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         {&CLSID_AutoComplete,   &IAutoComplete_Constructor},
  72         {NULL,NULL}
  73 };
  74
  75 /*************************************************************************
  76  * __CoCreateInstance [internal]
  77  *
  78  * NOTES
  79  *   wraper for late bound call to OLE32.DLL
  80  *
  81  */
  82 HRESULT (WINAPI *pCoCreateInstance)(REFCLSID rclsid, LPUNKNOWN pUnkOuter, DWORD dwClsContext, REFIID iid, LPVOID *ppv) = NULL;
  83
  84 void * __GetExternalFunc(HMODULE * phModule, LPCWSTR szModuleName, LPCSTR szProcName)
  85 {
  86         if (!*phModule) *phModule = GetModuleHandleW(szModuleName);
  87         if (!*phModule) *phModule = LoadLibraryW(szModuleName);
  88         if (*phModule) return GetProcAddress(*phModule, szProcName);
  89         return NULL;
  90 }
  91
  92 HRESULT  __CoCreateInstance(REFCLSID rclsid, LPUNKNOWN pUnkOuter, DWORD dwClsContext, REFIID iid, LPVOID *ppv)
  93 {
  94         if(!pCoCreateInstance) pCoCreateInstance = __GetExternalFunc(&hShellOle32, sOLE32, "CoCreateInstance");
  95         if(!pCoCreateInstance) return E_FAIL;
  96         return pCoCreateInstance(rclsid, pUnkOuter, dwClsContext, iid, ppv);
  97 }
  98
  99 /*************************************************************************
 100  * SHCoCreateInstance [SHELL32.102]
 101  *
 102  * NOTES
 103  *     exported by ordinal
 104  */
 105
 106 /* FIXME: this should be SHLWAPI.24 since we can't yet import by ordinal */
 107
 108 DWORD WINAPI __SHGUIDToStringW (REFGUID guid, LPWSTR str)
 109 {
 110     WCHAR sFormat[52] = {'{','%','0','8','l','x','-','%','0','4',
 111                          'x','-','%','0','4','x','-','%','0','2',
 112                          'x','%','0','2','x','-','%','0','2','x',
 113                          '%','0','2','x','%','0','2','x','%','0',
 114                          '2','x','%','0','2','x','%','0','2','x',
 115                          '}','\0'};
 116
 117     return wsprintfW ( str, sFormat,
 118              guid->Data1, guid->Data2, guid->Data3,
 119              guid->Data4[0], guid->Data4[1], guid->Data4[2], guid->Data4[3],
 120              guid->Data4[4], guid->Data4[5], guid->Data4[6], guid->Data4[7] );
 121
 122 }
 123
 124 /************************************************************************/
 125
 126 LRESULT WINAPI SHCoCreateInstance(
 127         LPCWSTR aclsid,
 128         const CLSID *clsid,
 129         LPUNKNOWN pUnkOuter,
 130         REFIID refiid,
 131         LPVOID *ppv)
 132 {
 133         DWORD   hres;
 134         IID     iid;
 135         CLSID * myclsid = (CLSID*)clsid;
 136         WCHAR   sKeyName[MAX_PATH];
 137         const   WCHAR sCLSID[7] = {'C','L','S','I','D','\\','\0'};
 138         WCHAR   sClassID[60];
 139         const WCHAR sInProcServer32[16] ={'\\','I','n','p','r','o','c','S','e','r','v','e','r','3','2','\0'};
 140         const WCHAR sLoadWithoutCOM[15] ={'L','o','a','d','W','i','t','h','o','u','t','C','O','M','\0'};
 141         WCHAR   sDllPath[MAX_PATH];
 142         HKEY    hKey;
 143         DWORD   dwSize;
 144         BOOLEAN bLoadFromShell32 = FALSE;
 145         BOOLEAN bLoadWithoutCOM = FALSE;
 146         IClassFactory * pcf = NULL;
 147
 148         if(!ppv) return E_POINTER;
 149         *ppv=NULL;
 150
 151         /* if the clsid is a string, convert it */
 152         if (!clsid)
 153         {
 154           if (!aclsid) return REGDB_E_CLASSNOTREG;
 155           SHCLSIDFromStringW(aclsid, &iid);
 156           myclsid = &iid;
 157         }
 158
 159         TRACE("(%p,%s,unk:%p,%s,%p)\n",
 160                 aclsid,shdebugstr_guid(myclsid),pUnkOuter,shdebugstr_guid(refiid),ppv);
 161
 162         /* we look up the dll path in the registry */
 163         __SHGUIDToStringW(myclsid, sClassID);
 164         lstrcpyW(sKeyName, sCLSID);
 165         lstrcatW(sKeyName, sClassID);
 166         lstrcatW(sKeyName, sInProcServer32);
 167
 168         if (ERROR_SUCCESS == RegOpenKeyExW(HKEY_CLASSES_ROOT, sKeyName, 0, KEY_READ, &hKey)) {
 169             dwSize = sizeof(sDllPath);
 170             SHQueryValueExW(hKey, NULL, 0,0, sDllPath, &dwSize );
 171
 172             /* if a special registry key is set, we load a shell extension without help of OLE32 */
 173             bLoadWithoutCOM = (ERROR_SUCCESS == SHQueryValueExW(hKey, sLoadWithoutCOM, 0, 0, 0, 0));
 174
 175             /* if the com object is inside shell32, omit use of ole32 */
 176             bLoadFromShell32 = (0==lstrcmpiW( PathFindFileNameW(sDllPath), sShell32));
 177
 178             RegCloseKey (hKey);
 179         } else {
 180             /* since we can't find it in the registry we try internally */
 181             bLoadFromShell32 = TRUE;
 182         }
 183
 184         TRACE("WithoutCom=%u FromShell=%u\n", bLoadWithoutCOM, bLoadFromShell32);
 185
 186         /* now we create a instance */
 187         if (bLoadFromShell32) {
 188             if (! SUCCEEDED(SHELL32_DllGetClassObject(myclsid, &IID_IClassFactory,(LPVOID*)&pcf))) {
 189                 ERR("LoadFromShell failed for CLSID=%s\n", shdebugstr_guid(myclsid));
 190             }
 191         } else if (bLoadWithoutCOM) {
 192
 193             /* load a external dll without ole32 */
 194             HANDLE hLibrary;
 195             typedef HRESULT (CALLBACK *DllGetClassObjectFunc)(REFCLSID clsid, REFIID iid, LPVOID *ppv);
 196             DllGetClassObjectFunc DllGetClassObject;
 197
 198             if ((hLibrary = LoadLibraryExW(sDllPath, 0, LOAD_WITH_ALTERED_SEARCH_PATH)) == 0) {
 199                 ERR("couldn't load InprocServer32 dll %s\n", debugstr_w(sDllPath));
 200                 hres = E_ACCESSDENIED;
 201                 goto end;
 202             } else if (!(DllGetClassObject = (DllGetClassObjectFunc)GetProcAddress(hLibrary, "DllGetClassObject"))) {
 203                 ERR("couldn't find function DllGetClassObject in %s\n", debugstr_w(sDllPath));
 204                 FreeLibrary( hLibrary );
 205                 hres = E_ACCESSDENIED;
 206                 goto end;
 207             } else if (! SUCCEEDED(hres = DllGetClassObject(myclsid, &IID_IClassFactory, (LPVOID*)&pcf))) {
 208                     TRACE("GetClassObject failed 0x%08lx\n", hres);
 209                     goto end;
 210             }
 211
 212         } else {
 213
 214             /* load a external dll in the usual way */
 215             hres = __CoCreateInstance(myclsid, pUnkOuter, CLSCTX_INPROC_SERVER, refiid, ppv);
 216             goto end;
 217         }
 218
 219         /* here we should have a ClassFactory */
 220         if (!pcf) return E_ACCESSDENIED;
 221
 222         hres = IClassFactory_CreateInstance(pcf, pUnkOuter, refiid, ppv);
 223         IClassFactory_Release(pcf);
 224 end:
 225         if(hres!=S_OK)
 226         {
 227           ERR("failed (0x%08lx) to create CLSID:%s IID:%s\n",
 228               hres, shdebugstr_guid(myclsid), shdebugstr_guid(refiid));
 229           ERR("class not found in registry\n");
 230         }
 231
 232         TRACE("-- instance: %p\n",*ppv);
 233         return hres;
 234 }
 235
 236 /*************************************************************************
 237  * DllGetClassObject   [SHELL32.128]
 238  */
 239 HRESULT WINAPI SHELL32_DllGetClassObject(REFCLSID rclsid, REFIID iid, LPVOID *ppv)
 240 {
 241         HRESULT hres = E_OUTOFMEMORY;
 242         IClassFactory * pcf = NULL;
 243         int i;
 244
 245         TRACE("CLSID:%s,IID:%s\n",shdebugstr_guid(rclsid),shdebugstr_guid(iid));
 246
 247         if (!ppv) return E_INVALIDARG;
 248         *ppv = NULL;
 249
 250         /* search our internal interface table */
 251         for(i=0;InterfaceTable[i].riid;i++) {
 252             if(IsEqualIID(InterfaceTable[i].riid, rclsid)) {
 253                 TRACE("index[%u]\n", i);
 254                 pcf = IDefClF_fnConstructor(InterfaceTable[i].lpfnCI, NULL, NULL);
 255             }
 256         }
 257
 258         if (!pcf) {
 259             FIXME("failed for CLSID=%s\n", shdebugstr_guid(rclsid));
 260             return CLASS_E_CLASSNOTAVAILABLE;
 261         }
 262
 263         hres = IClassFactory_QueryInterface(pcf, iid, ppv);
 264         IClassFactory_Release(pcf);
 265
 266         TRACE("-- pointer to class factory: %p\n",*ppv);
 267         return hres;
 268 }
 269
 270 /*************************************************************************
 271  * SHCLSIDFromString                            [SHELL32.147]
 272  *
 273  * NOTES
 274  *     exported by ordinal
 275  */
 276 DWORD WINAPI SHCLSIDFromStringA (LPCSTR clsid, CLSID *id)
 277 {
 278     WCHAR buffer[40];
 279     TRACE("(%p(%s) %p)\n", clsid, clsid, id);
 280     if (!MultiByteToWideChar( CP_ACP, 0, clsid, -1, buffer, sizeof(buffer)/sizeof(WCHAR) ))
 281         return CO_E_CLASSSTRING;
 282     return CLSIDFromString( buffer, id );
 283 }
 284 DWORD WINAPI SHCLSIDFromStringW (LPCWSTR clsid, CLSID *id)
 285 {
 286         TRACE("(%p(%s) %p)\n", clsid, debugstr_w(clsid), id);
 287         return CLSIDFromString((LPWSTR)clsid, id);
 288 }
 289 DWORD WINAPI SHCLSIDFromStringAW (LPVOID clsid, CLSID *id)
 290 {
 291         if (SHELL_OsIsUnicode())
 292           return SHCLSIDFromStringW (clsid, id);
 293         return SHCLSIDFromStringA (clsid, id);
 294 }
 295
 296 /*************************************************************************
 297  *      Shell Memory Allocator
 298  */
 299
 300 /* set the vtable later */
 301 extern ICOM_VTABLE(IMalloc) VT_Shell_IMalloc32;
 302
 303 /* this is the static object instance */
 304 typedef struct {
 305         ICOM_VFIELD(IMalloc);
 306         DWORD dummy;
 307 } _ShellMalloc;
 308
 309 _ShellMalloc Shell_Malloc = { &VT_Shell_IMalloc32,1};
 310
 311 /* this is the global allocator of shell32 */
 312 IMalloc * ShellTaskAllocator = NULL;
 313
 314 /******************************************************************************
 315  *              IShellMalloc_QueryInterface        [VTABLE]
 316  */
 317 static HRESULT WINAPI IShellMalloc_fnQueryInterface(LPMALLOC iface, REFIID refiid, LPVOID *obj)
 318 {
 319         TRACE("(%s,%p)\n",shdebugstr_guid(refiid),obj);
 320         if (IsEqualIID(refiid, &IID_IUnknown) || IsEqualIID(refiid, &IID_IMalloc)) {
 321                 *obj = (LPMALLOC) &Shell_Malloc;
 322                 return S_OK;
 323         }
 324         return E_NOINTERFACE;
 325 }
 326
 327 /******************************************************************************
 328  *              IShellMalloc_AddRefRelease        [VTABLE]
 329  */
 330 static ULONG WINAPI IShellMalloc_fnAddRefRelease(LPMALLOC iface)
 331 {
 332         return 1;
 333 }
 334
 335 /******************************************************************************
 336  *              IShellMalloc_Alloc [VTABLE]
 337  */
 338 static LPVOID WINAPI IShellMalloc_fnAlloc(LPMALLOC iface, DWORD cb)
 339 {
 340         LPVOID addr;
 341
 342         addr = (LPVOID) LocalAlloc(GMEM_ZEROINIT, cb);
 343         TRACE("(%p,%ld);\n",addr,cb);
 344         return addr;
 345 }
 346
 347 /******************************************************************************
 348  *              IShellMalloc_Realloc [VTABLE]
 349  */
 350 static LPVOID WINAPI IShellMalloc_fnRealloc(LPMALLOC iface, LPVOID pv, DWORD cb)
 351 {
 352         LPVOID addr;
 353
 354         if (pv) {
 355                 if (cb) {
 356                         addr = (LPVOID) LocalReAlloc((HANDLE) pv, cb, GMEM_ZEROINIT | GMEM_MOVEABLE);
 357                 } else {
 358                         LocalFree((HANDLE) pv);
 359                         addr = NULL;
 360                 }
 361         } else {
 362                 if (cb) {
 363                         addr = (LPVOID) LocalAlloc(GMEM_ZEROINIT, cb);
 364                 } else {
 365                         addr = NULL;
 366                 }
 367         }
 368
 369         TRACE("(%p->%p,%ld)\n",pv,addr,cb);
 370         return addr;
 371 }
 372
 373 /******************************************************************************
 374  *              IShellMalloc_Free [VTABLE]
 375  */
 376 static VOID WINAPI IShellMalloc_fnFree(LPMALLOC iface, LPVOID pv)
 377 {
 378         TRACE("(%p)\n",pv);
 379         LocalFree((HANDLE) pv);
 380 }
 381
 382 /******************************************************************************
 383  *              IShellMalloc_GetSize [VTABLE]
 384  */
 385 static DWORD WINAPI IShellMalloc_fnGetSize(LPMALLOC iface, LPVOID pv)
 386 {
 387         DWORD cb = (DWORD) LocalSize((HANDLE)pv);
 388         TRACE("(%p,%ld)\n", pv, cb);
 389         return cb;
 390 }
 391
 392 /******************************************************************************
 393  *              IShellMalloc_DidAlloc [VTABLE]
 394  */
 395 static INT WINAPI IShellMalloc_fnDidAlloc(LPMALLOC iface, LPVOID pv)
 396 {
 397         TRACE("(%p)\n",pv);
 398         return -1;
 399 }
 400
 401 /******************************************************************************
 402  *              IShellMalloc_HeapMinimize [VTABLE]
 403  */
 404 static VOID WINAPI IShellMalloc_fnHeapMinimize(LPMALLOC iface)
 405 {
 406         TRACE("()\n");
 407 }
 408
 409 static ICOM_VTABLE(IMalloc) VT_Shell_IMalloc32 =
 410 {
 411         ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 412         IShellMalloc_fnQueryInterface,
 413         IShellMalloc_fnAddRefRelease,
 414         IShellMalloc_fnAddRefRelease,
 415         IShellMalloc_fnAlloc,
 416         IShellMalloc_fnRealloc,
 417         IShellMalloc_fnFree,
 418         IShellMalloc_fnGetSize,
 419         IShellMalloc_fnDidAlloc,
 420         IShellMalloc_fnHeapMinimize
 421 };
 422
 423 /*************************************************************************
 424  *                       SHGetMalloc                    [SHELL32.@]
 425  *
 426  * Return the shell IMalloc interface.
 427  *
 428  * PARAMS
 429  *  lpmal [O] Destination for IMalloc interface.
 430  *
 431  * RETURNS
 432  *  Success: S_OK. lpmal contains the shells IMalloc interface.
 433  *  Failure. An HRESULT error code.
 434  *
 435  * NOTES
 436  *  This function will use CoGetMalloc() if OLE32.DLL is already loaded.
 437  *  If not it uses an internal implementation as a fallback.
 438  */
 439 HRESULT WINAPI SHGetMalloc(LPMALLOC *lpmal)
 440 {
 441         HRESULT (WINAPI *pCoGetMalloc)(DWORD,LPMALLOC *);
 442         HMODULE hOle32;
 443
 444         TRACE("(%p)\n", lpmal);
 445
 446         if (!ShellTaskAllocator)
 447         {
 448                 hOle32 = GetModuleHandleA("OLE32.DLL");
 449                 if(hOle32) {
 450                         pCoGetMalloc = (void*) GetProcAddress(hOle32, "CoGetMalloc");
 451                         if (pCoGetMalloc) pCoGetMalloc(MEMCTX_TASK, &ShellTaskAllocator);
 452                         TRACE("got ole32 IMalloc\n");
 453                 }
 454                 if(!ShellTaskAllocator) {
 455                         ShellTaskAllocator = (IMalloc* ) &Shell_Malloc;
 456                         TRACE("use fallback allocator\n");
 457                 }
 458         }
 459         *lpmal = ShellTaskAllocator;
 460         return  S_OK;
 461 }
 462
 463 /*************************************************************************
 464  * SHAlloc                                      [SHELL32.196]
 465  *
 466  * NOTES
 467  *     exported by ordinal
 468  */
 469 LPVOID WINAPI SHAlloc(DWORD len)
 470 {
 471         IMalloc * ppv;
 472         LPBYTE ret;
 473
 474         if (!ShellTaskAllocator) SHGetMalloc(&ppv);
 475
 476         ret = (LPVOID) IMalloc_Alloc(ShellTaskAllocator, len);
 477         TRACE("%lu bytes at %p\n",len, ret);
 478         return (LPVOID)ret;
 479 }
 480
 481 /*************************************************************************
 482  * SHFree                                       [SHELL32.195]
 483  *
 484  * NOTES
 485  *     exported by ordinal
 486  */
 487 void WINAPI SHFree(LPVOID pv)
 488 {
 489         IMalloc * ppv;
 490
 491         TRACE("%p\n",pv);
 492         if (!ShellTaskAllocator) SHGetMalloc(&ppv);
 493         IMalloc_Free(ShellTaskAllocator, pv);
 494 }
 495
 496 /*************************************************************************
 497  * SHGetDesktopFolder                   [SHELL32.@]
 498  */
 499 DWORD WINAPI SHGetDesktopFolder(IShellFolder **psf)
 500 {
 501         HRESULT hres = S_OK;
 502         TRACE("\n");
 503
 504         if(!psf) return E_INVALIDARG;
 505         *psf = NULL;
 506         hres = ISF_Desktop_Constructor(NULL, &IID_IShellFolder,(LPVOID*)psf);
 507
 508         TRACE("-- %p->(%p)\n",psf, *psf);
 509         return hres;
 510 }
 511 /**************************************************************************
 512  * Default ClassFactory Implementation
 513  *
 514  * SHCreateDefClassObject
 515  *
 516  * NOTES
 517  *  helper function for dll's without a own classfactory
 518  *  a generic classfactory is returned
 519  *  when the CreateInstance of the cf is called the callback is executed
 520  */
 521
 522 typedef struct
 523 {
 524     ICOM_VFIELD(IClassFactory);
 525     DWORD                       ref;
 526     CLSID                       *rclsid;
 527     LPFNCREATEINSTANCE          lpfnCI;
 528     const IID *                 riidInst;
 529     ULONG *                     pcRefDll; /* pointer to refcounter in external dll (ugrrr...) */
 530 } IDefClFImpl;
 531
 532 static ICOM_VTABLE(IClassFactory) dclfvt;
 533
 534 /**************************************************************************
 535  *  IDefClF_fnConstructor
 536  */
 537
 538 IClassFactory * IDefClF_fnConstructor(LPFNCREATEINSTANCE lpfnCI, PLONG pcRefDll, REFIID riidInst)
 539 {
 540         IDefClFImpl* lpclf;
 541
 542         lpclf = (IDefClFImpl*)HeapAlloc(GetProcessHeap(),0,sizeof(IDefClFImpl));
 543         lpclf->ref = 1;
 544         lpclf->lpVtbl = &dclfvt;
 545         lpclf->lpfnCI = lpfnCI;
 546         lpclf->pcRefDll = pcRefDll;
 547
 548         if (pcRefDll) InterlockedIncrement(pcRefDll);
 549         lpclf->riidInst = riidInst;
 550
 551         TRACE("(%p)%s\n",lpclf, shdebugstr_guid(riidInst));
 552         return (LPCLASSFACTORY)lpclf;
 553 }
 554 /**************************************************************************
 555  *  IDefClF_fnQueryInterface
 556  */
 557 static HRESULT WINAPI IDefClF_fnQueryInterface(
 558   LPCLASSFACTORY iface, REFIID riid, LPVOID *ppvObj)
 559 {
 560         ICOM_THIS(IDefClFImpl,iface);
 561
 562         TRACE("(%p)->(%s)\n",This,shdebugstr_guid(riid));
 563
 564         *ppvObj = NULL;
 565
 566         if(IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IClassFactory)) {
 567           *ppvObj = This;
 568           InterlockedIncrement(&This->ref);
 569           return S_OK;
 570         }
 571
 572         TRACE("-- E_NOINTERFACE\n");
 573         return E_NOINTERFACE;
 574 }
 575 /******************************************************************************
 576  * IDefClF_fnAddRef
 577  */
 578 static ULONG WINAPI IDefClF_fnAddRef(LPCLASSFACTORY iface)
 579 {
 580         ICOM_THIS(IDefClFImpl,iface);
 581         TRACE("(%p)->(count=%lu)\n",This,This->ref);
 582
 583         return InterlockedIncrement(&This->ref);
 584 }
 585 /******************************************************************************
 586  * IDefClF_fnRelease
 587  */
 588 static ULONG WINAPI IDefClF_fnRelease(LPCLASSFACTORY iface)
 589 {
 590         ICOM_THIS(IDefClFImpl,iface);
 591         TRACE("(%p)->(count=%lu)\n",This,This->ref);
 592
 593         if (!InterlockedDecrement(&This->ref))
 594         {
 595           if (This->pcRefDll) InterlockedDecrement(This->pcRefDll);
 596
 597           TRACE("-- destroying IClassFactory(%p)\n",This);
 598           HeapFree(GetProcessHeap(),0,This);
 599           return 0;
 600         }
 601         return This->ref;
 602 }
 603 /******************************************************************************
 604  * IDefClF_fnCreateInstance
 605  */
 606 static HRESULT WINAPI IDefClF_fnCreateInstance(
 607   LPCLASSFACTORY iface, LPUNKNOWN pUnkOuter, REFIID riid, LPVOID *ppvObject)
 608 {
 609         ICOM_THIS(IDefClFImpl,iface);
 610
 611         TRACE("%p->(%p,%s,%p)\n",This,pUnkOuter,shdebugstr_guid(riid),ppvObject);
 612
 613         *ppvObject = NULL;
 614
 615         if ( This->riidInst==NULL ||
 616              IsEqualCLSID(riid, This->riidInst) ||
 617              IsEqualCLSID(riid, &IID_IUnknown) )
 618         {
 619           return This->lpfnCI(pUnkOuter, riid, ppvObject);
 620         }
 621
 622         ERR("unknown IID requested %s\n",shdebugstr_guid(riid));
 623         return E_NOINTERFACE;
 624 }
 625 /******************************************************************************
 626  * IDefClF_fnLockServer
 627  */
 628 static HRESULT WINAPI IDefClF_fnLockServer(LPCLASSFACTORY iface, BOOL fLock)
 629 {
 630         ICOM_THIS(IDefClFImpl,iface);
 631         TRACE("%p->(0x%x), not implemented\n",This, fLock);
 632         return E_NOTIMPL;
 633 }
 634
 635 static ICOM_VTABLE(IClassFactory) dclfvt =
 636 {
 637     ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 638     IDefClF_fnQueryInterface,
 639     IDefClF_fnAddRef,
 640   IDefClF_fnRelease,
 641   IDefClF_fnCreateInstance,
 642   IDefClF_fnLockServer
 643 };
 644
 645 /******************************************************************************
 646  * SHCreateDefClassObject                       [SHELL32.70]
 647  */
 648 HRESULT WINAPI SHCreateDefClassObject(
 649         REFIID  riid,
 650         LPVOID* ppv,
 651         LPFNCREATEINSTANCE lpfnCI,      /* [in] create instance callback entry */
 652         LPDWORD pcRefDll,               /* [in/out] ref count of the dll */
 653         REFIID  riidInst)               /* [in] optional interface to the instance */
 654 {
 655         IClassFactory * pcf;
 656
 657         TRACE("%s %p %p %p %s\n",
 658               shdebugstr_guid(riid), ppv, lpfnCI, pcRefDll, shdebugstr_guid(riidInst));
 659
 660         if (! IsEqualCLSID(riid, &IID_IClassFactory) ) return E_NOINTERFACE;
 661         if (! (pcf = IDefClF_fnConstructor(lpfnCI, pcRefDll, riidInst))) return E_OUTOFMEMORY;
 662         *ppv = pcf;
 663         return NOERROR;
 664 }
 665
 666 /*************************************************************************
 667  *  DragAcceptFiles             [SHELL32.54]
 668  */
 669 void WINAPI DragAcceptFiles(HWND hWnd, BOOL b)
 670 {
 671         LONG exstyle;
 672
 673         if( !IsWindow(hWnd) ) return;
 674         exstyle = GetWindowLongA(hWnd,GWL_EXSTYLE);
 675         if (b)
 676           exstyle |= WS_EX_ACCEPTFILES;
 677         else
 678           exstyle &= ~WS_EX_ACCEPTFILES;
 679         SetWindowLongA(hWnd,GWL_EXSTYLE,exstyle);
 680 }
 681
 682 /*************************************************************************
 683  * DragFinish           [SHELL32.80]
 684  */
 685 void WINAPI DragFinish(HDROP h)
 686 {
 687         TRACE("\n");
 688         GlobalFree((HGLOBAL)h);
 689 }
 690
 691 /*************************************************************************
 692  * DragQueryPoint               [SHELL32.135]
 693  */
 694 BOOL WINAPI DragQueryPoint(HDROP hDrop, POINT *p)
 695 {
 696         DROPFILES *lpDropFileStruct;
 697         BOOL bRet;
 698
 699         TRACE("\n");
 700
 701         lpDropFileStruct = (DROPFILES *) GlobalLock(hDrop);
 702
 703         *p = lpDropFileStruct->pt;
 704         bRet = lpDropFileStruct->fNC;
 705
 706         GlobalUnlock(hDrop);
 707         return bRet;
 708 }
 709
 710 /*************************************************************************
 711  *  DragQueryFile               [SHELL32.81]
 712  *  DragQueryFileA              [SHELL32.82]
 713  */
 714 UINT WINAPI DragQueryFileA(
 715         HDROP hDrop,
 716         UINT lFile,
 717         LPSTR lpszFile,
 718         UINT lLength)
 719 {
 720         LPSTR lpDrop;
 721         UINT i = 0;
 722         DROPFILES *lpDropFileStruct = (DROPFILES *) GlobalLock(hDrop);
 723
 724         TRACE("(%p, %x, %p, %u)\n",     hDrop,lFile,lpszFile,lLength);
 725
 726         if(!lpDropFileStruct) goto end;
 727
 728         lpDrop = (LPSTR) lpDropFileStruct + lpDropFileStruct->pFiles;
 729
 730         if(lpDropFileStruct->fWide == TRUE) {
 731             LPWSTR lpszFileW = NULL;
 732
 733             if(lpszFile) {
 734                 lpszFileW = (LPWSTR) HeapAlloc(GetProcessHeap(), 0, lLength*sizeof(WCHAR));
 735                 if(lpszFileW == NULL) {
 736                     goto end;
 737                 }
 738             }
 739             i = DragQueryFileW(hDrop, lFile, lpszFileW, lLength);
 740
 741             if(lpszFileW) {
 742                 WideCharToMultiByte(CP_ACP, 0, lpszFileW, -1, lpszFile, lLength, 0, NULL);
 743                 HeapFree(GetProcessHeap(), 0, lpszFileW);
 744             }
 745             goto end;
 746         }
 747
 748         while (i++ < lFile)
 749         {
 750           while (*lpDrop++); /* skip filename */
 751           if (!*lpDrop)
 752           {
 753             i = (lFile == 0xFFFFFFFF) ? i : 0;
 754             goto end;
 755           }
 756         }
 757
 758         i = strlen(lpDrop);
 759         i++;
 760         if (!lpszFile ) goto end;   /* needed buffer size */
 761         i = (lLength > i) ? i : lLength;
 762         lstrcpynA (lpszFile,  lpDrop,  i);
 763 end:
 764         GlobalUnlock(hDrop);
 765         return i;
 766 }
 767
 768 /*************************************************************************
 769  *  DragQueryFileW              [SHELL32.133]
 770  */
 771 UINT WINAPI DragQueryFileW(
 772         HDROP hDrop,
 773         UINT lFile,
 774         LPWSTR lpszwFile,
 775         UINT lLength)
 776 {
 777         LPWSTR lpwDrop;
 778         UINT i = 0;
 779         DROPFILES *lpDropFileStruct = (DROPFILES *) GlobalLock(hDrop);
 780
 781         TRACE("(%p, %x, %p, %u)\n", hDrop,lFile,lpszwFile,lLength);
 782
 783         if(!lpDropFileStruct) goto end;
 784
 785         lpwDrop = (LPWSTR) ((LPSTR)lpDropFileStruct + lpDropFileStruct->pFiles);
 786
 787         if(lpDropFileStruct->fWide == FALSE) {
 788             LPSTR lpszFileA = NULL;
 789
 790             if(lpszwFile) {
 791                 lpszFileA = (LPSTR) HeapAlloc(GetProcessHeap(), 0, lLength);
 792                 if(lpszFileA == NULL) {
 793                     goto end;
 794                 }
 795             }
 796             i = DragQueryFileA(hDrop, lFile, lpszFileA, lLength);
 797
 798             if(lpszFileA) {
 799                 MultiByteToWideChar(CP_ACP, 0, lpszFileA, -1, lpszwFile, lLength);
 800                 HeapFree(GetProcessHeap(), 0, lpszFileA);
 801             }
 802             goto end;
 803         }
 804
 805         i = 0;
 806         while (i++ < lFile)
 807         {
 808           while (*lpwDrop++); /* skip filename */
 809           if (!*lpwDrop)
 810           {
 811             i = (lFile == 0xFFFFFFFF) ? i : 0;
 812             goto end;
 813           }
 814         }
 815
 816         i = strlenW(lpwDrop);
 817         i++;
 818         if ( !lpszwFile) goto end;   /* needed buffer size */
 819
 820         i = (lLength > i) ? i : lLength;
 821         lstrcpynW (lpszwFile, lpwDrop, i);
 822 end:
 823         GlobalUnlock(hDrop);
 824         return i;
 825 }