
 137           myclsid = &iid;
 138         }
 139
 140         TRACE("(%p,%s,unk:%p,%s,%p)\n",
 141                 aclsid,shdebugstr_guid(myclsid),pUnkOuter,shdebugstr_guid(refiid),ppv);
 142
 143         /* we look up the dll path in the registry */
 144         __SHGUIDToStringW(myclsid, sClassID);
 145         lstrcpyW(sKeyName, sCLSID);
 146         lstrcatW(sKeyName, sClassID);
 147         lstrcatW(sKeyName, sInProcServer32);
 148
 149         if (ERROR_SUCCESS == RegOpenKeyExW(HKEY_CLASSES_ROOT, sKeyName, 0, KEY_READ, &hKey)) {
 150             dwSize = sizeof(sDllPath);
 151             SHQueryValueExW(hKey, NULL, 0,0, sDllPath, &dwSize );
 152
 153             /* if a special registry key is set, we load a shell extension without help of OLE32 */
 154             bLoadWithoutCOM = (ERROR_SUCCESS == SHQueryValueExW(hKey, sLoadWithoutCOM, 0, 0, 0, 0));
 155
 156             /* if the com object is inside shell32, omit use of ole32 */
 157             bLoadFromShell32 = (0==lstrcmpiW( PathFindFileNameW(sDllPath), sShell32));
 158
 159             RegCloseKey (hKey);
 160         } else {
 161             /* since we can't find it in the registry we try internally */
 162             bLoadFromShell32 = TRUE;
 163         }
 164
 165         TRACE("WithoutCom=%u FromShell=%u\n", bLoadWithoutCOM, bLoadFromShell32);
 166
 167         /* now we create an instance */
 168         if (bLoadFromShell32) {
 169             if (! SUCCEEDED(DllGetClassObject(myclsid, &IID_IClassFactory,(LPVOID*)&pcf))) {
 170                 ERR("LoadFromShell failed for CLSID=%s\n", shdebugstr_guid(myclsid));
 171             }
 172         } else if (bLoadWithoutCOM) {
 173
 174             /* load an external dll without ole32 */
 175             HANDLE hLibrary;
 176             typedef HRESULT (CALLBACK *DllGetClassObjectFunc)(REFCLSID clsid, REFIID iid, LPVOID *ppv);
 177             DllGetClassObjectFunc DllGetClassObject;
 178
 179             if ((hLibrary = LoadLibraryExW(sDllPath, 0, LOAD_WITH_ALTERED_SEARCH_PATH)) == 0) {
 180                 ERR("couldn't load InprocServer32 dll %s\n", debugstr_w(sDllPath));
 181                 hres = E_ACCESSDENIED;
 182                 goto end;
 183             } else if (!(DllGetClassObject = (DllGetClassObjectFunc)GetProcAddress(hLibrary, "DllGetClassObject"))) {
 184                 ERR("couldn't find function DllGetClassObject in %s\n", debugstr_w(sDllPath));
 185                 FreeLibrary( hLibrary );
 186                 hres = E_ACCESSDENIED;
 187                 goto end;
 188             } else if (! SUCCEEDED(hres = DllGetClassObject(myclsid, &IID_IClassFactory, (LPVOID*)&pcf))) {
 189                     TRACE("GetClassObject failed 0x%08lx\n", hres);
 190                     goto end;
 191             }
 192
 193         } else {
 194
 195             /* load an external dll in the usual way */
 196             hres = CoCreateInstance(myclsid, pUnkOuter, CLSCTX_INPROC_SERVER, refiid, ppv);
 197             goto end;
 198         }
 199
 200         /* here we should have a ClassFactory */
 201         if (!pcf) return E_ACCESSDENIED;
 202
 203         hres = IClassFactory_CreateInstance(pcf, pUnkOuter, refiid, ppv);
 204         IClassFactory_Release(pcf);
 205 end:
 206         if(hres!=S_OK)
 207         {
 208           ERR("failed (0x%08lx) to create CLSID:%s IID:%s\n",
 209               hres, shdebugstr_guid(myclsid), shdebugstr_guid(refiid));
 210           ERR("class not found in registry\n");
 211         }
 212
 213         TRACE("-- instance: %p\n",*ppv);
 214         return hres;
 215 }
 216
 217 /*************************************************************************
 218  * DllGetClassObject   [SHELL32.@]
 219  */
 220 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID iid, LPVOID *ppv)
 221 {
 222         HRESULT hres = E_OUTOFMEMORY;
 223         IClassFactory * pcf = NULL;
 224         int i;
 225
 226         TRACE("CLSID:%s,IID:%s\n",shdebugstr_guid(rclsid),shdebugstr_guid(iid));
 227
 228         if (!ppv) return E_INVALIDARG;
 229         *ppv = NULL;
 230
 231         /* search our internal interface table */
 232         for(i=0;InterfaceTable[i].riid;i++) {
 233             if(IsEqualIID(InterfaceTable[i].riid, rclsid)) {
 234                 TRACE("index[%u]\n", i);
 235                 pcf = IDefClF_fnConstructor(InterfaceTable[i].lpfnCI, NULL, NULL);
 236             }
 237         }
 238
 239         if (!pcf) {
 240             FIXME("failed for CLSID=%s\n", shdebugstr_guid(rclsid));
 241             return CLASS_E_CLASSNOTAVAILABLE;
 242         }
 243
 244         hres = IClassFactory_QueryInterface(pcf, iid, ppv);
 245         IClassFactory_Release(pcf);
 246
 247         TRACE("-- pointer to class factory: %p\n",*ppv);
 248         return hres;
 249 }
 250
 251 /*************************************************************************
 252  * SHCLSIDFromString                            [SHELL32.147]
 253  *
 254  * NOTES
 255  *     exported by ordinal
 256  */
 257 DWORD WINAPI SHCLSIDFromStringA (LPCSTR clsid, CLSID *id)
 258 {
 259     WCHAR buffer[40];
 260     TRACE("(%p(%s) %p)\n", clsid, clsid, id);
 261     if (!MultiByteToWideChar( CP_ACP, 0, clsid, -1, buffer, sizeof(buffer)/sizeof(WCHAR) ))
 262         return CO_E_CLASSSTRING;
 263     return CLSIDFromString( buffer, id );
 264 }
 265 DWORD WINAPI SHCLSIDFromStringW (LPCWSTR clsid, CLSID *id)
 266 {
 267         TRACE("(%p(%s) %p)\n", clsid, debugstr_w(clsid), id);
 268         return CLSIDFromString((LPWSTR)clsid, id);
 269 }
 270 DWORD WINAPI SHCLSIDFromStringAW (LPVOID clsid, CLSID *id)
 271 {
 272         if (SHELL_OsIsUnicode())
 273           return SHCLSIDFromStringW (clsid, id);
 274         return SHCLSIDFromStringA (clsid, id);
 275 }
 276
 277 /*************************************************************************
 278  *      Shell Memory Allocator
 279  */
 280
 281 /* set the vtable later */
 282 static const IMallocVtbl VT_Shell_IMalloc32;
 283
 284 /* this is the static object instance */
 285 typedef struct {
 286         const IMallocVtbl *lpVtbl;
 287         DWORD dummy;
 288 } _ShellMalloc;
 289
 290 static _ShellMalloc Shell_Malloc = { &VT_Shell_IMalloc32,1};
 291
 292 /* this is the global allocator of shell32 */
 293 static IMalloc * ShellTaskAllocator = NULL;
 294
 295 /******************************************************************************
 296  *              IShellMalloc_QueryInterface        [VTABLE]
 297  */
 298 static HRESULT WINAPI IShellMalloc_fnQueryInterface(LPMALLOC iface, REFIID refiid, LPVOID *obj)
 299 {
 300         TRACE("(%s,%p)\n",shdebugstr_guid(refiid),obj);
 301         if (IsEqualIID(refiid, &IID_IUnknown) || IsEqualIID(refiid, &IID_IMalloc)) {
 302                 *obj = (LPMALLOC) &Shell_Malloc;
 303                 return S_OK;
 304         }
 305         return E_NOINTERFACE;
 306 }
 307
 308 /******************************************************************************
 309  *              IShellMalloc_AddRefRelease        [VTABLE]
 310  */
 311 static ULONG WINAPI IShellMalloc_fnAddRefRelease(LPMALLOC iface)
 312 {
 313         return 1;
 314 }
 315
 316 /******************************************************************************
 317  *              IShellMalloc_Alloc [VTABLE]
 318  */
 319 static LPVOID WINAPI IShellMalloc_fnAlloc(LPMALLOC iface, DWORD cb)
 320 {
 321         LPVOID addr;
 322
 323         addr = (LPVOID) LocalAlloc(LMEM_ZEROINIT, cb);
 324         TRACE("(%p,%ld);\n",addr,cb);
 325         return addr;
 326 }
 327
 328 /******************************************************************************
 329  *              IShellMalloc_Realloc [VTABLE]
 330  */
 331 static LPVOID WINAPI IShellMalloc_fnRealloc(LPMALLOC iface, LPVOID pv, DWORD cb)
 332 {
 333         LPVOID addr;
 334
 335         if (pv) {
 336                 if (cb) {
 337                         addr = (LPVOID) LocalReAlloc((HANDLE) pv, cb, LMEM_ZEROINIT | LMEM_MOVEABLE);
 338                 } else {
 339                         LocalFree((HANDLE) pv);
 340                         addr = NULL;
 341                 }
 342         } else {
 343                 if (cb) {
 344                         addr = (LPVOID) LocalAlloc(LMEM_ZEROINIT, cb);
 345                 } else {
 346                         addr = NULL;
 347                 }
 348         }
 349
 350         TRACE("(%p->%p,%ld)\n",pv,addr,cb);
 351         return addr;
 352 }
 353
 354 /******************************************************************************
 355  *              IShellMalloc_Free [VTABLE]
 356  */
 357 static VOID WINAPI IShellMalloc_fnFree(LPMALLOC iface, LPVOID pv)
 358 {
 359         TRACE("(%p)\n",pv);
 360         LocalFree((HANDLE) pv);
 361 }
 362
 363 /******************************************************************************
 364  *              IShellMalloc_GetSize [VTABLE]
 365  */
 366 static DWORD WINAPI IShellMalloc_fnGetSize(LPMALLOC iface, LPVOID pv)
 367 {
 368         DWORD cb = (DWORD) LocalSize((HANDLE)pv);
 369         TRACE("(%p,%ld)\n", pv, cb);
 370         return cb;
 371 }
 372
 373 /******************************************************************************
 374  *              IShellMalloc_DidAlloc [VTABLE]
 375  */
 376 static INT WINAPI IShellMalloc_fnDidAlloc(LPMALLOC iface, LPVOID pv)
 377 {
 378         TRACE("(%p)\n",pv);
 379         return -1;
 380 }
 381
 382 /******************************************************************************
 383  *              IShellMalloc_HeapMinimize [VTABLE]
 384  */
 385 static VOID WINAPI IShellMalloc_fnHeapMinimize(LPMALLOC iface)
 386 {
 387         TRACE("()\n");
 388 }
 389
 390 static const IMallocVtbl VT_Shell_IMalloc32 =
 391 {
 392         IShellMalloc_fnQueryInterface,
 393         IShellMalloc_fnAddRefRelease,
 394         IShellMalloc_fnAddRefRelease,
 395         IShellMalloc_fnAlloc,
 396         IShellMalloc_fnRealloc,
 397         IShellMalloc_fnFree,
 398         IShellMalloc_fnGetSize,
 399         IShellMalloc_fnDidAlloc,
 400         IShellMalloc_fnHeapMinimize
 401 };
 402
 403 /*************************************************************************
 404  *                       SHGetMalloc                    [SHELL32.@]
 405  *
 406  * Return the shell IMalloc interface.
 407  *
 408  * PARAMS
 409  *  lpmal [O] Destination for IMalloc interface.
 410  *
 411  * RETURNS
 412  *  Success: S_OK. lpmal contains the shells IMalloc interface.
 413  *  Failure. An HRESULT error code.
 414  *
 415  * NOTES
 416  *  This function will use CoGetMalloc() if OLE32.DLL is already loaded.
 417  *  If not it uses an internal implementation as a fallback.
 418  */
 419 HRESULT WINAPI SHGetMalloc(LPMALLOC *lpmal)
 420 {
 421         TRACE("(%p)\n", lpmal);
 422
 423         if (!ShellTaskAllocator)
 424         {
 425                 HMODULE hOle32 = GetModuleHandleA("OLE32.DLL");
 426                 /* this is very suspect. we should not being using a different
 427                  * allocator from deallocator based on something undeterministic
 428                  * like whether ole32 is loaded. as it happens currently, they
 429                  * both map to the same allocator deep down, but this could
 430                  * change in the future. */
 431                 if(hOle32) {
 432                         CoGetMalloc(MEMCTX_TASK, &ShellTaskAllocator);
 433                         TRACE("got ole32 IMalloc\n");
 434                 }
 435                 if(!ShellTaskAllocator) {
 436                         ShellTaskAllocator = (IMalloc* ) &Shell_Malloc;
 437                         TRACE("use fallback allocator\n");
 438                 }
 439         }
 440         *lpmal = ShellTaskAllocator;
 441         return  S_OK;
 442 }
 443
 444 /*************************************************************************
 445  * SHAlloc                                      [SHELL32.196]
 446  *
 447  * NOTES
 448  *     exported by ordinal
 449  */
 450 LPVOID WINAPI SHAlloc(DWORD len)
 451 {
 452         IMalloc * ppv;
 453         LPBYTE ret;
 454
 455         if (!ShellTaskAllocator) SHGetMalloc(&ppv);
 456
 457         ret = (LPVOID) IMalloc_Alloc(ShellTaskAllocator, len);
 458         TRACE("%lu bytes at %p\n",len, ret);
 459         return (LPVOID)ret;
 460 }
 461
 462 /*************************************************************************
 463  * SHFree                                       [SHELL32.195]
 464  *
 465  * NOTES
 466  *     exported by ordinal
 467  */
 468 void WINAPI SHFree(LPVOID pv)
 469 {
 470         IMalloc * ppv;
 471
 472         TRACE("%p\n",pv);
 473         if (!ShellTaskAllocator) SHGetMalloc(&ppv);
 474         IMalloc_Free(ShellTaskAllocator, pv);
 475 }
 476
 477 /*************************************************************************
 478  * SHGetDesktopFolder                   [SHELL32.@]
 479  */
 480 HRESULT WINAPI SHGetDesktopFolder(IShellFolder **psf)
 481 {
 482         HRESULT hres = S_OK;
 483         TRACE("\n");
 484
 485         if(!psf) return E_INVALIDARG;
 486         *psf = NULL;
 487         hres = ISF_Desktop_Constructor(NULL, &IID_IShellFolder,(LPVOID*)psf);
 488
 489         TRACE("-- %p->(%p)\n",psf, *psf);
 490         return hres;
 491 }
 492 /**************************************************************************
 493  * Default ClassFactory Implementation
 494  *
 495  * SHCreateDefClassObject
 496  *
 497  * NOTES
 498  *  Helper function for dlls without their own classfactory.
 499  *  A generic classfactory is returned.
 500  *  When the CreateInstance of the cf is called the callback is executed.
 501  */
 502
 503 typedef struct
 504 {
 505     const IClassFactoryVtbl    *lpVtbl;
 506     LONG                        ref;
 507     CLSID                       *rclsid;
 508     LPFNCREATEINSTANCE          lpfnCI;
 509     const IID *                 riidInst;
 510     LONG *                      pcRefDll; /* pointer to refcounter in external dll (ugrrr...) */
 511 } IDefClFImpl;
 512
 513 static const IClassFactoryVtbl dclfvt;
 514
 515 /**************************************************************************
 516  *  IDefClF_fnConstructor
 517  */
 518
 519 IClassFactory * IDefClF_fnConstructor(LPFNCREATEINSTANCE lpfnCI, PLONG pcRefDll, REFIID riidInst)
 520 {
 521         IDefClFImpl* lpclf;
 522
 523         lpclf = HeapAlloc(GetProcessHeap(),0,sizeof(IDefClFImpl));
 524         lpclf->ref = 1;
 525         lpclf->lpVtbl = &dclfvt;
 526         lpclf->lpfnCI = lpfnCI;
 527         lpclf->pcRefDll = pcRefDll;
 528
 529         if (pcRefDll) InterlockedIncrement(pcRefDll);
 530         lpclf->riidInst = riidInst;
 531
 532         TRACE("(%p)%s\n",lpclf, shdebugstr_guid(riidInst));
 533         return (LPCLASSFACTORY)lpclf;
 534 }
 535 /**************************************************************************
 536  *  IDefClF_fnQueryInterface
 537  */
 538 static HRESULT WINAPI IDefClF_fnQueryInterface(
 539   LPCLASSFACTORY iface, REFIID riid, LPVOID *ppvObj)
 540 {
 541         IDefClFImpl *This = (IDefClFImpl *)iface;
 542
 543         TRACE("(%p)->(%s)\n",This,shdebugstr_guid(riid));
 544
 545         *ppvObj = NULL;
 546
 547         if(IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IClassFactory)) {
 548           *ppvObj = This;
 549           InterlockedIncrement(&This->ref);
 550           return S_OK;
 551         }
 552
 553         TRACE("-- E_NOINTERFACE\n");
 554         return E_NOINTERFACE;
 555 }
 556 /******************************************************************************
 557  * IDefClF_fnAddRef
 558  */
 559 static ULONG WINAPI IDefClF_fnAddRef(LPCLASSFACTORY iface)
 560 {
 561         IDefClFImpl *This = (IDefClFImpl *)iface;
 562         ULONG refCount = InterlockedIncrement(&This->ref);
 563
 564         TRACE("(%p)->(count=%lu)\n", This, refCount - 1);
 565
 566         return refCount;
 567 }
 568 /******************************************************************************
 569  * IDefClF_fnRelease
 570  */
 571 static ULONG WINAPI IDefClF_fnRelease(LPCLASSFACTORY iface)
 572 {
 573         IDefClFImpl *This = (IDefClFImpl *)iface;
 574         ULONG refCount = InterlockedDecrement(&This->ref);
 575
 576         TRACE("(%p)->(count=%lu)\n", This, refCount + 1);
 577
 578         if (!refCount)
 579         {
 580           if (This->pcRefDll) InterlockedDecrement(This->pcRefDll);
 581
 582           TRACE("-- destroying IClassFactory(%p)\n",This);
 583           HeapFree(GetProcessHeap(),0,This);
 584           return 0;
 585         }
 586         return refCount;
 587 }
 588 /******************************************************************************
 589  * IDefClF_fnCreateInstance
 590  */
 591 static HRESULT WINAPI IDefClF_fnCreateInstance(
 592   LPCLASSFACTORY iface, LPUNKNOWN pUnkOuter, REFIID riid, LPVOID *ppvObject)
 593 {
 594         IDefClFImpl *This = (IDefClFImpl *)iface;
 595
 596         TRACE("%p->(%p,%s,%p)\n",This,pUnkOuter,shdebugstr_guid(riid),ppvObject);
 597
 598         *ppvObject = NULL;
 599
 600         if ( This->riidInst==NULL ||
 601              IsEqualCLSID(riid, This->riidInst) ||
 602              IsEqualCLSID(riid, &IID_IUnknown) )
 603         {
 604           return This->lpfnCI(pUnkOuter, riid, ppvObject);
 605         }
 606
 607         ERR("unknown IID requested %s\n",shdebugstr_guid(riid));
 608         return E_NOINTERFACE;
 609 }
 610 /******************************************************************************
 611  * IDefClF_fnLockServer
 612  */
 613 static HRESULT WINAPI IDefClF_fnLockServer(LPCLASSFACTORY iface, BOOL fLock)
 614 {
 615         IDefClFImpl *This = (IDefClFImpl *)iface;
 616         TRACE("%p->(0x%x), not implemented\n",This, fLock);
 617         return E_NOTIMPL;
 618 }
 619
 620 static const IClassFactoryVtbl dclfvt =
 621 {
 622     IDefClF_fnQueryInterface,
 623     IDefClF_fnAddRef,
 624   IDefClF_fnRelease,
 625   IDefClF_fnCreateInstance,
 626   IDefClF_fnLockServer
 627 };
 628
 629 /******************************************************************************
 630  * SHCreateDefClassObject                       [SHELL32.70]
 631  */
 632 HRESULT WINAPI SHCreateDefClassObject(
 633         REFIID  riid,
 634         LPVOID* ppv,
 635         LPFNCREATEINSTANCE lpfnCI,      /* [in] create instance callback entry */
 636         LPDWORD pcRefDll,               /* [in/out] ref count of the dll */
 637         REFIID  riidInst)               /* [in] optional interface to the instance */
 638 {
 639         IClassFactory * pcf;
 640
 641         TRACE("%s %p %p %p %s\n",
 642               shdebugstr_guid(riid), ppv, lpfnCI, pcRefDll, shdebugstr_guid(riidInst));
 643
 644         if (! IsEqualCLSID(riid, &IID_IClassFactory) ) return E_NOINTERFACE;
 645         if (! (pcf = IDefClF_fnConstructor(lpfnCI, (PLONG)pcRefDll, riidInst))) return E_OUTOFMEMORY;
 646         *ppv = pcf;
 647         return NOERROR;
 648 }
 649
 650 /*************************************************************************
 651  *  DragAcceptFiles             [SHELL32.@]
 652  */
 653 void WINAPI DragAcceptFiles(HWND hWnd, BOOL b)
 654 {
 655         LONG exstyle;
 656
 657         if( !IsWindow(hWnd) ) return;
 658         exstyle = GetWindowLongA(hWnd,GWL_EXSTYLE);
 659         if (b)
 660           exstyle |= WS_EX_ACCEPTFILES;
 661         else
 662           exstyle &= ~WS_EX_ACCEPTFILES;
 663         SetWindowLongA(hWnd,GWL_EXSTYLE,exstyle);
 664 }
 665
 666 /*************************************************************************
 667  * DragFinish           [SHELL32.@]
 668  */
 669 void WINAPI DragFinish(HDROP h)
 670 {
 671         TRACE("\n");
 672         GlobalFree((HGLOBAL)h);
 673 }
 674
 675 /*************************************************************************
 676  * DragQueryPoint               [SHELL32.@]
 677  */
 678 BOOL WINAPI DragQueryPoint(HDROP hDrop, POINT *p)
 679 {
 680         DROPFILES *lpDropFileStruct;
 681         BOOL bRet;
 682
 683         TRACE("\n");
 684
 685         lpDropFileStruct = (DROPFILES *) GlobalLock(hDrop);
 686
 687         *p = lpDropFileStruct->pt;
 688         bRet = lpDropFileStruct->fNC;
 689
 690         GlobalUnlock(hDrop);
 691         return bRet;
 692 }
 693
 694 /*************************************************************************
 695  *  DragQueryFile               [SHELL32.@]
 696  *  DragQueryFileA              [SHELL32.@]
 697  */
 698 UINT WINAPI DragQueryFileA(
 699         HDROP hDrop,
 700         UINT lFile,
 701         LPSTR lpszFile,
 702         UINT lLength)
 703 {
 704         LPSTR lpDrop;
 705         UINT i = 0;
 706         DROPFILES *lpDropFileStruct = (DROPFILES *) GlobalLock(hDrop);
 707
 708         TRACE("(%p, %x, %p, %u)\n",     hDrop,lFile,lpszFile,lLength);
 709
 710         if(!lpDropFileStruct) goto end;
 711
 712         lpDrop = (LPSTR) lpDropFileStruct + lpDropFileStruct->pFiles;
 713
 714         if(lpDropFileStruct->fWide) {
 715             LPWSTR lpszFileW = NULL;
 716
 717             if(lpszFile) {
 718                 lpszFileW = HeapAlloc(GetProcessHeap(), 0, lLength*sizeof(WCHAR));
 719                 if(lpszFileW == NULL) {
 720                     goto end;
 721                 }
 722             }
 723             i = DragQueryFileW(hDrop, lFile, lpszFileW, lLength);
 724
 725             if(lpszFileW) {
 726                 WideCharToMultiByte(CP_ACP, 0, lpszFileW, -1, lpszFile, lLength, 0, NULL);
 727                 HeapFree(GetProcessHeap(), 0, lpszFileW);
 728             }
 729             goto end;
 730         }
 731
 732         while (i++ < lFile)
 733         {
 734           while (*lpDrop++); /* skip filename */
 735           if (!*lpDrop)
 736           {
 737             i = (lFile == 0xFFFFFFFF) ? i : 0;
 738             goto end;
 739           }
 740         }
 741
 742         i = strlen(lpDrop);
 743         i++;
 744         if (!lpszFile ) goto end;   /* needed buffer size */
 745         i = (lLength > i) ? i : lLength;
 746         lstrcpynA (lpszFile,  lpDrop,  i);
 747 end:
 748         GlobalUnlock(hDrop);
 749         return i;
 750 }
 751
 752 /*************************************************************************
 753  *  DragQueryFileW              [SHELL32.@]
 754  */
 755 UINT WINAPI DragQueryFileW(
 756         HDROP hDrop,
 757         UINT lFile,
 758         LPWSTR lpszwFile,
 759         UINT lLength)
 760 {
 761         LPWSTR lpwDrop;
 762         UINT i = 0;
 763         DROPFILES *lpDropFileStruct = (DROPFILES *) GlobalLock(hDrop);
 764
 765         TRACE("(%p, %x, %p, %u)\n", hDrop,lFile,lpszwFile,lLength);
 766
 767         if(!lpDropFileStruct) goto end;
 768
 769         lpwDrop = (LPWSTR) ((LPSTR)lpDropFileStruct + lpDropFileStruct->pFiles);
 770
 771         if(lpDropFileStruct->fWide == FALSE) {
 772             LPSTR lpszFileA = NULL;
 773
 774             if(lpszwFile) {
 775                 lpszFileA = HeapAlloc(GetProcessHeap(), 0, lLength);
 776                 if(lpszFileA == NULL) {
 777                     goto end;
 778                 }
 779             }
 780             i = DragQueryFileA(hDrop, lFile, lpszFileA, lLength);
 781
 782             if(lpszFileA) {
 783                 MultiByteToWideChar(CP_ACP, 0, lpszFileA, -1, lpszwFile, lLength);
 784                 HeapFree(GetProcessHeap(), 0, lpszFileA);
 785             }
 786             goto end;
 787         }
 788
 789         i = 0;
 790         while (i++ < lFile)
 791         {
 792           while (*lpwDrop++); /* skip filename */
 793           if (!*lpwDrop)
 794           {
 795             i = (lFile == 0xFFFFFFFF) ? i : 0;
 796             goto end;
 797           }
 798         }
 799
 800         i = strlenW(lpwDrop);
 801         i++;
 802         if ( !lpszwFile) goto end;   /* needed buffer size */
 803
 804         i = (lLength > i) ? i : lLength;
 805         lstrcpynW (lpszwFile, lpwDrop, i);
 806 end:
 807         GlobalUnlock(hDrop);
 808         return i;
 809 }