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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, 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=%u)\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=%u)\n", This, refCount + 1);
 185
 186     if (!refCount)
 187     {
 188         TRACE ("-- destroying IShellFolder(%p)\n", This);
 189         SHFree (This->pidlRoot);
 190         LocalFree ((HLOCAL) This);
 191     }
 192     return refCount;
 193 }
 194
 195 /**************************************************************************
 196 *    ISF_MyComputer_fnParseDisplayName
 197 */
 198 static HRESULT WINAPI ISF_MyComputer_fnParseDisplayName (IShellFolder2 *iface,
 199                HWND hwndOwner, LPBC pbc, LPOLESTR lpszDisplayName,
 200                DWORD * pchEaten, LPITEMIDLIST * ppidl, DWORD * pdwAttributes)
 201 {
 202     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 203     HRESULT hr = E_INVALIDARG;
 204     LPCWSTR szNext = NULL;
 205     WCHAR szElement[MAX_PATH];
 206     LPITEMIDLIST pidlTemp = NULL;
 207     CLSID clsid;
 208
 209     TRACE("(%p)->(HWND=%p,%p,%p=%s,%p,pidl=%p,%p)\n", This,
 210           hwndOwner, pbc, lpszDisplayName, debugstr_w (lpszDisplayName),
 211           pchEaten, ppidl, pdwAttributes);
 212
 213     *ppidl = 0;
 214     if (pchEaten)
 215         *pchEaten = 0;        /* strange but like the original */
 216
 217     /* handle CLSID paths */
 218     if (lpszDisplayName[0] == ':' && lpszDisplayName[1] == ':')
 219     {
 220         szNext = GetNextElementW (lpszDisplayName, szElement, MAX_PATH);
 221         TRACE ("-- element: %s\n", debugstr_w (szElement));
 222         SHCLSIDFromStringW (szElement + 2, &clsid);
 223         pidlTemp = _ILCreateGuid (PT_GUID, &clsid);
 224     }
 225     /* do we have an absolute path name ? */
 226     else if (PathGetDriveNumberW (lpszDisplayName) >= 0 &&
 227               lpszDisplayName[2] == (WCHAR) '\\')
 228     {
 229         szNext = GetNextElementW (lpszDisplayName, szElement, MAX_PATH);
 230         /* make drive letter uppercase to enable PIDL comparison */
 231         szElement[0] = toupper(szElement[0]);
 232         pidlTemp = _ILCreateDrive (szElement);
 233     }
 234
 235     if (szNext && *szNext)
 236     {
 237         hr = SHELL32_ParseNextElement (iface, hwndOwner, pbc, &pidlTemp,
 238                               (LPOLESTR) szNext, pchEaten, pdwAttributes);
 239     }
 240     else
 241     {
 242         if (pdwAttributes && *pdwAttributes)
 243             SHELL32_GetItemAttributes (_IShellFolder_ (This),
 244                                        pidlTemp, pdwAttributes);
 245         hr = S_OK;
 246     }
 247
 248     *ppidl = pidlTemp;
 249
 250     TRACE ("(%p)->(-- ret=0x%08x)\n", This, hr);
 251
 252     return hr;
 253 }
 254
 255 /**************************************************************************
 256  *  CreateMyCompEnumList()
 257  */
 258 static const WCHAR MyComputer_NameSpaceW[] = { 'S','O','F','T','W','A','R','E',
 259  '\\','M','i','c','r','o','s','o','f','t','\\','W','i','n','d','o','w','s','\\',
 260  'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\','E','x','p','l',
 261  'o','r','e','r','\\','M','y','C','o','m','p','u','t','e','r','\\','N','a','m',
 262  'e','s','p','a','c','e','\0' };
 263
 264 static BOOL CreateMyCompEnumList(IEnumIDList *list, DWORD dwFlags)
 265 {
 266     BOOL ret = TRUE;
 267
 268     TRACE("(%p)->(flags=0x%08x)\n", list, dwFlags);
 269
 270     /* enumerate the folders */
 271     if (dwFlags & SHCONTF_FOLDERS)
 272     {
 273         WCHAR wszDriveName[] = {'A', ':', '\\', '\0'};
 274         DWORD dwDrivemap = GetLogicalDrives();
 275         HKEY hkey;
 276         UINT i;
 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         for (i=0; i<2; i++) {
 288             if (ret && !RegOpenKeyExW(i == 0 ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER,
 289                                       MyComputer_NameSpaceW, 0, KEY_READ, &hkey))
 290             {
 291                 WCHAR iid[50];
 292                 int i=0;
 293
 294                 while (ret)
 295                 {
 296                     DWORD size;
 297                     LONG r;
 298
 299                     size = sizeof(iid) / sizeof(iid[0]);
 300                     r = RegEnumKeyExW(hkey, i, iid, &size, 0, NULL, NULL, NULL);
 301                     if (ERROR_SUCCESS == r)
 302                     {
 303                         /* FIXME: shell extensions, shouldn't the type be
 304                          * PT_SHELLEXT? */
 305                         ret = AddToEnumList(list, _ILCreateGuidFromStrW(iid));
 306                         i++;
 307                     }
 308                     else if (ERROR_NO_MORE_ITEMS == r)
 309                         break;
 310                     else
 311                         ret = FALSE;
 312                 }
 313                 RegCloseKey(hkey);
 314             }
 315         }
 316     }
 317     return ret;
 318 }
 319
 320 /**************************************************************************
 321 *        ISF_MyComputer_fnEnumObjects
 322 */
 323 static HRESULT WINAPI ISF_MyComputer_fnEnumObjects (IShellFolder2 *iface,
 324                HWND hwndOwner, DWORD dwFlags, LPENUMIDLIST *ppEnumIDList)
 325 {
 326     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 327
 328     TRACE("(%p)->(HWND=%p flags=0x%08x pplist=%p)\n", This,
 329           hwndOwner, dwFlags, ppEnumIDList);
 330
 331     *ppEnumIDList = IEnumIDList_Constructor();
 332     if (*ppEnumIDList)
 333         CreateMyCompEnumList(*ppEnumIDList, dwFlags);
 334
 335     TRACE ("-- (%p)->(new ID List: %p)\n", This, *ppEnumIDList);
 336
 337     return (*ppEnumIDList) ? S_OK : E_OUTOFMEMORY;
 338 }
 339
 340 /**************************************************************************
 341 *        ISF_MyComputer_fnBindToObject
 342 */
 343 static HRESULT WINAPI ISF_MyComputer_fnBindToObject (IShellFolder2 *iface,
 344                LPCITEMIDLIST pidl, LPBC pbcReserved, REFIID riid, LPVOID *ppvOut)
 345 {
 346     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 347
 348     TRACE("(%p)->(pidl=%p,%p,%s,%p)\n", This,
 349           pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 350
 351     return SHELL32_BindToChild (This->pidlRoot, NULL, pidl, riid, ppvOut);
 352 }
 353
 354 /**************************************************************************
 355 *    ISF_MyComputer_fnBindToStorage
 356 */
 357 static HRESULT WINAPI ISF_MyComputer_fnBindToStorage (IShellFolder2 * iface,
 358                LPCITEMIDLIST pidl, LPBC pbcReserved, REFIID riid, LPVOID *ppvOut)
 359 {
 360     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 361
 362     FIXME("(%p)->(pidl=%p,%p,%s,%p) stub\n", This,
 363           pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 364
 365     *ppvOut = NULL;
 366     return E_NOTIMPL;
 367 }
 368
 369 /**************************************************************************
 370 *     ISF_MyComputer_fnCompareIDs
 371 */
 372
 373 static HRESULT WINAPI ISF_MyComputer_fnCompareIDs (IShellFolder2 *iface,
 374                LPARAM lParam, LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 375 {
 376     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 377     int nReturn;
 378
 379     TRACE ("(%p)->(0x%08lx,pidl1=%p,pidl2=%p)\n", This, lParam, pidl1, pidl2);
 380     nReturn = SHELL32_CompareIDs (_IShellFolder_ (This), lParam, pidl1, pidl2);
 381     TRACE ("-- %i\n", nReturn);
 382     return nReturn;
 383 }
 384
 385 /**************************************************************************
 386 *    ISF_MyComputer_fnCreateViewObject
 387 */
 388 static HRESULT WINAPI ISF_MyComputer_fnCreateViewObject (IShellFolder2 *iface,
 389                HWND hwndOwner, REFIID riid, LPVOID * ppvOut)
 390 {
 391     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 392     LPSHELLVIEW pShellView;
 393     HRESULT hr = E_INVALIDARG;
 394
 395     TRACE("(%p)->(hwnd=%p,%s,%p)\n", This,
 396           hwndOwner, shdebugstr_guid (riid), ppvOut);
 397
 398     if (!ppvOut)
 399         return hr;
 400
 401     *ppvOut = NULL;
 402
 403     if (IsEqualIID (riid, &IID_IDropTarget))
 404     {
 405         WARN ("IDropTarget not implemented\n");
 406         hr = E_NOTIMPL;
 407     }
 408     else if (IsEqualIID (riid, &IID_IContextMenu))
 409     {
 410         WARN ("IContextMenu not implemented\n");
 411         hr = E_NOTIMPL;
 412     }
 413     else if (IsEqualIID (riid, &IID_IShellView))
 414     {
 415         pShellView = IShellView_Constructor ((IShellFolder *) iface);
 416         if (pShellView)
 417         {
 418             hr = IShellView_QueryInterface (pShellView, riid, ppvOut);
 419             IShellView_Release (pShellView);
 420         }
 421     }
 422     TRACE ("-- (%p)->(interface=%p)\n", This, ppvOut);
 423     return hr;
 424 }
 425
 426 /**************************************************************************
 427 *  ISF_MyComputer_fnGetAttributesOf
 428 */
 429 static HRESULT WINAPI ISF_MyComputer_fnGetAttributesOf (IShellFolder2 * iface,
 430                 UINT cidl, LPCITEMIDLIST * apidl, DWORD * rgfInOut)
 431 {
 432     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 433     HRESULT hr = S_OK;
 434
 435     TRACE ("(%p)->(cidl=%d apidl=%p mask=%p (0x%08x))\n",
 436            This, cidl, apidl, rgfInOut, rgfInOut ? *rgfInOut : 0);
 437
 438     if (!rgfInOut)
 439         return E_INVALIDARG;
 440     if (cidl && !apidl)
 441         return E_INVALIDARG;
 442
 443     if (*rgfInOut == 0)
 444         *rgfInOut = ~0;
 445
 446     if(cidl == 0){
 447         IShellFolder *psfParent = NULL;
 448         LPCITEMIDLIST rpidl = NULL;
 449
 450         hr = SHBindToParent(This->pidlRoot, &IID_IShellFolder, (LPVOID*)&psfParent, &rpidl);
 451         if(SUCCEEDED(hr)) {
 452             SHELL32_GetItemAttributes (psfParent, rpidl, rgfInOut);
 453             IShellFolder_Release(psfParent);
 454         }
 455     } else {
 456         while (cidl > 0 && *apidl) {
 457             pdump (*apidl);
 458             SHELL32_GetItemAttributes (_IShellFolder_ (This), *apidl, rgfInOut);
 459             apidl++;
 460             cidl--;
 461         }
 462     }
 463     /* make sure SFGAO_VALIDATE is cleared, some apps depend on that */
 464     *rgfInOut &= ~SFGAO_VALIDATE;
 465
 466     TRACE ("-- result=0x%08x\n", *rgfInOut);
 467     return hr;
 468 }
 469
 470 /**************************************************************************
 471 *    ISF_MyComputer_fnGetUIObjectOf
 472 *
 473 * PARAMETERS
 474 *  hwndOwner [in]  Parent window for any output
 475 *  cidl      [in]  array size
 476 *  apidl     [in]  simple pidl array
 477 *  riid      [in]  Requested Interface
 478 *  prgfInOut [   ] reserved
 479 *  ppvObject [out] Resulting Interface
 480 *
 481 */
 482 static HRESULT WINAPI ISF_MyComputer_fnGetUIObjectOf (IShellFolder2 * iface,
 483                 HWND hwndOwner, UINT cidl, LPCITEMIDLIST * apidl, REFIID riid,
 484                 UINT * prgfInOut, LPVOID * ppvOut)
 485 {
 486     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 487
 488     LPITEMIDLIST pidl;
 489     IUnknown *pObj = NULL;
 490     HRESULT hr = E_INVALIDARG;
 491
 492     TRACE("(%p)->(%p,%u,apidl=%p,%s,%p,%p)\n", This,
 493           hwndOwner, cidl, apidl, shdebugstr_guid (riid), prgfInOut, ppvOut);
 494
 495     if (!ppvOut)
 496         return hr;
 497
 498     *ppvOut = NULL;
 499
 500     if (IsEqualIID (riid, &IID_IContextMenu) && (cidl >= 1))
 501     {
 502         pObj = (LPUNKNOWN) ISvItemCm_Constructor ((IShellFolder *) iface,
 503                                               This->pidlRoot, apidl, cidl);
 504         hr = S_OK;
 505     }
 506     else if (IsEqualIID (riid, &IID_IDataObject) && (cidl >= 1))
 507     {
 508         pObj = (LPUNKNOWN) IDataObject_Constructor (hwndOwner,
 509                                               This->pidlRoot, apidl, cidl);
 510         hr = S_OK;
 511     }
 512     else if (IsEqualIID (riid, &IID_IExtractIconA) && (cidl == 1))
 513     {
 514         pidl = ILCombine (This->pidlRoot, apidl[0]);
 515         pObj = (LPUNKNOWN) IExtractIconA_Constructor (pidl);
 516         SHFree (pidl);
 517         hr = S_OK;
 518     }
 519     else if (IsEqualIID (riid, &IID_IExtractIconW) && (cidl == 1))
 520     {
 521         pidl = ILCombine (This->pidlRoot, apidl[0]);
 522         pObj = (LPUNKNOWN) IExtractIconW_Constructor (pidl);
 523         SHFree (pidl);
 524         hr = S_OK;
 525     }
 526     else if (IsEqualIID (riid, &IID_IDropTarget) && (cidl >= 1))
 527     {
 528         hr = IShellFolder_QueryInterface (iface, &IID_IDropTarget,
 529                                           (LPVOID *) &pObj);
 530     }
 531     else if ((IsEqualIID(riid,&IID_IShellLinkW) ||
 532               IsEqualIID(riid,&IID_IShellLinkA)) && (cidl == 1))
 533     {
 534         pidl = ILCombine (This->pidlRoot, apidl[0]);
 535         hr = IShellLink_ConstructFromFile(NULL, riid, pidl, (LPVOID*) &pObj);
 536         SHFree (pidl);
 537     }
 538     else
 539         hr = E_NOINTERFACE;
 540
 541     if (SUCCEEDED(hr) && !pObj)
 542         hr = E_OUTOFMEMORY;
 543
 544     *ppvOut = pObj;
 545     TRACE ("(%p)->hr=0x%08x\n", This, hr);
 546     return hr;
 547 }
 548
 549 /**************************************************************************
 550 *    ISF_MyComputer_fnGetDisplayNameOf
 551 */
 552 static HRESULT WINAPI ISF_MyComputer_fnGetDisplayNameOf (IShellFolder2 *iface,
 553                LPCITEMIDLIST pidl, DWORD dwFlags, LPSTRRET strRet)
 554 {
 555     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 556
 557     LPWSTR pszPath;
 558     HRESULT hr = S_OK;
 559
 560     TRACE ("(%p)->(pidl=%p,0x%08x,%p)\n", This, pidl, dwFlags, strRet);
 561     pdump (pidl);
 562
 563     if (!strRet)
 564         return E_INVALIDARG;
 565
 566     pszPath = CoTaskMemAlloc((MAX_PATH +1) * sizeof(WCHAR));
 567     if (!pszPath)
 568         return E_OUTOFMEMORY;
 569
 570     pszPath[0] = 0;
 571
 572     if (!pidl->mkid.cb)
 573     {
 574         /* parsing name like ::{...} */
 575         pszPath[0] = ':';
 576         pszPath[1] = ':';
 577         SHELL32_GUIDToStringW(&CLSID_MyComputer, &pszPath[2]);
 578     }
 579     else if (_ILIsPidlSimple(pidl))
 580     {
 581         /* take names of special folders only if its only this folder */
 582         if (_ILIsSpecialFolder(pidl))
 583         {
 584             GUID const *clsid;
 585
 586             clsid = _ILGetGUIDPointer (pidl);
 587             if (clsid)
 588             {
 589                 if (GET_SHGDN_FOR (dwFlags) & SHGDN_FORPARSING)
 590                 {
 591                     static const WCHAR clsidW[] =
 592                      { 'C','L','S','I','D','\\',0 };
 593                     static const WCHAR shellfolderW[] =
 594                      { '\\','s','h','e','l','l','f','o','l','d','e','r',0 };
 595                     static const WCHAR wantsForParsingW[] =
 596                      { 'W','a','n','t','s','F','o','r','P','a','r','s','i','n',
 597                      'g',0 };
 598                     int bWantsForParsing = FALSE;
 599                     WCHAR szRegPath[100];
 600                     LONG r;
 601
 602                     /*
 603                      * We can only get a filesystem path from a shellfolder
 604                      * if the value WantsFORPARSING exists in
 605                      *      CLSID\\{...}\\shellfolder
 606                      * exception: the MyComputer folder has this keys not
 607                      *            but like any filesystem backed
 608                      *            folder it needs these behaviour
 609                      *
 610                      * Get the "WantsFORPARSING" flag from the registry
 611                      */
 612
 613                     lstrcpyW (szRegPath, clsidW);
 614                     SHELL32_GUIDToStringW (clsid, &szRegPath[6]);
 615                     lstrcatW (szRegPath, shellfolderW);
 616                     r = SHGetValueW (HKEY_CLASSES_ROOT, szRegPath,
 617                                      wantsForParsingW, NULL, NULL, NULL);
 618                     if (r == ERROR_SUCCESS)
 619                         bWantsForParsing = TRUE;
 620
 621                     if ((GET_SHGDN_RELATION (dwFlags) == SHGDN_NORMAL) &&
 622                         bWantsForParsing)
 623                     {
 624                         /*
 625                          * We need the filesystem path to the destination folder
 626                          * Only the folder itself can know it
 627                          */
 628                         hr = SHELL32_GetDisplayNameOfChild (iface, pidl,
 629                                                 dwFlags, pszPath, MAX_PATH);
 630                     }
 631                     else
 632                     {
 633                         LPWSTR p = pszPath;
 634
 635                         /* parsing name like ::{...} */
 636                         p[0] = ':';
 637                         p[1] = ':';
 638                         p += 2;
 639                         p += SHELL32_GUIDToStringW(&CLSID_MyComputer, p);
 640
 641                         /* \:: */
 642                         p[0] = '\\';
 643                         p[1] = ':';
 644                         p[2] = ':';
 645                         p += 3;
 646                         SHELL32_GUIDToStringW(clsid, p);
 647                     }
 648                 }
 649                 else
 650                 {
 651                     /* user friendly name */
 652                     HCR_GetClassNameW (clsid, pszPath, MAX_PATH);
 653                 }
 654             }
 655             else
 656             {
 657                 /* append my own path */
 658                 _ILSimpleGetTextW (pidl, pszPath, MAX_PATH);
 659             }
 660         }
 661         else if (_ILIsDrive(pidl))
 662         {
 663             _ILSimpleGetTextW (pidl, pszPath, MAX_PATH);    /* append my own path */
 664
 665             /* long view "lw_name (C:)" */
 666             if (!(dwFlags & SHGDN_FORPARSING))
 667             {
 668                 DWORD dwVolumeSerialNumber, dwMaximumComponetLength, dwFileSystemFlags;
 669                 WCHAR wszDrive[18] = {0};
 670                 static const WCHAR wszOpenBracket[] = {' ','(',0};
 671                 static const WCHAR wszCloseBracket[] = {')',0};
 672
 673                 GetVolumeInformationW (pszPath, wszDrive,
 674                            sizeof(wszDrive)/sizeof(wszDrive[0]) - 6,
 675                            &dwVolumeSerialNumber,
 676                            &dwMaximumComponetLength, &dwFileSystemFlags, NULL, 0);
 677                 strcatW (wszDrive, wszOpenBracket);
 678                 lstrcpynW (wszDrive + strlenW(wszDrive), pszPath, 3);
 679                 strcatW (wszDrive, wszCloseBracket);
 680                 strcpyW (pszPath, wszDrive);
 681             }
 682         }
 683         else
 684         {
 685             /* Neither a shell namespace extension nor a drive letter. */
 686             ERR("Wrong pidl type\n");
 687             CoTaskMemFree(pszPath);
 688             return E_INVALIDARG;
 689         }
 690     }
 691     else
 692     {
 693         /* Complex pidl. Let the child folder do the work */
 694         hr = SHELL32_GetDisplayNameOfChild(iface, pidl, dwFlags, pszPath, MAX_PATH);
 695     }
 696
 697     if (SUCCEEDED (hr))
 698     {
 699         /* Win9x always returns ANSI strings, NT always returns Unicode strings */
 700         if (GetVersion() & 0x80000000)
 701         {
 702             strRet->uType = STRRET_CSTR;
 703             if (!WideCharToMultiByte(CP_ACP, 0, pszPath, -1, strRet->u.cStr, MAX_PATH,
 704                     NULL, NULL))
 705                 strRet->u.cStr[0] = '\0';
 706             CoTaskMemFree(pszPath);
 707         }
 708         else
 709         {
 710             strRet->uType = STRRET_WSTR;
 711             strRet->u.pOleStr = pszPath;
 712         }
 713     }
 714     else
 715         CoTaskMemFree(pszPath);
 716
 717     TRACE ("-- (%p)->(%s)\n", This, strRet->uType == STRRET_CSTR ? strRet->u.cStr : debugstr_w(strRet->u.pOleStr));
 718     return hr;
 719 }
 720
 721 /**************************************************************************
 722 *  ISF_MyComputer_fnSetNameOf
 723 *  Changes the name of a file object or subfolder, possibly changing its item
 724 *  identifier in the process.
 725 *
 726 * PARAMETERS
 727 *  hwndOwner  [in]   Owner window for output
 728 *  pidl       [in]   simple pidl of item to change
 729 *  lpszName   [in]   the items new display name
 730 *  dwFlags    [in]   SHGNO formatting flags
 731 *  ppidlOut   [out]  simple pidl returned
 732 */
 733 static HRESULT WINAPI ISF_MyComputer_fnSetNameOf (
 734                IShellFolder2 * iface, HWND hwndOwner, LPCITEMIDLIST pidl,
 735                LPCOLESTR lpName, DWORD dwFlags, LPITEMIDLIST * pPidlOut)
 736 {
 737     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 738     FIXME ("(%p)->(%p,pidl=%p,%s,%u,%p)\n", This,
 739            hwndOwner, pidl, debugstr_w (lpName), dwFlags, pPidlOut);
 740     return E_FAIL;
 741 }
 742
 743 static HRESULT WINAPI ISF_MyComputer_fnGetDefaultSearchGUID (
 744                IShellFolder2 * iface, GUID * pguid)
 745 {
 746     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 747     FIXME ("(%p)\n", This);
 748     return E_NOTIMPL;
 749 }
 750 static HRESULT WINAPI ISF_MyComputer_fnEnumSearches (
 751                IShellFolder2 * iface, IEnumExtraSearch ** ppenum)
 752 {
 753     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 754     FIXME ("(%p)\n", This);
 755     return E_NOTIMPL;
 756 }
 757 static HRESULT WINAPI ISF_MyComputer_fnGetDefaultColumn (
 758                IShellFolder2 *iface, DWORD dwRes, ULONG *pSort, ULONG *pDisplay)
 759 {
 760     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 761
 762     TRACE ("(%p)\n", This);
 763
 764     if (pSort)
 765          *pSort = 0;
 766     if (pDisplay)
 767         *pDisplay = 0;
 768     return S_OK;
 769 }
 770 static HRESULT WINAPI ISF_MyComputer_fnGetDefaultColumnState (
 771                IShellFolder2 * iface, UINT iColumn, DWORD * pcsFlags)
 772 {
 773     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 774
 775     TRACE ("(%p)\n", This);
 776
 777     if (!pcsFlags || iColumn >= MYCOMPUTERSHELLVIEWCOLUMNS)
 778         return E_INVALIDARG;
 779     *pcsFlags = MyComputerSFHeader[iColumn].pcsFlags;
 780     return S_OK;
 781 }
 782
 783 static HRESULT WINAPI ISF_MyComputer_fnGetDetailsEx (IShellFolder2 * iface,
 784                LPCITEMIDLIST pidl, const SHCOLUMNID * pscid, VARIANT * pv)
 785 {
 786     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 787     FIXME ("(%p)\n", This);
 788     return E_NOTIMPL;
 789 }
 790
 791 /* FIXME: drive size >4GB is rolling over */
 792 static HRESULT WINAPI ISF_MyComputer_fnGetDetailsOf (IShellFolder2 * iface,
 793                LPCITEMIDLIST pidl, UINT iColumn, SHELLDETAILS * psd)
 794 {
 795     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 796     HRESULT hr;
 797
 798     TRACE ("(%p)->(%p %i %p)\n", This, pidl, iColumn, psd);
 799
 800     if (!psd || iColumn >= MYCOMPUTERSHELLVIEWCOLUMNS)
 801         return E_INVALIDARG;
 802
 803     if (!pidl)
 804     {
 805         psd->fmt = MyComputerSFHeader[iColumn].fmt;
 806         psd->cxChar = MyComputerSFHeader[iColumn].cxChar;
 807         psd->str.uType = STRRET_CSTR;
 808         LoadStringA (shell32_hInstance, MyComputerSFHeader[iColumn].colnameid,
 809                      psd->str.u.cStr, MAX_PATH);
 810         return S_OK;
 811     }
 812     else
 813     {
 814         char szPath[MAX_PATH];
 815         ULARGE_INTEGER ulBytes;
 816
 817         psd->str.u.cStr[0] = 0x00;
 818         psd->str.uType = STRRET_CSTR;
 819         switch (iColumn)
 820         {
 821         case 0:        /* name */
 822             hr = IShellFolder_GetDisplayNameOf (iface, pidl,
 823                        SHGDN_NORMAL | SHGDN_INFOLDER, &psd->str);
 824             break;
 825         case 1:        /* type */
 826             _ILGetFileType (pidl, psd->str.u.cStr, MAX_PATH);
 827             break;
 828         case 2:        /* total size */
 829             if (_ILIsDrive (pidl))
 830             {
 831                 _ILSimpleGetText (pidl, szPath, MAX_PATH);
 832                 GetDiskFreeSpaceExA (szPath, NULL, &ulBytes, NULL);
 833                 StrFormatByteSizeA (ulBytes.u.LowPart, psd->str.u.cStr, MAX_PATH);
 834             }
 835             break;
 836         case 3:        /* free size */
 837             if (_ILIsDrive (pidl))
 838             {
 839                 _ILSimpleGetText (pidl, szPath, MAX_PATH);
 840                 GetDiskFreeSpaceExA (szPath, &ulBytes, NULL, NULL);
 841                 StrFormatByteSizeA (ulBytes.u.LowPart, psd->str.u.cStr, MAX_PATH);
 842             }
 843             break;
 844         }
 845         hr = S_OK;
 846     }
 847
 848     return hr;
 849 }
 850
 851 static HRESULT WINAPI ISF_MyComputer_fnMapColumnToSCID (
 852                IShellFolder2 * iface, UINT column, SHCOLUMNID * pscid)
 853 {
 854     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 855     FIXME ("(%p)\n", This);
 856     return E_NOTIMPL;
 857 }
 858
 859 static const IShellFolder2Vtbl vt_ShellFolder2 =
 860 {
 861     ISF_MyComputer_fnQueryInterface,
 862     ISF_MyComputer_fnAddRef,
 863     ISF_MyComputer_fnRelease,
 864     ISF_MyComputer_fnParseDisplayName,
 865     ISF_MyComputer_fnEnumObjects,
 866     ISF_MyComputer_fnBindToObject,
 867     ISF_MyComputer_fnBindToStorage,
 868     ISF_MyComputer_fnCompareIDs,
 869     ISF_MyComputer_fnCreateViewObject,
 870     ISF_MyComputer_fnGetAttributesOf,
 871     ISF_MyComputer_fnGetUIObjectOf,
 872     ISF_MyComputer_fnGetDisplayNameOf,
 873     ISF_MyComputer_fnSetNameOf,
 874     /* ShellFolder2 */
 875     ISF_MyComputer_fnGetDefaultSearchGUID,
 876     ISF_MyComputer_fnEnumSearches,
 877     ISF_MyComputer_fnGetDefaultColumn,
 878     ISF_MyComputer_fnGetDefaultColumnState,
 879     ISF_MyComputer_fnGetDetailsEx,
 880     ISF_MyComputer_fnGetDetailsOf,
 881     ISF_MyComputer_fnMapColumnToSCID
 882 };
 883
 884 /************************************************************************
 885  *    IMCFldr_PersistFolder2_QueryInterface
 886  */
 887 static HRESULT WINAPI IMCFldr_PersistFolder2_QueryInterface (
 888                IPersistFolder2 * iface, REFIID iid, LPVOID * ppvObj)
 889 {
 890     IGenericSFImpl *This = impl_from_IPersistFolder2(iface);
 891
 892     TRACE ("(%p)\n", This);
 893
 894     return IUnknown_QueryInterface (_IUnknown_ (This), iid, ppvObj);
 895 }
 896
 897 /************************************************************************
 898  *    IMCFldr_PersistFolder2_AddRef
 899  */
 900 static ULONG WINAPI IMCFldr_PersistFolder2_AddRef (IPersistFolder2 * iface)
 901 {
 902     IGenericSFImpl *This = impl_from_IPersistFolder2(iface);
 903
 904     TRACE ("(%p)->(count=%u)\n", This, This->ref);
 905
 906     return IUnknown_AddRef (_IUnknown_ (This));
 907 }
 908
 909 /************************************************************************
 910  *    ISFPersistFolder_Release
 911  */
 912 static ULONG WINAPI IMCFldr_PersistFolder2_Release (IPersistFolder2 * iface)
 913 {
 914     IGenericSFImpl *This = impl_from_IPersistFolder2(iface);
 915
 916     TRACE ("(%p)->(count=%u)\n", This, This->ref);
 917
 918     return IUnknown_Release (_IUnknown_ (This));
 919 }
 920
 921 /************************************************************************
 922  *    IMCFldr_PersistFolder2_GetClassID
 923  */
 924 static HRESULT WINAPI IMCFldr_PersistFolder2_GetClassID (
 925                IPersistFolder2 * iface, CLSID * lpClassId)
 926 {
 927     IGenericSFImpl *This = impl_from_IPersistFolder2(iface);
 928
 929     TRACE ("(%p)\n", This);
 930
 931     if (!lpClassId)
 932     return E_POINTER;
 933     *lpClassId = CLSID_MyComputer;
 934
 935     return S_OK;
 936 }
 937
 938 /************************************************************************
 939  *    IMCFldr_PersistFolder2_Initialize
 940  *
 941  * NOTES: it makes no sense to change the pidl
 942  */
 943 static HRESULT WINAPI IMCFldr_PersistFolder2_Initialize (
 944                IPersistFolder2 * iface, LPCITEMIDLIST pidl)
 945 {
 946     IGenericSFImpl *This = impl_from_IPersistFolder2(iface);
 947     TRACE ("(%p)->(%p)\n", This, pidl);
 948     return E_NOTIMPL;
 949 }
 950
 951 /**************************************************************************
 952  *    IPersistFolder2_fnGetCurFolder
 953  */
 954 static HRESULT WINAPI IMCFldr_PersistFolder2_GetCurFolder (
 955                IPersistFolder2 * iface, LPITEMIDLIST * pidl)
 956 {
 957     IGenericSFImpl *This = impl_from_IPersistFolder2(iface);
 958
 959     TRACE ("(%p)->(%p)\n", This, pidl);
 960
 961     if (!pidl)
 962         return E_POINTER;
 963     *pidl = ILClone (This->pidlRoot);
 964     return S_OK;
 965 }
 966
 967 static const IPersistFolder2Vtbl vt_PersistFolder2 =
 968 {
 969     IMCFldr_PersistFolder2_QueryInterface,
 970     IMCFldr_PersistFolder2_AddRef,
 971     IMCFldr_PersistFolder2_Release,
 972     IMCFldr_PersistFolder2_GetClassID,
 973     IMCFldr_PersistFolder2_Initialize,
 974     IMCFldr_PersistFolder2_GetCurFolder
 975 };