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