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 static inline IGenericSFImpl *impl_from_IPersistFolder2( IPersistFolder2 *iface )
  70 {
  71     return (IGenericSFImpl *)((char*)iface - FIELD_OFFSET(IGenericSFImpl, lpVtblPersistFolder2));
  72 }
  73
  74
  75 /*
  76   converts This to an interface pointer
  77 */
  78 #define _IUnknown_(This)    (IUnknown*)&(This->lpVtbl)
  79 #define _IShellFolder_(This)    (IShellFolder*)&(This->lpVtbl)
  80 #define _IShellFolder2_(This)    (IShellFolder2*)&(This->lpVtbl)
  81
  82 #define _IPersist_(This)    (IPersist*)&(This->lpVtblPersistFolder2)
  83 #define _IPersistFolder_(This)    (IPersistFolder*)&(This->lpVtblPersistFolder2)
  84 #define _IPersistFolder2_(This)    (IPersistFolder2*)&(This->lpVtblPersistFolder2)
  85
  86 /***********************************************************************
  87 *   IShellFolder [MyComputer] implementation
  88 */
  89
  90 static const shvheader MyComputerSFHeader[] = {
  91     {IDS_SHV_COLUMN1, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 15},
  92     {IDS_SHV_COLUMN3, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 10},
  93     {IDS_SHV_COLUMN6, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 10},
  94     {IDS_SHV_COLUMN7, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 10},
  95 };
  96
  97 #define MYCOMPUTERSHELLVIEWCOLUMNS 4
  98
  99 /**************************************************************************
 100 *    ISF_MyComputer_Constructor
 101 */
 102 HRESULT WINAPI ISF_MyComputer_Constructor (IUnknown * pUnkOuter, REFIID riid, LPVOID * ppv)
 103 {
 104     IGenericSFImpl *sf;
 105
 106     TRACE ("unkOut=%p %s\n", pUnkOuter, shdebugstr_guid (riid));
 107
 108     if (!ppv)
 109         return E_POINTER;
 110     if (pUnkOuter)
 111         return CLASS_E_NOAGGREGATION;
 112
 113     sf = LocalAlloc (LMEM_ZEROINIT, sizeof (IGenericSFImpl));
 114     if (!sf)
 115         return E_OUTOFMEMORY;
 116
 117     sf->ref = 0;
 118     sf->lpVtbl = &vt_ShellFolder2;
 119     sf->lpVtblPersistFolder2 = &vt_PersistFolder2;
 120     sf->pidlRoot = _ILCreateMyComputer ();    /* my qualified pidl */
 121
 122     if (!SUCCEEDED (IUnknown_QueryInterface (_IUnknown_ (sf), riid, ppv)))
 123     {
 124         IUnknown_Release (_IUnknown_ (sf));
 125         return E_NOINTERFACE;
 126     }
 127
 128     TRACE ("--(%p)\n", sf);
 129     return S_OK;
 130 }
 131
 132 /**************************************************************************
 133  *    ISF_MyComputer_fnQueryInterface
 134  *
 135  * NOTES supports not IPersist/IPersistFolder
 136  */
 137 static HRESULT WINAPI ISF_MyComputer_fnQueryInterface (IShellFolder2 *iface,
 138                REFIID riid, LPVOID *ppvObj)
 139 {
 140     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 141
 142     TRACE ("(%p)->(%s,%p)\n", This, shdebugstr_guid (riid), ppvObj);
 143
 144     *ppvObj = NULL;
 145
 146     if (IsEqualIID (riid, &IID_IUnknown) ||
 147         IsEqualIID (riid, &IID_IShellFolder) ||
 148         IsEqualIID (riid, &IID_IShellFolder2))
 149     {
 150         *ppvObj = This;
 151     }
 152     else if (IsEqualIID (riid, &IID_IPersist) ||
 153              IsEqualIID (riid, &IID_IPersistFolder) ||
 154              IsEqualIID (riid, &IID_IPersistFolder2))
 155     {
 156         *ppvObj = _IPersistFolder2_ (This);
 157     }
 158
 159     if (*ppvObj)
 160     {
 161         IUnknown_AddRef ((IUnknown *) (*ppvObj));
 162         TRACE ("-- Interface: (%p)->(%p)\n", ppvObj, *ppvObj);
 163         return S_OK;
 164     }
 165     TRACE ("-- Interface: E_NOINTERFACE\n");
 166     return E_NOINTERFACE;
 167 }
 168
 169 static ULONG WINAPI ISF_MyComputer_fnAddRef (IShellFolder2 * iface)
 170 {
 171     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 172     ULONG refCount = InterlockedIncrement(&This->ref);
 173
 174     TRACE ("(%p)->(count=%lu)\n", This, refCount - 1);
 175
 176     return refCount;
 177 }
 178
 179 static ULONG WINAPI ISF_MyComputer_fnRelease (IShellFolder2 * iface)
 180 {
 181     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 182     ULONG refCount = InterlockedDecrement(&This->ref);
 183
 184     TRACE ("(%p)->(count=%lu)\n", This, refCount + 1);
 185
 186     if (!refCount)
 187     {
 188         TRACE ("-- destroying IShellFolder(%p)\n", This);
 189         if (This->pidlRoot)
 190             SHFree (This->pidlRoot);
 191         LocalFree ((HLOCAL) This);
 192     }
 193     return refCount;
 194 }
 195
 196 /**************************************************************************
 197 *    ISF_MyComputer_fnParseDisplayName
 198 */
 199 static HRESULT WINAPI ISF_MyComputer_fnParseDisplayName (IShellFolder2 *iface,
 200                HWND hwndOwner, LPBC pbc, LPOLESTR lpszDisplayName,
 201                DWORD * pchEaten, LPITEMIDLIST * ppidl, DWORD * pdwAttributes)
 202 {
 203     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 204     HRESULT hr = E_INVALIDARG;
 205     LPCWSTR szNext = NULL;
 206     WCHAR szElement[MAX_PATH];
 207     LPITEMIDLIST pidlTemp = NULL;
 208     CLSID clsid;
 209
 210     TRACE("(%p)->(HWND=%p,%p,%p=%s,%p,pidl=%p,%p)\n", This,
 211           hwndOwner, pbc, lpszDisplayName, debugstr_w (lpszDisplayName),
 212           pchEaten, ppidl, pdwAttributes);
 213
 214     *ppidl = 0;
 215     if (pchEaten)
 216         *pchEaten = 0;        /* strange but like the original */
 217
 218     /* handle CLSID paths */
 219     if (lpszDisplayName[0] == ':' && lpszDisplayName[1] == ':')
 220     {
 221         szNext = GetNextElementW (lpszDisplayName, szElement, MAX_PATH);
 222         TRACE ("-- element: %s\n", debugstr_w (szElement));
 223         SHCLSIDFromStringW (szElement + 2, &clsid);
 224         pidlTemp = _ILCreateGuid (PT_GUID, &clsid);
 225     }
 226     /* do we have an absolute path name ? */
 227     else if (PathGetDriveNumberW (lpszDisplayName) >= 0 &&
 228               lpszDisplayName[2] == (WCHAR) '\\')
 229     {
 230         szNext = GetNextElementW (lpszDisplayName, szElement, MAX_PATH);
 231         /* make drive letter uppercase to enable PIDL comparison */
 232         szElement[0] = toupper(szElement[0]);
 233         pidlTemp = _ILCreateDrive (szElement);
 234     }
 235
 236     if (szNext && *szNext)
 237     {
 238         hr = SHELL32_ParseNextElement (iface, hwndOwner, pbc, &pidlTemp,
 239                               (LPOLESTR) szNext, pchEaten, pdwAttributes);
 240     }
 241     else
 242     {
 243         if (pdwAttributes && *pdwAttributes)
 244             SHELL32_GetItemAttributes (_IShellFolder_ (This),
 245                                        pidlTemp, pdwAttributes);
 246         hr = S_OK;
 247     }
 248
 249     *ppidl = pidlTemp;
 250
 251     TRACE ("(%p)->(-- ret=0x%08lx)\n", This, hr);
 252
 253     return hr;
 254 }
 255
 256 /**************************************************************************
 257  *  CreateMyCompEnumList()
 258  */
 259 static const WCHAR MyComputer_NameSpaceW[] = { 'S','O','F','T','W','A','R','E',
 260  '\\','M','i','c','r','o','s','o','f','t','\\','W','i','n','d','o','w','s','\\',
 261  'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\','E','x','p','l',
 262  'o','r','e','r','\\','M','y','C','o','m','p','u','t','e','r','\\','N','a','m',
 263  'e','s','p','a','c','e','\0' };
 264
 265 static BOOL CreateMyCompEnumList(IEnumIDList *list, DWORD dwFlags)
 266 {
 267     BOOL ret = TRUE;
 268
 269     TRACE("(%p)->(flags=0x%08lx) \n",list,dwFlags);
 270
 271     /* enumerate the folders */
 272     if (dwFlags & SHCONTF_FOLDERS)
 273     {
 274         WCHAR wszDriveName[] = {'A', ':', '\\', '\0'};
 275         DWORD dwDrivemap = GetLogicalDrives();
 276         HKEY hkey;
 277
 278         while (ret && wszDriveName[0]<='Z')
 279         {
 280             if(dwDrivemap & 0x00000001L)
 281                 ret = AddToEnumList(list, _ILCreateDrive(wszDriveName));
 282             wszDriveName[0]++;
 283             dwDrivemap = dwDrivemap >> 1;
 284         }
 285
 286         TRACE("-- (%p)-> enumerate (mycomputer shell extensions)\n",list);
 287         if (ret && !RegOpenKeyExW(HKEY_LOCAL_MACHINE, MyComputer_NameSpaceW,
 288          0, KEY_READ, &hkey))
 289         {
 290             WCHAR iid[50];
 291             int i=0;
 292
 293             while (ret)
 294             {
 295                 DWORD size;
 296                 LONG r;
 297
 298                 size = sizeof(iid) / sizeof(iid[0]);
 299                 r = RegEnumKeyExW(hkey, i, iid, &size, 0, NULL, NULL, NULL);
 300                 if (ERROR_SUCCESS == r)
 301                 {
 302                     /* FIXME: shell extensions, shouldn't the type be
 303                      * PT_SHELLEXT? */
 304                     ret = AddToEnumList(list, _ILCreateGuidFromStrW(iid));
 305                     i++;
 306                 }
 307                 else if (ERROR_NO_MORE_ITEMS == r)
 308                     break;
 309                 else
 310                     ret = FALSE;
 311             }
 312             RegCloseKey(hkey);
 313         }
 314     }
 315     return ret;
 316 }
 317
 318 /**************************************************************************
 319 *        ISF_MyComputer_fnEnumObjects
 320 */
 321 static HRESULT WINAPI ISF_MyComputer_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", This,
 327           hwndOwner, dwFlags, ppEnumIDList);
 328
 329     *ppEnumIDList = IEnumIDList_Constructor();
 330     if (*ppEnumIDList)
 331         CreateMyCompEnumList(*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_MyComputer_fnBindToObject
 340 */
 341 static HRESULT WINAPI ISF_MyComputer_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", This,
 347           pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 348
 349     return SHELL32_BindToChild (This->pidlRoot, NULL, pidl, riid, ppvOut);
 350 }
 351
 352 /**************************************************************************
 353 *    ISF_MyComputer_fnBindToStorage
 354 */
 355 static HRESULT WINAPI ISF_MyComputer_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", This,
 361           pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 362
 363     *ppvOut = NULL;
 364     return E_NOTIMPL;
 365 }
 366
 367 /**************************************************************************
 368 *     ISF_MyComputer_fnCompareIDs
 369 */
 370
 371 static HRESULT WINAPI ISF_MyComputer_fnCompareIDs (IShellFolder2 *iface,
 372                LPARAM lParam, LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 373 {
 374     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 375     int nReturn;
 376
 377     TRACE ("(%p)->(0x%08lx,pidl1=%p,pidl2=%p)\n", This, lParam, pidl1, pidl2);
 378     nReturn = SHELL32_CompareIDs (_IShellFolder_ (This), lParam, pidl1, pidl2);
 379     TRACE ("-- %i\n", nReturn);
 380     return nReturn;
 381 }
 382
 383 /**************************************************************************
 384 *    ISF_MyComputer_fnCreateViewObject
 385 */
 386 static HRESULT WINAPI ISF_MyComputer_fnCreateViewObject (IShellFolder2 *iface,
 387                HWND hwndOwner, REFIID riid, LPVOID * ppvOut)
 388 {
 389     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 390     LPSHELLVIEW pShellView;
 391     HRESULT hr = E_INVALIDARG;
 392
 393     TRACE("(%p)->(hwnd=%p,%s,%p)\n", This,
 394           hwndOwner, shdebugstr_guid (riid), ppvOut);
 395
 396     if (!ppvOut)
 397         return hr;
 398
 399     *ppvOut = NULL;
 400
 401     if (IsEqualIID (riid, &IID_IDropTarget))
 402     {
 403         WARN ("IDropTarget not implemented\n");
 404         hr = E_NOTIMPL;
 405     }
 406     else if (IsEqualIID (riid, &IID_IContextMenu))
 407     {
 408         WARN ("IContextMenu not implemented\n");
 409         hr = E_NOTIMPL;
 410     }
 411     else if (IsEqualIID (riid, &IID_IShellView))
 412     {
 413         pShellView = IShellView_Constructor ((IShellFolder *) iface);
 414         if (pShellView)
 415         {
 416             hr = IShellView_QueryInterface (pShellView, riid, ppvOut);
 417             IShellView_Release (pShellView);
 418         }
 419     }
 420     TRACE ("-- (%p)->(interface=%p)\n", This, ppvOut);
 421     return hr;
 422 }
 423
 424 /**************************************************************************
 425 *  ISF_MyComputer_fnGetAttributesOf
 426 */
 427 static HRESULT WINAPI ISF_MyComputer_fnGetAttributesOf (IShellFolder2 * iface,
 428                 UINT cidl, LPCITEMIDLIST * apidl, DWORD * rgfInOut)
 429 {
 430     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 431     HRESULT hr = S_OK;
 432
 433     TRACE ("(%p)->(cidl=%d apidl=%p mask=%p (0x%08lx))\n",
 434            This, cidl, apidl, rgfInOut, rgfInOut ? *rgfInOut : 0);
 435
 436     if (!rgfInOut)
 437         return E_INVALIDARG;
 438     if (cidl && !apidl)
 439         return E_INVALIDARG;
 440
 441     if (*rgfInOut == 0)
 442         *rgfInOut = ~0;
 443
 444     if(cidl == 0){
 445         IShellFolder *psfParent = NULL;
 446         LPCITEMIDLIST rpidl = NULL;
 447
 448         hr = SHBindToParent(This->pidlRoot, &IID_IShellFolder, (LPVOID*)&psfParent, (LPCITEMIDLIST*)&rpidl);
 449         if(SUCCEEDED(hr)) {
 450             SHELL32_GetItemAttributes (psfParent, rpidl, rgfInOut);
 451             IShellFolder_Release(psfParent);
 452         }
 453     } else {
 454         while (cidl > 0 && *apidl) {
 455             pdump (*apidl);
 456             SHELL32_GetItemAttributes (_IShellFolder_ (This), *apidl, rgfInOut);
 457             apidl++;
 458             cidl--;
 459         }
 460     }
 461     /* make sure SFGAO_VALIDATE is cleared, some apps depend on that */
 462     *rgfInOut &= ~SFGAO_VALIDATE;
 463
 464     TRACE ("-- result=0x%08lx\n", *rgfInOut);
 465     return hr;
 466 }
 467
 468 /**************************************************************************
 469 *    ISF_MyComputer_fnGetUIObjectOf
 470 *
 471 * PARAMETERS
 472 *  hwndOwner [in]  Parent window for any output
 473 *  cidl      [in]  array size
 474 *  apidl     [in]  simple pidl array
 475 *  riid      [in]  Requested Interface
 476 *  prgfInOut [   ] reserved
 477 *  ppvObject [out] Resulting Interface
 478 *
 479 */
 480 static HRESULT WINAPI ISF_MyComputer_fnGetUIObjectOf (IShellFolder2 * iface,
 481                 HWND hwndOwner, UINT cidl, LPCITEMIDLIST * apidl, REFIID riid,
 482                 UINT * prgfInOut, LPVOID * ppvOut)
 483 {
 484     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 485
 486     LPITEMIDLIST pidl;
 487     IUnknown *pObj = NULL;
 488     HRESULT hr = E_INVALIDARG;
 489
 490     TRACE("(%p)->(%p,%u,apidl=%p,%s,%p,%p)\n", This,
 491           hwndOwner, cidl, apidl, shdebugstr_guid (riid), prgfInOut, ppvOut);
 492
 493     if (!ppvOut)
 494         return hr;
 495
 496     *ppvOut = NULL;
 497
 498     if (IsEqualIID (riid, &IID_IContextMenu) && (cidl >= 1))
 499     {
 500         pObj = (LPUNKNOWN) ISvItemCm_Constructor ((IShellFolder *) iface,
 501                                               This->pidlRoot, apidl, cidl);
 502         hr = S_OK;
 503     }
 504     else if (IsEqualIID (riid, &IID_IDataObject) && (cidl >= 1))
 505     {
 506         pObj = (LPUNKNOWN) IDataObject_Constructor (hwndOwner,
 507                                               This->pidlRoot, apidl, cidl);
 508         hr = S_OK;
 509     }
 510     else if (IsEqualIID (riid, &IID_IExtractIconA) && (cidl == 1))
 511     {
 512         pidl = ILCombine (This->pidlRoot, apidl[0]);
 513         pObj = (LPUNKNOWN) IExtractIconA_Constructor (pidl);
 514         SHFree (pidl);
 515         hr = S_OK;
 516     }
 517     else if (IsEqualIID (riid, &IID_IExtractIconW) && (cidl == 1))
 518     {
 519         pidl = ILCombine (This->pidlRoot, apidl[0]);
 520         pObj = (LPUNKNOWN) IExtractIconW_Constructor (pidl);
 521         SHFree (pidl);
 522         hr = S_OK;
 523     }
 524     else if (IsEqualIID (riid, &IID_IDropTarget) && (cidl >= 1))
 525     {
 526         hr = IShellFolder_QueryInterface (iface, &IID_IDropTarget,
 527                                           (LPVOID *) &pObj);
 528     }
 529     else if ((IsEqualIID(riid,&IID_IShellLinkW) ||
 530               IsEqualIID(riid,&IID_IShellLinkA)) && (cidl == 1))
 531     {
 532         pidl = ILCombine (This->pidlRoot, apidl[0]);
 533         hr = IShellLink_ConstructFromFile(NULL, riid, pidl, (LPVOID*) &pObj);
 534         SHFree (pidl);
 535     }
 536     else
 537         hr = E_NOINTERFACE;
 538
 539     if (SUCCEEDED(hr) && !pObj)
 540         hr = E_OUTOFMEMORY;
 541
 542     *ppvOut = pObj;
 543     TRACE ("(%p)->hr=0x%08lx\n", This, hr);
 544     return hr;
 545 }
 546
 547 /**************************************************************************
 548 *    ISF_MyComputer_fnGetDisplayNameOf
 549 */
 550 static HRESULT WINAPI ISF_MyComputer_fnGetDisplayNameOf (IShellFolder2 *iface,
 551                LPCITEMIDLIST pidl, DWORD dwFlags, LPSTRRET strRet)
 552 {
 553     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 554
 555     char szPath[MAX_PATH];
 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     szPath[0] = 0x00;
 565
 566     if (!pidl->mkid.cb)
 567     {
 568         /* parsing name like ::{...} */
 569         lstrcpyA (szPath, "::");
 570         SHELL32_GUIDToStringA(&CLSID_MyComputer, &szPath[2]);
 571     }
 572     else if (_ILIsPidlSimple(pidl))
 573     {
 574         /* take names of special folders only if its only this folder */
 575         if (_ILIsSpecialFolder(pidl))
 576         {
 577             GUID const *clsid;
 578
 579             clsid = _ILGetGUIDPointer (pidl);
 580             if (clsid)
 581             {
 582                 if (GET_SHGDN_FOR (dwFlags) & SHGDN_FORPARSING)
 583                 {
 584                     static const WCHAR clsidW[] =
 585                      { 'C','L','S','I','D','\\',0 };
 586                     static const WCHAR shellfolderW[] =
 587                      { '\\','s','h','e','l','l','f','o','l','d','e','r',0 };
 588                     static const WCHAR wantsForParsingW[] =
 589                      { 'W','a','n','t','s','F','o','r','P','a','r','s','i','n',
 590                      'g',0 };
 591                     int bWantsForParsing = FALSE;
 592                     WCHAR szRegPath[100];
 593                     LONG r;
 594
 595                     /*
 596                      * We can only get a filesystem path from a shellfolder
 597                      * if the value WantsFORPARSING exists in
 598                      *      CLSID\\{...}\\shellfolder
 599                      * exception: the MyComputer folder has this keys not
 600                      *            but like any filesystem backed
 601                      *            folder it needs these behaviour
 602                      *
 603                      * Get the "WantsFORPARSING" flag from the registry
 604                      */
 605
 606                     lstrcpyW (szRegPath, clsidW);
 607                     SHELL32_GUIDToStringW (clsid, &szRegPath[6]);
 608                     lstrcatW (szRegPath, shellfolderW);
 609                     r = SHGetValueW (HKEY_CLASSES_ROOT, szRegPath,
 610                                      wantsForParsingW, NULL, NULL, NULL);
 611                     if (r == ERROR_SUCCESS)
 612                         bWantsForParsing = TRUE;
 613
 614                     if ((GET_SHGDN_RELATION (dwFlags) == SHGDN_NORMAL) &&
 615                         bWantsForParsing)
 616                     {
 617                         /*
 618                          * We need the filesystem path to the destination folder
 619                          * Only the folder itself can know it
 620                          */
 621                         hr = SHELL32_GetDisplayNameOfChild (iface, pidl,
 622                                                 dwFlags, szPath, MAX_PATH);
 623                     }
 624                     else
 625                     {
 626                         LPSTR p;
 627
 628                         /* parsing name like ::{...} */
 629                         p = lstrcpyA(szPath, "::") + 2;
 630                         p += SHELL32_GUIDToStringA(&CLSID_MyComputer, p);
 631
 632                         lstrcatA(p, "\\::");
 633                         p += 3;
 634                         SHELL32_GUIDToStringA(clsid, p);
 635                     }
 636                 }
 637                 else
 638                 {
 639                     /* user friendly name */
 640                     HCR_GetClassNameA (clsid, szPath, MAX_PATH);
 641                 }
 642             }
 643             else
 644             {
 645                 /* append my own path */
 646                 _ILSimpleGetText (pidl, szPath, MAX_PATH);
 647             }
 648         }
 649         else if (_ILIsDrive(pidl))
 650         {
 651             _ILSimpleGetText (pidl, szPath, MAX_PATH);    /* append my own path */
 652
 653             /* long view "lw_name (C:)" */
 654             if (!(dwFlags & SHGDN_FORPARSING))
 655             {
 656                 DWORD dwVolumeSerialNumber, dwMaximumComponetLength, dwFileSystemFlags;
 657                 char szDrive[18] = "";
 658
 659                 GetVolumeInformationA (szPath, szDrive, sizeof (szDrive) - 6,
 660                            &dwVolumeSerialNumber,
 661                            &dwMaximumComponetLength, &dwFileSystemFlags, NULL, 0);
 662                 strcat (szDrive, " (");
 663                 strncat (szDrive, szPath, 2);
 664                 strcat (szDrive, ")");
 665                 strcpy (szPath, szDrive);
 666             }
 667         }
 668         else
 669         {
 670             /* Neither a shell namespace extension nor a drive letter. */
 671             ERR("Wrong pidl type\n");
 672             return E_INVALIDARG;
 673         }
 674     }
 675     else
 676     {
 677         /* Complex pidl. Let the child folder do the work */
 678         strRet->uType = STRRET_CSTR;
 679         hr = SHELL32_GetDisplayNameOfChild(iface, pidl, dwFlags, szPath, MAX_PATH);
 680     }
 681
 682     if (SUCCEEDED (hr))
 683     {
 684         strRet->uType = STRRET_CSTR;
 685         lstrcpynA (strRet->u.cStr, szPath, MAX_PATH);
 686     }
 687
 688     TRACE ("-- (%p)->(%s)\n", This, szPath);
 689     return hr;
 690 }
 691
 692 /**************************************************************************
 693 *  ISF_MyComputer_fnSetNameOf
 694 *  Changes the name of a file object or subfolder, possibly changing its item
 695 *  identifier in the process.
 696 *
 697 * PARAMETERS
 698 *  hwndOwner  [in]   Owner window for output
 699 *  pidl       [in]   simple pidl of item to change
 700 *  lpszName   [in]   the items new display name
 701 *  dwFlags    [in]   SHGNO formatting flags
 702 *  ppidlOut   [out]  simple pidl returned
 703 */
 704 static HRESULT WINAPI ISF_MyComputer_fnSetNameOf (
 705                IShellFolder2 * iface, HWND hwndOwner, LPCITEMIDLIST pidl,
 706                LPCOLESTR lpName, DWORD dwFlags, LPITEMIDLIST * pPidlOut)
 707 {
 708     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 709     FIXME ("(%p)->(%p,pidl=%p,%s,%lu,%p)\n", This,
 710            hwndOwner, pidl, debugstr_w (lpName), dwFlags, pPidlOut);
 711     return E_FAIL;
 712 }
 713
 714 static HRESULT WINAPI ISF_MyComputer_fnGetDefaultSearchGUID (
 715                IShellFolder2 * iface, GUID * pguid)
 716 {
 717     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 718     FIXME ("(%p)\n", This);
 719     return E_NOTIMPL;
 720 }
 721 static HRESULT WINAPI ISF_MyComputer_fnEnumSearches (
 722                IShellFolder2 * iface, IEnumExtraSearch ** ppenum)
 723 {
 724     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 725     FIXME ("(%p)\n", This);
 726     return E_NOTIMPL;
 727 }
 728 static HRESULT WINAPI ISF_MyComputer_fnGetDefaultColumn (
 729                IShellFolder2 *iface, DWORD dwRes, ULONG *pSort, ULONG *pDisplay)
 730 {
 731     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 732
 733     TRACE ("(%p)\n", This);
 734
 735     if (pSort)
 736          *pSort = 0;
 737     if (pDisplay)
 738         *pDisplay = 0;
 739     return S_OK;
 740 }
 741 static HRESULT WINAPI ISF_MyComputer_fnGetDefaultColumnState (
 742                IShellFolder2 * iface, UINT iColumn, DWORD * pcsFlags)
 743 {
 744     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 745
 746     TRACE ("(%p)\n", This);
 747
 748     if (!pcsFlags || iColumn >= MYCOMPUTERSHELLVIEWCOLUMNS)
 749         return E_INVALIDARG;
 750     *pcsFlags = MyComputerSFHeader[iColumn].pcsFlags;
 751     return S_OK;
 752 }
 753
 754 static HRESULT WINAPI ISF_MyComputer_fnGetDetailsEx (IShellFolder2 * iface,
 755                LPCITEMIDLIST pidl, const SHCOLUMNID * pscid, VARIANT * pv)
 756 {
 757     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 758     FIXME ("(%p)\n", This);
 759     return E_NOTIMPL;
 760 }
 761
 762 /* FIXME: drive size >4GB is rolling over */
 763 static HRESULT WINAPI ISF_MyComputer_fnGetDetailsOf (IShellFolder2 * iface,
 764                LPCITEMIDLIST pidl, UINT iColumn, SHELLDETAILS * psd)
 765 {
 766     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 767     HRESULT hr;
 768
 769     TRACE ("(%p)->(%p %i %p)\n", This, pidl, iColumn, psd);
 770
 771     if (!psd || iColumn >= MYCOMPUTERSHELLVIEWCOLUMNS)
 772         return E_INVALIDARG;
 773
 774     if (!pidl)
 775     {
 776         psd->fmt = MyComputerSFHeader[iColumn].fmt;
 777         psd->cxChar = MyComputerSFHeader[iColumn].cxChar;
 778         psd->str.uType = STRRET_CSTR;
 779         LoadStringA (shell32_hInstance, MyComputerSFHeader[iColumn].colnameid,
 780                      psd->str.u.cStr, MAX_PATH);
 781         return S_OK;
 782     }
 783     else
 784     {
 785         char szPath[MAX_PATH];
 786         ULARGE_INTEGER ulBytes;
 787
 788         psd->str.u.cStr[0] = 0x00;
 789         psd->str.uType = STRRET_CSTR;
 790         switch (iColumn)
 791         {
 792         case 0:        /* name */
 793             hr = IShellFolder_GetDisplayNameOf (iface, pidl,
 794                        SHGDN_NORMAL | SHGDN_INFOLDER, &psd->str);
 795             break;
 796         case 1:        /* type */
 797             _ILGetFileType (pidl, psd->str.u.cStr, MAX_PATH);
 798             break;
 799         case 2:        /* total size */
 800             if (_ILIsDrive (pidl))
 801             {
 802                 _ILSimpleGetText (pidl, szPath, MAX_PATH);
 803                 GetDiskFreeSpaceExA (szPath, NULL, &ulBytes, NULL);
 804                 StrFormatByteSizeA (ulBytes.u.LowPart, psd->str.u.cStr, MAX_PATH);
 805             }
 806             break;
 807         case 3:        /* free size */
 808             if (_ILIsDrive (pidl))
 809             {
 810                 _ILSimpleGetText (pidl, szPath, MAX_PATH);
 811                 GetDiskFreeSpaceExA (szPath, &ulBytes, NULL, NULL);
 812                 StrFormatByteSizeA (ulBytes.u.LowPart, psd->str.u.cStr, MAX_PATH);
 813             }
 814             break;
 815         }
 816         hr = S_OK;
 817     }
 818
 819     return hr;
 820 }
 821
 822 static HRESULT WINAPI ISF_MyComputer_fnMapColumnToSCID (
 823                IShellFolder2 * iface, UINT column, SHCOLUMNID * pscid)
 824 {
 825     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 826     FIXME ("(%p)\n", This);
 827     return E_NOTIMPL;
 828 }
 829
 830 static const IShellFolder2Vtbl vt_ShellFolder2 =
 831 {
 832     ISF_MyComputer_fnQueryInterface,
 833     ISF_MyComputer_fnAddRef,
 834     ISF_MyComputer_fnRelease,
 835     ISF_MyComputer_fnParseDisplayName,
 836     ISF_MyComputer_fnEnumObjects,
 837     ISF_MyComputer_fnBindToObject,
 838     ISF_MyComputer_fnBindToStorage,
 839     ISF_MyComputer_fnCompareIDs,
 840     ISF_MyComputer_fnCreateViewObject,
 841     ISF_MyComputer_fnGetAttributesOf,
 842     ISF_MyComputer_fnGetUIObjectOf,
 843     ISF_MyComputer_fnGetDisplayNameOf,
 844     ISF_MyComputer_fnSetNameOf,
 845     /* ShellFolder2 */
 846     ISF_MyComputer_fnGetDefaultSearchGUID,
 847     ISF_MyComputer_fnEnumSearches,
 848     ISF_MyComputer_fnGetDefaultColumn,
 849     ISF_MyComputer_fnGetDefaultColumnState,
 850     ISF_MyComputer_fnGetDetailsEx,
 851     ISF_MyComputer_fnGetDetailsOf,
 852     ISF_MyComputer_fnMapColumnToSCID
 853 };
 854
 855 /************************************************************************
 856  *    IMCFldr_PersistFolder2_QueryInterface
 857  */
 858 static HRESULT WINAPI IMCFldr_PersistFolder2_QueryInterface (
 859                IPersistFolder2 * iface, REFIID iid, LPVOID * ppvObj)
 860 {
 861     IGenericSFImpl *This = impl_from_IPersistFolder2(iface);
 862
 863     TRACE ("(%p)\n", This);
 864
 865     return IUnknown_QueryInterface (_IUnknown_ (This), iid, ppvObj);
 866 }
 867
 868 /************************************************************************
 869  *    IMCFldr_PersistFolder2_AddRef
 870  */
 871 static ULONG WINAPI IMCFldr_PersistFolder2_AddRef (IPersistFolder2 * iface)
 872 {
 873     IGenericSFImpl *This = impl_from_IPersistFolder2(iface);
 874
 875     TRACE ("(%p)->(count=%lu)\n", This, This->ref);
 876
 877     return IUnknown_AddRef (_IUnknown_ (This));
 878 }
 879
 880 /************************************************************************
 881  *    ISFPersistFolder_Release
 882  */
 883 static ULONG WINAPI IMCFldr_PersistFolder2_Release (IPersistFolder2 * iface)
 884 {
 885     IGenericSFImpl *This = impl_from_IPersistFolder2(iface);
 886
 887     TRACE ("(%p)->(count=%lu)\n", This, This->ref);
 888
 889     return IUnknown_Release (_IUnknown_ (This));
 890 }
 891
 892 /************************************************************************
 893  *    IMCFldr_PersistFolder2_GetClassID
 894  */
 895 static HRESULT WINAPI IMCFldr_PersistFolder2_GetClassID (
 896                IPersistFolder2 * iface, CLSID * lpClassId)
 897 {
 898     IGenericSFImpl *This = impl_from_IPersistFolder2(iface);
 899
 900     TRACE ("(%p)\n", This);
 901
 902     if (!lpClassId)
 903     return E_POINTER;
 904     *lpClassId = CLSID_MyComputer;
 905
 906     return S_OK;
 907 }
 908
 909 /************************************************************************
 910  *    IMCFldr_PersistFolder2_Initialize
 911  *
 912  * NOTES: it makes no sense to change the pidl
 913  */
 914 static HRESULT WINAPI IMCFldr_PersistFolder2_Initialize (
 915                IPersistFolder2 * iface, LPCITEMIDLIST pidl)
 916 {
 917     IGenericSFImpl *This = impl_from_IPersistFolder2(iface);
 918     TRACE ("(%p)->(%p)\n", This, pidl);
 919     return E_NOTIMPL;
 920 }
 921
 922 /**************************************************************************
 923  *    IPersistFolder2_fnGetCurFolder
 924  */
 925 static HRESULT WINAPI IMCFldr_PersistFolder2_GetCurFolder (
 926                IPersistFolder2 * iface, LPITEMIDLIST * pidl)
 927 {
 928     IGenericSFImpl *This = impl_from_IPersistFolder2(iface);
 929
 930     TRACE ("(%p)->(%p)\n", This, pidl);
 931
 932     if (!pidl)
 933         return E_POINTER;
 934     *pidl = ILClone (This->pidlRoot);
 935     return S_OK;
 936 }
 937
 938 static const IPersistFolder2Vtbl vt_PersistFolder2 =
 939 {
 940     IMCFldr_PersistFolder2_QueryInterface,
 941     IMCFldr_PersistFolder2_AddRef,
 942     IMCFldr_PersistFolder2_Release,
 943     IMCFldr_PersistFolder2_GetClassID,
 944     IMCFldr_PersistFolder2_Initialize,
 945     IMCFldr_PersistFolder2_GetCurFolder
 946 };