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 <stdlib.h>
  25 #include <string.h>
  26
  27 #include "shellapi.h"
  28 #include "shlobj.h"
  29 #include "shlguid.h"
  30 #include "winreg.h"
  31 #include "winerror.h"
  32
  33 #include "undocshell.h"
  34 #include "wine/unicode.h"
  35 #include "shell32_main.h"
  36
  37 #include "wine/debug.h"
  38 #include "shlwapi.h"
  39 #include "winuser.h"
  40
  41 WINE_DEFAULT_DEBUG_CHANNEL(shell);
  42
  43 DWORD WINAPI SHCLSIDFromStringA (LPCSTR clsid, CLSID *id);
  44 extern HRESULT WINAPI IFSFolder_Constructor(IUnknown * pUnkOuter, REFIID riid, LPVOID * ppv);
  45
  46 const WCHAR sShell32[12] = {'S','H','E','L','L','3','2','.','D','L','L','\0'};
  47 const WCHAR sOLE32[10] = {'O','L','E','3','2','.','D','L','L','\0'};
  48
  49 HINSTANCE hShellOle32 = 0;
  50 /**************************************************************************
  51  * Default ClassFactory types
  52  */
  53 typedef HRESULT (CALLBACK *LPFNCREATEINSTANCE)(IUnknown* pUnkOuter, REFIID riid, LPVOID* ppvObject);
  54 IClassFactory * IDefClF_fnConstructor(LPFNCREATEINSTANCE lpfnCI, PLONG pcRefDll, REFIID riidInst);
  55
  56 /* this table contains all CLSID's of shell32 objects */
  57 struct {
  58         REFIID                  riid;
  59         LPFNCREATEINSTANCE      lpfnCI;
  60 } InterfaceTable[4] = {
  61         {&CLSID_ShellFSFolder, &IFSFolder_Constructor},
  62         {&CLSID_ShellDesktop, &ISF_Desktop_Constructor},
  63         {&CLSID_ShellLink, &IShellLink_Constructor},
  64         {NULL,NULL}
  65 };
  66
  67 /*************************************************************************
  68  * __CoCreateInstance [internal]
  69  *
  70  * NOTES
  71  *   wraper for late bound call to OLE32.DLL
  72  *
  73  */
  74 HRESULT (WINAPI *pCoCreateInstance)(REFCLSID rclsid, LPUNKNOWN pUnkOuter, DWORD dwClsContext, REFIID iid, LPVOID *ppv) = NULL;
  75
  76 void * __GetExternalFunc(HMODULE * phModule, LPCWSTR szModuleName, LPCSTR szProcName)
  77 {
  78         if (!*phModule) *phModule = GetModuleHandleW(szModuleName);
  79         if (!*phModule) *phModule = LoadLibraryW(szModuleName);
  80         if (*phModule) return GetProcAddress(*phModule, szProcName);
  81         return NULL;
  82 }
  83
  84 HRESULT  __CoCreateInstance(REFCLSID rclsid, LPUNKNOWN pUnkOuter, DWORD dwClsContext, REFIID iid, LPVOID *ppv)
  85 {
  86         if(!pCoCreateInstance) pCoCreateInstance = __GetExternalFunc(&hShellOle32, sOLE32, "CoCreateInstance");
  87         if(!pCoCreateInstance) return E_FAIL;
  88         return pCoCreateInstance(rclsid, pUnkOuter, dwClsContext, iid, ppv);
  89 }
  90
  91 /*************************************************************************
  92  * SHCoCreateInstance [SHELL32.102]
  93  *
  94  * NOTES
  95  *     exported by ordinal
  96  */
  97
  98 /* FIXME: this should be SHLWAPI.24 since we can't yet import by ordinal */
  99
 100 DWORD WINAPI __SHGUIDToStringW (REFGUID guid, LPWSTR str)
 101 {
 102     WCHAR sFormat[52] = {'{','%','0','8','l','x','-','%','0','4',
 103                          'x','-','%','0','4','x','-','%','0','2',
 104                          'x','%','0','2','x','-','%','0','2','x',
 105                          '%','0','2','x','%','0','2','x','%','0',
 106                          '2','x','%','0','2','x','%','0','2','x',
 107                          '}','\0'};
 108
 109     return wsprintfW ( str, sFormat,
 110              guid->Data1, guid->Data2, guid->Data3,
 111              guid->Data4[0], guid->Data4[1], guid->Data4[2], guid->Data4[3],
 112              guid->Data4[4], guid->Data4[5], guid->Data4[6], guid->Data4[7] );
 113
 114 }
 115
 116 LRESULT WINAPI SHCoCreateInstance(
 117         LPCSTR aclsid,
 118         REFCLSID clsid,
 119         LPUNKNOWN pUnkOuter,
 120         REFIID refiid,
 121         LPVOID *ppv)
 122 {
 123         DWORD   hres;
 124         IID     iid;
 125         CLSID * myclsid = (CLSID*)clsid;
 126         WCHAR   sKeyName[MAX_PATH];
 127         const   WCHAR sCLSID[7] = {'C','L','S','I','D','\\','\0'};
 128         WCHAR   sClassID[60];
 129         const WCHAR sInProcServer32[16] ={'\\','I','n','p','r','o','c','S','e','r','v','e','r','3','2','\0'};
 130         const WCHAR sLoadWithoutCOM[15] ={'L','o','a','d','W','i','t','h','o','u','t','C','O','M','\0'};
 131         WCHAR   sDllPath[MAX_PATH];
 132         HKEY    hKey;
 133         DWORD   dwSize;
 134         BOOLEAN bLoadFromShell32 = FALSE;
 135         BOOLEAN bLoadWithoutCOM = FALSE;
 136         IClassFactory * pcf = NULL;
 137
 138         /* if the clsid is a string, convert it */
 139         if (!clsid)
 140         {
 141           if (!aclsid) return REGDB_E_CLASSNOTREG;
 142           SHCLSIDFromStringA(aclsid, &iid);
 143           myclsid = &iid;
 144         }
 145
 146         TRACE("(%p,\n\tCLSID:\t%s, unk:%p\n\tIID:\t%s,%p)\n",
 147                 aclsid,debugstr_guid(myclsid),pUnkOuter,debugstr_guid(refiid),ppv);
 148
 149         /* we look up the dll path in the registry */
 150         __SHGUIDToStringW(myclsid, sClassID);
 151         lstrcpyW(sKeyName, sCLSID);
 152         lstrcatW(sKeyName, sClassID);
 153         lstrcatW(sKeyName, sInProcServer32);
 154
 155         if (ERROR_SUCCESS == RegOpenKeyExW(HKEY_CLASSES_ROOT, sKeyName, 0, KEY_READ, &hKey)) {
 156             dwSize = sizeof(sDllPath);
 157             SHQueryValueExW(hKey, NULL, 0,0, sDllPath, &dwSize );
 158
 159             /* if a special registry key is set we loading a shell extension without help of OLE32 */
 160             bLoadWithoutCOM = (ERROR_SUCCESS == SHQueryValueExW(hKey, sLoadWithoutCOM, 0, 0, 0, 0));
 161
 162             /* if the com object is inside shell32 omit use of ole32 */
 163             bLoadFromShell32 = (0==lstrcmpiW( PathFindFileNameW(sDllPath), sShell32));
 164
 165             RegCloseKey (hKey);
 166         } else {
 167             /* since we can't find it in the registry we try internally */
 168             bLoadFromShell32 = TRUE;
 169         }
 170
 171         TRACE("WithoutCom=%u FromShell=%u\n", bLoadWithoutCOM, bLoadFromShell32);
 172
 173         /* now we create a instance */
 174         *ppv=NULL;
 175
 176         if (bLoadFromShell32) {
 177             if (! SUCCEEDED(SHELL32_DllGetClassObject(myclsid, &IID_IClassFactory,(LPVOID*)&pcf))) {
 178                 ERR("LoadFromShell failed for CLSID=%s\n", debugstr_guid(myclsid));
 179             }
 180         } else if (bLoadWithoutCOM) {
 181
 182             /* load a external dll without ole32 */
 183             HANDLE hLibrary;
 184             typedef HRESULT (CALLBACK *DllGetClassObjectFunc)(REFCLSID clsid, REFIID iid, LPVOID *ppv);
 185             DllGetClassObjectFunc DllGetClassObject;
 186
 187             if ((hLibrary = LoadLibraryExW(sDllPath, 0, LOAD_WITH_ALTERED_SEARCH_PATH)) == 0) {
 188                 ERR("couldn't load InprocServer32 dll %s\n", debugstr_w(sDllPath));
 189                 hres = E_ACCESSDENIED;
 190                 goto end;
 191             } else if (!(DllGetClassObject = (DllGetClassObjectFunc)GetProcAddress(hLibrary, "DllGetClassObject"))) {
 192                 ERR("couldn't find function DllGetClassObject in %s\n", debugstr_w(sDllPath));
 193                 FreeLibrary( hLibrary );
 194                 hres = E_ACCESSDENIED;
 195                 goto end;
 196             } else if (! SUCCEEDED(hres = DllGetClassObject(myclsid, &IID_IClassFactory, (LPVOID*)&pcf))) {
 197                     TRACE("GetClassObject failed 0x%08lx\n", hres);
 198                     goto end;
 199             }
 200
 201         } else {
 202
 203             /* load a external dll in the usual way */
 204             hres = __CoCreateInstance(myclsid, pUnkOuter, CLSCTX_INPROC_SERVER, refiid, ppv);
 205             goto end;
 206         }
 207
 208         /* here we should have a ClassFactory */
 209         if (!pcf) return E_ACCESSDENIED;
 210
 211         hres = IClassFactory_CreateInstance(pcf, pUnkOuter, refiid, ppv);
 212         IClassFactory_Release(pcf);
 213 end:
 214         if(hres!=S_OK)
 215         {
 216           ERR("failed (0x%08lx) to create \n\tCLSID:\t%s\n\tIID:\t%s\n",
 217               hres, debugstr_guid(myclsid), debugstr_guid(refiid));
 218           ERR("class not found in registry\n");
 219         }
 220
 221         TRACE("-- instance: %p\n",*ppv);
 222         return hres;
 223 }
 224
 225 /*************************************************************************
 226  * DllGetClassObject   [SHELL32.128]
 227  */
 228 HRESULT WINAPI SHELL32_DllGetClassObject(REFCLSID rclsid, REFIID iid, LPVOID *ppv)
 229 {
 230         HRESULT hres = E_OUTOFMEMORY;
 231         IClassFactory * pcf = NULL;
 232         int i;
 233
 234         TRACE("\n\tCLSID:\t%s,\n\tIID:\t%s\n",debugstr_guid(rclsid),debugstr_guid(iid));
 235
 236         if (!ppv) return E_INVALIDARG;
 237         *ppv = NULL;
 238
 239         /* search our internal interface table */
 240         for(i=0;InterfaceTable[i].riid;i++) {
 241             if(IsEqualIID(InterfaceTable[i].riid, rclsid)) {
 242                 TRACE("index[%u]\n", i);
 243                 pcf = IDefClF_fnConstructor(InterfaceTable[i].lpfnCI, &shell32_ObjCount, NULL);
 244             }
 245         }
 246
 247         if (!pcf) {
 248             FIXME("failed for CLSID=%s\n", debugstr_guid(rclsid));
 249             return CLASS_E_CLASSNOTAVAILABLE;
 250         }
 251
 252         hres = IClassFactory_QueryInterface(pcf, iid, ppv);
 253         IClassFactory_Release(pcf);
 254
 255         TRACE("-- pointer to class factory: %p\n",*ppv);
 256         return hres;
 257 }
 258
 259 /*************************************************************************
 260  * SHCLSIDFromString                            [SHELL32.147]
 261  *
 262  * NOTES
 263  *     exported by ordinal
 264  */
 265 DWORD WINAPI SHCLSIDFromStringA (LPCSTR clsid, CLSID *id)
 266 {
 267     WCHAR buffer[40];
 268     TRACE("(%p(%s) %p)\n", clsid, clsid, id);
 269     if (!MultiByteToWideChar( CP_ACP, 0, clsid, -1, buffer, sizeof(buffer)/sizeof(WCHAR) ))
 270         return CO_E_CLASSSTRING;
 271     return CLSIDFromString( buffer, id );
 272 }
 273 DWORD WINAPI SHCLSIDFromStringW (LPWSTR clsid, CLSID *id)
 274 {
 275         TRACE("(%p(%s) %p)\n", clsid, debugstr_w(clsid), id);
 276         return CLSIDFromString(clsid, id);
 277 }
 278 DWORD WINAPI SHCLSIDFromStringAW (LPVOID clsid, CLSID *id)
 279 {
 280         if (SHELL_OsIsUnicode())
 281           return SHCLSIDFromStringW (clsid, id);
 282         return SHCLSIDFromStringA (clsid, id);
 283 }
 284
 285 /*************************************************************************
 286  *      Shell Memory Allocator
 287  */
 288
 289 /* set the vtable later */
 290 extern ICOM_VTABLE(IMalloc) VT_Shell_IMalloc32;
 291
 292 /* this is the static object instance */
 293 typedef struct {
 294         ICOM_VFIELD(IMalloc);
 295         DWORD dummy;
 296 } _ShellMalloc;
 297
 298 _ShellMalloc Shell_Malloc = { &VT_Shell_IMalloc32,1};
 299
 300 /* this is the global allocator of shell32 */
 301 IMalloc * ShellTaskAllocator = NULL;
 302
 303 /******************************************************************************
 304  *              IShellMalloc_QueryInterface        [VTABLE]
 305  */
 306 static HRESULT WINAPI IShellMalloc_fnQueryInterface(LPMALLOC iface, REFIID refiid, LPVOID *obj)
 307 {
 308         TRACE("(%s,%p)\n",debugstr_guid(refiid),obj);
 309
 310         if (IsEqualIID(refiid, &IID_IUnknown) || IsEqualIID(refiid, &IID_IMalloc)) {
 311                 *obj = (LPMALLOC) &Shell_Malloc;
 312                 return S_OK;
 313         }
 314         return E_NOINTERFACE;
 315 }
 316
 317 /******************************************************************************
 318  *              IShellMalloc_AddRefRelease        [VTABLE]
 319  */
 320 static ULONG WINAPI IShellMalloc_fnAddRefRelease(LPMALLOC iface)
 321 {
 322         return 1;
 323 }
 324
 325 /******************************************************************************
 326  *              IShellMalloc_Alloc [VTABLE]
 327  */
 328 static LPVOID WINAPI IShellMalloc_fnAlloc(LPMALLOC iface, DWORD cb)
 329 {
 330         LPVOID addr;
 331
 332         addr = (LPVOID) LocalAlloc(GMEM_ZEROINIT, cb);
 333         TRACE("(%p,%ld);\n",addr,cb);
 334         return addr;
 335 }
 336
 337 /******************************************************************************
 338  *              IShellMalloc_Realloc [VTABLE]
 339  */
 340 static LPVOID WINAPI IShellMalloc_fnRealloc(LPMALLOC iface, LPVOID pv, DWORD cb)
 341 {
 342         LPVOID addr;
 343
 344         if (pv) {
 345                 if (cb) {
 346                         addr = (LPVOID) LocalReAlloc((HANDLE) pv, cb, GMEM_ZEROINIT | GMEM_MOVEABLE);
 347                 } else {
 348                         LocalFree((HANDLE) pv);
 349                         addr = NULL;
 350                 }
 351         } else {
 352                 if (cb) {
 353                         addr = (LPVOID) LocalAlloc(GMEM_ZEROINIT, cb);
 354                 } else {
 355                         addr = NULL;
 356                 }
 357         }
 358
 359         TRACE("(%p->%p,%ld)\n",pv,addr,cb);
 360         return addr;
 361 }
 362
 363 /******************************************************************************
 364  *              IShellMalloc_Free [VTABLE]
 365  */
 366 static VOID WINAPI IShellMalloc_fnFree(LPMALLOC iface, LPVOID pv)
 367 {
 368         TRACE("(%p)\n",pv);
 369         LocalFree((HANDLE) pv);
 370 }
 371
 372 /******************************************************************************
 373  *              IShellMalloc_GetSize [VTABLE]
 374  */
 375 static DWORD WINAPI IShellMalloc_fnGetSize(LPMALLOC iface, LPVOID pv)
 376 {
 377         DWORD cb = (DWORD) LocalSize((HANDLE)pv);
 378         TRACE("(%p,%ld)\n", pv, cb);
 379         return cb;
 380 }
 381
 382 /******************************************************************************
 383  *              IShellMalloc_DidAlloc [VTABLE]
 384  */
 385 static INT WINAPI IShellMalloc_fnDidAlloc(LPMALLOC iface, LPVOID pv)
 386 {
 387         TRACE("(%p)\n",pv);
 388         return -1;
 389 }
 390
 391 /******************************************************************************
 392  *              IShellMalloc_HeapMinimize [VTABLE]
 393  */
 394 static VOID WINAPI IShellMalloc_fnHeapMinimize(LPMALLOC iface)
 395 {
 396         TRACE("()\n");
 397 }
 398
 399 static ICOM_VTABLE(IMalloc) VT_Shell_IMalloc32 =
 400 {
 401         ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 402         IShellMalloc_fnQueryInterface,
 403         IShellMalloc_fnAddRefRelease,
 404         IShellMalloc_fnAddRefRelease,
 405         IShellMalloc_fnAlloc,
 406         IShellMalloc_fnRealloc,
 407         IShellMalloc_fnFree,
 408         IShellMalloc_fnGetSize,
 409         IShellMalloc_fnDidAlloc,
 410         IShellMalloc_fnHeapMinimize
 411 };
 412
 413 /*************************************************************************
 414  *                       SHGetMalloc                    [SHELL32.@]
 415  * returns the interface to shell malloc.
 416  *
 417  * NOTES
 418  *  uses OLE32.CoGetMalloc if OLE32.DLL is already loaded.
 419  *  if not it uses a internal implementations as fallback.
 420  */
 421 DWORD WINAPI SHGetMalloc(LPMALLOC *lpmal)
 422 {
 423         HRESULT (WINAPI *pCoGetMalloc)(DWORD,LPMALLOC *);
 424         HMODULE hOle32;
 425
 426         TRACE("(%p)\n", lpmal);
 427
 428         if (!ShellTaskAllocator)
 429         {
 430                 hOle32 = GetModuleHandleA("OLE32.DLL");
 431                 if(hOle32) {
 432                         pCoGetMalloc = (void*) GetProcAddress(hOle32, "CoGetMalloc");
 433                         if (pCoGetMalloc) pCoGetMalloc(MEMCTX_TASK, &ShellTaskAllocator);
 434                         TRACE("got ole32 IMalloc\n");
 435                 }
 436                 if(!ShellTaskAllocator) {
 437                         ShellTaskAllocator = (IMalloc* ) &Shell_Malloc;
 438                         TRACE("use fallback allocator\n");
 439                 }
 440         }
 441         *lpmal = ShellTaskAllocator;
 442         return  S_OK;
 443 }
 444
 445 /*************************************************************************
 446  * SHAlloc                                      [SHELL32.196]
 447  *
 448  * NOTES
 449  *     exported by ordinal
 450  */
 451 LPVOID WINAPI SHAlloc(DWORD len)
 452 {
 453         IMalloc * ppv;
 454         LPBYTE ret;
 455
 456         if (!ShellTaskAllocator) SHGetMalloc(&ppv);
 457
 458         ret = (LPVOID) IMalloc_Alloc(ShellTaskAllocator, len);
 459         if(ret) ZeroMemory(ret, len); /*FIXME*/
 460         TRACE("%lu bytes at %p\n",len, ret);
 461         return (LPVOID)ret;
 462 }
 463
 464 /*************************************************************************
 465  * SHFree                                       [SHELL32.195]
 466  *
 467  * NOTES
 468  *     exported by ordinal
 469  */
 470 void WINAPI SHFree(LPVOID pv)
 471 {
 472         IMalloc * ppv;
 473
 474         TRACE("%p\n",pv);
 475         if (!ShellTaskAllocator) SHGetMalloc(&ppv);
 476         IMalloc_Free(ShellTaskAllocator, pv);
 477 }
 478
 479 /*************************************************************************
 480  * SHGetDesktopFolder                   [SHELL32.@]
 481  */
 482 DWORD WINAPI SHGetDesktopFolder(IShellFolder **psf)
 483 {
 484         HRESULT hres = S_OK;
 485         TRACE("%p->(%p)\n",psf,*psf);
 486
 487         if(!psf) return E_INVALIDARG;
 488         *psf = NULL;
 489         hres = ISF_Desktop_Constructor(NULL, &IID_IShellFolder,(LPVOID*)psf);
 490
 491         TRACE("-- %p->(%p)\n",psf, *psf);
 492         return hres;
 493 }
 494
 495 /**************************************************************************
 496  * Default ClassFactory Implementation
 497  *
 498  * SHCreateDefClassObject
 499  *
 500  * NOTES
 501  *  helper function for dll's without a own classfactory
 502  *  a generic classfactory is returned
 503  *  when the CreateInstance of the cf is called the callback is executed
 504  */
 505
 506 typedef struct
 507 {
 508     ICOM_VFIELD(IClassFactory);
 509     DWORD                       ref;
 510     CLSID                       *rclsid;
 511     LPFNCREATEINSTANCE          lpfnCI;
 512     const IID *                 riidInst;
 513     ULONG *                     pcRefDll; /* pointer to refcounter in external dll (ugrrr...) */
 514 } IDefClFImpl;
 515
 516 static ICOM_VTABLE(IClassFactory) dclfvt;
 517
 518 /**************************************************************************
 519  *  IDefClF_fnConstructor
 520  */
 521
 522 IClassFactory * IDefClF_fnConstructor(LPFNCREATEINSTANCE lpfnCI, PLONG pcRefDll, REFIID riidInst)
 523 {
 524         IDefClFImpl* lpclf;
 525
 526         lpclf = (IDefClFImpl*)HeapAlloc(GetProcessHeap(),0,sizeof(IDefClFImpl));
 527         lpclf->ref = 1;
 528         ICOM_VTBL(lpclf) = &dclfvt;
 529         lpclf->lpfnCI = lpfnCI;
 530         lpclf->pcRefDll = pcRefDll;
 531
 532         if (pcRefDll) InterlockedIncrement(pcRefDll);
 533         lpclf->riidInst = riidInst;
 534
 535         TRACE("(%p)\n\tIID:\t%s\n",lpclf, debugstr_guid(riidInst));
 536         return (LPCLASSFACTORY)lpclf;
 537 }
 538 /**************************************************************************
 539  *  IDefClF_fnQueryInterface
 540  */
 541 static HRESULT WINAPI IDefClF_fnQueryInterface(
 542   LPCLASSFACTORY iface, REFIID riid, LPVOID *ppvObj)
 543 {
 544         ICOM_THIS(IDefClFImpl,iface);
 545
 546         TRACE("(%p)->(\n\tIID:\t%s)\n",This,debugstr_guid(riid));
 547
 548         *ppvObj = NULL;
 549
 550         if(IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IClassFactory)) {
 551           *ppvObj = This;
 552           InterlockedIncrement(&This->ref);
 553           return S_OK;
 554         }
 555
 556         TRACE("-- E_NOINTERFACE\n");
 557         return E_NOINTERFACE;
 558 }
 559 /******************************************************************************
 560  * IDefClF_fnAddRef
 561  */
 562 static ULONG WINAPI IDefClF_fnAddRef(LPCLASSFACTORY iface)
 563 {
 564         ICOM_THIS(IDefClFImpl,iface);
 565         TRACE("(%p)->(count=%lu)\n",This,This->ref);
 566
 567         return InterlockedIncrement(&This->ref);
 568 }
 569 /******************************************************************************
 570  * IDefClF_fnRelease
 571  */
 572 static ULONG WINAPI IDefClF_fnRelease(LPCLASSFACTORY iface)
 573 {
 574         ICOM_THIS(IDefClFImpl,iface);
 575         TRACE("(%p)->(count=%lu)\n",This,This->ref);
 576
 577         if (!InterlockedDecrement(&This->ref))
 578         {
 579           if (This->pcRefDll) InterlockedDecrement(This->pcRefDll);
 580
 581           TRACE("-- destroying IClassFactory(%p)\n",This);
 582           HeapFree(GetProcessHeap(),0,This);
 583           return 0;
 584         }
 585         return This->ref;
 586 }
 587 /******************************************************************************
 588  * IDefClF_fnCreateInstance
 589  */
 590 static HRESULT WINAPI IDefClF_fnCreateInstance(
 591   LPCLASSFACTORY iface, LPUNKNOWN pUnkOuter, REFIID riid, LPVOID *ppvObject)
 592 {
 593         ICOM_THIS(IDefClFImpl,iface);
 594
 595         TRACE("%p->(%p,\n\tIID:\t%s,%p)\n",This,pUnkOuter,debugstr_guid(riid),ppvObject);
 596
 597         *ppvObject = NULL;
 598
 599         if ( This->riidInst==NULL ||
 600              IsEqualCLSID(riid, This->riidInst) ||
 601              IsEqualCLSID(riid, &IID_IUnknown) )
 602         {
 603           return This->lpfnCI(pUnkOuter, riid, ppvObject);
 604         }
 605
 606         ERR("unknown IID requested\n\tIID:\t%s\n",debugstr_guid(riid));
 607         return E_NOINTERFACE;
 608 }
 609 /******************************************************************************
 610  * IDefClF_fnLockServer
 611  */
 612 static HRESULT WINAPI IDefClF_fnLockServer(LPCLASSFACTORY iface, BOOL fLock)
 613 {
 614         ICOM_THIS(IDefClFImpl,iface);
 615         TRACE("%p->(0x%x), not implemented\n",This, fLock);
 616         return E_NOTIMPL;
 617 }
 618
 619 static ICOM_VTABLE(IClassFactory) dclfvt =
 620 {
 621     ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 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("\n\tIID:\t%s %p %p %p \n\tIIDIns:\t%s\n",
 642               debugstr_guid(riid), ppv, lpfnCI, pcRefDll, debugstr_guid(riidInst));
 643
 644         if (! IsEqualCLSID(riid, &IID_IClassFactory) ) return E_NOINTERFACE;
 645         if (! (pcf = IDefClF_fnConstructor(lpfnCI, pcRefDll, riidInst))) return E_OUTOFMEMORY;
 646         *ppv = pcf;
 647         return NOERROR;
 648 }
 649
 650 /*************************************************************************
 651  *  DragAcceptFiles             [SHELL32.54]
 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           [SHELL32.80]
 668  */
 669 void WINAPI DragFinish(HDROP h)
 670 {
 671         TRACE("\n");
 672         GlobalFree((HGLOBAL)h);
 673 }
 674
 675 /*************************************************************************
 676  * DragQueryPoint               [SHELL32.135]
 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               [SHELL32.81]
 696  *  DragQueryFileA              [SHELL32.82]
 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("(%08x, %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 == TRUE) {
 715             LPWSTR lpszFileW = NULL;
 716
 717             if(lpszFile) {
 718                 lpszFileW = (LPWSTR) 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              [SHELL32.133]
 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("(%08x, %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 = (LPSTR) 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 }