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     /* both paths are parsible from the desktop */
  67     LPWSTR sPathTarget;     /* complete path to target used for enumeration and ChangeNotify */
  68     LPITEMIDLIST pidlRoot;  /* absolute pidl */
  69
  70     UINT cfShellIDList;        /* clipboardformat for IDropTarget */
  71     BOOL fAcceptFmt;        /* flag for pending Drop */
  72 } IGenericSFImpl;
  73
  74 #define _IUnknown_(This)    (IShellFolder*)&(This->lpVtbl)
  75 #define _IShellFolder_(This)    (IShellFolder*)&(This->lpVtbl)
  76
  77 static const shvheader DesktopSFHeader[] = {
  78     {IDS_SHV_COLUMN1, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 15},
  79     {IDS_SHV_COLUMN2, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 10},
  80     {IDS_SHV_COLUMN3, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 10},
  81     {IDS_SHV_COLUMN4, SHCOLSTATE_TYPE_DATE | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 12},
  82     {IDS_SHV_COLUMN5, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 5}
  83 };
  84
  85 #define DESKTOPSHELLVIEWCOLUMNS 5
  86
  87 /**************************************************************************
  88  *    ISF_Desktop_fnQueryInterface
  89  *
  90  * NOTES supports not IPersist/IPersistFolder
  91  */
  92 static HRESULT WINAPI ISF_Desktop_fnQueryInterface(
  93                 IShellFolder2 * iface, REFIID riid, LPVOID * ppvObj)
  94 {
  95     IGenericSFImpl *This = (IGenericSFImpl *)iface;
  96
  97     TRACE ("(%p)->(%s,%p)\n", This, shdebugstr_guid (riid), ppvObj);
  98
  99     *ppvObj = NULL;
 100
 101     if (IsEqualIID (riid, &IID_IUnknown) ||
 102         IsEqualIID (riid, &IID_IShellFolder) ||
 103         IsEqualIID (riid, &IID_IShellFolder2))
 104     {
 105         *ppvObj = This;
 106     }
 107
 108     if (*ppvObj)
 109     {
 110         IUnknown_AddRef ((IUnknown *) (*ppvObj));
 111         TRACE ("-- Interface: (%p)->(%p)\n", ppvObj, *ppvObj);
 112         return S_OK;
 113     }
 114     TRACE ("-- Interface: E_NOINTERFACE\n");
 115     return E_NOINTERFACE;
 116 }
 117
 118 static ULONG WINAPI ISF_Desktop_fnAddRef (IShellFolder2 * iface)
 119 {
 120     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 121     ULONG refCount = InterlockedIncrement(&This->ref);
 122
 123     TRACE ("(%p)->(count=%u)\n", This, refCount - 1);
 124
 125     return refCount;
 126 }
 127
 128 static ULONG WINAPI ISF_Desktop_fnRelease (IShellFolder2 * iface)
 129 {
 130     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 131     ULONG refCount = InterlockedDecrement(&This->ref);
 132
 133     TRACE ("(%p)->(count=%u)\n", This, refCount + 1);
 134
 135     if (!refCount)
 136     {
 137         TRACE ("-- destroying IShellFolder(%p)\n", This);
 138         SHFree (This->pidlRoot);
 139         SHFree (This->sPathTarget);
 140         LocalFree ((HLOCAL) This);
 141         return 0;
 142     }
 143     return refCount;
 144 }
 145
 146 /**************************************************************************
 147  *    ISF_Desktop_fnParseDisplayName
 148  *
 149  * NOTES
 150  *    "::{20D04FE0-3AEA-1069-A2D8-08002B30309D}" and "" binds
 151  *    to MyComputer
 152  */
 153 static HRESULT WINAPI ISF_Desktop_fnParseDisplayName (IShellFolder2 * iface,
 154                 HWND hwndOwner, LPBC pbc, LPOLESTR lpszDisplayName,
 155                 DWORD * pchEaten, LPITEMIDLIST * ppidl, DWORD * pdwAttributes)
 156 {
 157     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 158     WCHAR szElement[MAX_PATH];
 159     LPCWSTR szNext = NULL;
 160     LPITEMIDLIST pidlTemp = NULL;
 161     HRESULT hr = S_OK;
 162     CLSID clsid;
 163
 164     TRACE ("(%p)->(HWND=%p,%p,%p=%s,%p,pidl=%p,%p)\n",
 165            This, hwndOwner, pbc, lpszDisplayName, debugstr_w(lpszDisplayName),
 166            pchEaten, ppidl, pdwAttributes);
 167
 168     if (!lpszDisplayName || !ppidl)
 169         return E_INVALIDARG;
 170
 171     *ppidl = 0;
 172
 173     if (pchEaten)
 174         *pchEaten = 0;        /* strange but like the original */
 175
 176     if (lpszDisplayName[0] == ':' && lpszDisplayName[1] == ':')
 177     {
 178         szNext = GetNextElementW (lpszDisplayName, szElement, MAX_PATH);
 179         TRACE ("-- element: %s\n", debugstr_w (szElement));
 180         SHCLSIDFromStringW (szElement + 2, &clsid);
 181         pidlTemp = _ILCreateGuid (PT_GUID, &clsid);
 182     }
 183     else if (PathGetDriveNumberW (lpszDisplayName) >= 0)
 184     {
 185         /* it's a filesystem path with a drive. Let MyComputer/UnixDosFolder parse it */
 186         if (UNIXFS_is_rooted_at_desktop())
 187             pidlTemp = _ILCreateGuid(PT_GUID, &CLSID_UnixDosFolder);
 188         else
 189             pidlTemp = _ILCreateMyComputer ();
 190         szNext = lpszDisplayName;
 191     }
 192     else if (PathIsUNCW(lpszDisplayName))
 193     {
 194         pidlTemp = _ILCreateNetwork();
 195         szNext = lpszDisplayName;
 196     }
 197     else if( (pidlTemp = SHELL32_CreatePidlFromBindCtx(pbc, lpszDisplayName)) )
 198     {
 199         *ppidl = pidlTemp;
 200         return S_OK;
 201     }
 202     else
 203     {
 204         /* it's a filesystem path on the desktop. Let a FSFolder parse it */
 205
 206         if (*lpszDisplayName)
 207         {
 208             WCHAR szPath[MAX_PATH];
 209             LPWSTR pathPtr;
 210
 211             /* build a complete path to create a simple pidl */
 212             lstrcpynW(szPath, This->sPathTarget, MAX_PATH);
 213             pathPtr = PathAddBackslashW(szPath);
 214             if (pathPtr)
 215             {
 216                 lstrcpynW(pathPtr, lpszDisplayName, MAX_PATH - (pathPtr - szPath));
 217                 hr = _ILCreateFromPathW(szPath, &pidlTemp);
 218             }
 219             else
 220             {
 221                 /* should never reach here, but for completeness */
 222                 hr = HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
 223             }
 224         }
 225         else
 226             pidlTemp = _ILCreateMyComputer();
 227
 228         szNext = NULL;
 229     }
 230
 231     if (SUCCEEDED(hr) && pidlTemp)
 232     {
 233         if (szNext && *szNext)
 234         {
 235             hr = SHELL32_ParseNextElement(iface, hwndOwner, pbc,
 236                     &pidlTemp, (LPOLESTR) szNext, pchEaten, pdwAttributes);
 237         }
 238         else
 239         {
 240             if (pdwAttributes && *pdwAttributes)
 241                 hr = SHELL32_GetItemAttributes(_IShellFolder_ (This),
 242                                                pidlTemp, pdwAttributes);
 243         }
 244     }
 245
 246     *ppidl = pidlTemp;
 247
 248     TRACE ("(%p)->(-- ret=0x%08x)\n", This, hr);
 249
 250     return hr;
 251 }
 252
 253 /**************************************************************************
 254  *  CreateDesktopEnumList()
 255  */
 256 static const WCHAR Desktop_NameSpaceW[] = { 'S','O','F','T','W','A','R','E',
 257  '\\','M','i','c','r','o','s','o','f','t','\\','W','i','n','d','o','w','s','\\',
 258  'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\','E','x','p','l',
 259  'o','r','e','r','\\','D','e','s','k','t','o','p','\\','N','a','m','e','s','p',
 260  'a','c','e','\0' };
 261
 262 static BOOL CreateDesktopEnumList(IEnumIDList *list, DWORD dwFlags)
 263 {
 264     BOOL ret = TRUE;
 265     WCHAR szPath[MAX_PATH];
 266
 267     TRACE("(%p)->(flags=0x%08x)\n", list, dwFlags);
 268
 269     /* enumerate the root folders */
 270     if (dwFlags & SHCONTF_FOLDERS)
 271     {
 272         HKEY hkey;
 273         UINT i;
 274
 275         /* create the pidl for This item */
 276         ret = AddToEnumList(list, _ILCreateMyComputer());
 277
 278         for (i=0; i<2; i++) {
 279             if (ret && !RegOpenKeyExW(i == 0 ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER,
 280                                       Desktop_NameSpaceW, 0, KEY_READ, &hkey))
 281             {
 282                 WCHAR iid[50];
 283                 int i=0;
 284
 285                 while (ret)
 286                 {
 287                     DWORD size;
 288                     LONG r;
 289
 290                     size = sizeof (iid);
 291                     r = RegEnumKeyExW(hkey, i, iid, &size, 0, NULL, NULL, NULL);
 292                     if (ERROR_SUCCESS == r)
 293                     {
 294                         ret = AddToEnumList(list, _ILCreateGuidFromStrW(iid));
 295                         i++;
 296                     }
 297                     else if (ERROR_NO_MORE_ITEMS == r)
 298                         break;
 299                     else
 300                         ret = FALSE;
 301                 }
 302                 RegCloseKey(hkey);
 303             }
 304         }
 305     }
 306
 307     /* enumerate the elements in %windir%\desktop */
 308     SHGetSpecialFolderPathW(0, szPath, CSIDL_DESKTOPDIRECTORY, FALSE);
 309     ret = ret && CreateFolderEnumList(list, szPath, dwFlags);
 310
 311     return ret;
 312 }
 313
 314 /**************************************************************************
 315  *        ISF_Desktop_fnEnumObjects
 316  */
 317 static HRESULT WINAPI ISF_Desktop_fnEnumObjects (IShellFolder2 * iface,
 318                 HWND hwndOwner, DWORD dwFlags, LPENUMIDLIST * ppEnumIDList)
 319 {
 320     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 321
 322     TRACE ("(%p)->(HWND=%p flags=0x%08x pplist=%p)\n",
 323            This, hwndOwner, dwFlags, ppEnumIDList);
 324
 325     *ppEnumIDList = IEnumIDList_Constructor();
 326     if (*ppEnumIDList)
 327         CreateDesktopEnumList(*ppEnumIDList, dwFlags);
 328
 329     TRACE ("-- (%p)->(new ID List: %p)\n", This, *ppEnumIDList);
 330
 331     return *ppEnumIDList ? S_OK : E_OUTOFMEMORY;
 332 }
 333
 334 /**************************************************************************
 335  *        ISF_Desktop_fnBindToObject
 336  */
 337 static HRESULT WINAPI ISF_Desktop_fnBindToObject (IShellFolder2 * iface,
 338                 LPCITEMIDLIST pidl, LPBC pbcReserved, REFIID riid, LPVOID * ppvOut)
 339 {
 340     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 341
 342     TRACE ("(%p)->(pidl=%p,%p,%s,%p)\n",
 343            This, pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 344
 345     return SHELL32_BindToChild( This->pidlRoot, This->sPathTarget, pidl, riid, ppvOut );
 346 }
 347
 348 /**************************************************************************
 349  *    ISF_Desktop_fnBindToStorage
 350  */
 351 static HRESULT WINAPI ISF_Desktop_fnBindToStorage (IShellFolder2 * iface,
 352                 LPCITEMIDLIST pidl, LPBC pbcReserved, REFIID riid, LPVOID * ppvOut)
 353 {
 354     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 355
 356     FIXME ("(%p)->(pidl=%p,%p,%s,%p) stub\n",
 357            This, pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 358
 359     *ppvOut = NULL;
 360     return E_NOTIMPL;
 361 }
 362
 363 /**************************************************************************
 364  *     ISF_Desktop_fnCompareIDs
 365  */
 366 static HRESULT WINAPI ISF_Desktop_fnCompareIDs (IShellFolder2 * iface,
 367                         LPARAM lParam, LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 368 {
 369     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 370     int nReturn;
 371
 372     TRACE ("(%p)->(0x%08lx,pidl1=%p,pidl2=%p)\n", This, lParam, pidl1, pidl2);
 373     nReturn = SHELL32_CompareIDs (_IShellFolder_ (This), lParam, pidl1, pidl2);
 374     TRACE ("-- %i\n", nReturn);
 375     return nReturn;
 376 }
 377
 378 /**************************************************************************
 379  *    ISF_Desktop_fnCreateViewObject
 380  */
 381 static HRESULT WINAPI ISF_Desktop_fnCreateViewObject (IShellFolder2 * iface,
 382                               HWND hwndOwner, REFIID riid, LPVOID * ppvOut)
 383 {
 384     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 385     LPSHELLVIEW pShellView;
 386     HRESULT hr = E_INVALIDARG;
 387
 388     TRACE ("(%p)->(hwnd=%p,%s,%p)\n",
 389            This, hwndOwner, shdebugstr_guid (riid), ppvOut);
 390
 391     if (!ppvOut)
 392         return hr;
 393
 394     *ppvOut = NULL;
 395
 396     if (IsEqualIID (riid, &IID_IDropTarget))
 397     {
 398         WARN ("IDropTarget not implemented\n");
 399         hr = E_NOTIMPL;
 400     }
 401     else if (IsEqualIID (riid, &IID_IContextMenu))
 402     {
 403         WARN ("IContextMenu not implemented\n");
 404         hr = E_NOTIMPL;
 405     }
 406     else if (IsEqualIID (riid, &IID_IShellView))
 407     {
 408         pShellView = IShellView_Constructor ((IShellFolder *) iface);
 409         if (pShellView)
 410         {
 411             hr = IShellView_QueryInterface (pShellView, riid, ppvOut);
 412             IShellView_Release (pShellView);
 413         }
 414     }
 415     TRACE ("-- (%p)->(interface=%p)\n", This, ppvOut);
 416     return hr;
 417 }
 418
 419 /**************************************************************************
 420  *  ISF_Desktop_fnGetAttributesOf
 421  */
 422 static HRESULT WINAPI ISF_Desktop_fnGetAttributesOf (IShellFolder2 * iface,
 423                 UINT cidl, LPCITEMIDLIST * apidl, DWORD * rgfInOut)
 424 {
 425     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 426     HRESULT hr = S_OK;
 427     static const DWORD dwDesktopAttributes =
 428         SFGAO_STORAGE | SFGAO_HASPROPSHEET | SFGAO_STORAGEANCESTOR |
 429         SFGAO_FILESYSANCESTOR | SFGAO_FOLDER | SFGAO_FILESYSTEM | SFGAO_HASSUBFOLDER;
 430     static const DWORD dwMyComputerAttributes =
 431         SFGAO_CANRENAME | SFGAO_CANDELETE | SFGAO_HASPROPSHEET |
 432         SFGAO_DROPTARGET | SFGAO_FILESYSANCESTOR | SFGAO_FOLDER | SFGAO_HASSUBFOLDER;
 433
 434     TRACE ("(%p)->(cidl=%d apidl=%p mask=%p (0x%08x))\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 if (_ILIsMyComputer(*apidl)) {
 453                 *rgfInOut &= dwMyComputerAttributes;
 454             } else {
 455                 SHELL32_GetItemAttributes (_IShellFolder_ (This), *apidl, rgfInOut);
 456             }
 457             apidl++;
 458             cidl--;
 459         }
 460     }
 461     /* make sure SFGAO_VALIDATE is cleared, some apps depend on that */
 462     *rgfInOut &= ~SFGAO_VALIDATE;
 463
 464     TRACE ("-- result=0x%08x\n", *rgfInOut);
 465
 466     return hr;
 467 }
 468
 469 /**************************************************************************
 470  *    ISF_Desktop_fnGetUIObjectOf
 471  *
 472  * PARAMETERS
 473  *  HWND           hwndOwner, //[in ] Parent window for any output
 474  *  UINT           cidl,      //[in ] array size
 475  *  LPCITEMIDLIST* apidl,     //[in ] simple pidl array
 476  *  REFIID         riid,      //[in ] Requested Interface
 477  *  UINT*          prgfInOut, //[   ] reserved
 478  *  LPVOID*        ppvObject) //[out] Resulting Interface
 479  *
 480  */
 481 static HRESULT WINAPI ISF_Desktop_fnGetUIObjectOf (IShellFolder2 * iface,
 482                 HWND hwndOwner, UINT cidl, LPCITEMIDLIST * apidl,
 483                 REFIID riid, UINT * prgfInOut, LPVOID * ppvOut)
 484 {
 485     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 486
 487     LPITEMIDLIST pidl;
 488     IUnknown *pObj = NULL;
 489     HRESULT hr = E_INVALIDARG;
 490
 491     TRACE ("(%p)->(%p,%u,apidl=%p,%s,%p,%p)\n",
 492        This, hwndOwner, cidl, apidl, shdebugstr_guid (riid), prgfInOut, ppvOut);
 493
 494     if (!ppvOut)
 495         return hr;
 496
 497     *ppvOut = NULL;
 498
 499     if (IsEqualIID (riid, &IID_IContextMenu))
 500     {
 501         if (cidl > 0)
 502             pObj = (LPUNKNOWN) ISvItemCm_Constructor( (IShellFolder *) iface, This->pidlRoot, apidl, cidl);
 503         else
 504             pObj = (LPUNKNOWN) ISvBgCm_Constructor( (IShellFolder *) iface, TRUE);
 505         hr = S_OK;
 506     }
 507     else if (IsEqualIID (riid, &IID_IDataObject) && (cidl >= 1))
 508     {
 509         pObj = (LPUNKNOWN) IDataObject_Constructor( hwndOwner,
 510                                                   This->pidlRoot, apidl, cidl);
 511         hr = S_OK;
 512     }
 513     else if (IsEqualIID (riid, &IID_IExtractIconA) && (cidl == 1))
 514     {
 515         pidl = ILCombine (This->pidlRoot, apidl[0]);
 516         pObj = (LPUNKNOWN) IExtractIconA_Constructor (pidl);
 517         SHFree (pidl);
 518         hr = S_OK;
 519     }
 520     else if (IsEqualIID (riid, &IID_IExtractIconW) && (cidl == 1))
 521     {
 522         pidl = ILCombine (This->pidlRoot, apidl[0]);
 523         pObj = (LPUNKNOWN) IExtractIconW_Constructor (pidl);
 524         SHFree (pidl);
 525         hr = S_OK;
 526     }
 527     else if (IsEqualIID (riid, &IID_IDropTarget) && (cidl >= 1))
 528     {
 529         hr = IShellFolder_QueryInterface (iface,
 530                                           &IID_IDropTarget, (LPVOID *) & pObj);
 531     }
 532     else if ((IsEqualIID(riid,&IID_IShellLinkW) ||
 533               IsEqualIID(riid,&IID_IShellLinkA)) && (cidl == 1))
 534     {
 535         pidl = ILCombine (This->pidlRoot, apidl[0]);
 536         hr = IShellLink_ConstructFromFile(NULL, riid, pidl, (LPVOID*)&pObj);
 537         SHFree (pidl);
 538     }
 539     else
 540         hr = E_NOINTERFACE;
 541
 542     if (SUCCEEDED(hr) && !pObj)
 543         hr = E_OUTOFMEMORY;
 544
 545     *ppvOut = pObj;
 546     TRACE ("(%p)->hr=0x%08x\n", This, hr);
 547     return hr;
 548 }
 549
 550 /**************************************************************************
 551  *    ISF_Desktop_fnGetDisplayNameOf
 552  *
 553  * NOTES
 554  *    special case: pidl = null gives desktop-name back
 555  */
 556 static HRESULT WINAPI ISF_Desktop_fnGetDisplayNameOf (IShellFolder2 * iface,
 557                 LPCITEMIDLIST pidl, DWORD dwFlags, LPSTRRET strRet)
 558 {
 559     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 560     HRESULT hr = S_OK;
 561     LPWSTR pszPath;
 562
 563     TRACE ("(%p)->(pidl=%p,0x%08x,%p)\n", This, pidl, dwFlags, strRet);
 564     pdump (pidl);
 565
 566     if (!strRet)
 567         return E_INVALIDARG;
 568
 569     pszPath = CoTaskMemAlloc((MAX_PATH +1) * sizeof(WCHAR));
 570     if (!pszPath)
 571         return E_OUTOFMEMORY;
 572
 573     if (_ILIsDesktop (pidl))
 574     {
 575         if ((GET_SHGDN_RELATION (dwFlags) == SHGDN_NORMAL) &&
 576             (GET_SHGDN_FOR (dwFlags) & SHGDN_FORPARSING))
 577             strcpyW(pszPath, This->sPathTarget);
 578         else
 579             HCR_GetClassNameW(&CLSID_ShellDesktop, pszPath, MAX_PATH);
 580     }
 581     else if (_ILIsPidlSimple (pidl))
 582     {
 583         GUID const *clsid;
 584
 585         if ((clsid = _ILGetGUIDPointer (pidl)))
 586         {
 587             if (GET_SHGDN_FOR (dwFlags) & SHGDN_FORPARSING)
 588             {
 589                 int bWantsForParsing;
 590
 591                 /*
 592                  * We can only get a filesystem path from a shellfolder if the
 593                  *  value WantsFORPARSING in CLSID\\{...}\\shellfolder exists.
 594                  *
 595                  * Exception: The MyComputer folder doesn't have this key,
 596                  *   but any other filesystem backed folder it needs it.
 597                  */
 598                 if (IsEqualIID (clsid, &CLSID_MyComputer))
 599                 {
 600                     bWantsForParsing = TRUE;
 601                 }
 602                 else
 603                 {
 604                     /* get the "WantsFORPARSING" flag from the registry */
 605                     static const WCHAR clsidW[] =
 606                      { 'C','L','S','I','D','\\',0 };
 607                     static const WCHAR shellfolderW[] =
 608                      { '\\','s','h','e','l','l','f','o','l','d','e','r',0 };
 609                     static const WCHAR wantsForParsingW[] =
 610                      { 'W','a','n','t','s','F','o','r','P','a','r','s','i','n',
 611                      'g',0 };
 612                     WCHAR szRegPath[100];
 613                     LONG r;
 614
 615                     lstrcpyW (szRegPath, clsidW);
 616                     SHELL32_GUIDToStringW (clsid, &szRegPath[6]);
 617                     lstrcatW (szRegPath, shellfolderW);
 618                     r = SHGetValueW(HKEY_CLASSES_ROOT, szRegPath,
 619                                     wantsForParsingW, NULL, NULL, NULL);
 620                     if (r == ERROR_SUCCESS)
 621                         bWantsForParsing = TRUE;
 622                     else
 623                         bWantsForParsing = FALSE;
 624                 }
 625
 626                 if ((GET_SHGDN_RELATION (dwFlags) == SHGDN_NORMAL) &&
 627                      bWantsForParsing)
 628                 {
 629                     /*
 630                      * we need the filesystem path to the destination folder.
 631                      * Only the folder itself can know it
 632                      */
 633                     hr = SHELL32_GetDisplayNameOfChild (iface, pidl, dwFlags,
 634                                                         pszPath,
 635                                                         MAX_PATH);
 636                 }
 637                 else
 638                 {
 639                     /* parsing name like ::{...} */
 640                     pszPath[0] = ':';
 641                     pszPath[1] = ':';
 642                     SHELL32_GUIDToStringW (clsid, &pszPath[2]);
 643                 }
 644             }
 645             else
 646             {
 647                 /* user friendly name */
 648                 HCR_GetClassNameW (clsid, pszPath, MAX_PATH);
 649             }
 650         }
 651         else
 652         {
 653             int cLen = 0;
 654
 655             /* file system folder or file rooted at the desktop */
 656             if ((GET_SHGDN_FOR(dwFlags) == SHGDN_FORPARSING) &&
 657                 (GET_SHGDN_RELATION(dwFlags) != SHGDN_INFOLDER))
 658             {
 659                 lstrcpynW(pszPath, This->sPathTarget, MAX_PATH - 1);
 660                 PathAddBackslashW(pszPath);
 661                 cLen = lstrlenW(pszPath);
 662             }
 663
 664             _ILSimpleGetTextW(pidl, pszPath + cLen, MAX_PATH - cLen);
 665
 666             if (!_ILIsFolder(pidl))
 667                 SHELL_FS_ProcessDisplayFilename(pszPath, dwFlags);
 668         }
 669     }
 670     else
 671     {
 672         /* a complex pidl, let the subfolder do the work */
 673         hr = SHELL32_GetDisplayNameOfChild (iface, pidl, dwFlags,
 674                                             pszPath, MAX_PATH);
 675     }
 676
 677     if (SUCCEEDED(hr))
 678     {
 679         /* Win9x always returns ANSI strings, NT always returns Unicode strings */
 680         if (GetVersion() & 0x80000000)
 681         {
 682             strRet->uType = STRRET_CSTR;
 683             if (!WideCharToMultiByte(CP_ACP, 0, pszPath, -1, strRet->u.cStr, MAX_PATH,
 684                                      NULL, NULL))
 685                 strRet->u.cStr[0] = '\0';
 686             CoTaskMemFree(pszPath);
 687         }
 688         else
 689         {
 690             strRet->uType = STRRET_WSTR;
 691             strRet->u.pOleStr = pszPath;
 692         }
 693     }
 694     else
 695         CoTaskMemFree(pszPath);
 696
 697     TRACE ("-- (%p)->(%s,0x%08x)\n", This,
 698      strRet->uType == STRRET_CSTR ? strRet->u.cStr :
 699      debugstr_w(strRet->u.pOleStr), hr);
 700     return hr;
 701 }
 702
 703 /**************************************************************************
 704  *  ISF_Desktop_fnSetNameOf
 705  *  Changes the name of a file object or subfolder, possibly changing its item
 706  *  identifier in the process.
 707  *
 708  * PARAMETERS
 709  *  HWND          hwndOwner,  //[in ] Owner window for output
 710  *  LPCITEMIDLIST pidl,       //[in ] simple pidl of item to change
 711  *  LPCOLESTR     lpszName,   //[in ] the items new display name
 712  *  DWORD         dwFlags,    //[in ] SHGNO formatting flags
 713  *  LPITEMIDLIST* ppidlOut)   //[out] simple pidl returned
 714  */
 715 static HRESULT WINAPI ISF_Desktop_fnSetNameOf (IShellFolder2 * iface,
 716                 HWND hwndOwner, LPCITEMIDLIST pidl,    /* simple pidl */
 717                 LPCOLESTR lpName, DWORD dwFlags, LPITEMIDLIST * pPidlOut)
 718 {
 719     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 720
 721     FIXME ("(%p)->(%p,pidl=%p,%s,%u,%p)\n", This, hwndOwner, pidl,
 722            debugstr_w (lpName), dwFlags, pPidlOut);
 723
 724     return E_FAIL;
 725 }
 726
 727 static HRESULT WINAPI ISF_Desktop_fnGetDefaultSearchGUID(IShellFolder2 *iface,
 728                 GUID * pguid)
 729 {
 730     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 731
 732     FIXME ("(%p)\n", This);
 733     return E_NOTIMPL;
 734 }
 735
 736 static HRESULT WINAPI ISF_Desktop_fnEnumSearches (IShellFolder2 *iface,
 737                 IEnumExtraSearch ** ppenum)
 738 {
 739     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 740     FIXME ("(%p)\n", This);
 741     return E_NOTIMPL;
 742 }
 743
 744 static HRESULT WINAPI ISF_Desktop_fnGetDefaultColumn (IShellFolder2 * iface,
 745                 DWORD dwRes, ULONG * pSort, ULONG * pDisplay)
 746 {
 747     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 748
 749     TRACE ("(%p)\n", This);
 750
 751     if (pSort)
 752         *pSort = 0;
 753     if (pDisplay)
 754         *pDisplay = 0;
 755
 756     return S_OK;
 757 }
 758 static HRESULT WINAPI ISF_Desktop_fnGetDefaultColumnState (
 759                 IShellFolder2 * iface, UINT iColumn, DWORD * pcsFlags)
 760 {
 761     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 762
 763     TRACE ("(%p)\n", This);
 764
 765     if (!pcsFlags || iColumn >= DESKTOPSHELLVIEWCOLUMNS)
 766     return E_INVALIDARG;
 767
 768     *pcsFlags = DesktopSFHeader[iColumn].pcsFlags;
 769
 770     return S_OK;
 771 }
 772
 773 static HRESULT WINAPI ISF_Desktop_fnGetDetailsEx (IShellFolder2 * iface,
 774                 LPCITEMIDLIST pidl, const SHCOLUMNID * pscid, VARIANT * pv)
 775 {
 776     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 777     FIXME ("(%p)\n", This);
 778
 779     return E_NOTIMPL;
 780 }
 781
 782 static HRESULT WINAPI ISF_Desktop_fnGetDetailsOf (IShellFolder2 * iface,
 783                 LPCITEMIDLIST pidl, UINT iColumn, SHELLDETAILS * psd)
 784 {
 785     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 786
 787     HRESULT hr = S_OK;
 788
 789     TRACE ("(%p)->(%p %i %p)\n", This, pidl, iColumn, psd);
 790
 791     if (!psd || iColumn >= DESKTOPSHELLVIEWCOLUMNS)
 792         return E_INVALIDARG;
 793
 794     if (!pidl)
 795     {
 796         psd->fmt = DesktopSFHeader[iColumn].fmt;
 797         psd->cxChar = DesktopSFHeader[iColumn].cxChar;
 798         psd->str.uType = STRRET_CSTR;
 799         LoadStringA (shell32_hInstance, DesktopSFHeader[iColumn].colnameid,
 800                      psd->str.u.cStr, MAX_PATH);
 801         return S_OK;
 802     }
 803
 804     /* the data from the pidl */
 805     psd->str.uType = STRRET_CSTR;
 806     switch (iColumn)
 807     {
 808     case 0:        /* name */
 809         hr = IShellFolder_GetDisplayNameOf(iface, pidl,
 810                    SHGDN_NORMAL | SHGDN_INFOLDER, &psd->str);
 811         break;
 812     case 1:        /* size */
 813         _ILGetFileSize (pidl, psd->str.u.cStr, MAX_PATH);
 814         break;
 815     case 2:        /* type */
 816         _ILGetFileType (pidl, psd->str.u.cStr, MAX_PATH);
 817         break;
 818     case 3:        /* date */
 819         _ILGetFileDate (pidl, psd->str.u.cStr, MAX_PATH);
 820         break;
 821     case 4:        /* attributes */
 822         _ILGetFileAttributes (pidl, psd->str.u.cStr, MAX_PATH);
 823         break;
 824     }
 825
 826     return hr;
 827 }
 828
 829 static HRESULT WINAPI ISF_Desktop_fnMapColumnToSCID (
 830                 IShellFolder2 * iface, UINT column, SHCOLUMNID * pscid)
 831 {
 832     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 833     FIXME ("(%p)\n", This);
 834     return E_NOTIMPL;
 835 }
 836
 837 static const IShellFolder2Vtbl vt_MCFldr_ShellFolder2 =
 838 {
 839     ISF_Desktop_fnQueryInterface,
 840     ISF_Desktop_fnAddRef,
 841     ISF_Desktop_fnRelease,
 842     ISF_Desktop_fnParseDisplayName,
 843     ISF_Desktop_fnEnumObjects,
 844     ISF_Desktop_fnBindToObject,
 845     ISF_Desktop_fnBindToStorage,
 846     ISF_Desktop_fnCompareIDs,
 847     ISF_Desktop_fnCreateViewObject,
 848     ISF_Desktop_fnGetAttributesOf,
 849     ISF_Desktop_fnGetUIObjectOf,
 850     ISF_Desktop_fnGetDisplayNameOf,
 851     ISF_Desktop_fnSetNameOf,
 852     /* ShellFolder2 */
 853     ISF_Desktop_fnGetDefaultSearchGUID,
 854     ISF_Desktop_fnEnumSearches,
 855     ISF_Desktop_fnGetDefaultColumn,
 856     ISF_Desktop_fnGetDefaultColumnState,
 857     ISF_Desktop_fnGetDetailsEx,
 858     ISF_Desktop_fnGetDetailsOf,
 859     ISF_Desktop_fnMapColumnToSCID
 860 };
 861
 862 /**************************************************************************
 863  *    ISF_Desktop_Constructor
 864  */
 865 HRESULT WINAPI ISF_Desktop_Constructor (
 866                 IUnknown * pUnkOuter, REFIID riid, LPVOID * ppv)
 867 {
 868     IGenericSFImpl *sf;
 869     WCHAR szMyPath[MAX_PATH];
 870     HRESULT r;
 871
 872     TRACE ("unkOut=%p %s\n", pUnkOuter, shdebugstr_guid (riid));
 873
 874     if (!ppv)
 875         return E_POINTER;
 876     if (pUnkOuter)
 877         return CLASS_E_NOAGGREGATION;
 878
 879     if (!SHGetSpecialFolderPathW( 0, szMyPath, CSIDL_DESKTOPDIRECTORY, TRUE ))
 880         return E_UNEXPECTED;
 881
 882     sf = LocalAlloc( LMEM_ZEROINIT, sizeof (IGenericSFImpl) );
 883     if (!sf)
 884         return E_OUTOFMEMORY;
 885
 886     sf->ref = 0;
 887     sf->lpVtbl = &vt_MCFldr_ShellFolder2;
 888     sf->pidlRoot = _ILCreateDesktop();    /* my qualified pidl */
 889     sf->sPathTarget = SHAlloc( (lstrlenW(szMyPath) + 1)*sizeof(WCHAR) );
 890     lstrcpyW( sf->sPathTarget, szMyPath );
 891
 892     r = IUnknown_QueryInterface( _IUnknown_(sf), riid, ppv );
 893     if (!SUCCEEDED (r))
 894     {
 895         IUnknown_Release( _IUnknown_(sf) );
 896         return r;
 897     }
 898
 899     TRACE ("--(%p)\n", sf);
 900     return S_OK;
 901 }