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 #include "windef.h"
  29 #include "winbase.h"
  30 #include "shellapi.h"
  31 #include "wingdi.h"
  32 #include "winuser.h"
  33 #include "shlobj.h"
  34 #include "shlguid.h"
  35 #include "winreg.h"
  36 #include "winerror.h"
  37
  38 #include "undocshell.h"
  39 #include "wine/unicode.h"
  40 #include "shell32_main.h"
  41
  42 #include "wine/debug.h"
  43 #include "shlwapi.h"
  44 #include "debughlp.h"
  45
  46 WINE_DEFAULT_DEBUG_CHANNEL(shell);
  47
  48 extern HRESULT WINAPI IFSFolder_Constructor(IUnknown * pUnkOuter, REFIID riid, LPVOID * ppv);
  49
  50 const WCHAR sShell32[12] = {'S','H','E','L','L','3','2','.','D','L','L','\0'};
  51 const WCHAR sOLE32[10] = {'O','L','E','3','2','.','D','L','L','\0'};
  52
  53 HINSTANCE hShellOle32 = 0;
  54 /**************************************************************************
  55  * Default ClassFactory types
  56  */
  57 typedef HRESULT (CALLBACK *LPFNCREATEINSTANCE)(IUnknown* pUnkOuter, REFIID riid, LPVOID* ppvObject);
  58 IClassFactory * IDefClF_fnConstructor(LPFNCREATEINSTANCE lpfnCI, PLONG pcRefDll, REFIID riidInst);
  59
  60 /* this table contains all CLSID's of shell32 objects */
  61 struct {
  62         REFIID                  riid;
  63         LPFNCREATEINSTANCE      lpfnCI;
  64 } InterfaceTable[] = {
  65         {&CLSID_ShellFSFolder,  &IFSFolder_Constructor},
  66         {&CLSID_MyComputer,     &ISF_MyComputer_Constructor},
  67         {&CLSID_ShellDesktop,   &ISF_Desktop_Constructor},
  68         {&CLSID_ShellLink,      &IShellLink_Constructor},
  69         {&CLSID_DragDropHelper, &IDropTargetHelper_Constructor},
  70         {&CLSID_ControlPanel,   &IControlPanel_Constructor},
  71         {NULL,NULL}
  72 };
  73
  74 /*************************************************************************
  75  * __CoCreateInstance [internal]
  76  *
  77  * NOTES
  78  *   wraper for late bound call to OLE32.DLL
  79  *
  80  */
  81 HRESULT (WINAPI *pCoCreateInstance)(REFCLSID rclsid, LPUNKNOWN pUnkOuter, DWORD dwClsContext, REFIID iid, LPVOID *ppv) = NULL;
  82
  83 void * __GetExternalFunc(HMODULE * phModule, LPCWSTR szModuleName, LPCSTR szProcName)
  84 {
  85         if (!*phModule) *phModule = GetModuleHandleW(szModuleName);
  86         if (!*phModule) *phModule = LoadLibraryW(szModuleName);
  87         if (*phModule) return GetProcAddress(*phModule, szProcName);
  88         return NULL;
  89 }
  90
  91 HRESULT  __CoCreateInstance(REFCLSID rclsid, LPUNKNOWN pUnkOuter, DWORD dwClsContext, REFIID iid, LPVOID *ppv)
  92 {
  93         if(!pCoCreateInstance) pCoCreateInstance = __GetExternalFunc(&hShellOle32, sOLE32, "CoCreateInstance");
  94         if(!pCoCreateInstance) return E_FAIL;
  95         return pCoCreateInstance(rclsid, pUnkOuter, dwClsContext, iid, ppv);
  96 }
  97
  98 /*************************************************************************
  99  * SHCoCreateInstance [SHELL32.102]
 100  *
 101  * NOTES
 102  *     exported by ordinal
 103  */
 104
 105 /* FIXME: this should be SHLWAPI.24 since we can't yet import by ordinal */
 106
 107 DWORD WINAPI __SHGUIDToStringW (REFGUID guid, LPWSTR str)
 108 {
 109     WCHAR sFormat[52] = {'{','%','0','8','l','x','-','%','0','4',
 110                          'x','-','%','0','4','x','-','%','0','2',
 111                          'x','%','0','2','x','-','%','0','2','x',
 112                          '%','0','2','x','%','0','2','x','%','0',
 113                          '2','x','%','0','2','x','%','0','2','x',
 114                          '}','\0'};
 115
 116     return wsprintfW ( str, sFormat,
 117              guid->Data1, guid->Data2, guid->Data3,
 118              guid->Data4[0], guid->Data4[1], guid->Data4[2], guid->Data4[3],
 119              guid->Data4[4], guid->Data4[5], guid->Data4[6], guid->Data4[7] );
 120
 121 }
 122
 123 /************************************************************************/
 124
 125 LRESULT WINAPI SHCoCreateInstance(
 126         LPCWSTR aclsid,
 127         const CLSID *clsid,
 128         LPUNKNOWN pUnkOuter,
 129         REFIID refiid,
 130         LPVOID *ppv)
 131 {
 132         DWORD   hres;
 133         IID     iid;
 134         CLSID * myclsid = (CLSID*)clsid;
 135         WCHAR   sKeyName[MAX_PATH];
 136         const   WCHAR sCLSID[7] = {'C','L','S','I','D','\\','\0'};
 137         WCHAR   sClassID[60];
 138         const WCHAR sInProcServer32[16] ={'\\','I','n','p','r','o','c','S','e','r','v','e','r','3','2','\0'};
 139         const WCHAR sLoadWithoutCOM[15] ={'L','o','a','d','W','i','t','h','o','u','t','C','O','M','\0'};
 140         WCHAR   sDllPath[MAX_PATH];
 141         HKEY    hKey;
 142         DWORD   dwSize;
 143         BOOLEAN bLoadFromShell32 = FALSE;
 144         BOOLEAN bLoadWithoutCOM = FALSE;
 145         IClassFactory * pcf = NULL;
 146
 147         if(!ppv) return E_POINTER;
 148         *ppv=NULL;
 149
 150         /* if the clsid is a string, convert it */
 151         if (!clsid)
 152         {
 153           if (!aclsid) return REGDB_E_CLASSNOTREG;
 154           SHCLSIDFromStringW(aclsid, &iid);
 155           myclsid = &iid;
 156         }
 157
 158         TRACE("(%p,%s,unk:%p,%s,%p)\n",
 159                 aclsid,shdebugstr_guid(myclsid),pUnkOuter,shdebugstr_guid(refiid),ppv);
 160
 161         /* we look up the dll path in the registry */
 162         __SHGUIDToStringW(myclsid, sClassID);
 163         lstrcpyW(sKeyName, sCLSID);
 164         lstrcatW(sKeyName, sClassID);
 165         lstrcatW(sKeyName, sInProcServer32);
 166
 167         if (ERROR_SUCCESS == RegOpenKeyExW(HKEY_CLASSES_ROOT, sKeyName, 0, KEY_READ, &hKey)) {
 168             dwSize = sizeof(sDllPath);
 169             SHQueryValueExW(hKey, NULL, 0,0, sDllPath, &dwSize );
 170
 171             /* if a special registry key is set, we load a shell extension without help of OLE32 */
 172             bLoadWithoutCOM = (ERROR_SUCCESS == SHQueryValueExW(hKey, sLoadWithoutCOM, 0, 0, 0, 0));
 173
 174             /* if the com object is inside shell32, omit use of ole32 */
 175             bLoadFromShell32 = (0==lstrcmpiW( PathFindFileNameW(sDllPath), sShell32));
 176
 177             RegCloseKey (hKey);
 178         } else {
 179             /* since we can't find it in the registry we try internally */
 180             bLoadFromShell32 = TRUE;
 181         }
 182
 183         TRACE("WithoutCom=%u FromShell=%u\n", bLoadWithoutCOM, bLoadFromShell32);
 184
 185         /* now we create a instance */
 186         if (bLoadFromShell32) {
 187             if (! SUCCEEDED(SHELL32_DllGetClassObject(myclsid, &IID_IClassFactory,(LPVOID*)&pcf))) {
 188                 ERR("LoadFromShell failed for CLSID=%s\n", shdebugstr_guid(myclsid));
 189             }
 190         } else if (bLoadWithoutCOM) {
 191
 192             /* load a external dll without ole32 */
 193             HANDLE hLibrary;
 194             typedef HRESULT (CALLBACK *DllGetClassObjectFunc)(REFCLSID clsid, REFIID iid, LPVOID *ppv);
 195             DllGetClassObjectFunc DllGetClassObject;
 196
 197             if ((hLibrary = LoadLibraryExW(sDllPath, 0, LOAD_WITH_ALTERED_SEARCH_PATH)) == 0) {
 198                 ERR("couldn't load InprocServer32 dll %s\n", debugstr_w(sDllPath));
 199                 hres = E_ACCESSDENIED;
 200                 goto end;
 201             } else if (!(DllGetClassObject = (DllGetClassObjectFunc)GetProcAddress(hLibrary, "DllGetClassObject"))) {
 202                 ERR("couldn't find function DllGetClassObject in %s\n", debugstr_w(sDllPath));
 203                 FreeLibrary( hLibrary );
 204                 hres = E_ACCESSDENIED;
 205                 goto end;
 206             } else if (! SUCCEEDED(hres = DllGetClassObject(myclsid, &IID_IClassFactory, (LPVOID*)&pcf))) {
 207                     TRACE("GetClassObject failed 0x%08lx\n", hres);
 208                     goto end;
 209             }
 210
 211         } else {
 212
 213             /* load a external dll in the usual way */
 214             hres = __CoCreateInstance(myclsid, pUnkOuter, CLSCTX_INPROC_SERVER, refiid, ppv);
 215             goto end;
 216         }
 217
 218         /* here we should have a ClassFactory */
 219         if (!pcf) return E_ACCESSDENIED;
 220
 221         hres = IClassFactory_CreateInstance(pcf, pUnkOuter, refiid, ppv);
 222         IClassFactory_Release(pcf);
 223 end:
 224         if(hres!=S_OK)
 225         {
 226           ERR("failed (0x%08lx) to create CLSID:%s IID:%s\n",
 227               hres, shdebugstr_guid(myclsid), shdebugstr_guid(refiid));
 228           ERR("class not found in registry\n");
 229         }
 230
 231         TRACE("-- instance: %p\n",*ppv);
 232         return hres;
 233 }
 234
 235 /*************************************************************************
 236  * DllGetClassObject   [SHELL32.128]
 237  */
 238 HRESULT WINAPI SHELL32_DllGetClassObject(REFCLSID rclsid, REFIID iid, LPVOID *ppv)
 239 {
 240         HRESULT hres = E_OUTOFMEMORY;
 241         IClassFactory * pcf = NULL;
 242         int i;
 243
 244         TRACE("CLSID:%s,IID:%s\n",shdebugstr_guid(rclsid),shdebugstr_guid(iid));
 245
 246         if (!ppv) return E_INVALIDARG;
 247         *ppv = NULL;
 248
 249         /* search our internal interface table */
 250         for(i=0;InterfaceTable[i].riid;i++) {
 251             if(IsEqualIID(InterfaceTable[i].riid, rclsid)) {
 252                 TRACE("index[%u]\n", i);
 253                 pcf = IDefClF_fnConstructor(InterfaceTable[i].lpfnCI, NULL, NULL);
 254             }
 255         }
 256
 257         if (!pcf) {
 258             FIXME("failed for CLSID=%s\n", shdebugstr_guid(rclsid));
 259             return CLASS_E_CLASSNOTAVAILABLE;
 260         }
 261
 262         hres = IClassFactory_QueryInterface(pcf, iid, ppv);
 263         IClassFactory_Release(pcf);
 264
 265         TRACE("-- pointer to class factory: %p\n",*ppv);
 266         return hres;
 267 }
 268
 269 /*************************************************************************
 270  * SHCLSIDFromString                            [SHELL32.147]
 271  *
 272  * NOTES
 273  *     exported by ordinal
 274  */
 275 DWORD WINAPI SHCLSIDFromStringA (LPCSTR clsid, CLSID *id)
 276 {
 277     WCHAR buffer[40];
 278     TRACE("(%p(%s) %p)\n", clsid, clsid, id);
 279     if (!MultiByteToWideChar( CP_ACP, 0, clsid, -1, buffer, sizeof(buffer)/sizeof(WCHAR) ))
 280         return CO_E_CLASSSTRING;
 281     return CLSIDFromString( buffer, id );
 282 }
 283 DWORD WINAPI SHCLSIDFromStringW (LPCWSTR clsid, CLSID *id)
 284 {
 285         TRACE("(%p(%s) %p)\n", clsid, debugstr_w(clsid), id);
 286         return CLSIDFromString((LPWSTR)clsid, id);
 287 }
 288 DWORD WINAPI SHCLSIDFromStringAW (LPVOID clsid, CLSID *id)
 289 {
 290         if (SHELL_OsIsUnicode())
 291           return SHCLSIDFromStringW (clsid, id);
 292         return SHCLSIDFromStringA (clsid, id);
 293 }
 294
 295 /*************************************************************************
 296  *      Shell Memory Allocator
 297  */
 298
 299 /* set the vtable later */
 300 extern ICOM_VTABLE(IMalloc) VT_Shell_IMalloc32;
 301
 302 /* this is the static object instance */
 303 typedef struct {
 304         ICOM_VFIELD(IMalloc);
 305         DWORD dummy;
 306 } _ShellMalloc;
 307
 308 _ShellMalloc Shell_Malloc = { &VT_Shell_IMalloc32,1};
 309
 310 /* this is the global allocator of shell32 */
 311 IMalloc * ShellTaskAllocator = NULL;
 312
 313 /******************************************************************************
 314  *              IShellMalloc_QueryInterface        [VTABLE]
 315  */
 316 static HRESULT WINAPI IShellMalloc_fnQueryInterface(LPMALLOC iface, REFIID refiid, LPVOID *obj)
 317 {
 318         TRACE("(%s,%p)\n",shdebugstr_guid(refiid),obj);
 319         if (IsEqualIID(refiid, &IID_IUnknown) || IsEqualIID(refiid, &IID_IMalloc)) {
 320                 *obj = (LPMALLOC) &Shell_Malloc;
 321                 return S_OK;
 322         }
 323         return E_NOINTERFACE;
 324 }
 325
 326 /******************************************************************************
 327  *              IShellMalloc_AddRefRelease        [VTABLE]
 328  */
 329 static ULONG WINAPI IShellMalloc_fnAddRefRelease(LPMALLOC iface)
 330 {
 331         return 1;
 332 }
 333
 334 /******************************************************************************
 335  *              IShellMalloc_Alloc [VTABLE]
 336  */
 337 static LPVOID WINAPI IShellMalloc_fnAlloc(LPMALLOC iface, DWORD cb)
 338 {
 339         LPVOID addr;
 340
 341         addr = (LPVOID) LocalAlloc(GMEM_ZEROINIT, cb);
 342         TRACE("(%p,%ld);\n",addr,cb);
 343         return addr;
 344 }
 345
 346 /******************************************************************************
 347  *              IShellMalloc_Realloc [VTABLE]
 348  */
 349 static LPVOID WINAPI IShellMalloc_fnRealloc(LPMALLOC iface, LPVOID pv, DWORD cb)
 350 {
 351         LPVOID addr;
 352
 353         if (pv) {
 354                 if (cb) {
 355                         addr = (LPVOID) LocalReAlloc((HANDLE) pv, cb, GMEM_ZEROINIT | GMEM_MOVEABLE);
 356                 } else {
 357                         LocalFree((HANDLE) pv);
 358                         addr = NULL;
 359                 }
 360         } else {
 361                 if (cb) {
 362                         addr = (LPVOID) LocalAlloc(GMEM_ZEROINIT, cb);
 363                 } else {
 364                         addr = NULL;
 365                 }
 366         }
 367
 368         TRACE("(%p->%p,%ld)\n",pv,addr,cb);
 369         return addr;
 370 }
 371
 372 /******************************************************************************
 373  *              IShellMalloc_Free [VTABLE]
 374  */
 375 static VOID WINAPI IShellMalloc_fnFree(LPMALLOC iface, LPVOID pv)
 376 {
 377         TRACE("(%p)\n",pv);
 378         LocalFree((HANDLE) pv);
 379 }
 380
 381 /******************************************************************************
 382  *              IShellMalloc_GetSize [VTABLE]
 383  */
 384 static DWORD WINAPI IShellMalloc_fnGetSize(LPMALLOC iface, LPVOID pv)
 385 {
 386         DWORD cb = (DWORD) LocalSize((HANDLE)pv);
 387         TRACE("(%p,%ld)\n", pv, cb);
 388         return cb;
 389 }
 390
 391 /******************************************************************************
 392  *              IShellMalloc_DidAlloc [VTABLE]
 393  */
 394 static INT WINAPI IShellMalloc_fnDidAlloc(LPMALLOC iface, LPVOID pv)
 395 {
 396         TRACE("(%p)\n",pv);
 397         return -1;
 398 }
 399
 400 /******************************************************************************
 401  *              IShellMalloc_HeapMinimize [VTABLE]
 402  */
 403 static VOID WINAPI IShellMalloc_fnHeapMinimize(LPMALLOC iface)
 404 {
 405         TRACE("()\n");
 406 }
 407
 408 static ICOM_VTABLE(IMalloc) VT_Shell_IMalloc32 =
 409 {
 410         ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 411         IShellMalloc_fnQueryInterface,
 412         IShellMalloc_fnAddRefRelease,
 413         IShellMalloc_fnAddRefRelease,
 414         IShellMalloc_fnAlloc,
 415         IShellMalloc_fnRealloc,
 416         IShellMalloc_fnFree,
 417         IShellMalloc_fnGetSize,
 418         IShellMalloc_fnDidAlloc,
 419         IShellMalloc_fnHeapMinimize
 420 };
 421
 422 /*************************************************************************
 423  *                       SHGetMalloc                    [SHELL32.@]
 424  *
 425  * Return the shell IMalloc interface.
 426  *
 427  * PARAMS
 428  *  lpmal [O] Destination for IMalloc interface.
 429  *
 430  * RETURNS
 431  *  Success: S_OK. lpmal contains the shells IMalloc interface.
 432  *  Failure. An HRESULT error code.
 433  *
 434  * NOTES
 435  *  This function will use CoGetMalloc() if OLE32.DLL is already loaded.
 436  *  If not it uses an internal implementation as a fallback.
 437  */
 438 HRESULT WINAPI SHGetMalloc(LPMALLOC *lpmal)
 439 {
 440         HRESULT (WINAPI *pCoGetMalloc)(DWORD,LPMALLOC *);
 441         HMODULE hOle32;
 442
 443         TRACE("(%p)\n", lpmal);
 444
 445         if (!ShellTaskAllocator)
 446         {
 447                 hOle32 = GetModuleHandleA("OLE32.DLL");
 448                 if(hOle32) {
 449                         pCoGetMalloc = (void*) GetProcAddress(hOle32, "CoGetMalloc");
 450                         if (pCoGetMalloc) pCoGetMalloc(MEMCTX_TASK, &ShellTaskAllocator);
 451                         TRACE("got ole32 IMalloc\n");
 452                 }
 453                 if(!ShellTaskAllocator) {
 454                         ShellTaskAllocator = (IMalloc* ) &Shell_Malloc;
 455                         TRACE("use fallback allocator\n");
 456                 }
 457         }
 458         *lpmal = ShellTaskAllocator;
 459         return  S_OK;
 460 }
 461
 462 /*************************************************************************
 463  * SHAlloc                                      [SHELL32.196]
 464  *
 465  * NOTES
 466  *     exported by ordinal
 467  */
 468 LPVOID WINAPI SHAlloc(DWORD len)
 469 {
 470         IMalloc * ppv;
 471         LPBYTE ret;
 472
 473         if (!ShellTaskAllocator) SHGetMalloc(&ppv);
 474
 475         ret = (LPVOID) IMalloc_Alloc(ShellTaskAllocator, len);
 476         TRACE("%lu bytes at %p\n",len, ret);
 477         return (LPVOID)ret;
 478 }
 479
 480 /*************************************************************************
 481  * SHFree                                       [SHELL32.195]
 482  *
 483  * NOTES
 484  *     exported by ordinal
 485  */
 486 void WINAPI SHFree(LPVOID pv)
 487 {
 488         IMalloc * ppv;
 489
 490         TRACE("%p\n",pv);
 491         if (!ShellTaskAllocator) SHGetMalloc(&ppv);
 492         IMalloc_Free(ShellTaskAllocator, pv);
 493 }
 494
 495 /*************************************************************************
 496  * SHGetDesktopFolder                   [SHELL32.@]
 497  */
 498 DWORD WINAPI SHGetDesktopFolder(IShellFolder **psf)
 499 {
 500         HRESULT hres = S_OK;
 501         TRACE("\n");
 502
 503         if(!psf) return E_INVALIDARG;
 504         *psf = NULL;
 505         hres = ISF_Desktop_Constructor(NULL, &IID_IShellFolder,(LPVOID*)psf);
 506
 507         TRACE("-- %p->(%p)\n",psf, *psf);
 508         return hres;
 509 }
 510 /**************************************************************************
 511  * Default ClassFactory Implementation
 512  *
 513  * SHCreateDefClassObject
 514  *
 515  * NOTES
 516  *  helper function for dll's without a own classfactory
 517  *  a generic classfactory is returned
 518  *  when the CreateInstance of the cf is called the callback is executed
 519  */
 520
 521 typedef struct
 522 {
 523     ICOM_VFIELD(IClassFactory);
 524     DWORD                       ref;
 525     CLSID                       *rclsid;
 526     LPFNCREATEINSTANCE          lpfnCI;
 527     const IID *                 riidInst;
 528     ULONG *                     pcRefDll; /* pointer to refcounter in external dll (ugrrr...) */
 529 } IDefClFImpl;
 530
 531 static ICOM_VTABLE(IClassFactory) dclfvt;
 532
 533 /**************************************************************************
 534  *  IDefClF_fnConstructor
 535  */
 536
 537 IClassFactory * IDefClF_fnConstructor(LPFNCREATEINSTANCE lpfnCI, PLONG pcRefDll, REFIID riidInst)
 538 {
 539         IDefClFImpl* lpclf;
 540
 541         lpclf = (IDefClFImpl*)HeapAlloc(GetProcessHeap(),0,sizeof(IDefClFImpl));
 542         lpclf->ref = 1;
 543         lpclf->lpVtbl = &dclfvt;
 544         lpclf->lpfnCI = lpfnCI;
 545         lpclf->pcRefDll = pcRefDll;
 546
 547         if (pcRefDll) InterlockedIncrement(pcRefDll);
 548         lpclf->riidInst = riidInst;
 549
 550         TRACE("(%p)%s\n",lpclf, shdebugstr_guid(riidInst));
 551         return (LPCLASSFACTORY)lpclf;
 552 }
 553 /**************************************************************************
 554  *  IDefClF_fnQueryInterface
 555  */
 556 static HRESULT WINAPI IDefClF_fnQueryInterface(
 557   LPCLASSFACTORY iface, REFIID riid, LPVOID *ppvObj)
 558 {
 559         ICOM_THIS(IDefClFImpl,iface);
 560
 561         TRACE("(%p)->(%s)\n",This,shdebugstr_guid(riid));
 562
 563         *ppvObj = NULL;
 564
 565         if(IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IClassFactory)) {
 566           *ppvObj = This;
 567           InterlockedIncrement(&This->ref);
 568           return S_OK;
 569         }
 570
 571         TRACE("-- E_NOINTERFACE\n");
 572         return E_NOINTERFACE;
 573 }
 574 /******************************************************************************
 575  * IDefClF_fnAddRef
 576  */
 577 static ULONG WINAPI IDefClF_fnAddRef(LPCLASSFACTORY iface)
 578 {
 579         ICOM_THIS(IDefClFImpl,iface);
 580         TRACE("(%p)->(count=%lu)\n",This,This->ref);
 581
 582         return InterlockedIncrement(&This->ref);
 583 }
 584 /******************************************************************************
 585  * IDefClF_fnRelease
 586  */
 587 static ULONG WINAPI IDefClF_fnRelease(LPCLASSFACTORY iface)
 588 {
 589         ICOM_THIS(IDefClFImpl,iface);
 590         TRACE("(%p)->(count=%lu)\n",This,This->ref);
 591
 592         if (!InterlockedDecrement(&This->ref))
 593         {
 594           if (This->pcRefDll) InterlockedDecrement(This->pcRefDll);
 595
 596           TRACE("-- destroying IClassFactory(%p)\n",This);
 597           HeapFree(GetProcessHeap(),0,This);
 598           return 0;
 599         }
 600         return This->ref;
 601 }
 602 /******************************************************************************
 603  * IDefClF_fnCreateInstance
 604  */
 605 static HRESULT WINAPI IDefClF_fnCreateInstance(
 606   LPCLASSFACTORY iface, LPUNKNOWN pUnkOuter, REFIID riid, LPVOID *ppvObject)
 607 {
 608         ICOM_THIS(IDefClFImpl,iface);
 609
 610         TRACE("%p->(%p,%s,%p)\n",This,pUnkOuter,shdebugstr_guid(riid),ppvObject);
 611
 612         *ppvObject = NULL;
 613
 614         if ( This->riidInst==NULL ||
 615              IsEqualCLSID(riid, This->riidInst) ||
 616              IsEqualCLSID(riid, &IID_IUnknown) )
 617         {
 618           return This->lpfnCI(pUnkOuter, riid, ppvObject);
 619         }
 620
 621         ERR("unknown IID requested %s\n",shdebugstr_guid(riid));
 622         return E_NOINTERFACE;
 623 }
 624 /******************************************************************************
 625  * IDefClF_fnLockServer
 626  */
 627 static HRESULT WINAPI IDefClF_fnLockServer(LPCLASSFACTORY iface, BOOL fLock)
 628 {
 629         ICOM_THIS(IDefClFImpl,iface);
 630         TRACE("%p->(0x%x), not implemented\n",This, fLock);
 631         return E_NOTIMPL;
 632 }
 633
 634 static ICOM_VTABLE(IClassFactory) dclfvt =
 635 {
 636     ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 637     IDefClF_fnQueryInterface,
 638     IDefClF_fnAddRef,
 639   IDefClF_fnRelease,
 640   IDefClF_fnCreateInstance,
 641   IDefClF_fnLockServer
 642 };
 643
 644 /******************************************************************************
 645  * SHCreateDefClassObject                       [SHELL32.70]
 646  */
 647 HRESULT WINAPI SHCreateDefClassObject(
 648         REFIID  riid,
 649         LPVOID* ppv,
 650         LPFNCREATEINSTANCE lpfnCI,      /* [in] create instance callback entry */
 651         LPDWORD pcRefDll,               /* [in/out] ref count of the dll */
 652         REFIID  riidInst)               /* [in] optional interface to the instance */
 653 {
 654         IClassFactory * pcf;
 655
 656         TRACE("%s %p %p %p %s\n",
 657               shdebugstr_guid(riid), ppv, lpfnCI, pcRefDll, shdebugstr_guid(riidInst));
 658
 659         if (! IsEqualCLSID(riid, &IID_IClassFactory) ) return E_NOINTERFACE;
 660         if (! (pcf = IDefClF_fnConstructor(lpfnCI, pcRefDll, riidInst))) return E_OUTOFMEMORY;
 661         *ppv = pcf;
 662         return NOERROR;
 663 }
 664
 665 /*************************************************************************
 666  *  DragAcceptFiles             [SHELL32.54]
 667  */
 668 void WINAPI DragAcceptFiles(HWND hWnd, BOOL b)
 669 {
 670         LONG exstyle;
 671
 672         if( !IsWindow(hWnd) ) return;
 673         exstyle = GetWindowLongA(hWnd,GWL_EXSTYLE);
 674         if (b)
 675           exstyle |= WS_EX_ACCEPTFILES;
 676         else
 677           exstyle &= ~WS_EX_ACCEPTFILES;
 678         SetWindowLongA(hWnd,GWL_EXSTYLE,exstyle);
 679 }
 680
 681 /*************************************************************************
 682  * DragFinish           [SHELL32.80]
 683  */
 684 void WINAPI DragFinish(HDROP h)
 685 {
 686         TRACE("\n");
 687         GlobalFree((HGLOBAL)h);
 688 }
 689
 690 /*************************************************************************
 691  * DragQueryPoint               [SHELL32.135]
 692  */
 693 BOOL WINAPI DragQueryPoint(HDROP hDrop, POINT *p)
 694 {
 695         DROPFILES *lpDropFileStruct;
 696         BOOL bRet;
 697
 698         TRACE("\n");
 699
 700         lpDropFileStruct = (DROPFILES *) GlobalLock(hDrop);
 701
 702         *p = lpDropFileStruct->pt;
 703         bRet = lpDropFileStruct->fNC;
 704
 705         GlobalUnlock(hDrop);
 706         return bRet;
 707 }
 708
 709 /*************************************************************************
 710  *  DragQueryFile               [SHELL32.81]
 711  *  DragQueryFileA              [SHELL32.82]
 712  */
 713 UINT WINAPI DragQueryFileA(
 714         HDROP hDrop,
 715         UINT lFile,
 716         LPSTR lpszFile,
 717         UINT lLength)
 718 {
 719         LPSTR lpDrop;
 720         UINT i = 0;
 721         DROPFILES *lpDropFileStruct = (DROPFILES *) GlobalLock(hDrop);
 722
 723         TRACE("(%p, %x, %p, %u)\n",     hDrop,lFile,lpszFile,lLength);
 724
 725         if(!lpDropFileStruct) goto end;
 726
 727         lpDrop = (LPSTR) lpDropFileStruct + lpDropFileStruct->pFiles;
 728
 729         if(lpDropFileStruct->fWide == TRUE) {
 730             LPWSTR lpszFileW = NULL;
 731
 732             if(lpszFile) {
 733                 lpszFileW = (LPWSTR) HeapAlloc(GetProcessHeap(), 0, lLength*sizeof(WCHAR));
 734                 if(lpszFileW == NULL) {
 735                     goto end;
 736                 }
 737             }
 738             i = DragQueryFileW(hDrop, lFile, lpszFileW, lLength);
 739
 740             if(lpszFileW) {
 741                 WideCharToMultiByte(CP_ACP, 0, lpszFileW, -1, lpszFile, lLength, 0, NULL);
 742                 HeapFree(GetProcessHeap(), 0, lpszFileW);
 743             }
 744             goto end;
 745         }
 746
 747         while (i++ < lFile)
 748         {
 749           while (*lpDrop++); /* skip filename */
 750           if (!*lpDrop)
 751           {
 752             i = (lFile == 0xFFFFFFFF) ? i : 0;
 753             goto end;
 754           }
 755         }
 756
 757         i = strlen(lpDrop);
 758         i++;
 759         if (!lpszFile ) goto end;   /* needed buffer size */
 760         i = (lLength > i) ? i : lLength;
 761         lstrcpynA (lpszFile,  lpDrop,  i);
 762 end:
 763         GlobalUnlock(hDrop);
 764         return i;
 765 }
 766
 767 /*************************************************************************
 768  *  DragQueryFileW              [SHELL32.133]
 769  */
 770 UINT WINAPI DragQueryFileW(
 771         HDROP hDrop,
 772         UINT lFile,
 773         LPWSTR lpszwFile,
 774         UINT lLength)
 775 {
 776         LPWSTR lpwDrop;
 777         UINT i = 0;
 778         DROPFILES *lpDropFileStruct = (DROPFILES *) GlobalLock(hDrop);
 779
 780         TRACE("(%p, %x, %p, %u)\n", hDrop,lFile,lpszwFile,lLength);
 781
 782         if(!lpDropFileStruct) goto end;
 783
 784         lpwDrop = (LPWSTR) ((LPSTR)lpDropFileStruct + lpDropFileStruct->pFiles);
 785
 786         if(lpDropFileStruct->fWide == FALSE) {
 787             LPSTR lpszFileA = NULL;
 788
 789             if(lpszwFile) {
 790                 lpszFileA = (LPSTR) HeapAlloc(GetProcessHeap(), 0, lLength);
 791                 if(lpszFileA == NULL) {
 792                     goto end;
 793                 }
 794             }
 795             i = DragQueryFileA(hDrop, lFile, lpszFileA, lLength);
 796
 797             if(lpszFileA) {
 798                 MultiByteToWideChar(CP_ACP, 0, lpszFileA, -1, lpszwFile, lLength);
 799                 HeapFree(GetProcessHeap(), 0, lpszFileA);
 800             }
 801             goto end;
 802         }
 803
 804         i = 0;
 805         while (i++ < lFile)
 806         {
 807           while (*lpwDrop++); /* skip filename */
 808           if (!*lpwDrop)
 809           {
 810             i = (lFile == 0xFFFFFFFF) ? i : 0;
 811             goto end;
 812           }
 813         }
 814
 815         i = strlenW(lpwDrop);
 816         i++;
 817         if ( !lpszwFile) goto end;   /* needed buffer size */
 818
 819         i = (lLength > i) ? i : lLength;
 820         lstrcpynW (lpszwFile, lpwDrop, i);
 821 end:
 822         GlobalUnlock(hDrop);
 823         return i;
 824 }