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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  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=%lu)\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=%lu)\n", This, refCount + 1);
 136
 137     if (!refCount)
 138     {
 139         TRACE ("-- destroying IShellFolder(%p)\n", This);
 140         if (This->pidlRoot)
 141             SHFree (This->pidlRoot);
 142         if (This->sPathTarget)
 143             SHFree (This->sPathTarget);
 144         LocalFree ((HLOCAL) This);
 145         return 0;
 146     }
 147     return refCount;
 148 }
 149
 150 /**************************************************************************
 151  *    ISF_Desktop_fnParseDisplayName
 152  *
 153  * NOTES
 154  *    "::{20D04FE0-3AEA-1069-A2D8-08002B30309D}" and "" binds
 155  *    to MyComputer
 156  */
 157 static HRESULT WINAPI ISF_Desktop_fnParseDisplayName (IShellFolder2 * iface,
 158                 HWND hwndOwner, LPBC pbc, LPOLESTR lpszDisplayName,
 159                 DWORD * pchEaten, LPITEMIDLIST * ppidl, DWORD * pdwAttributes)
 160 {
 161     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 162     WCHAR szElement[MAX_PATH];
 163     LPCWSTR szNext = NULL;
 164     LPITEMIDLIST pidlTemp = NULL;
 165     HRESULT hr = S_OK;
 166     CLSID clsid;
 167
 168     TRACE ("(%p)->(HWND=%p,%p,%p=%s,%p,pidl=%p,%p)\n",
 169            This, hwndOwner, pbc, lpszDisplayName, debugstr_w(lpszDisplayName),
 170            pchEaten, ppidl, pdwAttributes);
 171
 172     if (!lpszDisplayName || !ppidl)
 173         return E_INVALIDARG;
 174
 175     *ppidl = 0;
 176
 177     if (pchEaten)
 178         *pchEaten = 0;        /* strange but like the original */
 179
 180     if (lpszDisplayName[0] == ':' && lpszDisplayName[1] == ':')
 181     {
 182         szNext = GetNextElementW (lpszDisplayName, szElement, MAX_PATH);
 183         TRACE ("-- element: %s\n", debugstr_w (szElement));
 184         SHCLSIDFromStringW (szElement + 2, &clsid);
 185         pidlTemp = _ILCreateGuid (PT_GUID, &clsid);
 186     }
 187     else if (PathGetDriveNumberW (lpszDisplayName) >= 0)
 188     {
 189         /* it's a filesystem path with a drive. Let MyComputer/UnixDosFolder parse it */
 190         if (UNIXFS_is_rooted_at_desktop())
 191             pidlTemp = _ILCreateGuid(PT_GUID, &CLSID_UnixDosFolder);
 192         else
 193             pidlTemp = _ILCreateMyComputer ();
 194         szNext = lpszDisplayName;
 195     }
 196     else if (PathIsUNCW(lpszDisplayName))
 197     {
 198         pidlTemp = _ILCreateNetwork();
 199         szNext = lpszDisplayName;
 200     }
 201     else if( (pidlTemp = SHELL32_CreatePidlFromBindCtx(pbc, lpszDisplayName)) )
 202     {
 203         *ppidl = pidlTemp;
 204         return S_OK;
 205     }
 206     else
 207     {
 208         /* it's a filesystem path on the desktop. Let a FSFolder parse it */
 209
 210         if (*lpszDisplayName)
 211         {
 212             WCHAR szPath[MAX_PATH];
 213             LPWSTR pathPtr;
 214
 215             /* build a complete path to create a simple pidl */
 216             lstrcpynW(szPath, This->sPathTarget, MAX_PATH);
 217             pathPtr = PathAddBackslashW(szPath);
 218             if (pathPtr)
 219             {
 220                 lstrcpynW(pathPtr, lpszDisplayName, MAX_PATH - (pathPtr - szPath));
 221                 hr = _ILCreateFromPathW(szPath, &pidlTemp);
 222             }
 223             else
 224             {
 225                 /* should never reach here, but for completeness */
 226                 hr = HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
 227             }
 228         }
 229         else
 230             pidlTemp = _ILCreateMyComputer();
 231
 232         szNext = NULL;
 233     }
 234
 235     if (SUCCEEDED(hr) && pidlTemp)
 236     {
 237         if (szNext && *szNext)
 238         {
 239             hr = SHELL32_ParseNextElement(iface, hwndOwner, pbc,
 240                     &pidlTemp, (LPOLESTR) szNext, pchEaten, pdwAttributes);
 241         }
 242         else
 243         {
 244             if (pdwAttributes && *pdwAttributes)
 245                 hr = SHELL32_GetItemAttributes(_IShellFolder_ (This),
 246                                                pidlTemp, pdwAttributes);
 247         }
 248     }
 249
 250     *ppidl = pidlTemp;
 251
 252     TRACE ("(%p)->(-- ret=0x%08lx)\n", This, hr);
 253
 254     return hr;
 255 }
 256
 257 /**************************************************************************
 258  *  CreateDesktopEnumList()
 259  */
 260 static const WCHAR Desktop_NameSpaceW[] = { 'S','O','F','T','W','A','R','E',
 261  '\\','M','i','c','r','o','s','o','f','t','\\','W','i','n','d','o','w','s','\\',
 262  'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\','E','x','p','l',
 263  'o','r','e','r','\\','D','e','s','k','t','o','p','\\','N','a','m','e','s','p',
 264  'a','c','e','\0' };
 265
 266 static BOOL CreateDesktopEnumList(IEnumIDList *list, DWORD dwFlags)
 267 {
 268     BOOL ret = TRUE;
 269     WCHAR szPath[MAX_PATH];
 270
 271     TRACE("(%p)->(flags=0x%08lx) \n",list,dwFlags);
 272
 273     /* enumerate the root folders */
 274     if (dwFlags & SHCONTF_FOLDERS)
 275     {
 276         HKEY hkey;
 277         LONG r;
 278
 279         /* create the pidl for This item */
 280         ret = AddToEnumList(list, _ILCreateMyComputer());
 281
 282         r = RegOpenKeyExW(HKEY_LOCAL_MACHINE, Desktop_NameSpaceW,
 283                           0, KEY_READ, &hkey);
 284         if (ret && ERROR_SUCCESS == r)
 285         {
 286             WCHAR iid[50];
 287             int i=0;
 288             BOOL moreKeys = TRUE;
 289
 290             while (ret && moreKeys)
 291             {
 292                 DWORD size;
 293
 294                 size = sizeof (iid);
 295                 r = RegEnumKeyExW(hkey, i, iid, &size, 0, NULL, NULL, NULL);
 296                 if (ERROR_SUCCESS == r)
 297                 {
 298                     ret = AddToEnumList(list, _ILCreateGuidFromStrW(iid));
 299                     i++;
 300                 }
 301                 else if (ERROR_NO_MORE_ITEMS == r)
 302                     moreKeys = FALSE;
 303                 else
 304                     ret = FALSE;
 305             }
 306             RegCloseKey(hkey);
 307         }
 308     }
 309
 310     /* enumerate the elements in %windir%\desktop */
 311     SHGetSpecialFolderPathW(0, szPath, CSIDL_DESKTOPDIRECTORY, FALSE);
 312     ret = ret && CreateFolderEnumList(list, szPath, dwFlags);
 313
 314     return ret;
 315 }
 316
 317 /**************************************************************************
 318  *        ISF_Desktop_fnEnumObjects
 319  */
 320 static HRESULT WINAPI ISF_Desktop_fnEnumObjects (IShellFolder2 * iface,
 321                 HWND hwndOwner, DWORD dwFlags, LPENUMIDLIST * ppEnumIDList)
 322 {
 323     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 324
 325     TRACE ("(%p)->(HWND=%p flags=0x%08lx pplist=%p)\n",
 326            This, hwndOwner, dwFlags, ppEnumIDList);
 327
 328     *ppEnumIDList = IEnumIDList_Constructor();
 329     if (*ppEnumIDList)
 330         CreateDesktopEnumList(*ppEnumIDList, dwFlags);
 331
 332     TRACE ("-- (%p)->(new ID List: %p)\n", This, *ppEnumIDList);
 333
 334     return *ppEnumIDList ? S_OK : E_OUTOFMEMORY;
 335 }
 336
 337 /**************************************************************************
 338  *        ISF_Desktop_fnBindToObject
 339  */
 340 static HRESULT WINAPI ISF_Desktop_fnBindToObject (IShellFolder2 * iface,
 341                 LPCITEMIDLIST pidl, LPBC pbcReserved, REFIID riid, LPVOID * ppvOut)
 342 {
 343     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 344
 345     TRACE ("(%p)->(pidl=%p,%p,%s,%p)\n",
 346            This, pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 347
 348     return SHELL32_BindToChild( This->pidlRoot, This->sPathTarget, pidl, riid, ppvOut );
 349 }
 350
 351 /**************************************************************************
 352  *    ISF_Desktop_fnBindToStorage
 353  */
 354 static HRESULT WINAPI ISF_Desktop_fnBindToStorage (IShellFolder2 * iface,
 355                 LPCITEMIDLIST pidl, LPBC pbcReserved, REFIID riid, LPVOID * ppvOut)
 356 {
 357     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 358
 359     FIXME ("(%p)->(pidl=%p,%p,%s,%p) stub\n",
 360            This, pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 361
 362     *ppvOut = NULL;
 363     return E_NOTIMPL;
 364 }
 365
 366 /**************************************************************************
 367  *     ISF_Desktop_fnCompareIDs
 368  */
 369 static HRESULT WINAPI ISF_Desktop_fnCompareIDs (IShellFolder2 * iface,
 370                         LPARAM lParam, LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 371 {
 372     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 373     int nReturn;
 374
 375     TRACE ("(%p)->(0x%08lx,pidl1=%p,pidl2=%p)\n", This, lParam, pidl1, pidl2);
 376     nReturn = SHELL32_CompareIDs (_IShellFolder_ (This), lParam, pidl1, pidl2);
 377     TRACE ("-- %i\n", nReturn);
 378     return nReturn;
 379 }
 380
 381 /**************************************************************************
 382  *    ISF_Desktop_fnCreateViewObject
 383  */
 384 static HRESULT WINAPI ISF_Desktop_fnCreateViewObject (IShellFolder2 * iface,
 385                               HWND hwndOwner, REFIID riid, LPVOID * ppvOut)
 386 {
 387     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 388     LPSHELLVIEW pShellView;
 389     HRESULT hr = E_INVALIDARG;
 390
 391     TRACE ("(%p)->(hwnd=%p,%s,%p)\n",
 392            This, hwndOwner, shdebugstr_guid (riid), ppvOut);
 393
 394     if (!ppvOut)
 395         return hr;
 396
 397     *ppvOut = NULL;
 398
 399     if (IsEqualIID (riid, &IID_IDropTarget))
 400     {
 401         WARN ("IDropTarget not implemented\n");
 402         hr = E_NOTIMPL;
 403     }
 404     else if (IsEqualIID (riid, &IID_IContextMenu))
 405     {
 406         WARN ("IContextMenu not implemented\n");
 407         hr = E_NOTIMPL;
 408     }
 409     else if (IsEqualIID (riid, &IID_IShellView))
 410     {
 411         pShellView = IShellView_Constructor ((IShellFolder *) iface);
 412         if (pShellView)
 413         {
 414             hr = IShellView_QueryInterface (pShellView, riid, ppvOut);
 415             IShellView_Release (pShellView);
 416         }
 417     }
 418     TRACE ("-- (%p)->(interface=%p)\n", This, ppvOut);
 419     return hr;
 420 }
 421
 422 /**************************************************************************
 423  *  ISF_Desktop_fnGetAttributesOf
 424  */
 425 static HRESULT WINAPI ISF_Desktop_fnGetAttributesOf (IShellFolder2 * iface,
 426                 UINT cidl, LPCITEMIDLIST * apidl, DWORD * rgfInOut)
 427 {
 428     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 429     HRESULT hr = S_OK;
 430     static const DWORD dwDesktopAttributes =
 431         SFGAO_STORAGE | SFGAO_HASPROPSHEET | SFGAO_STORAGEANCESTOR |
 432         SFGAO_FILESYSANCESTOR | SFGAO_FOLDER | SFGAO_FILESYSTEM | SFGAO_HASSUBFOLDER;
 433
 434     TRACE ("(%p)->(cidl=%d apidl=%p mask=%p (0x%08lx))\n",
 435            This, cidl, apidl, rgfInOut, rgfInOut ? *rgfInOut : 0);
 436
 437     if (!rgfInOut)
 438         return E_INVALIDARG;
 439     if (cidl && !apidl)
 440         return E_INVALIDARG;
 441
 442     if (*rgfInOut == 0)
 443         *rgfInOut = ~0;
 444
 445     if(cidl == 0) {
 446         *rgfInOut &= dwDesktopAttributes;
 447     } else {
 448         while (cidl > 0 && *apidl) {
 449             pdump (*apidl);
 450             if (_ILIsDesktop(*apidl)) {
 451                 *rgfInOut &= dwDesktopAttributes;
 452             } else {
 453                 SHELL32_GetItemAttributes (_IShellFolder_ (This), *apidl, rgfInOut);
 454             }
 455             apidl++;
 456             cidl--;
 457         }
 458     }
 459     /* make sure SFGAO_VALIDATE is cleared, some apps depend on that */
 460     *rgfInOut &= ~SFGAO_VALIDATE;
 461
 462     TRACE ("-- result=0x%08lx\n", *rgfInOut);
 463
 464     return hr;
 465 }
 466
 467 /**************************************************************************
 468  *    ISF_Desktop_fnGetUIObjectOf
 469  *
 470  * PARAMETERS
 471  *  HWND           hwndOwner, //[in ] Parent window for any output
 472  *  UINT           cidl,      //[in ] array size
 473  *  LPCITEMIDLIST* apidl,     //[in ] simple pidl array
 474  *  REFIID         riid,      //[in ] Requested Interface
 475  *  UINT*          prgfInOut, //[   ] reserved
 476  *  LPVOID*        ppvObject) //[out] Resulting Interface
 477  *
 478  */
 479 static HRESULT WINAPI ISF_Desktop_fnGetUIObjectOf (IShellFolder2 * iface,
 480                 HWND hwndOwner, UINT cidl, LPCITEMIDLIST * apidl,
 481                 REFIID riid, UINT * prgfInOut, LPVOID * ppvOut)
 482 {
 483     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 484
 485     LPITEMIDLIST pidl;
 486     IUnknown *pObj = NULL;
 487     HRESULT hr = E_INVALIDARG;
 488
 489     TRACE ("(%p)->(%p,%u,apidl=%p,%s,%p,%p)\n",
 490        This, hwndOwner, cidl, apidl, shdebugstr_guid (riid), prgfInOut, ppvOut);
 491
 492     if (!ppvOut)
 493         return hr;
 494
 495     *ppvOut = NULL;
 496
 497     if (IsEqualIID (riid, &IID_IContextMenu))
 498     {
 499         if (cidl > 0)
 500             pObj = (LPUNKNOWN) ISvItemCm_Constructor( (IShellFolder *) iface, This->pidlRoot, apidl, cidl);
 501         else
 502             pObj = (LPUNKNOWN) ISvBgCm_Constructor( (IShellFolder *) iface, TRUE);
 503         hr = S_OK;
 504     }
 505     else if (IsEqualIID (riid, &IID_IDataObject) && (cidl >= 1))
 506     {
 507         pObj = (LPUNKNOWN) IDataObject_Constructor( hwndOwner,
 508                                                   This->pidlRoot, apidl, cidl);
 509         hr = S_OK;
 510     }
 511     else if (IsEqualIID (riid, &IID_IExtractIconA) && (cidl == 1))
 512     {
 513         pidl = ILCombine (This->pidlRoot, apidl[0]);
 514         pObj = (LPUNKNOWN) IExtractIconA_Constructor (pidl);
 515         SHFree (pidl);
 516         hr = S_OK;
 517     }
 518     else if (IsEqualIID (riid, &IID_IExtractIconW) && (cidl == 1))
 519     {
 520         pidl = ILCombine (This->pidlRoot, apidl[0]);
 521         pObj = (LPUNKNOWN) IExtractIconW_Constructor (pidl);
 522         SHFree (pidl);
 523         hr = S_OK;
 524     }
 525     else if (IsEqualIID (riid, &IID_IDropTarget) && (cidl >= 1))
 526     {
 527         hr = IShellFolder_QueryInterface (iface,
 528                                           &IID_IDropTarget, (LPVOID *) & pObj);
 529     }
 530     else if ((IsEqualIID(riid,&IID_IShellLinkW) ||
 531               IsEqualIID(riid,&IID_IShellLinkA)) && (cidl == 1))
 532     {
 533         pidl = ILCombine (This->pidlRoot, apidl[0]);
 534         hr = IShellLink_ConstructFromFile(NULL, riid, pidl, (LPVOID*)&pObj);
 535         SHFree (pidl);
 536     }
 537     else
 538         hr = E_NOINTERFACE;
 539
 540     if (SUCCEEDED(hr) && !pObj)
 541         hr = E_OUTOFMEMORY;
 542
 543     *ppvOut = pObj;
 544     TRACE ("(%p)->hr=0x%08lx\n", This, hr);
 545     return hr;
 546 }
 547
 548 /**************************************************************************
 549  *    ISF_Desktop_fnGetDisplayNameOf
 550  *
 551  * NOTES
 552  *    special case: pidl = null gives desktop-name back
 553  */
 554 static HRESULT WINAPI ISF_Desktop_fnGetDisplayNameOf (IShellFolder2 * iface,
 555                 LPCITEMIDLIST pidl, DWORD dwFlags, LPSTRRET strRet)
 556 {
 557     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 558     HRESULT hr = S_OK;
 559
 560     TRACE ("(%p)->(pidl=%p,0x%08lx,%p)\n", This, pidl, dwFlags, strRet);
 561     pdump (pidl);
 562
 563     if (!strRet)
 564         return E_INVALIDARG;
 565
 566     strRet->uType = STRRET_CSTR;
 567     if (_ILIsDesktop (pidl))
 568     {
 569         if ((GET_SHGDN_RELATION (dwFlags) == SHGDN_NORMAL) &&
 570             (GET_SHGDN_FOR (dwFlags) & SHGDN_FORPARSING))
 571         {
 572             BOOL defCharUsed;
 573
 574             WideCharToMultiByte( CP_ACP, 0, This->sPathTarget, -1,
 575                                  strRet->u.cStr, MAX_PATH, NULL, &defCharUsed );
 576             if (defCharUsed)
 577             {
 578                 strRet->u.pOleStr = SHAlloc((lstrlenW(This->sPathTarget)+1) *
 579                  sizeof(WCHAR));
 580                 if (!strRet->u.pOleStr)
 581                     hr = E_OUTOFMEMORY;
 582                 else
 583                 {
 584                     strcpyW(strRet->u.pOleStr, This->sPathTarget);
 585                     strRet->uType = STRRET_WSTR;
 586                 }
 587             }
 588         }
 589         else
 590         {
 591             HCR_GetClassNameA(&CLSID_ShellDesktop, strRet->u.cStr, MAX_PATH);
 592         }
 593     }
 594     else if (_ILIsPidlSimple (pidl))
 595     {
 596         GUID const *clsid;
 597
 598         if ((clsid = _ILGetGUIDPointer (pidl)))
 599         {
 600             if (GET_SHGDN_FOR (dwFlags) & SHGDN_FORPARSING)
 601             {
 602                 int bWantsForParsing;
 603
 604                 /*
 605                  * We can only get a filesystem path from a shellfolder if the
 606                  *  value WantsFORPARSING in CLSID\\{...}\\shellfolder exists.
 607                  *
 608                  * Exception: The MyComputer folder doesn't have this key,
 609                  *   but any other filesystem backed folder it needs it.
 610                  */
 611                 if (IsEqualIID (clsid, &CLSID_MyComputer))
 612                 {
 613                     bWantsForParsing = TRUE;
 614                 }
 615                 else
 616                 {
 617                     /* get the "WantsFORPARSING" flag from the registry */
 618                     static const WCHAR clsidW[] =
 619                      { 'C','L','S','I','D','\\',0 };
 620                     static const WCHAR shellfolderW[] =
 621                      { '\\','s','h','e','l','l','f','o','l','d','e','r',0 };
 622                     static const WCHAR wantsForParsingW[] =
 623                      { 'W','a','n','t','s','F','o','r','P','a','r','s','i','n',
 624                      'g',0 };
 625                     WCHAR szRegPath[100];
 626                     LONG r;
 627
 628                     lstrcpyW (szRegPath, clsidW);
 629                     SHELL32_GUIDToStringW (clsid, &szRegPath[6]);
 630                     lstrcatW (szRegPath, shellfolderW);
 631                     r = SHGetValueW(HKEY_CLASSES_ROOT, szRegPath,
 632                                     wantsForParsingW, NULL, NULL, NULL);
 633                     if (r == ERROR_SUCCESS)
 634                         bWantsForParsing = TRUE;
 635                     else
 636                         bWantsForParsing = FALSE;
 637                 }
 638
 639                 if ((GET_SHGDN_RELATION (dwFlags) == SHGDN_NORMAL) &&
 640                      bWantsForParsing)
 641                 {
 642                     /*
 643                      * we need the filesystem path to the destination folder.
 644                      * Only the folder itself can know it
 645                      */
 646                     hr = SHELL32_GetDisplayNameOfChild (iface, pidl, dwFlags,
 647                                                         strRet->u.cStr,
 648                                                         MAX_PATH);
 649                 }
 650                 else
 651                 {
 652                     /* parsing name like ::{...} */
 653                     lstrcpyA (strRet->u.cStr, "::");
 654                     SHELL32_GUIDToStringA (clsid, &strRet->u.cStr[2]);
 655                 }
 656             }
 657             else
 658             {
 659                 /* user friendly name */
 660                 HCR_GetClassNameA (clsid, strRet->u.cStr, MAX_PATH);
 661             }
 662         }
 663         else
 664         {
 665             int cLen = 0;
 666
 667             /* file system folder or file rooted at the desktop */
 668             if ((GET_SHGDN_FOR(dwFlags) == SHGDN_FORPARSING) &&
 669                 (GET_SHGDN_RELATION(dwFlags) != SHGDN_INFOLDER))
 670             {
 671                 WideCharToMultiByte(CP_ACP, 0, This->sPathTarget, -1, strRet->u.cStr, MAX_PATH,
 672                                     NULL, NULL);
 673                 PathAddBackslashA(strRet->u.cStr);
 674                 cLen = lstrlenA(strRet->u.cStr);
 675             }
 676
 677             _ILSimpleGetText (pidl, strRet->u.cStr + cLen, MAX_PATH - cLen);
 678
 679             if (!_ILIsFolder(pidl))
 680                 SHELL_FS_ProcessDisplayFilename(strRet->u.cStr, dwFlags);
 681         }
 682     }
 683     else
 684     {
 685         /* a complex pidl, let the subfolder do the work */
 686         hr = SHELL32_GetDisplayNameOfChild (iface, pidl, dwFlags,
 687          strRet->u.cStr, MAX_PATH);
 688     }
 689
 690     TRACE ("-- (%p)->(%s,0x%08lx)\n", This,
 691      strRet->uType == STRRET_CSTR ? strRet->u.cStr :
 692      debugstr_w(strRet->u.pOleStr), hr);
 693     return hr;
 694 }
 695
 696 /**************************************************************************
 697  *  ISF_Desktop_fnSetNameOf
 698  *  Changes the name of a file object or subfolder, possibly changing its item
 699  *  identifier in the process.
 700  *
 701  * PARAMETERS
 702  *  HWND          hwndOwner,  //[in ] Owner window for output
 703  *  LPCITEMIDLIST pidl,       //[in ] simple pidl of item to change
 704  *  LPCOLESTR     lpszName,   //[in ] the items new display name
 705  *  DWORD         dwFlags,    //[in ] SHGNO formatting flags
 706  *  LPITEMIDLIST* ppidlOut)   //[out] simple pidl returned
 707  */
 708 static HRESULT WINAPI ISF_Desktop_fnSetNameOf (IShellFolder2 * iface,
 709                 HWND hwndOwner, LPCITEMIDLIST pidl,    /* simple pidl */
 710                 LPCOLESTR lpName, DWORD dwFlags, LPITEMIDLIST * pPidlOut)
 711 {
 712     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 713
 714     FIXME ("(%p)->(%p,pidl=%p,%s,%lu,%p)\n", This, hwndOwner, pidl,
 715            debugstr_w (lpName), dwFlags, pPidlOut);
 716
 717     return E_FAIL;
 718 }
 719
 720 static HRESULT WINAPI ISF_Desktop_fnGetDefaultSearchGUID(IShellFolder2 *iface,
 721                 GUID * pguid)
 722 {
 723     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 724
 725     FIXME ("(%p)\n", This);
 726     return E_NOTIMPL;
 727 }
 728
 729 static HRESULT WINAPI ISF_Desktop_fnEnumSearches (IShellFolder2 *iface,
 730                 IEnumExtraSearch ** ppenum)
 731 {
 732     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 733     FIXME ("(%p)\n", This);
 734     return E_NOTIMPL;
 735 }
 736
 737 static HRESULT WINAPI ISF_Desktop_fnGetDefaultColumn (IShellFolder2 * iface,
 738                 DWORD dwRes, ULONG * pSort, ULONG * pDisplay)
 739 {
 740     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 741
 742     TRACE ("(%p)\n", This);
 743
 744     if (pSort)
 745         *pSort = 0;
 746     if (pDisplay)
 747         *pDisplay = 0;
 748
 749     return S_OK;
 750 }
 751 static HRESULT WINAPI ISF_Desktop_fnGetDefaultColumnState (
 752                 IShellFolder2 * iface, UINT iColumn, DWORD * pcsFlags)
 753 {
 754     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 755
 756     TRACE ("(%p)\n", This);
 757
 758     if (!pcsFlags || iColumn >= DESKTOPSHELLVIEWCOLUMNS)
 759     return E_INVALIDARG;
 760
 761     *pcsFlags = DesktopSFHeader[iColumn].pcsFlags;
 762
 763     return S_OK;
 764 }
 765
 766 static HRESULT WINAPI ISF_Desktop_fnGetDetailsEx (IShellFolder2 * iface,
 767                 LPCITEMIDLIST pidl, const SHCOLUMNID * pscid, VARIANT * pv)
 768 {
 769     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 770     FIXME ("(%p)\n", This);
 771
 772     return E_NOTIMPL;
 773 }
 774
 775 static HRESULT WINAPI ISF_Desktop_fnGetDetailsOf (IShellFolder2 * iface,
 776                 LPCITEMIDLIST pidl, UINT iColumn, SHELLDETAILS * psd)
 777 {
 778     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 779
 780     HRESULT hr = S_OK;
 781
 782     TRACE ("(%p)->(%p %i %p)\n", This, pidl, iColumn, psd);
 783
 784     if (!psd || iColumn >= DESKTOPSHELLVIEWCOLUMNS)
 785         return E_INVALIDARG;
 786
 787     if (!pidl)
 788     {
 789         psd->fmt = DesktopSFHeader[iColumn].fmt;
 790         psd->cxChar = DesktopSFHeader[iColumn].cxChar;
 791         psd->str.uType = STRRET_CSTR;
 792         LoadStringA (shell32_hInstance, DesktopSFHeader[iColumn].colnameid,
 793                      psd->str.u.cStr, MAX_PATH);
 794         return S_OK;
 795     }
 796
 797     /* the data from the pidl */
 798     psd->str.uType = STRRET_CSTR;
 799     switch (iColumn)
 800     {
 801     case 0:        /* name */
 802         hr = IShellFolder_GetDisplayNameOf(iface, pidl,
 803                    SHGDN_NORMAL | SHGDN_INFOLDER, &psd->str);
 804         break;
 805     case 1:        /* size */
 806         _ILGetFileSize (pidl, psd->str.u.cStr, MAX_PATH);
 807         break;
 808     case 2:        /* type */
 809         _ILGetFileType (pidl, psd->str.u.cStr, MAX_PATH);
 810         break;
 811     case 3:        /* date */
 812         _ILGetFileDate (pidl, psd->str.u.cStr, MAX_PATH);
 813         break;
 814     case 4:        /* attributes */
 815         _ILGetFileAttributes (pidl, psd->str.u.cStr, MAX_PATH);
 816         break;
 817     }
 818
 819     return hr;
 820 }
 821
 822 static HRESULT WINAPI ISF_Desktop_fnMapColumnToSCID (
 823                 IShellFolder2 * iface, UINT column, SHCOLUMNID * pscid)
 824 {
 825     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 826     FIXME ("(%p)\n", This);
 827     return E_NOTIMPL;
 828 }
 829
 830 static const IShellFolder2Vtbl vt_MCFldr_ShellFolder2 =
 831 {
 832     ISF_Desktop_fnQueryInterface,
 833     ISF_Desktop_fnAddRef,
 834     ISF_Desktop_fnRelease,
 835     ISF_Desktop_fnParseDisplayName,
 836     ISF_Desktop_fnEnumObjects,
 837     ISF_Desktop_fnBindToObject,
 838     ISF_Desktop_fnBindToStorage,
 839     ISF_Desktop_fnCompareIDs,
 840     ISF_Desktop_fnCreateViewObject,
 841     ISF_Desktop_fnGetAttributesOf,
 842     ISF_Desktop_fnGetUIObjectOf,
 843     ISF_Desktop_fnGetDisplayNameOf,
 844     ISF_Desktop_fnSetNameOf,
 845     /* ShellFolder2 */
 846     ISF_Desktop_fnGetDefaultSearchGUID,
 847     ISF_Desktop_fnEnumSearches,
 848     ISF_Desktop_fnGetDefaultColumn,
 849     ISF_Desktop_fnGetDefaultColumnState,
 850     ISF_Desktop_fnGetDetailsEx,
 851     ISF_Desktop_fnGetDetailsOf,
 852     ISF_Desktop_fnMapColumnToSCID
 853 };
 854
 855 /**************************************************************************
 856  *    ISF_Desktop_Constructor
 857  */
 858 HRESULT WINAPI ISF_Desktop_Constructor (
 859                 IUnknown * pUnkOuter, REFIID riid, LPVOID * ppv)
 860 {
 861     IGenericSFImpl *sf;
 862     WCHAR szMyPath[MAX_PATH];
 863     HRESULT r;
 864
 865     TRACE ("unkOut=%p %s\n", pUnkOuter, shdebugstr_guid (riid));
 866
 867     if (!ppv)
 868         return E_POINTER;
 869     if (pUnkOuter)
 870         return CLASS_E_NOAGGREGATION;
 871
 872     if (!SHGetSpecialFolderPathW( 0, szMyPath, CSIDL_DESKTOPDIRECTORY, TRUE ))
 873         return E_UNEXPECTED;
 874
 875     sf = LocalAlloc( LMEM_ZEROINIT, sizeof (IGenericSFImpl) );
 876     if (!sf)
 877         return E_OUTOFMEMORY;
 878
 879     sf->ref = 0;
 880     sf->lpVtbl = &vt_MCFldr_ShellFolder2;
 881     sf->pidlRoot = _ILCreateDesktop();    /* my qualified pidl */
 882     sf->sPathTarget = SHAlloc( (lstrlenW(szMyPath) + 1)*sizeof(WCHAR) );
 883     lstrcpyW( sf->sPathTarget, szMyPath );
 884
 885     r = IUnknown_QueryInterface( _IUnknown_(sf), riid, ppv );
 886     if (!SUCCEEDED (r))
 887     {
 888         IUnknown_Release( _IUnknown_(sf) );
 889         return r;
 890     }
 891
 892     TRACE ("--(%p)\n", sf);
 893     return S_OK;
 894 }