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         UINT i;
 278
 279         /* create the pidl for This item */
 280         ret = AddToEnumList(list, _ILCreateMyComputer());
 281
 282         for (i=0; i<2; i++) {
 283             if (ret && !RegOpenKeyExW(i == 0 ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER,
 284                                       Desktop_NameSpaceW, 0, KEY_READ, &hkey))
 285             {
 286                 WCHAR iid[50];
 287                 int i=0;
 288
 289                 while (ret)
 290                 {
 291                     DWORD size;
 292                     LONG r;
 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                         break;
 303                     else
 304                         ret = FALSE;
 305                 }
 306                 RegCloseKey(hkey);
 307             }
 308         }
 309     }
 310
 311     /* enumerate the elements in %windir%\desktop */
 312     SHGetSpecialFolderPathW(0, szPath, CSIDL_DESKTOPDIRECTORY, FALSE);
 313     ret = ret && CreateFolderEnumList(list, szPath, dwFlags);
 314
 315     return ret;
 316 }
 317
 318 /**************************************************************************
 319  *        ISF_Desktop_fnEnumObjects
 320  */
 321 static HRESULT WINAPI ISF_Desktop_fnEnumObjects (IShellFolder2 * iface,
 322                 HWND hwndOwner, DWORD dwFlags, LPENUMIDLIST * ppEnumIDList)
 323 {
 324     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 325
 326     TRACE ("(%p)->(HWND=%p flags=0x%08lx pplist=%p)\n",
 327            This, hwndOwner, dwFlags, ppEnumIDList);
 328
 329     *ppEnumIDList = IEnumIDList_Constructor();
 330     if (*ppEnumIDList)
 331         CreateDesktopEnumList(*ppEnumIDList, dwFlags);
 332
 333     TRACE ("-- (%p)->(new ID List: %p)\n", This, *ppEnumIDList);
 334
 335     return *ppEnumIDList ? S_OK : E_OUTOFMEMORY;
 336 }
 337
 338 /**************************************************************************
 339  *        ISF_Desktop_fnBindToObject
 340  */
 341 static HRESULT WINAPI ISF_Desktop_fnBindToObject (IShellFolder2 * iface,
 342                 LPCITEMIDLIST pidl, LPBC pbcReserved, REFIID riid, LPVOID * ppvOut)
 343 {
 344     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 345
 346     TRACE ("(%p)->(pidl=%p,%p,%s,%p)\n",
 347            This, pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 348
 349     return SHELL32_BindToChild( This->pidlRoot, This->sPathTarget, pidl, riid, ppvOut );
 350 }
 351
 352 /**************************************************************************
 353  *    ISF_Desktop_fnBindToStorage
 354  */
 355 static HRESULT WINAPI ISF_Desktop_fnBindToStorage (IShellFolder2 * iface,
 356                 LPCITEMIDLIST pidl, LPBC pbcReserved, REFIID riid, LPVOID * ppvOut)
 357 {
 358     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 359
 360     FIXME ("(%p)->(pidl=%p,%p,%s,%p) stub\n",
 361            This, pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 362
 363     *ppvOut = NULL;
 364     return E_NOTIMPL;
 365 }
 366
 367 /**************************************************************************
 368  *     ISF_Desktop_fnCompareIDs
 369  */
 370 static HRESULT WINAPI ISF_Desktop_fnCompareIDs (IShellFolder2 * iface,
 371                         LPARAM lParam, LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 372 {
 373     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 374     int nReturn;
 375
 376     TRACE ("(%p)->(0x%08lx,pidl1=%p,pidl2=%p)\n", This, lParam, pidl1, pidl2);
 377     nReturn = SHELL32_CompareIDs (_IShellFolder_ (This), lParam, pidl1, pidl2);
 378     TRACE ("-- %i\n", nReturn);
 379     return nReturn;
 380 }
 381
 382 /**************************************************************************
 383  *    ISF_Desktop_fnCreateViewObject
 384  */
 385 static HRESULT WINAPI ISF_Desktop_fnCreateViewObject (IShellFolder2 * iface,
 386                               HWND hwndOwner, REFIID riid, LPVOID * ppvOut)
 387 {
 388     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 389     LPSHELLVIEW pShellView;
 390     HRESULT hr = E_INVALIDARG;
 391
 392     TRACE ("(%p)->(hwnd=%p,%s,%p)\n",
 393            This, hwndOwner, shdebugstr_guid (riid), ppvOut);
 394
 395     if (!ppvOut)
 396         return hr;
 397
 398     *ppvOut = NULL;
 399
 400     if (IsEqualIID (riid, &IID_IDropTarget))
 401     {
 402         WARN ("IDropTarget not implemented\n");
 403         hr = E_NOTIMPL;
 404     }
 405     else if (IsEqualIID (riid, &IID_IContextMenu))
 406     {
 407         WARN ("IContextMenu not implemented\n");
 408         hr = E_NOTIMPL;
 409     }
 410     else if (IsEqualIID (riid, &IID_IShellView))
 411     {
 412         pShellView = IShellView_Constructor ((IShellFolder *) iface);
 413         if (pShellView)
 414         {
 415             hr = IShellView_QueryInterface (pShellView, riid, ppvOut);
 416             IShellView_Release (pShellView);
 417         }
 418     }
 419     TRACE ("-- (%p)->(interface=%p)\n", This, ppvOut);
 420     return hr;
 421 }
 422
 423 /**************************************************************************
 424  *  ISF_Desktop_fnGetAttributesOf
 425  */
 426 static HRESULT WINAPI ISF_Desktop_fnGetAttributesOf (IShellFolder2 * iface,
 427                 UINT cidl, LPCITEMIDLIST * apidl, DWORD * rgfInOut)
 428 {
 429     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 430     HRESULT hr = S_OK;
 431     static const DWORD dwDesktopAttributes =
 432         SFGAO_STORAGE | SFGAO_HASPROPSHEET | SFGAO_STORAGEANCESTOR |
 433         SFGAO_FILESYSANCESTOR | SFGAO_FOLDER | SFGAO_FILESYSTEM | SFGAO_HASSUBFOLDER;
 434     static const DWORD dwMyComputerAttributes =
 435         SFGAO_CANRENAME | SFGAO_CANDELETE | SFGAO_HASPROPSHEET |
 436         SFGAO_DROPTARGET | SFGAO_FILESYSANCESTOR | SFGAO_FOLDER | SFGAO_HASSUBFOLDER;
 437
 438     TRACE ("(%p)->(cidl=%d apidl=%p mask=%p (0x%08lx))\n",
 439            This, cidl, apidl, rgfInOut, rgfInOut ? *rgfInOut : 0);
 440
 441     if (!rgfInOut)
 442         return E_INVALIDARG;
 443     if (cidl && !apidl)
 444         return E_INVALIDARG;
 445
 446     if (*rgfInOut == 0)
 447         *rgfInOut = ~0;
 448
 449     if(cidl == 0) {
 450         *rgfInOut &= dwDesktopAttributes;
 451     } else {
 452         while (cidl > 0 && *apidl) {
 453             pdump (*apidl);
 454             if (_ILIsDesktop(*apidl)) {
 455                 *rgfInOut &= dwDesktopAttributes;
 456             } else if (_ILIsMyComputer(*apidl)) {
 457                 *rgfInOut &= dwMyComputerAttributes;
 458             } else {
 459                 SHELL32_GetItemAttributes (_IShellFolder_ (This), *apidl, rgfInOut);
 460             }
 461             apidl++;
 462             cidl--;
 463         }
 464     }
 465     /* make sure SFGAO_VALIDATE is cleared, some apps depend on that */
 466     *rgfInOut &= ~SFGAO_VALIDATE;
 467
 468     TRACE ("-- result=0x%08lx\n", *rgfInOut);
 469
 470     return hr;
 471 }
 472
 473 /**************************************************************************
 474  *    ISF_Desktop_fnGetUIObjectOf
 475  *
 476  * PARAMETERS
 477  *  HWND           hwndOwner, //[in ] Parent window for any output
 478  *  UINT           cidl,      //[in ] array size
 479  *  LPCITEMIDLIST* apidl,     //[in ] simple pidl array
 480  *  REFIID         riid,      //[in ] Requested Interface
 481  *  UINT*          prgfInOut, //[   ] reserved
 482  *  LPVOID*        ppvObject) //[out] Resulting Interface
 483  *
 484  */
 485 static HRESULT WINAPI ISF_Desktop_fnGetUIObjectOf (IShellFolder2 * iface,
 486                 HWND hwndOwner, UINT cidl, LPCITEMIDLIST * apidl,
 487                 REFIID riid, UINT * prgfInOut, LPVOID * ppvOut)
 488 {
 489     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 490
 491     LPITEMIDLIST pidl;
 492     IUnknown *pObj = NULL;
 493     HRESULT hr = E_INVALIDARG;
 494
 495     TRACE ("(%p)->(%p,%u,apidl=%p,%s,%p,%p)\n",
 496        This, hwndOwner, cidl, apidl, shdebugstr_guid (riid), prgfInOut, ppvOut);
 497
 498     if (!ppvOut)
 499         return hr;
 500
 501     *ppvOut = NULL;
 502
 503     if (IsEqualIID (riid, &IID_IContextMenu))
 504     {
 505         if (cidl > 0)
 506             pObj = (LPUNKNOWN) ISvItemCm_Constructor( (IShellFolder *) iface, This->pidlRoot, apidl, cidl);
 507         else
 508             pObj = (LPUNKNOWN) ISvBgCm_Constructor( (IShellFolder *) iface, TRUE);
 509         hr = S_OK;
 510     }
 511     else if (IsEqualIID (riid, &IID_IDataObject) && (cidl >= 1))
 512     {
 513         pObj = (LPUNKNOWN) IDataObject_Constructor( hwndOwner,
 514                                                   This->pidlRoot, apidl, cidl);
 515         hr = S_OK;
 516     }
 517     else if (IsEqualIID (riid, &IID_IExtractIconA) && (cidl == 1))
 518     {
 519         pidl = ILCombine (This->pidlRoot, apidl[0]);
 520         pObj = (LPUNKNOWN) IExtractIconA_Constructor (pidl);
 521         SHFree (pidl);
 522         hr = S_OK;
 523     }
 524     else if (IsEqualIID (riid, &IID_IExtractIconW) && (cidl == 1))
 525     {
 526         pidl = ILCombine (This->pidlRoot, apidl[0]);
 527         pObj = (LPUNKNOWN) IExtractIconW_Constructor (pidl);
 528         SHFree (pidl);
 529         hr = S_OK;
 530     }
 531     else if (IsEqualIID (riid, &IID_IDropTarget) && (cidl >= 1))
 532     {
 533         hr = IShellFolder_QueryInterface (iface,
 534                                           &IID_IDropTarget, (LPVOID *) & pObj);
 535     }
 536     else if ((IsEqualIID(riid,&IID_IShellLinkW) ||
 537               IsEqualIID(riid,&IID_IShellLinkA)) && (cidl == 1))
 538     {
 539         pidl = ILCombine (This->pidlRoot, apidl[0]);
 540         hr = IShellLink_ConstructFromFile(NULL, riid, pidl, (LPVOID*)&pObj);
 541         SHFree (pidl);
 542     }
 543     else
 544         hr = E_NOINTERFACE;
 545
 546     if (SUCCEEDED(hr) && !pObj)
 547         hr = E_OUTOFMEMORY;
 548
 549     *ppvOut = pObj;
 550     TRACE ("(%p)->hr=0x%08lx\n", This, hr);
 551     return hr;
 552 }
 553
 554 /**************************************************************************
 555  *    ISF_Desktop_fnGetDisplayNameOf
 556  *
 557  * NOTES
 558  *    special case: pidl = null gives desktop-name back
 559  */
 560 static HRESULT WINAPI ISF_Desktop_fnGetDisplayNameOf (IShellFolder2 * iface,
 561                 LPCITEMIDLIST pidl, DWORD dwFlags, LPSTRRET strRet)
 562 {
 563     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 564     HRESULT hr = S_OK;
 565     WCHAR wszPath[MAX_PATH];
 566
 567     TRACE ("(%p)->(pidl=%p,0x%08lx,%p)\n", This, pidl, dwFlags, strRet);
 568     pdump (pidl);
 569
 570     if (!strRet)
 571         return E_INVALIDARG;
 572
 573     strRet->uType = STRRET_CSTR;
 574     if (_ILIsDesktop (pidl))
 575     {
 576         if ((GET_SHGDN_RELATION (dwFlags) == SHGDN_NORMAL) &&
 577             (GET_SHGDN_FOR (dwFlags) & SHGDN_FORPARSING))
 578         {
 579             BOOL defCharUsed;
 580
 581             WideCharToMultiByte( CP_ACP, 0, This->sPathTarget, -1,
 582                                  strRet->u.cStr, MAX_PATH, NULL, &defCharUsed );
 583             if (defCharUsed)
 584             {
 585                 strRet->u.pOleStr = SHAlloc((lstrlenW(This->sPathTarget)+1) *
 586                  sizeof(WCHAR));
 587                 if (!strRet->u.pOleStr)
 588                     hr = E_OUTOFMEMORY;
 589                 else
 590                 {
 591                     strcpyW(strRet->u.pOleStr, This->sPathTarget);
 592                     strRet->uType = STRRET_WSTR;
 593                 }
 594             }
 595         }
 596         else
 597         {
 598             HCR_GetClassNameA(&CLSID_ShellDesktop, strRet->u.cStr, MAX_PATH);
 599         }
 600     }
 601     else if (_ILIsPidlSimple (pidl))
 602     {
 603         GUID const *clsid;
 604
 605         if ((clsid = _ILGetGUIDPointer (pidl)))
 606         {
 607             if (GET_SHGDN_FOR (dwFlags) & SHGDN_FORPARSING)
 608             {
 609                 int bWantsForParsing;
 610
 611                 /*
 612                  * We can only get a filesystem path from a shellfolder if the
 613                  *  value WantsFORPARSING in CLSID\\{...}\\shellfolder exists.
 614                  *
 615                  * Exception: The MyComputer folder doesn't have this key,
 616                  *   but any other filesystem backed folder it needs it.
 617                  */
 618                 if (IsEqualIID (clsid, &CLSID_MyComputer))
 619                 {
 620                     bWantsForParsing = TRUE;
 621                 }
 622                 else
 623                 {
 624                     /* get the "WantsFORPARSING" flag from the registry */
 625                     static const WCHAR clsidW[] =
 626                      { 'C','L','S','I','D','\\',0 };
 627                     static const WCHAR shellfolderW[] =
 628                      { '\\','s','h','e','l','l','f','o','l','d','e','r',0 };
 629                     static const WCHAR wantsForParsingW[] =
 630                      { 'W','a','n','t','s','F','o','r','P','a','r','s','i','n',
 631                      'g',0 };
 632                     WCHAR szRegPath[100];
 633                     LONG r;
 634
 635                     lstrcpyW (szRegPath, clsidW);
 636                     SHELL32_GUIDToStringW (clsid, &szRegPath[6]);
 637                     lstrcatW (szRegPath, shellfolderW);
 638                     r = SHGetValueW(HKEY_CLASSES_ROOT, szRegPath,
 639                                     wantsForParsingW, NULL, NULL, NULL);
 640                     if (r == ERROR_SUCCESS)
 641                         bWantsForParsing = TRUE;
 642                     else
 643                         bWantsForParsing = FALSE;
 644                 }
 645
 646                 if ((GET_SHGDN_RELATION (dwFlags) == SHGDN_NORMAL) &&
 647                      bWantsForParsing)
 648                 {
 649                     WCHAR wszPath[MAX_PATH];
 650                     /*
 651                      * we need the filesystem path to the destination folder.
 652                      * Only the folder itself can know it
 653                      */
 654                     hr = SHELL32_GetDisplayNameOfChild (iface, pidl, dwFlags,
 655                                                         wszPath,
 656                                                         MAX_PATH);
 657                     if (SUCCEEDED(hr))
 658                     {
 659                         if (!WideCharToMultiByte(CP_ACP, 0, wszPath, -1, strRet->u.cStr, MAX_PATH,
 660                                                  NULL, NULL))
 661                             wszPath[0] = '\0';
 662                     }
 663                 }
 664                 else
 665                 {
 666                     /* parsing name like ::{...} */
 667                     lstrcpyA (strRet->u.cStr, "::");
 668                     SHELL32_GUIDToStringA (clsid, &strRet->u.cStr[2]);
 669                 }
 670             }
 671             else
 672             {
 673                 /* user friendly name */
 674                 HCR_GetClassNameA (clsid, strRet->u.cStr, MAX_PATH);
 675             }
 676         }
 677         else
 678         {
 679             int cLen = 0;
 680
 681             /* file system folder or file rooted at the desktop */
 682             if ((GET_SHGDN_FOR(dwFlags) == SHGDN_FORPARSING) &&
 683                 (GET_SHGDN_RELATION(dwFlags) != SHGDN_INFOLDER))
 684             {
 685                 lstrcpynW(wszPath, This->sPathTarget, MAX_PATH - 1);
 686                 PathAddBackslashW(wszPath);
 687                 cLen = lstrlenW(wszPath);
 688             }
 689
 690             _ILSimpleGetTextW(pidl, wszPath + cLen, MAX_PATH - cLen);
 691
 692             if (!_ILIsFolder(pidl))
 693                 SHELL_FS_ProcessDisplayFilename(wszPath, dwFlags);
 694
 695             WideCharToMultiByte(CP_ACP, 0, wszPath, -1, strRet->u.cStr, MAX_PATH,
 696                                 NULL, NULL);
 697         }
 698     }
 699     else
 700     {
 701         /* a complex pidl, let the subfolder do the work */
 702         hr = SHELL32_GetDisplayNameOfChild (iface, pidl, dwFlags,
 703                                             wszPath, MAX_PATH);
 704         if (SUCCEEDED(hr))
 705         {
 706             if (!WideCharToMultiByte(CP_ACP, 0, wszPath, -1, strRet->u.cStr, MAX_PATH,
 707                                      NULL, NULL))
 708                 wszPath[0] = '\0';
 709         }
 710     }
 711
 712     TRACE ("-- (%p)->(%s,0x%08lx)\n", This,
 713      strRet->uType == STRRET_CSTR ? strRet->u.cStr :
 714      debugstr_w(strRet->u.pOleStr), hr);
 715     return hr;
 716 }
 717
 718 /**************************************************************************
 719  *  ISF_Desktop_fnSetNameOf
 720  *  Changes the name of a file object or subfolder, possibly changing its item
 721  *  identifier in the process.
 722  *
 723  * PARAMETERS
 724  *  HWND          hwndOwner,  //[in ] Owner window for output
 725  *  LPCITEMIDLIST pidl,       //[in ] simple pidl of item to change
 726  *  LPCOLESTR     lpszName,   //[in ] the items new display name
 727  *  DWORD         dwFlags,    //[in ] SHGNO formatting flags
 728  *  LPITEMIDLIST* ppidlOut)   //[out] simple pidl returned
 729  */
 730 static HRESULT WINAPI ISF_Desktop_fnSetNameOf (IShellFolder2 * iface,
 731                 HWND hwndOwner, LPCITEMIDLIST pidl,    /* simple pidl */
 732                 LPCOLESTR lpName, DWORD dwFlags, LPITEMIDLIST * pPidlOut)
 733 {
 734     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 735
 736     FIXME ("(%p)->(%p,pidl=%p,%s,%lu,%p)\n", This, hwndOwner, pidl,
 737            debugstr_w (lpName), dwFlags, pPidlOut);
 738
 739     return E_FAIL;
 740 }
 741
 742 static HRESULT WINAPI ISF_Desktop_fnGetDefaultSearchGUID(IShellFolder2 *iface,
 743                 GUID * pguid)
 744 {
 745     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 746
 747     FIXME ("(%p)\n", This);
 748     return E_NOTIMPL;
 749 }
 750
 751 static HRESULT WINAPI ISF_Desktop_fnEnumSearches (IShellFolder2 *iface,
 752                 IEnumExtraSearch ** ppenum)
 753 {
 754     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 755     FIXME ("(%p)\n", This);
 756     return E_NOTIMPL;
 757 }
 758
 759 static HRESULT WINAPI ISF_Desktop_fnGetDefaultColumn (IShellFolder2 * iface,
 760                 DWORD dwRes, ULONG * pSort, ULONG * pDisplay)
 761 {
 762     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 763
 764     TRACE ("(%p)\n", This);
 765
 766     if (pSort)
 767         *pSort = 0;
 768     if (pDisplay)
 769         *pDisplay = 0;
 770
 771     return S_OK;
 772 }
 773 static HRESULT WINAPI ISF_Desktop_fnGetDefaultColumnState (
 774                 IShellFolder2 * iface, UINT iColumn, DWORD * pcsFlags)
 775 {
 776     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 777
 778     TRACE ("(%p)\n", This);
 779
 780     if (!pcsFlags || iColumn >= DESKTOPSHELLVIEWCOLUMNS)
 781     return E_INVALIDARG;
 782
 783     *pcsFlags = DesktopSFHeader[iColumn].pcsFlags;
 784
 785     return S_OK;
 786 }
 787
 788 static HRESULT WINAPI ISF_Desktop_fnGetDetailsEx (IShellFolder2 * iface,
 789                 LPCITEMIDLIST pidl, const SHCOLUMNID * pscid, VARIANT * pv)
 790 {
 791     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 792     FIXME ("(%p)\n", This);
 793
 794     return E_NOTIMPL;
 795 }
 796
 797 static HRESULT WINAPI ISF_Desktop_fnGetDetailsOf (IShellFolder2 * iface,
 798                 LPCITEMIDLIST pidl, UINT iColumn, SHELLDETAILS * psd)
 799 {
 800     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 801
 802     HRESULT hr = S_OK;
 803
 804     TRACE ("(%p)->(%p %i %p)\n", This, pidl, iColumn, psd);
 805
 806     if (!psd || iColumn >= DESKTOPSHELLVIEWCOLUMNS)
 807         return E_INVALIDARG;
 808
 809     if (!pidl)
 810     {
 811         psd->fmt = DesktopSFHeader[iColumn].fmt;
 812         psd->cxChar = DesktopSFHeader[iColumn].cxChar;
 813         psd->str.uType = STRRET_CSTR;
 814         LoadStringA (shell32_hInstance, DesktopSFHeader[iColumn].colnameid,
 815                      psd->str.u.cStr, MAX_PATH);
 816         return S_OK;
 817     }
 818
 819     /* the data from the pidl */
 820     psd->str.uType = STRRET_CSTR;
 821     switch (iColumn)
 822     {
 823     case 0:        /* name */
 824         hr = IShellFolder_GetDisplayNameOf(iface, pidl,
 825                    SHGDN_NORMAL | SHGDN_INFOLDER, &psd->str);
 826         break;
 827     case 1:        /* size */
 828         _ILGetFileSize (pidl, psd->str.u.cStr, MAX_PATH);
 829         break;
 830     case 2:        /* type */
 831         _ILGetFileType (pidl, psd->str.u.cStr, MAX_PATH);
 832         break;
 833     case 3:        /* date */
 834         _ILGetFileDate (pidl, psd->str.u.cStr, MAX_PATH);
 835         break;
 836     case 4:        /* attributes */
 837         _ILGetFileAttributes (pidl, psd->str.u.cStr, MAX_PATH);
 838         break;
 839     }
 840
 841     return hr;
 842 }
 843
 844 static HRESULT WINAPI ISF_Desktop_fnMapColumnToSCID (
 845                 IShellFolder2 * iface, UINT column, SHCOLUMNID * pscid)
 846 {
 847     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 848     FIXME ("(%p)\n", This);
 849     return E_NOTIMPL;
 850 }
 851
 852 static const IShellFolder2Vtbl vt_MCFldr_ShellFolder2 =
 853 {
 854     ISF_Desktop_fnQueryInterface,
 855     ISF_Desktop_fnAddRef,
 856     ISF_Desktop_fnRelease,
 857     ISF_Desktop_fnParseDisplayName,
 858     ISF_Desktop_fnEnumObjects,
 859     ISF_Desktop_fnBindToObject,
 860     ISF_Desktop_fnBindToStorage,
 861     ISF_Desktop_fnCompareIDs,
 862     ISF_Desktop_fnCreateViewObject,
 863     ISF_Desktop_fnGetAttributesOf,
 864     ISF_Desktop_fnGetUIObjectOf,
 865     ISF_Desktop_fnGetDisplayNameOf,
 866     ISF_Desktop_fnSetNameOf,
 867     /* ShellFolder2 */
 868     ISF_Desktop_fnGetDefaultSearchGUID,
 869     ISF_Desktop_fnEnumSearches,
 870     ISF_Desktop_fnGetDefaultColumn,
 871     ISF_Desktop_fnGetDefaultColumnState,
 872     ISF_Desktop_fnGetDetailsEx,
 873     ISF_Desktop_fnGetDetailsOf,
 874     ISF_Desktop_fnMapColumnToSCID
 875 };
 876
 877 /**************************************************************************
 878  *    ISF_Desktop_Constructor
 879  */
 880 HRESULT WINAPI ISF_Desktop_Constructor (
 881                 IUnknown * pUnkOuter, REFIID riid, LPVOID * ppv)
 882 {
 883     IGenericSFImpl *sf;
 884     WCHAR szMyPath[MAX_PATH];
 885     HRESULT r;
 886
 887     TRACE ("unkOut=%p %s\n", pUnkOuter, shdebugstr_guid (riid));
 888
 889     if (!ppv)
 890         return E_POINTER;
 891     if (pUnkOuter)
 892         return CLASS_E_NOAGGREGATION;
 893
 894     if (!SHGetSpecialFolderPathW( 0, szMyPath, CSIDL_DESKTOPDIRECTORY, TRUE ))
 895         return E_UNEXPECTED;
 896
 897     sf = LocalAlloc( LMEM_ZEROINIT, sizeof (IGenericSFImpl) );
 898     if (!sf)
 899         return E_OUTOFMEMORY;
 900
 901     sf->ref = 0;
 902     sf->lpVtbl = &vt_MCFldr_ShellFolder2;
 903     sf->pidlRoot = _ILCreateDesktop();    /* my qualified pidl */
 904     sf->sPathTarget = SHAlloc( (lstrlenW(szMyPath) + 1)*sizeof(WCHAR) );
 905     lstrcpyW( sf->sPathTarget, szMyPath );
 906
 907     r = IUnknown_QueryInterface( _IUnknown_(sf), riid, ppv );
 908     if (!SUCCEEDED (r))
 909     {
 910         IUnknown_Release( _IUnknown_(sf) );
 911         return r;
 912     }
 913
 914     TRACE ("--(%p)\n", sf);
 915     return S_OK;
 916 }