dlls/shell32/shfldr_mycomp.c

   1 /*
   2  *    Virtual Workplace folder
   3  *
   4  *    Copyright 1997            Marcus Meissner
   5  *    Copyright 1998, 1999, 2002    Juergen Schmied
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <stdarg.h>
  28 #include <stdio.h>
  29
  30 #define COBJMACROS
  31 #define NONAMELESSUNION
  32 #define NONAMELESSSTRUCT
  33
  34 #include "winerror.h"
  35 #include "windef.h"
  36 #include "winbase.h"
  37 #include "winreg.h"
  38
  39 #include "wingdi.h"
  40 #include "pidl.h"
  41 #include "shlguid.h"
  42 #include "enumidlist.h"
  43 #include "undocshell.h"
  44 #include "shell32_main.h"
  45 #include "shresdef.h"
  46 #include "shlwapi.h"
  47 #include "wine/debug.h"
  48 #include "debughlp.h"
  49 #include "shfldr.h"
  50
  51 WINE_DEFAULT_DEBUG_CHANNEL (shell);
  52
  53 /***********************************************************************
  54 *   IShellFolder implementation
  55 */
  56
  57 typedef struct {
  58     const IShellFolder2Vtbl   *lpVtbl;
  59     LONG                ref;
  60     const IPersistFolder2Vtbl *lpVtblPersistFolder2;
  61
  62     /* both paths are parsible from the desktop */
  63     LPITEMIDLIST pidlRoot;    /* absolute pidl */
  64 } IGenericSFImpl;
  65
  66 static const IShellFolder2Vtbl vt_ShellFolder2;
  67 static const IPersistFolder2Vtbl vt_PersistFolder2;
  68
  69 #define _IPersistFolder2_Offset ((int)(&(((IGenericSFImpl*)0)->lpVtblPersistFolder2)))
  70 #define _ICOM_THIS_From_IPersistFolder2(class, name) class* This = (class*)(((char*)name)-_IPersistFolder2_Offset);
  71
  72 /*
  73   converts This to an interface pointer
  74 */
  75 #define _IUnknown_(This)    (IUnknown*)&(This->lpVtbl)
  76 #define _IShellFolder_(This)    (IShellFolder*)&(This->lpVtbl)
  77 #define _IShellFolder2_(This)    (IShellFolder2*)&(This->lpVtbl)
  78
  79 #define _IPersist_(This)    (IPersist*)&(This->lpVtblPersistFolder2)
  80 #define _IPersistFolder_(This)    (IPersistFolder*)&(This->lpVtblPersistFolder2)
  81 #define _IPersistFolder2_(This)    (IPersistFolder2*)&(This->lpVtblPersistFolder2)
  82
  83 /***********************************************************************
  84 *   IShellFolder [MyComputer] implementation
  85 */
  86
  87 static const shvheader MyComputerSFHeader[] = {
  88     {IDS_SHV_COLUMN1, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 15},
  89     {IDS_SHV_COLUMN3, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 10},
  90     {IDS_SHV_COLUMN6, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 10},
  91     {IDS_SHV_COLUMN7, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 10},
  92 };
  93
  94 #define MYCOMPUTERSHELLVIEWCOLUMNS 4
  95
  96 /**************************************************************************
  97 *    ISF_MyComputer_Constructor
  98 */
  99 HRESULT WINAPI ISF_MyComputer_Constructor (IUnknown * pUnkOuter, REFIID riid, LPVOID * ppv)
 100 {
 101     IGenericSFImpl *sf;
 102
 103     TRACE ("unkOut=%p %s\n", pUnkOuter, shdebugstr_guid (riid));
 104
 105     if (!ppv)
 106         return E_POINTER;
 107     if (pUnkOuter)
 108         return CLASS_E_NOAGGREGATION;
 109
 110     sf = LocalAlloc (LMEM_ZEROINIT, sizeof (IGenericSFImpl));
 111     if (!sf)
 112         return E_OUTOFMEMORY;
 113
 114     sf->ref = 0;
 115     sf->lpVtbl = &vt_ShellFolder2;
 116     sf->lpVtblPersistFolder2 = &vt_PersistFolder2;
 117     sf->pidlRoot = _ILCreateMyComputer ();    /* my qualified pidl */
 118
 119     if (!SUCCEEDED (IUnknown_QueryInterface (_IUnknown_ (sf), riid, ppv)))
 120     {
 121         IUnknown_Release (_IUnknown_ (sf));
 122         return E_NOINTERFACE;
 123     }
 124
 125     TRACE ("--(%p)\n", sf);
 126     return S_OK;
 127 }
 128
 129 /**************************************************************************
 130  *    ISF_MyComputer_fnQueryInterface
 131  *
 132  * NOTES supports not IPersist/IPersistFolder
 133  */
 134 static HRESULT WINAPI ISF_MyComputer_fnQueryInterface (IShellFolder2 *iface,
 135                REFIID riid, LPVOID *ppvObj)
 136 {
 137     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 138
 139     TRACE ("(%p)->(%s,%p)\n", This, shdebugstr_guid (riid), ppvObj);
 140
 141     *ppvObj = NULL;
 142
 143     if (IsEqualIID (riid, &IID_IUnknown) ||
 144         IsEqualIID (riid, &IID_IShellFolder) ||
 145         IsEqualIID (riid, &IID_IShellFolder2))
 146     {
 147         *ppvObj = This;
 148     }
 149     else if (IsEqualIID (riid, &IID_IPersist) ||
 150              IsEqualIID (riid, &IID_IPersistFolder) ||
 151              IsEqualIID (riid, &IID_IPersistFolder2))
 152     {
 153         *ppvObj = _IPersistFolder2_ (This);
 154     }
 155
 156     if (*ppvObj)
 157     {
 158         IUnknown_AddRef ((IUnknown *) (*ppvObj));
 159         TRACE ("-- Interface: (%p)->(%p)\n", ppvObj, *ppvObj);
 160         return S_OK;
 161     }
 162     TRACE ("-- Interface: E_NOINTERFACE\n");
 163     return E_NOINTERFACE;
 164 }
 165
 166 static ULONG WINAPI ISF_MyComputer_fnAddRef (IShellFolder2 * iface)
 167 {
 168     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 169     ULONG refCount = InterlockedIncrement(&This->ref);
 170
 171     TRACE ("(%p)->(count=%lu)\n", This, refCount - 1);
 172
 173     return refCount;
 174 }
 175
 176 static ULONG WINAPI ISF_MyComputer_fnRelease (IShellFolder2 * iface)
 177 {
 178     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 179     ULONG refCount = InterlockedDecrement(&This->ref);
 180
 181     TRACE ("(%p)->(count=%lu)\n", This, refCount + 1);
 182
 183     if (!refCount)
 184     {
 185         TRACE ("-- destroying IShellFolder(%p)\n", This);
 186         if (This->pidlRoot)
 187             SHFree (This->pidlRoot);
 188         LocalFree ((HLOCAL) This);
 189     }
 190     return refCount;
 191 }
 192
 193 /**************************************************************************
 194 *    ISF_MyComputer_fnParseDisplayName
 195 */
 196 static HRESULT WINAPI ISF_MyComputer_fnParseDisplayName (IShellFolder2 *iface,
 197                HWND hwndOwner, LPBC pbc, LPOLESTR lpszDisplayName,
 198                DWORD * pchEaten, LPITEMIDLIST * ppidl, DWORD * pdwAttributes)
 199 {
 200     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 201     HRESULT hr = E_INVALIDARG;
 202     LPCWSTR szNext = NULL;
 203     WCHAR szElement[MAX_PATH];
 204     LPITEMIDLIST pidlTemp = NULL;
 205     CLSID clsid;
 206
 207     TRACE("(%p)->(HWND=%p,%p,%p=%s,%p,pidl=%p,%p)\n", This,
 208           hwndOwner, pbc, lpszDisplayName, debugstr_w (lpszDisplayName),
 209           pchEaten, ppidl, pdwAttributes);
 210
 211     *ppidl = 0;
 212     if (pchEaten)
 213         *pchEaten = 0;        /* strange but like the original */
 214
 215     /* handle CLSID paths */
 216     if (lpszDisplayName[0] == ':' && lpszDisplayName[1] == ':')
 217     {
 218         szNext = GetNextElementW (lpszDisplayName, szElement, MAX_PATH);
 219         TRACE ("-- element: %s\n", debugstr_w (szElement));
 220         SHCLSIDFromStringW (szElement + 2, &clsid);
 221         pidlTemp = _ILCreateGuid (PT_GUID, &clsid);
 222     }
 223     /* do we have an absolute path name ? */
 224     else if (PathGetDriveNumberW (lpszDisplayName) >= 0 &&
 225               lpszDisplayName[2] == (WCHAR) '\\')
 226     {
 227         szNext = GetNextElementW (lpszDisplayName, szElement, MAX_PATH);
 228         /* make drive letter uppercase to enable PIDL comparison */
 229         szElement[0] = toupper(szElement[0]);
 230         pidlTemp = _ILCreateDrive (szElement);
 231     }
 232
 233     if (szNext && *szNext)
 234     {
 235         hr = SHELL32_ParseNextElement (iface, hwndOwner, pbc, &pidlTemp,
 236                               (LPOLESTR) szNext, pchEaten, pdwAttributes);
 237     }
 238     else
 239     {
 240         if (pdwAttributes && *pdwAttributes)
 241             SHELL32_GetItemAttributes (_IShellFolder_ (This),
 242                                        pidlTemp, pdwAttributes);
 243         hr = S_OK;
 244     }
 245
 246     *ppidl = pidlTemp;
 247
 248     TRACE ("(%p)->(-- ret=0x%08lx)\n", This, hr);
 249
 250     return hr;
 251 }
 252
 253 /**************************************************************************
 254  *  CreateMyCompEnumList()
 255  */
 256 static const WCHAR MyComputer_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','\\','M','y','C','o','m','p','u','t','e','r','\\','N','a','m',
 260  'e','s','p','a','c','e','\0' };
 261
 262 static BOOL CreateMyCompEnumList(IEnumIDList *list, DWORD dwFlags)
 263 {
 264     BOOL ret = TRUE;
 265
 266     TRACE("(%p)->(flags=0x%08lx) \n",list,dwFlags);
 267
 268     /* enumerate the folders */
 269     if (dwFlags & SHCONTF_FOLDERS)
 270     {
 271         WCHAR wszDriveName[] = {'A', ':', '\\', '\0'};
 272         DWORD dwDrivemap = GetLogicalDrives();
 273         HKEY hkey;
 274
 275         while (ret && wszDriveName[0]<='Z')
 276         {
 277             if(dwDrivemap & 0x00000001L)
 278                 ret = AddToEnumList(list, _ILCreateDrive(wszDriveName));
 279             wszDriveName[0]++;
 280             dwDrivemap = dwDrivemap >> 1;
 281         }
 282
 283         TRACE("-- (%p)-> enumerate (mycomputer shell extensions)\n",list);
 284         if (ret && !RegOpenKeyExW(HKEY_LOCAL_MACHINE, MyComputer_NameSpaceW,
 285          0, KEY_READ, &hkey))
 286         {
 287             WCHAR iid[50];
 288             int i=0;
 289
 290             while (ret)
 291             {
 292                 DWORD size;
 293                 LONG r;
 294
 295                 size = sizeof(iid) / sizeof(iid[0]);
 296                 r = RegEnumKeyExW(hkey, i, iid, &size, 0, NULL, NULL, NULL);
 297                 if (ERROR_SUCCESS == r)
 298                 {
 299                     /* FIXME: shell extensions, shouldn't the type be
 300                      * PT_SHELLEXT? */
 301                     ret = AddToEnumList(list, _ILCreateGuidFromStrW(iid));
 302                     i++;
 303                 }
 304                 else if (ERROR_NO_MORE_ITEMS == r)
 305                     break;
 306                 else
 307                     ret = FALSE;
 308             }
 309             RegCloseKey(hkey);
 310         }
 311     }
 312     return ret;
 313 }
 314
 315 /**************************************************************************
 316 *        ISF_MyComputer_fnEnumObjects
 317 */
 318 static HRESULT WINAPI ISF_MyComputer_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", This,
 324           hwndOwner, dwFlags, ppEnumIDList);
 325
 326     *ppEnumIDList = IEnumIDList_Constructor();
 327     if (*ppEnumIDList)
 328         CreateMyCompEnumList(*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_MyComputer_fnBindToObject
 337 */
 338 static HRESULT WINAPI ISF_MyComputer_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", This,
 344           pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 345
 346     return SHELL32_BindToChild (This->pidlRoot, NULL, pidl, riid, ppvOut);
 347 }
 348
 349 /**************************************************************************
 350 *    ISF_MyComputer_fnBindToStorage
 351 */
 352 static HRESULT WINAPI ISF_MyComputer_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", This,
 358           pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 359
 360     *ppvOut = NULL;
 361     return E_NOTIMPL;
 362 }
 363
 364 /**************************************************************************
 365 *     ISF_MyComputer_fnCompareIDs
 366 */
 367
 368 static HRESULT WINAPI ISF_MyComputer_fnCompareIDs (IShellFolder2 *iface,
 369                LPARAM lParam, LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 370 {
 371     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 372     int nReturn;
 373
 374     TRACE ("(%p)->(0x%08lx,pidl1=%p,pidl2=%p)\n", This, lParam, pidl1, pidl2);
 375     nReturn = SHELL32_CompareIDs (_IShellFolder_ (This), lParam, pidl1, pidl2);
 376     TRACE ("-- %i\n", nReturn);
 377     return nReturn;
 378 }
 379
 380 /**************************************************************************
 381 *    ISF_MyComputer_fnCreateViewObject
 382 */
 383 static HRESULT WINAPI ISF_MyComputer_fnCreateViewObject (IShellFolder2 *iface,
 384                HWND hwndOwner, REFIID riid, LPVOID * ppvOut)
 385 {
 386     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 387     LPSHELLVIEW pShellView;
 388     HRESULT hr = E_INVALIDARG;
 389
 390     TRACE("(%p)->(hwnd=%p,%s,%p)\n", This,
 391           hwndOwner, shdebugstr_guid (riid), ppvOut);
 392
 393     if (!ppvOut)
 394         return hr;
 395
 396     *ppvOut = NULL;
 397
 398     if (IsEqualIID (riid, &IID_IDropTarget))
 399     {
 400         WARN ("IDropTarget not implemented\n");
 401         hr = E_NOTIMPL;
 402     }
 403     else if (IsEqualIID (riid, &IID_IContextMenu))
 404     {
 405         WARN ("IContextMenu not implemented\n");
 406         hr = E_NOTIMPL;
 407     }
 408     else if (IsEqualIID (riid, &IID_IShellView))
 409     {
 410         pShellView = IShellView_Constructor ((IShellFolder *) iface);
 411         if (pShellView)
 412         {
 413             hr = IShellView_QueryInterface (pShellView, riid, ppvOut);
 414             IShellView_Release (pShellView);
 415         }
 416     }
 417     TRACE ("-- (%p)->(interface=%p)\n", This, ppvOut);
 418     return hr;
 419 }
 420
 421 /**************************************************************************
 422 *  ISF_MyComputer_fnGetAttributesOf
 423 */
 424 static HRESULT WINAPI ISF_MyComputer_fnGetAttributesOf (IShellFolder2 * iface,
 425                 UINT cidl, LPCITEMIDLIST * apidl, DWORD * rgfInOut)
 426 {
 427     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 428     HRESULT hr = S_OK;
 429
 430     TRACE ("(%p)->(cidl=%d apidl=%p mask=%p (0x%08lx))\n",
 431            This, cidl, apidl, rgfInOut, rgfInOut ? *rgfInOut : 0);
 432
 433     if (!rgfInOut)
 434         return E_INVALIDARG;
 435     if (cidl && !apidl)
 436         return E_INVALIDARG;
 437
 438     if (*rgfInOut == 0)
 439         *rgfInOut = ~0;
 440
 441     if(cidl == 0){
 442         IShellFolder *psfParent = NULL;
 443         LPCITEMIDLIST rpidl = NULL;
 444
 445         hr = SHBindToParent(This->pidlRoot, &IID_IShellFolder, (LPVOID*)&psfParent, (LPCITEMIDLIST*)&rpidl);
 446         if(SUCCEEDED(hr)) {
 447             SHELL32_GetItemAttributes (psfParent, rpidl, rgfInOut);
 448             IShellFolder_Release(psfParent);
 449         }
 450     } else {
 451         while (cidl > 0 && *apidl) {
 452             pdump (*apidl);
 453             SHELL32_GetItemAttributes (_IShellFolder_ (This), *apidl, rgfInOut);
 454             apidl++;
 455             cidl--;
 456         }
 457     }
 458     /* make sure SFGAO_VALIDATE is cleared, some apps depend on that */
 459     *rgfInOut &= ~SFGAO_VALIDATE;
 460
 461     TRACE ("-- result=0x%08lx\n", *rgfInOut);
 462     return hr;
 463 }
 464
 465 /**************************************************************************
 466 *    ISF_MyComputer_fnGetUIObjectOf
 467 *
 468 * PARAMETERS
 469 *  hwndOwner [in]  Parent window for any output
 470 *  cidl      [in]  array size
 471 *  apidl     [in]  simple pidl array
 472 *  riid      [in]  Requested Interface
 473 *  prgfInOut [   ] reserved
 474 *  ppvObject [out] Resulting Interface
 475 *
 476 */
 477 static HRESULT WINAPI ISF_MyComputer_fnGetUIObjectOf (IShellFolder2 * iface,
 478                 HWND hwndOwner, UINT cidl, LPCITEMIDLIST * apidl, REFIID riid,
 479                 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", This,
 488           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) && (cidl >= 1))
 496     {
 497         pObj = (LPUNKNOWN) ISvItemCm_Constructor ((IShellFolder *) iface,
 498                                               This->pidlRoot, apidl, cidl);
 499         hr = S_OK;
 500     }
 501     else if (IsEqualIID (riid, &IID_IDataObject) && (cidl >= 1))
 502     {
 503         pObj = (LPUNKNOWN) IDataObject_Constructor (hwndOwner,
 504                                               This->pidlRoot, apidl, cidl);
 505         hr = S_OK;
 506     }
 507     else if (IsEqualIID (riid, &IID_IExtractIconA) && (cidl == 1))
 508     {
 509         pidl = ILCombine (This->pidlRoot, apidl[0]);
 510         pObj = (LPUNKNOWN) IExtractIconA_Constructor (pidl);
 511         SHFree (pidl);
 512         hr = S_OK;
 513     }
 514     else if (IsEqualIID (riid, &IID_IExtractIconW) && (cidl == 1))
 515     {
 516         pidl = ILCombine (This->pidlRoot, apidl[0]);
 517         pObj = (LPUNKNOWN) IExtractIconW_Constructor (pidl);
 518         SHFree (pidl);
 519         hr = S_OK;
 520     }
 521     else if (IsEqualIID (riid, &IID_IDropTarget) && (cidl >= 1))
 522     {
 523         hr = IShellFolder_QueryInterface (iface, &IID_IDropTarget,
 524                                           (LPVOID *) &pObj);
 525     }
 526     else if ((IsEqualIID(riid,&IID_IShellLinkW) ||
 527               IsEqualIID(riid,&IID_IShellLinkA)) && (cidl == 1))
 528     {
 529         pidl = ILCombine (This->pidlRoot, apidl[0]);
 530         hr = IShellLink_ConstructFromFile(NULL, riid, pidl, (LPVOID*) &pObj);
 531         SHFree (pidl);
 532     }
 533     else
 534         hr = E_NOINTERFACE;
 535
 536     if (SUCCEEDED(hr) && !pObj)
 537         hr = E_OUTOFMEMORY;
 538
 539     *ppvOut = pObj;
 540     TRACE ("(%p)->hr=0x%08lx\n", This, hr);
 541     return hr;
 542 }
 543
 544 /**************************************************************************
 545 *    ISF_MyComputer_fnGetDisplayNameOf
 546 */
 547 static HRESULT WINAPI ISF_MyComputer_fnGetDisplayNameOf (IShellFolder2 *iface,
 548                LPCITEMIDLIST pidl, DWORD dwFlags, LPSTRRET strRet)
 549 {
 550     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 551
 552     char szPath[MAX_PATH];
 553     HRESULT hr = S_OK;
 554
 555     TRACE ("(%p)->(pidl=%p,0x%08lx,%p)\n", This, pidl, dwFlags, strRet);
 556     pdump (pidl);
 557
 558     if (!strRet)
 559         return E_INVALIDARG;
 560
 561     szPath[0] = 0x00;
 562
 563     if (!pidl->mkid.cb)
 564     {
 565         /* parsing name like ::{...} */
 566         lstrcpyA (szPath, "::");
 567         SHELL32_GUIDToStringA(&CLSID_MyComputer, &szPath[2]);
 568     }
 569     else if (_ILIsPidlSimple(pidl))
 570     {
 571         /* take names of special folders only if its only this folder */
 572         if (_ILIsSpecialFolder(pidl))
 573         {
 574             GUID const *clsid;
 575
 576             clsid = _ILGetGUIDPointer (pidl);
 577             if (clsid)
 578             {
 579                 if (GET_SHGDN_FOR (dwFlags) & SHGDN_FORPARSING)
 580                 {
 581                     static const WCHAR clsidW[] =
 582                      { 'C','L','S','I','D','\\',0 };
 583                     static const WCHAR shellfolderW[] =
 584                      { '\\','s','h','e','l','l','f','o','l','d','e','r',0 };
 585                     static const WCHAR wantsForParsingW[] =
 586                      { 'W','a','n','t','s','F','o','r','P','a','r','s','i','n',
 587                      'g',0 };
 588                     int bWantsForParsing = FALSE;
 589                     WCHAR szRegPath[100];
 590                     LONG r;
 591
 592                     /*
 593                      * We can only get a filesystem path from a shellfolder
 594                      * if the value WantsFORPARSING exists in
 595                      *      CLSID\\{...}\\shellfolder
 596                      * exception: the MyComputer folder has this keys not
 597                      *            but like any filesystem backed
 598                      *            folder it needs these behaviour
 599                      *
 600                      * Get the "WantsFORPARSING" flag from the registry
 601                      */
 602
 603                     lstrcpyW (szRegPath, clsidW);
 604                     SHELL32_GUIDToStringW (clsid, &szRegPath[6]);
 605                     lstrcatW (szRegPath, shellfolderW);
 606                     r = SHGetValueW (HKEY_CLASSES_ROOT, szRegPath,
 607                                      wantsForParsingW, NULL, NULL, NULL);
 608                     if (r == ERROR_SUCCESS)
 609                         bWantsForParsing = TRUE;
 610
 611                     if ((GET_SHGDN_RELATION (dwFlags) == SHGDN_NORMAL) &&
 612                         bWantsForParsing)
 613                     {
 614                         /*
 615                          * We need the filesystem path to the destination folder
 616                          * Only the folder itself can know it
 617                          */
 618                         hr = SHELL32_GetDisplayNameOfChild (iface, pidl,
 619                                                 dwFlags, szPath, MAX_PATH);
 620                     }
 621                     else
 622                     {
 623                         LPSTR p;
 624
 625                         /* parsing name like ::{...} */
 626                         p = lstrcpyA(szPath, "::") + 2;
 627                         p += SHELL32_GUIDToStringA(&CLSID_MyComputer, p);
 628
 629                         lstrcatA(p, "\\::");
 630                         p += 3;
 631                         SHELL32_GUIDToStringA(clsid, p);
 632                     }
 633                 }
 634                 else
 635                 {
 636                     /* user friendly name */
 637                     HCR_GetClassNameA (clsid, szPath, MAX_PATH);
 638                 }
 639             }
 640             else
 641             {
 642                 /* append my own path */
 643                 _ILSimpleGetText (pidl, szPath, MAX_PATH);
 644             }
 645         }
 646         else if (_ILIsDrive(pidl))
 647         {
 648             _ILSimpleGetText (pidl, szPath, MAX_PATH);    /* append my own path */
 649
 650             /* long view "lw_name (C:)" */
 651             if (!(dwFlags & SHGDN_FORPARSING))
 652             {
 653                 DWORD dwVolumeSerialNumber, dwMaximumComponetLength, dwFileSystemFlags;
 654                 char szDrive[18] = "";
 655
 656                 GetVolumeInformationA (szPath, szDrive, sizeof (szDrive) - 6,
 657                            &dwVolumeSerialNumber,
 658                            &dwMaximumComponetLength, &dwFileSystemFlags, NULL, 0);
 659                 strcat (szDrive, " (");
 660                 strncat (szDrive, szPath, 2);
 661                 strcat (szDrive, ")");
 662                 strcpy (szPath, szDrive);
 663             }
 664         }
 665         else
 666         {
 667             /* Neither a shell namespace extension nor a drive letter. */
 668             ERR("Wrong pidl type\n");
 669             return E_INVALIDARG;
 670         }
 671     }
 672     else
 673     {
 674         /* Complex pidl. Let the child folder do the work */
 675         strRet->uType = STRRET_CSTR;
 676         hr = SHELL32_GetDisplayNameOfChild(iface, pidl, dwFlags, szPath, MAX_PATH);
 677     }
 678
 679     if (SUCCEEDED (hr))
 680     {
 681         strRet->uType = STRRET_CSTR;
 682         lstrcpynA (strRet->u.cStr, szPath, MAX_PATH);
 683     }
 684
 685     TRACE ("-- (%p)->(%s)\n", This, szPath);
 686     return hr;
 687 }
 688
 689 /**************************************************************************
 690 *  ISF_MyComputer_fnSetNameOf
 691 *  Changes the name of a file object or subfolder, possibly changing its item
 692 *  identifier in the process.
 693 *
 694 * PARAMETERS
 695 *  hwndOwner  [in]   Owner window for output
 696 *  pidl       [in]   simple pidl of item to change
 697 *  lpszName   [in]   the items new display name
 698 *  dwFlags    [in]   SHGNO formatting flags
 699 *  ppidlOut   [out]  simple pidl returned
 700 */
 701 static HRESULT WINAPI ISF_MyComputer_fnSetNameOf (
 702                IShellFolder2 * iface, HWND hwndOwner, LPCITEMIDLIST pidl,
 703                LPCOLESTR lpName, DWORD dwFlags, LPITEMIDLIST * pPidlOut)
 704 {
 705     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 706     FIXME ("(%p)->(%p,pidl=%p,%s,%lu,%p)\n", This,
 707            hwndOwner, pidl, debugstr_w (lpName), dwFlags, pPidlOut);
 708     return E_FAIL;
 709 }
 710
 711 static HRESULT WINAPI ISF_MyComputer_fnGetDefaultSearchGUID (
 712                IShellFolder2 * iface, GUID * pguid)
 713 {
 714     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 715     FIXME ("(%p)\n", This);
 716     return E_NOTIMPL;
 717 }
 718 static HRESULT WINAPI ISF_MyComputer_fnEnumSearches (
 719                IShellFolder2 * iface, IEnumExtraSearch ** ppenum)
 720 {
 721     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 722     FIXME ("(%p)\n", This);
 723     return E_NOTIMPL;
 724 }
 725 static HRESULT WINAPI ISF_MyComputer_fnGetDefaultColumn (
 726                IShellFolder2 *iface, DWORD dwRes, ULONG *pSort, ULONG *pDisplay)
 727 {
 728     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 729
 730     TRACE ("(%p)\n", This);
 731
 732     if (pSort)
 733          *pSort = 0;
 734     if (pDisplay)
 735         *pDisplay = 0;
 736     return S_OK;
 737 }
 738 static HRESULT WINAPI ISF_MyComputer_fnGetDefaultColumnState (
 739                IShellFolder2 * iface, UINT iColumn, DWORD * pcsFlags)
 740 {
 741     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 742
 743     TRACE ("(%p)\n", This);
 744
 745     if (!pcsFlags || iColumn >= MYCOMPUTERSHELLVIEWCOLUMNS)
 746         return E_INVALIDARG;
 747     *pcsFlags = MyComputerSFHeader[iColumn].pcsFlags;
 748     return S_OK;
 749 }
 750
 751 static HRESULT WINAPI ISF_MyComputer_fnGetDetailsEx (IShellFolder2 * iface,
 752                LPCITEMIDLIST pidl, const SHCOLUMNID * pscid, VARIANT * pv)
 753 {
 754     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 755     FIXME ("(%p)\n", This);
 756     return E_NOTIMPL;
 757 }
 758
 759 /* FIXME: drive size >4GB is rolling over */
 760 static HRESULT WINAPI ISF_MyComputer_fnGetDetailsOf (IShellFolder2 * iface,
 761                LPCITEMIDLIST pidl, UINT iColumn, SHELLDETAILS * psd)
 762 {
 763     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 764     HRESULT hr;
 765
 766     TRACE ("(%p)->(%p %i %p)\n", This, pidl, iColumn, psd);
 767
 768     if (!psd || iColumn >= MYCOMPUTERSHELLVIEWCOLUMNS)
 769         return E_INVALIDARG;
 770
 771     if (!pidl)
 772     {
 773         psd->fmt = MyComputerSFHeader[iColumn].fmt;
 774         psd->cxChar = MyComputerSFHeader[iColumn].cxChar;
 775         psd->str.uType = STRRET_CSTR;
 776         LoadStringA (shell32_hInstance, MyComputerSFHeader[iColumn].colnameid,
 777                      psd->str.u.cStr, MAX_PATH);
 778         return S_OK;
 779     }
 780     else
 781     {
 782         char szPath[MAX_PATH];
 783         ULARGE_INTEGER ulBytes;
 784
 785         psd->str.u.cStr[0] = 0x00;
 786         psd->str.uType = STRRET_CSTR;
 787         switch (iColumn)
 788         {
 789         case 0:        /* name */
 790             hr = IShellFolder_GetDisplayNameOf (iface, pidl,
 791                        SHGDN_NORMAL | SHGDN_INFOLDER, &psd->str);
 792             break;
 793         case 1:        /* type */
 794             _ILGetFileType (pidl, psd->str.u.cStr, MAX_PATH);
 795             break;
 796         case 2:        /* total size */
 797             if (_ILIsDrive (pidl))
 798             {
 799                 _ILSimpleGetText (pidl, szPath, MAX_PATH);
 800                 GetDiskFreeSpaceExA (szPath, NULL, &ulBytes, NULL);
 801                 StrFormatByteSizeA (ulBytes.u.LowPart, psd->str.u.cStr, MAX_PATH);
 802             }
 803             break;
 804         case 3:        /* free size */
 805             if (_ILIsDrive (pidl))
 806             {
 807                 _ILSimpleGetText (pidl, szPath, MAX_PATH);
 808                 GetDiskFreeSpaceExA (szPath, &ulBytes, NULL, NULL);
 809                 StrFormatByteSizeA (ulBytes.u.LowPart, psd->str.u.cStr, MAX_PATH);
 810             }
 811             break;
 812         }
 813         hr = S_OK;
 814     }
 815
 816     return hr;
 817 }
 818
 819 static HRESULT WINAPI ISF_MyComputer_fnMapColumnToSCID (
 820                IShellFolder2 * iface, UINT column, SHCOLUMNID * pscid)
 821 {
 822     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 823     FIXME ("(%p)\n", This);
 824     return E_NOTIMPL;
 825 }
 826
 827 static const IShellFolder2Vtbl vt_ShellFolder2 =
 828 {
 829     ISF_MyComputer_fnQueryInterface,
 830     ISF_MyComputer_fnAddRef,
 831     ISF_MyComputer_fnRelease,
 832     ISF_MyComputer_fnParseDisplayName,
 833     ISF_MyComputer_fnEnumObjects,
 834     ISF_MyComputer_fnBindToObject,
 835     ISF_MyComputer_fnBindToStorage,
 836     ISF_MyComputer_fnCompareIDs,
 837     ISF_MyComputer_fnCreateViewObject,
 838     ISF_MyComputer_fnGetAttributesOf,
 839     ISF_MyComputer_fnGetUIObjectOf,
 840     ISF_MyComputer_fnGetDisplayNameOf,
 841     ISF_MyComputer_fnSetNameOf,
 842     /* ShellFolder2 */
 843     ISF_MyComputer_fnGetDefaultSearchGUID,
 844     ISF_MyComputer_fnEnumSearches,
 845     ISF_MyComputer_fnGetDefaultColumn,
 846     ISF_MyComputer_fnGetDefaultColumnState,
 847     ISF_MyComputer_fnGetDetailsEx,
 848     ISF_MyComputer_fnGetDetailsOf,
 849     ISF_MyComputer_fnMapColumnToSCID
 850 };
 851
 852 /************************************************************************
 853  *    IMCFldr_PersistFolder2_QueryInterface
 854  */
 855 static HRESULT WINAPI IMCFldr_PersistFolder2_QueryInterface (
 856                IPersistFolder2 * iface, REFIID iid, LPVOID * ppvObj)
 857 {
 858     _ICOM_THIS_From_IPersistFolder2 (IGenericSFImpl, iface);
 859
 860     TRACE ("(%p)\n", This);
 861
 862     return IUnknown_QueryInterface (_IUnknown_ (This), iid, ppvObj);
 863 }
 864
 865 /************************************************************************
 866  *    IMCFldr_PersistFolder2_AddRef
 867  */
 868 static ULONG WINAPI IMCFldr_PersistFolder2_AddRef (IPersistFolder2 * iface)
 869 {
 870     _ICOM_THIS_From_IPersistFolder2 (IGenericSFImpl, iface);
 871
 872     TRACE ("(%p)->(count=%lu)\n", This, This->ref);
 873
 874     return IUnknown_AddRef (_IUnknown_ (This));
 875 }
 876
 877 /************************************************************************
 878  *    ISFPersistFolder_Release
 879  */
 880 static ULONG WINAPI IMCFldr_PersistFolder2_Release (IPersistFolder2 * iface)
 881 {
 882     _ICOM_THIS_From_IPersistFolder2 (IGenericSFImpl, iface);
 883
 884     TRACE ("(%p)->(count=%lu)\n", This, This->ref);
 885
 886     return IUnknown_Release (_IUnknown_ (This));
 887 }
 888
 889 /************************************************************************
 890  *    IMCFldr_PersistFolder2_GetClassID
 891  */
 892 static HRESULT WINAPI IMCFldr_PersistFolder2_GetClassID (
 893                IPersistFolder2 * iface, CLSID * lpClassId)
 894 {
 895     _ICOM_THIS_From_IPersistFolder2 (IGenericSFImpl, iface);
 896
 897     TRACE ("(%p)\n", This);
 898
 899     if (!lpClassId)
 900     return E_POINTER;
 901     *lpClassId = CLSID_MyComputer;
 902
 903     return S_OK;
 904 }
 905
 906 /************************************************************************
 907  *    IMCFldr_PersistFolder2_Initialize
 908  *
 909  * NOTES: it makes no sense to change the pidl
 910  */
 911 static HRESULT WINAPI IMCFldr_PersistFolder2_Initialize (
 912                IPersistFolder2 * iface, LPCITEMIDLIST pidl)
 913 {
 914     _ICOM_THIS_From_IPersistFolder2 (IGenericSFImpl, iface);
 915     TRACE ("(%p)->(%p)\n", This, pidl);
 916     return E_NOTIMPL;
 917 }
 918
 919 /**************************************************************************
 920  *    IPersistFolder2_fnGetCurFolder
 921  */
 922 static HRESULT WINAPI IMCFldr_PersistFolder2_GetCurFolder (
 923                IPersistFolder2 * iface, LPITEMIDLIST * pidl)
 924 {
 925     _ICOM_THIS_From_IPersistFolder2 (IGenericSFImpl, iface);
 926
 927     TRACE ("(%p)->(%p)\n", This, pidl);
 928
 929     if (!pidl)
 930         return E_POINTER;
 931     *pidl = ILClone (This->pidlRoot);
 932     return S_OK;
 933 }
 934
 935 static const IPersistFolder2Vtbl vt_PersistFolder2 =
 936 {
 937     IMCFldr_PersistFolder2_QueryInterface,
 938     IMCFldr_PersistFolder2_AddRef,
 939     IMCFldr_PersistFolder2_Release,
 940     IMCFldr_PersistFolder2_GetClassID,
 941     IMCFldr_PersistFolder2_Initialize,
 942     IMCFldr_PersistFolder2_GetCurFolder
 943 };