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