git.oblomov.eu Git - wine/blob - dlls/shell32/shfldr_desktop.c

   1
   2 /*
   3  *    Virtual Desktop Folder
   4  *
   5  *    Copyright 1997            Marcus Meissner
   6  *    Copyright 1998, 1999, 2002    Juergen Schmied
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #include "config.h"
  24 #include "wine/port.h"
  25
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <stdarg.h>
  29 #include <stdio.h>
  30
  31 #define COBJMACROS
  32 #define NONAMELESSUNION
  33 #define NONAMELESSSTRUCT
  34
  35 #include "winerror.h"
  36 #include "windef.h"
  37 #include "winbase.h"
  38 #include "winreg.h"
  39 #include "wingdi.h"
  40 #include "winuser.h"
  41
  42 #include "ole2.h"
  43 #include "shlguid.h"
  44
  45 #include "enumidlist.h"
  46 #include "pidl.h"
  47 #include "undocshell.h"
  48 #include "shell32_main.h"
  49 #include "shresdef.h"
  50 #include "shlwapi.h"
  51 #include "shellfolder.h"
  52 #include "wine/debug.h"
  53 #include "debughlp.h"
  54 #include "shfldr.h"
  55
  56 WINE_DEFAULT_DEBUG_CHANNEL (shell);
  57
  58 /***********************************************************************
  59 *     Desktopfolder implementation
  60 */
  61
  62 typedef struct {
  63     const IShellFolder2Vtbl *lpVtbl;
  64     LONG ref;
  65
  66     CLSID *pclsid;
  67
  68     /* both paths are parsible from the desktop */
  69     LPWSTR sPathTarget;     /* complete path to target used for enumeration and ChangeNotify */
  70     LPITEMIDLIST pidlRoot;  /* absolute pidl */
  71
  72     UINT cfShellIDList;        /* clipboardformat for IDropTarget */
  73     BOOL fAcceptFmt;        /* flag for pending Drop */
  74 } IGenericSFImpl;
  75
  76 #define _IUnknown_(This)    (IShellFolder*)&(This->lpVtbl)
  77 #define _IShellFolder_(This)    (IShellFolder*)&(This->lpVtbl)
  78
  79 static shvheader DesktopSFHeader[] = {
  80     {IDS_SHV_COLUMN1, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 15},
  81     {IDS_SHV_COLUMN2, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 10},
  82     {IDS_SHV_COLUMN3, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 10},
  83     {IDS_SHV_COLUMN4, SHCOLSTATE_TYPE_DATE | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 12},
  84     {IDS_SHV_COLUMN5, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 5}
  85 };
  86
  87 #define DESKTOPSHELLVIEWCOLUMNS 5
  88
  89 /**************************************************************************
  90  *    ISF_Desktop_fnQueryInterface
  91  *
  92  * NOTES supports not IPersist/IPersistFolder
  93  */
  94 static HRESULT WINAPI ISF_Desktop_fnQueryInterface(
  95                 IShellFolder2 * iface, REFIID riid, LPVOID * ppvObj)
  96 {
  97     IGenericSFImpl *This = (IGenericSFImpl *)iface;
  98
  99     TRACE ("(%p)->(%s,%p)\n", This, shdebugstr_guid (riid), ppvObj);
 100
 101     *ppvObj = NULL;
 102
 103     if (IsEqualIID (riid, &IID_IUnknown) ||
 104         IsEqualIID (riid, &IID_IShellFolder) ||
 105         IsEqualIID (riid, &IID_IShellFolder2))
 106     {
 107         *ppvObj = This;
 108     }
 109
 110     if (*ppvObj)
 111     {
 112         IUnknown_AddRef ((IUnknown *) (*ppvObj));
 113         TRACE ("-- Interface: (%p)->(%p)\n", ppvObj, *ppvObj);
 114         return S_OK;
 115     }
 116     TRACE ("-- Interface: E_NOINTERFACE\n");
 117     return E_NOINTERFACE;
 118 }
 119
 120 static ULONG WINAPI ISF_Desktop_fnAddRef (IShellFolder2 * iface)
 121 {
 122     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 123     ULONG refCount = InterlockedIncrement(&This->ref);
 124
 125     TRACE ("(%p)->(count=%u)\n", This, refCount - 1);
 126
 127     return refCount;
 128 }
 129
 130 static ULONG WINAPI ISF_Desktop_fnRelease (IShellFolder2 * iface)
 131 {
 132     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 133     ULONG refCount = InterlockedDecrement(&This->ref);
 134
 135     TRACE ("(%p)->(count=%u)\n", This, refCount + 1);
 136
 137     if (!refCount)
 138     {
 139         TRACE ("-- destroying IShellFolder(%p)\n", This);
 140         SHFree (This->pidlRoot);
 141         SHFree (This->sPathTarget);
 142         LocalFree ((HLOCAL) This);
 143         return 0;
 144     }
 145     return refCount;
 146 }
 147
 148 /**************************************************************************
 149  *    ISF_Desktop_fnParseDisplayName
 150  *
 151  * NOTES
 152  *    "::{20D04FE0-3AEA-1069-A2D8-08002B30309D}" and "" binds
 153  *    to MyComputer
 154  */
 155 static HRESULT WINAPI ISF_Desktop_fnParseDisplayName (IShellFolder2 * iface,
 156                 HWND hwndOwner, LPBC pbc, LPOLESTR lpszDisplayName,
 157                 DWORD * pchEaten, LPITEMIDLIST * ppidl, DWORD * pdwAttributes)
 158 {
 159     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 160     WCHAR szElement[MAX_PATH];
 161     LPCWSTR szNext = NULL;
 162     LPITEMIDLIST pidlTemp = NULL;
 163     HRESULT hr = S_OK;
 164     CLSID clsid;
 165
 166     TRACE ("(%p)->(HWND=%p,%p,%p=%s,%p,pidl=%p,%p)\n",
 167            This, hwndOwner, pbc, lpszDisplayName, debugstr_w(lpszDisplayName),
 168            pchEaten, ppidl, pdwAttributes);
 169
 170     if (!lpszDisplayName || !ppidl)
 171         return E_INVALIDARG;
 172
 173     *ppidl = 0;
 174
 175     if (pchEaten)
 176         *pchEaten = 0;        /* strange but like the original */
 177
 178     if (lpszDisplayName[0] == ':' && lpszDisplayName[1] == ':')
 179     {
 180         szNext = GetNextElementW (lpszDisplayName, szElement, MAX_PATH);
 181         TRACE ("-- element: %s\n", debugstr_w (szElement));
 182         SHCLSIDFromStringW (szElement + 2, &clsid);
 183         pidlTemp = _ILCreateGuid (PT_GUID, &clsid);
 184     }
 185     else if (PathGetDriveNumberW (lpszDisplayName) >= 0)
 186     {
 187         /* it's a filesystem path with a drive. Let MyComputer/UnixDosFolder parse it */
 188         if (UNIXFS_is_rooted_at_desktop())
 189             pidlTemp = _ILCreateGuid(PT_GUID, &CLSID_UnixDosFolder);
 190         else
 191             pidlTemp = _ILCreateMyComputer ();
 192         szNext = lpszDisplayName;
 193     }
 194     else if (PathIsUNCW(lpszDisplayName))
 195     {
 196         pidlTemp = _ILCreateNetwork();
 197         szNext = lpszDisplayName;
 198     }
 199     else if( (pidlTemp = SHELL32_CreatePidlFromBindCtx(pbc, lpszDisplayName)) )
 200     {
 201         *ppidl = pidlTemp;
 202         return S_OK;
 203     }
 204     else
 205     {
 206         /* it's a filesystem path on the desktop. Let a FSFolder parse it */
 207
 208         if (*lpszDisplayName)
 209         {
 210             WCHAR szPath[MAX_PATH];
 211             LPWSTR pathPtr;
 212
 213             /* build a complete path to create a simple pidl */
 214             lstrcpynW(szPath, This->sPathTarget, MAX_PATH);
 215             pathPtr = PathAddBackslashW(szPath);
 216             if (pathPtr)
 217             {
 218                 lstrcpynW(pathPtr, lpszDisplayName, MAX_PATH - (pathPtr - szPath));
 219                 hr = _ILCreateFromPathW(szPath, &pidlTemp);
 220             }
 221             else
 222             {
 223                 /* should never reach here, but for completeness */
 224                 hr = HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
 225             }
 226         }
 227         else
 228             pidlTemp = _ILCreateMyComputer();
 229
 230         szNext = NULL;
 231     }
 232
 233     if (SUCCEEDED(hr) && pidlTemp)
 234     {
 235         if (szNext && *szNext)
 236         {
 237             hr = SHELL32_ParseNextElement(iface, hwndOwner, pbc,
 238                     &pidlTemp, (LPOLESTR) szNext, pchEaten, pdwAttributes);
 239         }
 240         else
 241         {
 242             if (pdwAttributes && *pdwAttributes)
 243                 hr = SHELL32_GetItemAttributes(_IShellFolder_ (This),
 244                                                pidlTemp, pdwAttributes);
 245         }
 246     }
 247
 248     *ppidl = pidlTemp;
 249
 250     TRACE ("(%p)->(-- ret=0x%08x)\n", This, hr);
 251
 252     return hr;
 253 }
 254
 255 /**************************************************************************
 256  *  CreateDesktopEnumList()
 257  */
 258 static const WCHAR Desktop_NameSpaceW[] = { 'S','O','F','T','W','A','R','E',
 259  '\\','M','i','c','r','o','s','o','f','t','\\','W','i','n','d','o','w','s','\\',
 260  'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\','E','x','p','l',
 261  'o','r','e','r','\\','D','e','s','k','t','o','p','\\','N','a','m','e','s','p',
 262  'a','c','e','\0' };
 263
 264 static BOOL CreateDesktopEnumList(IEnumIDList *list, DWORD dwFlags)
 265 {
 266     BOOL ret = TRUE;
 267     WCHAR szPath[MAX_PATH];
 268
 269     TRACE("(%p)->(flags=0x%08x)\n", list, dwFlags);
 270
 271     /* enumerate the root folders */
 272     if (dwFlags & SHCONTF_FOLDERS)
 273     {
 274         HKEY hkey;
 275         UINT i;
 276
 277         /* create the pidl for This item */
 278         ret = AddToEnumList(list, _ILCreateMyComputer());
 279
 280         for (i=0; i<2; i++) {
 281             if (ret && !RegOpenKeyExW(i == 0 ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER,
 282                                       Desktop_NameSpaceW, 0, KEY_READ, &hkey))
 283             {
 284                 WCHAR iid[50];
 285                 int i=0;
 286
 287                 while (ret)
 288                 {
 289                     DWORD size;
 290                     LONG r;
 291
 292                     size = sizeof (iid);
 293                     r = RegEnumKeyExW(hkey, i, iid, &size, 0, NULL, NULL, NULL);
 294                     if (ERROR_SUCCESS == r)
 295                     {
 296                         ret = AddToEnumList(list, _ILCreateGuidFromStrW(iid));
 297                         i++;
 298                     }
 299                     else if (ERROR_NO_MORE_ITEMS == r)
 300                         break;
 301                     else
 302                         ret = FALSE;
 303                 }
 304                 RegCloseKey(hkey);
 305             }
 306         }
 307     }
 308
 309     /* enumerate the elements in %windir%\desktop */
 310     SHGetSpecialFolderPathW(0, szPath, CSIDL_DESKTOPDIRECTORY, FALSE);
 311     ret = ret && CreateFolderEnumList(list, szPath, dwFlags);
 312
 313     return ret;
 314 }
 315
 316 /**************************************************************************
 317  *        ISF_Desktop_fnEnumObjects
 318  */
 319 static HRESULT WINAPI ISF_Desktop_fnEnumObjects (IShellFolder2 * iface,
 320                 HWND hwndOwner, DWORD dwFlags, LPENUMIDLIST * ppEnumIDList)
 321 {
 322     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 323
 324     TRACE ("(%p)->(HWND=%p flags=0x%08x pplist=%p)\n",
 325            This, hwndOwner, dwFlags, ppEnumIDList);
 326
 327     *ppEnumIDList = IEnumIDList_Constructor();
 328     if (*ppEnumIDList)
 329         CreateDesktopEnumList(*ppEnumIDList, dwFlags);
 330
 331     TRACE ("-- (%p)->(new ID List: %p)\n", This, *ppEnumIDList);
 332
 333     return *ppEnumIDList ? S_OK : E_OUTOFMEMORY;
 334 }
 335
 336 /**************************************************************************
 337  *        ISF_Desktop_fnBindToObject
 338  */
 339 static HRESULT WINAPI ISF_Desktop_fnBindToObject (IShellFolder2 * iface,
 340                 LPCITEMIDLIST pidl, LPBC pbcReserved, REFIID riid, LPVOID * ppvOut)
 341 {
 342     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 343
 344     TRACE ("(%p)->(pidl=%p,%p,%s,%p)\n",
 345            This, pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 346
 347     return SHELL32_BindToChild( This->pidlRoot, This->sPathTarget, pidl, riid, ppvOut );
 348 }
 349
 350 /**************************************************************************
 351  *    ISF_Desktop_fnBindToStorage
 352  */
 353 static HRESULT WINAPI ISF_Desktop_fnBindToStorage (IShellFolder2 * iface,
 354                 LPCITEMIDLIST pidl, LPBC pbcReserved, REFIID riid, LPVOID * ppvOut)
 355 {
 356     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 357
 358     FIXME ("(%p)->(pidl=%p,%p,%s,%p) stub\n",
 359            This, pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 360
 361     *ppvOut = NULL;
 362     return E_NOTIMPL;
 363 }
 364
 365 /**************************************************************************
 366  *     ISF_Desktop_fnCompareIDs
 367  */
 368 static HRESULT WINAPI ISF_Desktop_fnCompareIDs (IShellFolder2 * iface,
 369                         LPARAM lParam, LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 370 {
 371     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 372     int nReturn;
 373
 374     TRACE ("(%p)->(0x%08lx,pidl1=%p,pidl2=%p)\n", This, lParam, pidl1, pidl2);
 375     nReturn = SHELL32_CompareIDs (_IShellFolder_ (This), lParam, pidl1, pidl2);
 376     TRACE ("-- %i\n", nReturn);
 377     return nReturn;
 378 }
 379
 380 /**************************************************************************
 381  *    ISF_Desktop_fnCreateViewObject
 382  */
 383 static HRESULT WINAPI ISF_Desktop_fnCreateViewObject (IShellFolder2 * iface,
 384                               HWND hwndOwner, REFIID riid, LPVOID * ppvOut)
 385 {
 386     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 387     LPSHELLVIEW pShellView;
 388     HRESULT hr = E_INVALIDARG;
 389
 390     TRACE ("(%p)->(hwnd=%p,%s,%p)\n",
 391            This, hwndOwner, shdebugstr_guid (riid), ppvOut);
 392
 393     if (!ppvOut)
 394         return hr;
 395
 396     *ppvOut = NULL;
 397
 398     if (IsEqualIID (riid, &IID_IDropTarget))
 399     {
 400         WARN ("IDropTarget not implemented\n");
 401         hr = E_NOTIMPL;
 402     }
 403     else if (IsEqualIID (riid, &IID_IContextMenu))
 404     {
 405         WARN ("IContextMenu not implemented\n");
 406         hr = E_NOTIMPL;
 407     }
 408     else if (IsEqualIID (riid, &IID_IShellView))
 409     {
 410         pShellView = IShellView_Constructor ((IShellFolder *) iface);
 411         if (pShellView)
 412         {
 413             hr = IShellView_QueryInterface (pShellView, riid, ppvOut);
 414             IShellView_Release (pShellView);
 415         }
 416     }
 417     TRACE ("-- (%p)->(interface=%p)\n", This, ppvOut);
 418     return hr;
 419 }
 420
 421 /**************************************************************************
 422  *  ISF_Desktop_fnGetAttributesOf
 423  */
 424 static HRESULT WINAPI ISF_Desktop_fnGetAttributesOf (IShellFolder2 * iface,
 425                 UINT cidl, LPCITEMIDLIST * apidl, DWORD * rgfInOut)
 426 {
 427     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 428     HRESULT hr = S_OK;
 429     static const DWORD dwDesktopAttributes =
 430         SFGAO_STORAGE | SFGAO_HASPROPSHEET | SFGAO_STORAGEANCESTOR |
 431         SFGAO_FILESYSANCESTOR | SFGAO_FOLDER | SFGAO_FILESYSTEM | SFGAO_HASSUBFOLDER;
 432     static const DWORD dwMyComputerAttributes =
 433         SFGAO_CANRENAME | SFGAO_CANDELETE | SFGAO_HASPROPSHEET |
 434         SFGAO_DROPTARGET | SFGAO_FILESYSANCESTOR | SFGAO_FOLDER | SFGAO_HASSUBFOLDER;
 435
 436     TRACE ("(%p)->(cidl=%d apidl=%p mask=%p (0x%08x))\n",
 437            This, cidl, apidl, rgfInOut, rgfInOut ? *rgfInOut : 0);
 438
 439     if (!rgfInOut)
 440         return E_INVALIDARG;
 441     if (cidl && !apidl)
 442         return E_INVALIDARG;
 443
 444     if (*rgfInOut == 0)
 445         *rgfInOut = ~0;
 446
 447     if(cidl == 0) {
 448         *rgfInOut &= dwDesktopAttributes;
 449     } else {
 450         while (cidl > 0 && *apidl) {
 451             pdump (*apidl);
 452             if (_ILIsDesktop(*apidl)) {
 453                 *rgfInOut &= dwDesktopAttributes;
 454             } else if (_ILIsMyComputer(*apidl)) {
 455                 *rgfInOut &= dwMyComputerAttributes;
 456             } else {
 457                 SHELL32_GetItemAttributes (_IShellFolder_ (This), *apidl, rgfInOut);
 458             }
 459             apidl++;
 460             cidl--;
 461         }
 462     }
 463     /* make sure SFGAO_VALIDATE is cleared, some apps depend on that */
 464     *rgfInOut &= ~SFGAO_VALIDATE;
 465
 466     TRACE ("-- result=0x%08x\n", *rgfInOut);
 467
 468     return hr;
 469 }
 470
 471 /**************************************************************************
 472  *    ISF_Desktop_fnGetUIObjectOf
 473  *
 474  * PARAMETERS
 475  *  HWND           hwndOwner, //[in ] Parent window for any output
 476  *  UINT           cidl,      //[in ] array size
 477  *  LPCITEMIDLIST* apidl,     //[in ] simple pidl array
 478  *  REFIID         riid,      //[in ] Requested Interface
 479  *  UINT*          prgfInOut, //[   ] reserved
 480  *  LPVOID*        ppvObject) //[out] Resulting Interface
 481  *
 482  */
 483 static HRESULT WINAPI ISF_Desktop_fnGetUIObjectOf (IShellFolder2 * iface,
 484                 HWND hwndOwner, UINT cidl, LPCITEMIDLIST * apidl,
 485                 REFIID riid, UINT * prgfInOut, LPVOID * ppvOut)
 486 {
 487     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 488
 489     LPITEMIDLIST pidl;
 490     IUnknown *pObj = NULL;
 491     HRESULT hr = E_INVALIDARG;
 492
 493     TRACE ("(%p)->(%p,%u,apidl=%p,%s,%p,%p)\n",
 494        This, hwndOwner, cidl, apidl, shdebugstr_guid (riid), prgfInOut, ppvOut);
 495
 496     if (!ppvOut)
 497         return hr;
 498
 499     *ppvOut = NULL;
 500
 501     if (IsEqualIID (riid, &IID_IContextMenu))
 502     {
 503         if (cidl > 0)
 504             pObj = (LPUNKNOWN) ISvItemCm_Constructor( (IShellFolder *) iface, This->pidlRoot, apidl, cidl);
 505         else
 506             pObj = (LPUNKNOWN) ISvBgCm_Constructor( (IShellFolder *) iface, TRUE);
 507         hr = S_OK;
 508     }
 509     else if (IsEqualIID (riid, &IID_IDataObject) && (cidl >= 1))
 510     {
 511         pObj = (LPUNKNOWN) IDataObject_Constructor( hwndOwner,
 512                                                   This->pidlRoot, apidl, cidl);
 513         hr = S_OK;
 514     }
 515     else if (IsEqualIID (riid, &IID_IExtractIconA) && (cidl == 1))
 516     {
 517         pidl = ILCombine (This->pidlRoot, apidl[0]);
 518         pObj = (LPUNKNOWN) IExtractIconA_Constructor (pidl);
 519         SHFree (pidl);
 520         hr = S_OK;
 521     }
 522     else if (IsEqualIID (riid, &IID_IExtractIconW) && (cidl == 1))
 523     {
 524         pidl = ILCombine (This->pidlRoot, apidl[0]);
 525         pObj = (LPUNKNOWN) IExtractIconW_Constructor (pidl);
 526         SHFree (pidl);
 527         hr = S_OK;
 528     }
 529     else if (IsEqualIID (riid, &IID_IDropTarget) && (cidl >= 1))
 530     {
 531         hr = IShellFolder_QueryInterface (iface,
 532                                           &IID_IDropTarget, (LPVOID *) & pObj);
 533     }
 534     else if ((IsEqualIID(riid,&IID_IShellLinkW) ||
 535               IsEqualIID(riid,&IID_IShellLinkA)) && (cidl == 1))
 536     {
 537         pidl = ILCombine (This->pidlRoot, apidl[0]);
 538         hr = IShellLink_ConstructFromFile(NULL, riid, pidl, (LPVOID*)&pObj);
 539         SHFree (pidl);
 540     }
 541     else
 542         hr = E_NOINTERFACE;
 543
 544     if (SUCCEEDED(hr) && !pObj)
 545         hr = E_OUTOFMEMORY;
 546
 547     *ppvOut = pObj;
 548     TRACE ("(%p)->hr=0x%08x\n", This, hr);
 549     return hr;
 550 }
 551
 552 /**************************************************************************
 553  *    ISF_Desktop_fnGetDisplayNameOf
 554  *
 555  * NOTES
 556  *    special case: pidl = null gives desktop-name back
 557  */
 558 static HRESULT WINAPI ISF_Desktop_fnGetDisplayNameOf (IShellFolder2 * iface,
 559                 LPCITEMIDLIST pidl, DWORD dwFlags, LPSTRRET strRet)
 560 {
 561     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 562     HRESULT hr = S_OK;
 563     WCHAR wszPath[MAX_PATH];
 564
 565     TRACE ("(%p)->(pidl=%p,0x%08x,%p)\n", This, pidl, dwFlags, strRet);
 566     pdump (pidl);
 567
 568     if (!strRet)
 569         return E_INVALIDARG;
 570
 571     if (_ILIsDesktop (pidl))
 572     {
 573         if ((GET_SHGDN_RELATION (dwFlags) == SHGDN_NORMAL) &&
 574             (GET_SHGDN_FOR (dwFlags) & SHGDN_FORPARSING))
 575             strcpyW(wszPath, This->sPathTarget);
 576         else
 577             HCR_GetClassNameW(&CLSID_ShellDesktop, wszPath, MAX_PATH);
 578     }
 579     else if (_ILIsPidlSimple (pidl))
 580     {
 581         GUID const *clsid;
 582
 583         if ((clsid = _ILGetGUIDPointer (pidl)))
 584         {
 585             if (GET_SHGDN_FOR (dwFlags) & SHGDN_FORPARSING)
 586             {
 587                 int bWantsForParsing;
 588
 589                 /*
 590                  * We can only get a filesystem path from a shellfolder if the
 591                  *  value WantsFORPARSING in CLSID\\{...}\\shellfolder exists.
 592                  *
 593                  * Exception: The MyComputer folder doesn't have this key,
 594                  *   but any other filesystem backed folder it needs it.
 595                  */
 596                 if (IsEqualIID (clsid, &CLSID_MyComputer))
 597                 {
 598                     bWantsForParsing = TRUE;
 599                 }
 600                 else
 601                 {
 602                     /* get the "WantsFORPARSING" flag from the registry */
 603                     static const WCHAR clsidW[] =
 604                      { 'C','L','S','I','D','\\',0 };
 605                     static const WCHAR shellfolderW[] =
 606                      { '\\','s','h','e','l','l','f','o','l','d','e','r',0 };
 607                     static const WCHAR wantsForParsingW[] =
 608                      { 'W','a','n','t','s','F','o','r','P','a','r','s','i','n',
 609                      'g',0 };
 610                     WCHAR szRegPath[100];
 611                     LONG r;
 612
 613                     lstrcpyW (szRegPath, clsidW);
 614                     SHELL32_GUIDToStringW (clsid, &szRegPath[6]);
 615                     lstrcatW (szRegPath, shellfolderW);
 616                     r = SHGetValueW(HKEY_CLASSES_ROOT, szRegPath,
 617                                     wantsForParsingW, NULL, NULL, NULL);
 618                     if (r == ERROR_SUCCESS)
 619                         bWantsForParsing = TRUE;
 620                     else
 621                         bWantsForParsing = FALSE;
 622                 }
 623
 624                 if ((GET_SHGDN_RELATION (dwFlags) == SHGDN_NORMAL) &&
 625                      bWantsForParsing)
 626                 {
 627                     /*
 628                      * we need the filesystem path to the destination folder.
 629                      * Only the folder itself can know it
 630                      */
 631                     hr = SHELL32_GetDisplayNameOfChild (iface, pidl, dwFlags,
 632                                                         wszPath,
 633                                                         MAX_PATH);
 634                 }
 635                 else
 636                 {
 637                     /* parsing name like ::{...} */
 638                     wszPath[0] = ':';
 639                     wszPath[1] = ':';
 640                     SHELL32_GUIDToStringW (clsid, &wszPath[2]);
 641                 }
 642             }
 643             else
 644             {
 645                 /* user friendly name */
 646                 HCR_GetClassNameW (clsid, wszPath, MAX_PATH);
 647             }
 648         }
 649         else
 650         {
 651             int cLen = 0;
 652
 653             /* file system folder or file rooted at the desktop */
 654             if ((GET_SHGDN_FOR(dwFlags) == SHGDN_FORPARSING) &&
 655                 (GET_SHGDN_RELATION(dwFlags) != SHGDN_INFOLDER))
 656             {
 657                 lstrcpynW(wszPath, This->sPathTarget, MAX_PATH - 1);
 658                 PathAddBackslashW(wszPath);
 659                 cLen = lstrlenW(wszPath);
 660             }
 661
 662             _ILSimpleGetTextW(pidl, wszPath + cLen, MAX_PATH - cLen);
 663
 664             if (!_ILIsFolder(pidl))
 665                 SHELL_FS_ProcessDisplayFilename(wszPath, dwFlags);
 666         }
 667     }
 668     else
 669     {
 670         /* a complex pidl, let the subfolder do the work */
 671         hr = SHELL32_GetDisplayNameOfChild (iface, pidl, dwFlags,
 672                                             wszPath, MAX_PATH);
 673     }
 674
 675     if (SUCCEEDED(hr))
 676     {
 677         BOOL defCharUsed;
 678         strRet->uType = STRRET_CSTR;
 679         if (!WideCharToMultiByte(CP_ACP, 0, wszPath, -1, strRet->u.cStr, MAX_PATH,
 680                                  NULL, &defCharUsed))
 681             strRet->u.cStr[0] = '\0';
 682         if (defCharUsed)
 683         {
 684             strRet->u.pOleStr = SHAlloc((lstrlenW(This->sPathTarget)+1) *
 685              sizeof(WCHAR));
 686             if (!strRet->u.pOleStr)
 687                 hr = E_OUTOFMEMORY;
 688             else
 689             {
 690                 strcpyW(strRet->u.pOleStr, This->sPathTarget);
 691                 strRet->uType = STRRET_WSTR;
 692             }
 693         }
 694     }
 695
 696     TRACE ("-- (%p)->(%s,0x%08x)\n", This,
 697      strRet->uType == STRRET_CSTR ? strRet->u.cStr :
 698      debugstr_w(strRet->u.pOleStr), hr);
 699     return hr;
 700 }
 701
 702 /**************************************************************************
 703  *  ISF_Desktop_fnSetNameOf
 704  *  Changes the name of a file object or subfolder, possibly changing its item
 705  *  identifier in the process.
 706  *
 707  * PARAMETERS
 708  *  HWND          hwndOwner,  //[in ] Owner window for output
 709  *  LPCITEMIDLIST pidl,       //[in ] simple pidl of item to change
 710  *  LPCOLESTR     lpszName,   //[in ] the items new display name
 711  *  DWORD         dwFlags,    //[in ] SHGNO formatting flags
 712  *  LPITEMIDLIST* ppidlOut)   //[out] simple pidl returned
 713  */
 714 static HRESULT WINAPI ISF_Desktop_fnSetNameOf (IShellFolder2 * iface,
 715                 HWND hwndOwner, LPCITEMIDLIST pidl,    /* simple pidl */
 716                 LPCOLESTR lpName, DWORD dwFlags, LPITEMIDLIST * pPidlOut)
 717 {
 718     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 719
 720     FIXME ("(%p)->(%p,pidl=%p,%s,%u,%p)\n", This, hwndOwner, pidl,
 721            debugstr_w (lpName), dwFlags, pPidlOut);
 722
 723     return E_FAIL;
 724 }
 725
 726 static HRESULT WINAPI ISF_Desktop_fnGetDefaultSearchGUID(IShellFolder2 *iface,
 727                 GUID * pguid)
 728 {
 729     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 730
 731     FIXME ("(%p)\n", This);
 732     return E_NOTIMPL;
 733 }
 734
 735 static HRESULT WINAPI ISF_Desktop_fnEnumSearches (IShellFolder2 *iface,
 736                 IEnumExtraSearch ** ppenum)
 737 {
 738     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 739     FIXME ("(%p)\n", This);
 740     return E_NOTIMPL;
 741 }
 742
 743 static HRESULT WINAPI ISF_Desktop_fnGetDefaultColumn (IShellFolder2 * iface,
 744                 DWORD dwRes, ULONG * pSort, ULONG * pDisplay)
 745 {
 746     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 747
 748     TRACE ("(%p)\n", This);
 749
 750     if (pSort)
 751         *pSort = 0;
 752     if (pDisplay)
 753         *pDisplay = 0;
 754
 755     return S_OK;
 756 }
 757 static HRESULT WINAPI ISF_Desktop_fnGetDefaultColumnState (
 758                 IShellFolder2 * iface, UINT iColumn, DWORD * pcsFlags)
 759 {
 760     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 761
 762     TRACE ("(%p)\n", This);
 763
 764     if (!pcsFlags || iColumn >= DESKTOPSHELLVIEWCOLUMNS)
 765     return E_INVALIDARG;
 766
 767     *pcsFlags = DesktopSFHeader[iColumn].pcsFlags;
 768
 769     return S_OK;
 770 }
 771
 772 static HRESULT WINAPI ISF_Desktop_fnGetDetailsEx (IShellFolder2 * iface,
 773                 LPCITEMIDLIST pidl, const SHCOLUMNID * pscid, VARIANT * pv)
 774 {
 775     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 776     FIXME ("(%p)\n", This);
 777
 778     return E_NOTIMPL;
 779 }
 780
 781 static HRESULT WINAPI ISF_Desktop_fnGetDetailsOf (IShellFolder2 * iface,
 782                 LPCITEMIDLIST pidl, UINT iColumn, SHELLDETAILS * psd)
 783 {
 784     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 785
 786     HRESULT hr = S_OK;
 787
 788     TRACE ("(%p)->(%p %i %p)\n", This, pidl, iColumn, psd);
 789
 790     if (!psd || iColumn >= DESKTOPSHELLVIEWCOLUMNS)
 791         return E_INVALIDARG;
 792
 793     if (!pidl)
 794     {
 795         psd->fmt = DesktopSFHeader[iColumn].fmt;
 796         psd->cxChar = DesktopSFHeader[iColumn].cxChar;
 797         psd->str.uType = STRRET_CSTR;
 798         LoadStringA (shell32_hInstance, DesktopSFHeader[iColumn].colnameid,
 799                      psd->str.u.cStr, MAX_PATH);
 800         return S_OK;
 801     }
 802
 803     /* the data from the pidl */
 804     psd->str.uType = STRRET_CSTR;
 805     switch (iColumn)
 806     {
 807     case 0:        /* name */
 808         hr = IShellFolder_GetDisplayNameOf(iface, pidl,
 809                    SHGDN_NORMAL | SHGDN_INFOLDER, &psd->str);
 810         break;
 811     case 1:        /* size */
 812         _ILGetFileSize (pidl, psd->str.u.cStr, MAX_PATH);
 813         break;
 814     case 2:        /* type */
 815         _ILGetFileType (pidl, psd->str.u.cStr, MAX_PATH);
 816         break;
 817     case 3:        /* date */
 818         _ILGetFileDate (pidl, psd->str.u.cStr, MAX_PATH);
 819         break;
 820     case 4:        /* attributes */
 821         _ILGetFileAttributes (pidl, psd->str.u.cStr, MAX_PATH);
 822         break;
 823     }
 824
 825     return hr;
 826 }
 827
 828 static HRESULT WINAPI ISF_Desktop_fnMapColumnToSCID (
 829                 IShellFolder2 * iface, UINT column, SHCOLUMNID * pscid)
 830 {
 831     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 832     FIXME ("(%p)\n", This);
 833     return E_NOTIMPL;
 834 }
 835
 836 static const IShellFolder2Vtbl vt_MCFldr_ShellFolder2 =
 837 {
 838     ISF_Desktop_fnQueryInterface,
 839     ISF_Desktop_fnAddRef,
 840     ISF_Desktop_fnRelease,
 841     ISF_Desktop_fnParseDisplayName,
 842     ISF_Desktop_fnEnumObjects,
 843     ISF_Desktop_fnBindToObject,
 844     ISF_Desktop_fnBindToStorage,
 845     ISF_Desktop_fnCompareIDs,
 846     ISF_Desktop_fnCreateViewObject,
 847     ISF_Desktop_fnGetAttributesOf,
 848     ISF_Desktop_fnGetUIObjectOf,
 849     ISF_Desktop_fnGetDisplayNameOf,
 850     ISF_Desktop_fnSetNameOf,
 851     /* ShellFolder2 */
 852     ISF_Desktop_fnGetDefaultSearchGUID,
 853     ISF_Desktop_fnEnumSearches,
 854     ISF_Desktop_fnGetDefaultColumn,
 855     ISF_Desktop_fnGetDefaultColumnState,
 856     ISF_Desktop_fnGetDetailsEx,
 857     ISF_Desktop_fnGetDetailsOf,
 858     ISF_Desktop_fnMapColumnToSCID
 859 };
 860
 861 /**************************************************************************
 862  *    ISF_Desktop_Constructor
 863  */
 864 HRESULT WINAPI ISF_Desktop_Constructor (
 865                 IUnknown * pUnkOuter, REFIID riid, LPVOID * ppv)
 866 {
 867     IGenericSFImpl *sf;
 868     WCHAR szMyPath[MAX_PATH];
 869     HRESULT r;
 870
 871     TRACE ("unkOut=%p %s\n", pUnkOuter, shdebugstr_guid (riid));
 872
 873     if (!ppv)
 874         return E_POINTER;
 875     if (pUnkOuter)
 876         return CLASS_E_NOAGGREGATION;
 877
 878     if (!SHGetSpecialFolderPathW( 0, szMyPath, CSIDL_DESKTOPDIRECTORY, TRUE ))
 879         return E_UNEXPECTED;
 880
 881     sf = LocalAlloc( LMEM_ZEROINIT, sizeof (IGenericSFImpl) );
 882     if (!sf)
 883         return E_OUTOFMEMORY;
 884
 885     sf->ref = 0;
 886     sf->lpVtbl = &vt_MCFldr_ShellFolder2;
 887     sf->pidlRoot = _ILCreateDesktop();    /* my qualified pidl */
 888     sf->sPathTarget = SHAlloc( (lstrlenW(szMyPath) + 1)*sizeof(WCHAR) );
 889     lstrcpyW( sf->sPathTarget, szMyPath );
 890
 891     r = IUnknown_QueryInterface( _IUnknown_(sf), riid, ppv );
 892     if (!SUCCEEDED (r))
 893     {
 894         IUnknown_Release( _IUnknown_(sf) );
 895         return r;
 896     }
 897
 898     TRACE ("--(%p)\n", sf);
 899     return S_OK;
 900 }