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 } IMyComputerFolderImpl;
  65
  66 static const IShellFolder2Vtbl vt_ShellFolder2;
  67 static const IPersistFolder2Vtbl vt_PersistFolder2;
  68
  69 static inline IMyComputerFolderImpl *impl_from_IPersistFolder2( IPersistFolder2 *iface )
  70 {
  71     return (IMyComputerFolderImpl *)((char*)iface - FIELD_OFFSET(IMyComputerFolderImpl, lpVtblPersistFolder2));
  72 }
  73
  74
  75 /*
  76   converts This to an interface pointer
  77 */
  78 #define _IShellFolder_(This)    ((IShellFolder*)&(This)->lpVtbl)
  79 #define _IShellFolder2_(This)   (&(This)->lpVtbl)
  80
  81 #define _IPersist_(This)        (&(This)->lpVtblPersistFolder2)
  82 #define _IPersistFolder_(This)  (&(This)->lpVtblPersistFolder2)
  83 #define _IPersistFolder2_(This) (&(This)->lpVtblPersistFolder2)
  84
  85 /***********************************************************************
  86 *   IShellFolder [MyComputer] implementation
  87 */
  88
  89 static const shvheader mycomputer_header[] = {
  90     {IDS_SHV_COLUMN1, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 15},
  91     {IDS_SHV_COLUMN3, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 10},
  92     {IDS_SHV_COLUMN6, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 10},
  93     {IDS_SHV_COLUMN7, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 10},
  94 };
  95
  96 #define MYCOMPUTERSHELLVIEWCOLUMNS sizeof(mycomputer_header)/sizeof(shvheader)
  97
  98 /**************************************************************************
  99 *    ISF_MyComputer_Constructor
 100 */
 101 HRESULT WINAPI ISF_MyComputer_Constructor (IUnknown * pUnkOuter, REFIID riid, LPVOID * ppv)
 102 {
 103     IMyComputerFolderImpl *sf;
 104
 105     TRACE ("unkOut=%p %s\n", pUnkOuter, shdebugstr_guid (riid));
 106
 107     if (!ppv)
 108         return E_POINTER;
 109     if (pUnkOuter)
 110         return CLASS_E_NOAGGREGATION;
 111
 112     sf = LocalAlloc (LMEM_ZEROINIT, sizeof (IMyComputerFolderImpl));
 113     if (!sf)
 114         return E_OUTOFMEMORY;
 115
 116     sf->ref = 0;
 117     sf->lpVtbl = &vt_ShellFolder2;
 118     sf->lpVtblPersistFolder2 = &vt_PersistFolder2;
 119     sf->pidlRoot = _ILCreateMyComputer ();    /* my qualified pidl */
 120
 121     if (FAILED (IUnknown_QueryInterface ((IShellFolder2 *)sf, riid, ppv)))
 122     {
 123         IUnknown_Release ((IShellFolder2 *) sf);
 124         return E_NOINTERFACE;
 125     }
 126
 127     TRACE ("--(%p)\n", sf);
 128     return S_OK;
 129 }
 130
 131 /**************************************************************************
 132  *    ISF_MyComputer_fnQueryInterface
 133  *
 134  * NOTES supports not IPersist/IPersistFolder
 135  */
 136 static HRESULT WINAPI ISF_MyComputer_fnQueryInterface (IShellFolder2 *iface,
 137                REFIID riid, LPVOID *ppvObj)
 138 {
 139     IMyComputerFolderImpl *This = (IMyComputerFolderImpl *)iface;
 140
 141     TRACE ("(%p)->(%s,%p)\n", This, shdebugstr_guid (riid), ppvObj);
 142
 143     *ppvObj = NULL;
 144
 145     if (IsEqualIID (riid, &IID_IUnknown) ||
 146         IsEqualIID (riid, &IID_IShellFolder) ||
 147         IsEqualIID (riid, &IID_IShellFolder2))
 148     {
 149         *ppvObj = This;
 150     }
 151     else if (IsEqualIID (riid, &IID_IPersist) ||
 152              IsEqualIID (riid, &IID_IPersistFolder) ||
 153              IsEqualIID (riid, &IID_IPersistFolder2))
 154     {
 155         *ppvObj = _IPersistFolder2_ (This);
 156     }
 157
 158     if (*ppvObj)
 159     {
 160         IUnknown_AddRef ((IUnknown *) (*ppvObj));
 161         TRACE ("-- Interface: (%p)->(%p)\n", ppvObj, *ppvObj);
 162         return S_OK;
 163     }
 164     TRACE ("-- Interface: E_NOINTERFACE\n");
 165     return E_NOINTERFACE;
 166 }
 167
 168 static ULONG WINAPI ISF_MyComputer_fnAddRef (IShellFolder2 * iface)
 169 {
 170     IMyComputerFolderImpl *This = (IMyComputerFolderImpl *)iface;
 171     ULONG refCount = InterlockedIncrement(&This->ref);
 172
 173     TRACE ("(%p)->(count=%u)\n", This, refCount - 1);
 174
 175     return refCount;
 176 }
 177
 178 static ULONG WINAPI ISF_MyComputer_fnRelease (IShellFolder2 * iface)
 179 {
 180     IMyComputerFolderImpl *This = (IMyComputerFolderImpl *)iface;
 181     ULONG refCount = InterlockedDecrement(&This->ref);
 182
 183     TRACE ("(%p)->(count=%u)\n", This, refCount + 1);
 184
 185     if (!refCount)
 186     {
 187         TRACE ("-- destroying IShellFolder(%p)\n", This);
 188         SHFree (This->pidlRoot);
 189         LocalFree (This);
 190     }
 191     return refCount;
 192 }
 193
 194 /**************************************************************************
 195 *    ISF_MyComputer_fnParseDisplayName
 196 */
 197 static HRESULT WINAPI ISF_MyComputer_fnParseDisplayName (IShellFolder2 *iface,
 198                HWND hwndOwner, LPBC pbc, LPOLESTR lpszDisplayName,
 199                DWORD * pchEaten, LPITEMIDLIST * ppidl, DWORD * pdwAttributes)
 200 {
 201     IMyComputerFolderImpl *This = (IMyComputerFolderImpl *)iface;
 202     HRESULT hr = E_INVALIDARG;
 203     LPCWSTR szNext = NULL;
 204     WCHAR szElement[MAX_PATH];
 205     LPITEMIDLIST pidlTemp = NULL;
 206     CLSID clsid;
 207
 208     TRACE("(%p)->(HWND=%p,%p,%p=%s,%p,pidl=%p,%p)\n", This,
 209           hwndOwner, pbc, lpszDisplayName, debugstr_w (lpszDisplayName),
 210           pchEaten, ppidl, pdwAttributes);
 211
 212     *ppidl = 0;
 213     if (pchEaten)
 214         *pchEaten = 0;        /* strange but like the original */
 215
 216     /* handle CLSID paths */
 217     if (lpszDisplayName[0] == ':' && lpszDisplayName[1] == ':')
 218     {
 219         szNext = GetNextElementW (lpszDisplayName, szElement, MAX_PATH);
 220         TRACE ("-- element: %s\n", debugstr_w (szElement));
 221         SHCLSIDFromStringW (szElement + 2, &clsid);
 222         pidlTemp = _ILCreateGuid (PT_GUID, &clsid);
 223     }
 224     /* do we have an absolute path name ? */
 225     else if (PathGetDriveNumberW (lpszDisplayName) >= 0 &&
 226               lpszDisplayName[2] == (WCHAR) '\\')
 227     {
 228         szNext = GetNextElementW (lpszDisplayName, szElement, MAX_PATH);
 229         /* make drive letter uppercase to enable PIDL comparison */
 230         szElement[0] = toupper(szElement[0]);
 231         pidlTemp = _ILCreateDrive (szElement);
 232     }
 233
 234     if (szNext && *szNext)
 235     {
 236         hr = SHELL32_ParseNextElement (iface, hwndOwner, pbc, &pidlTemp,
 237                               (LPOLESTR) szNext, pchEaten, pdwAttributes);
 238     }
 239     else
 240     {
 241         if (pdwAttributes && *pdwAttributes)
 242             SHELL32_GetItemAttributes (_IShellFolder_ (This),
 243                                        pidlTemp, pdwAttributes);
 244         hr = S_OK;
 245     }
 246
 247     *ppidl = pidlTemp;
 248
 249     TRACE ("(%p)->(-- ret=0x%08x)\n", This, hr);
 250
 251     return hr;
 252 }
 253
 254 /* retrieve a map of drives that should be displayed */
 255 static DWORD get_drive_map(void)
 256 {
 257     static const WCHAR policiesW[] = {'S','o','f','t','w','a','r','e','\\',
 258                                       'M','i','c','r','o','s','o','f','t','\\',
 259                                       'W','i','n','d','o','w','s','\\',
 260                                       'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 261                                       'P','o','l','i','c','i','e','s','\\',
 262                                       'E','x','p','l','o','r','e','r',0};
 263     static const WCHAR nodrivesW[] = {'N','o','D','r','i','v','e','s',0};
 264     static DWORD drive_mask, init_done;
 265
 266     if (!init_done)
 267     {
 268         DWORD type, size, data, mask = 0;
 269         HKEY hkey;
 270
 271         if (!RegOpenKeyW( HKEY_LOCAL_MACHINE, policiesW, &hkey ))
 272         {
 273             size = sizeof(data);
 274             if (!RegQueryValueExW( hkey, nodrivesW, NULL, &type, (LPBYTE)&data, &size ) && type == REG_DWORD)
 275                 mask |= data;
 276             RegCloseKey( hkey );
 277         }
 278         if (!RegOpenKeyW( HKEY_CURRENT_USER, policiesW, &hkey ))
 279         {
 280             size = sizeof(data);
 281             if (!RegQueryValueExW( hkey, nodrivesW, NULL, &type, (LPBYTE)&data, &size ) && type == REG_DWORD)
 282                 mask |= data;
 283             RegCloseKey( hkey );
 284         }
 285         drive_mask = mask;
 286         init_done = 1;
 287     }
 288
 289     return GetLogicalDrives() & ~drive_mask;
 290 }
 291
 292 /**************************************************************************
 293  *  CreateMyCompEnumList()
 294  */
 295 static const WCHAR MyComputer_NameSpaceW[] = { 'S','O','F','T','W','A','R','E',
 296  '\\','M','i','c','r','o','s','o','f','t','\\','W','i','n','d','o','w','s','\\',
 297  'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\','E','x','p','l',
 298  'o','r','e','r','\\','M','y','C','o','m','p','u','t','e','r','\\','N','a','m',
 299  'e','s','p','a','c','e','\0' };
 300
 301 static BOOL CreateMyCompEnumList(IEnumIDList *list, DWORD dwFlags)
 302 {
 303     BOOL ret = TRUE;
 304
 305     TRACE("(%p)->(flags=0x%08x)\n", list, dwFlags);
 306
 307     /* enumerate the folders */
 308     if (dwFlags & SHCONTF_FOLDERS)
 309     {
 310         WCHAR wszDriveName[] = {'A', ':', '\\', '\0'};
 311         DWORD dwDrivemap = get_drive_map();
 312         HKEY hkey;
 313         UINT i;
 314
 315         while (ret && wszDriveName[0]<='Z')
 316         {
 317             if(dwDrivemap & 0x00000001L)
 318                 ret = AddToEnumList(list, _ILCreateDrive(wszDriveName));
 319             wszDriveName[0]++;
 320             dwDrivemap = dwDrivemap >> 1;
 321         }
 322
 323         TRACE("-- (%p)-> enumerate (mycomputer shell extensions)\n",list);
 324         for (i=0; i<2; i++) {
 325             if (ret && !RegOpenKeyExW(i == 0 ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER,
 326                                       MyComputer_NameSpaceW, 0, KEY_READ, &hkey))
 327             {
 328                 WCHAR iid[50];
 329                 int i=0;
 330
 331                 while (ret)
 332                 {
 333                     DWORD size;
 334                     LONG r;
 335
 336                     size = sizeof(iid) / sizeof(iid[0]);
 337                     r = RegEnumKeyExW(hkey, i, iid, &size, 0, NULL, NULL, NULL);
 338                     if (ERROR_SUCCESS == r)
 339                     {
 340                         /* FIXME: shell extensions, shouldn't the type be
 341                          * PT_SHELLEXT? */
 342                         ret = AddToEnumList(list, _ILCreateGuidFromStrW(iid));
 343                         i++;
 344                     }
 345                     else if (ERROR_NO_MORE_ITEMS == r)
 346                         break;
 347                     else
 348                         ret = FALSE;
 349                 }
 350                 RegCloseKey(hkey);
 351             }
 352         }
 353     }
 354     return ret;
 355 }
 356
 357 /**************************************************************************
 358 *        ISF_MyComputer_fnEnumObjects
 359 */
 360 static HRESULT WINAPI ISF_MyComputer_fnEnumObjects (IShellFolder2 *iface,
 361                HWND hwndOwner, DWORD dwFlags, LPENUMIDLIST *ppEnumIDList)
 362 {
 363     IMyComputerFolderImpl *This = (IMyComputerFolderImpl *)iface;
 364
 365     TRACE("(%p)->(HWND=%p flags=0x%08x pplist=%p)\n", This,
 366           hwndOwner, dwFlags, ppEnumIDList);
 367
 368     *ppEnumIDList = IEnumIDList_Constructor();
 369     if (*ppEnumIDList)
 370         CreateMyCompEnumList(*ppEnumIDList, dwFlags);
 371
 372     TRACE ("-- (%p)->(new ID List: %p)\n", This, *ppEnumIDList);
 373
 374     return (*ppEnumIDList) ? S_OK : E_OUTOFMEMORY;
 375 }
 376
 377 /**************************************************************************
 378 *        ISF_MyComputer_fnBindToObject
 379 */
 380 static HRESULT WINAPI ISF_MyComputer_fnBindToObject (IShellFolder2 *iface,
 381                LPCITEMIDLIST pidl, LPBC pbcReserved, REFIID riid, LPVOID *ppvOut)
 382 {
 383     IMyComputerFolderImpl *This = (IMyComputerFolderImpl *)iface;
 384
 385     TRACE("(%p)->(pidl=%p,%p,%s,%p)\n", This,
 386           pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 387
 388     return SHELL32_BindToChild (This->pidlRoot, NULL, pidl, riid, ppvOut);
 389 }
 390
 391 /**************************************************************************
 392 *    ISF_MyComputer_fnBindToStorage
 393 */
 394 static HRESULT WINAPI ISF_MyComputer_fnBindToStorage (IShellFolder2 * iface,
 395                LPCITEMIDLIST pidl, LPBC pbcReserved, REFIID riid, LPVOID *ppvOut)
 396 {
 397     IMyComputerFolderImpl *This = (IMyComputerFolderImpl *)iface;
 398
 399     FIXME("(%p)->(pidl=%p,%p,%s,%p) stub\n", This,
 400           pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 401
 402     *ppvOut = NULL;
 403     return E_NOTIMPL;
 404 }
 405
 406 /**************************************************************************
 407 *     ISF_MyComputer_fnCompareIDs
 408 */
 409
 410 static HRESULT WINAPI ISF_MyComputer_fnCompareIDs (IShellFolder2 *iface,
 411                LPARAM lParam, LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 412 {
 413     IMyComputerFolderImpl *This = (IMyComputerFolderImpl *)iface;
 414     HRESULT hr;
 415
 416     TRACE ("(%p)->(0x%08lx,pidl1=%p,pidl2=%p)\n", This, lParam, pidl1, pidl2);
 417     hr = SHELL32_CompareIDs (_IShellFolder_ (This), lParam, pidl1, pidl2);
 418     TRACE ("-- 0x%08x\n", hr);
 419     return hr;
 420 }
 421
 422 /**************************************************************************
 423 *    ISF_MyComputer_fnCreateViewObject
 424 */
 425 static HRESULT WINAPI ISF_MyComputer_fnCreateViewObject (IShellFolder2 *iface,
 426                HWND hwndOwner, REFIID riid, LPVOID * ppvOut)
 427 {
 428     IMyComputerFolderImpl *This = (IMyComputerFolderImpl *)iface;
 429     LPSHELLVIEW pShellView;
 430     HRESULT hr = E_INVALIDARG;
 431
 432     TRACE("(%p)->(hwnd=%p,%s,%p)\n", This,
 433           hwndOwner, shdebugstr_guid (riid), ppvOut);
 434
 435     if (!ppvOut)
 436         return hr;
 437
 438     *ppvOut = NULL;
 439
 440     if (IsEqualIID (riid, &IID_IDropTarget))
 441     {
 442         WARN ("IDropTarget not implemented\n");
 443         hr = E_NOTIMPL;
 444     }
 445     else if (IsEqualIID (riid, &IID_IContextMenu))
 446     {
 447         WARN ("IContextMenu not implemented\n");
 448         hr = E_NOTIMPL;
 449     }
 450     else if (IsEqualIID (riid, &IID_IShellView))
 451     {
 452         pShellView = IShellView_Constructor ((IShellFolder *) iface);
 453         if (pShellView)
 454         {
 455             hr = IShellView_QueryInterface (pShellView, riid, ppvOut);
 456             IShellView_Release (pShellView);
 457         }
 458     }
 459     TRACE ("-- (%p)->(interface=%p)\n", This, ppvOut);
 460     return hr;
 461 }
 462
 463 /**************************************************************************
 464 *  ISF_MyComputer_fnGetAttributesOf
 465 */
 466 static HRESULT WINAPI ISF_MyComputer_fnGetAttributesOf (IShellFolder2 * iface,
 467                 UINT cidl, LPCITEMIDLIST * apidl, DWORD * rgfInOut)
 468 {
 469     IMyComputerFolderImpl *This = (IMyComputerFolderImpl *)iface;
 470     HRESULT hr = S_OK;
 471
 472     TRACE ("(%p)->(cidl=%d apidl=%p mask=%p (0x%08x))\n",
 473            This, cidl, apidl, rgfInOut, rgfInOut ? *rgfInOut : 0);
 474
 475     if (!rgfInOut)
 476         return E_INVALIDARG;
 477     if (cidl && !apidl)
 478         return E_INVALIDARG;
 479
 480     if (*rgfInOut == 0)
 481         *rgfInOut = ~0;
 482
 483     if(cidl == 0){
 484         IShellFolder *psfParent = NULL;
 485         LPCITEMIDLIST rpidl = NULL;
 486
 487         hr = SHBindToParent(This->pidlRoot, &IID_IShellFolder, (LPVOID*)&psfParent, &rpidl);
 488         if(SUCCEEDED(hr)) {
 489             SHELL32_GetItemAttributes (psfParent, rpidl, rgfInOut);
 490             IShellFolder_Release(psfParent);
 491         }
 492     } else {
 493         while (cidl > 0 && *apidl) {
 494             pdump (*apidl);
 495             SHELL32_GetItemAttributes (_IShellFolder_ (This), *apidl, rgfInOut);
 496             apidl++;
 497             cidl--;
 498         }
 499     }
 500     /* make sure SFGAO_VALIDATE is cleared, some apps depend on that */
 501     *rgfInOut &= ~SFGAO_VALIDATE;
 502
 503     TRACE ("-- result=0x%08x\n", *rgfInOut);
 504     return hr;
 505 }
 506
 507 /**************************************************************************
 508 *    ISF_MyComputer_fnGetUIObjectOf
 509 *
 510 * PARAMETERS
 511 *  hwndOwner [in]  Parent window for any output
 512 *  cidl      [in]  array size
 513 *  apidl     [in]  simple pidl array
 514 *  riid      [in]  Requested Interface
 515 *  prgfInOut [   ] reserved
 516 *  ppvObject [out] Resulting Interface
 517 *
 518 */
 519 static HRESULT WINAPI ISF_MyComputer_fnGetUIObjectOf (IShellFolder2 * iface,
 520                 HWND hwndOwner, UINT cidl, LPCITEMIDLIST * apidl, REFIID riid,
 521                 UINT * prgfInOut, LPVOID * ppvOut)
 522 {
 523     IMyComputerFolderImpl *This = (IMyComputerFolderImpl *)iface;
 524
 525     LPITEMIDLIST pidl;
 526     IUnknown *pObj = NULL;
 527     HRESULT hr = E_INVALIDARG;
 528
 529     TRACE("(%p)->(%p,%u,apidl=%p,%s,%p,%p)\n", This,
 530           hwndOwner, cidl, apidl, shdebugstr_guid (riid), prgfInOut, ppvOut);
 531
 532     if (!ppvOut)
 533         return hr;
 534
 535     *ppvOut = NULL;
 536
 537     if (IsEqualIID (riid, &IID_IContextMenu) && (cidl >= 1))
 538     {
 539         pObj = (LPUNKNOWN) ISvItemCm_Constructor ((IShellFolder *) iface,
 540                                               This->pidlRoot, apidl, cidl);
 541         hr = S_OK;
 542     }
 543     else if (IsEqualIID (riid, &IID_IDataObject) && (cidl >= 1))
 544     {
 545         pObj = (LPUNKNOWN) IDataObject_Constructor (hwndOwner,
 546                                               This->pidlRoot, apidl, cidl);
 547         hr = S_OK;
 548     }
 549     else if (IsEqualIID (riid, &IID_IExtractIconA) && (cidl == 1))
 550     {
 551         pidl = ILCombine (This->pidlRoot, apidl[0]);
 552         pObj = (LPUNKNOWN) IExtractIconA_Constructor (pidl);
 553         SHFree (pidl);
 554         hr = S_OK;
 555     }
 556     else if (IsEqualIID (riid, &IID_IExtractIconW) && (cidl == 1))
 557     {
 558         pidl = ILCombine (This->pidlRoot, apidl[0]);
 559         pObj = (LPUNKNOWN) IExtractIconW_Constructor (pidl);
 560         SHFree (pidl);
 561         hr = S_OK;
 562     }
 563     else if (IsEqualIID (riid, &IID_IDropTarget) && (cidl >= 1))
 564     {
 565         hr = IShellFolder_QueryInterface (iface, &IID_IDropTarget,
 566                                           (LPVOID *) &pObj);
 567     }
 568     else if ((IsEqualIID(riid,&IID_IShellLinkW) ||
 569               IsEqualIID(riid,&IID_IShellLinkA)) && (cidl == 1))
 570     {
 571         pidl = ILCombine (This->pidlRoot, apidl[0]);
 572         hr = IShellLink_ConstructFromFile(NULL, riid, pidl, (LPVOID*) &pObj);
 573         SHFree (pidl);
 574     }
 575     else
 576         hr = E_NOINTERFACE;
 577
 578     if (SUCCEEDED(hr) && !pObj)
 579         hr = E_OUTOFMEMORY;
 580
 581     *ppvOut = pObj;
 582     TRACE ("(%p)->hr=0x%08x\n", This, hr);
 583     return hr;
 584 }
 585
 586 /**************************************************************************
 587 *    ISF_MyComputer_fnGetDisplayNameOf
 588 */
 589 static HRESULT WINAPI ISF_MyComputer_fnGetDisplayNameOf (IShellFolder2 *iface,
 590                LPCITEMIDLIST pidl, DWORD dwFlags, LPSTRRET strRet)
 591 {
 592     IMyComputerFolderImpl *This = (IMyComputerFolderImpl *)iface;
 593
 594     LPWSTR pszPath;
 595     HRESULT hr = S_OK;
 596
 597     TRACE ("(%p)->(pidl=%p,0x%08x,%p)\n", This, pidl, dwFlags, strRet);
 598     pdump (pidl);
 599
 600     if (!strRet)
 601         return E_INVALIDARG;
 602
 603     pszPath = CoTaskMemAlloc((MAX_PATH +1) * sizeof(WCHAR));
 604     if (!pszPath)
 605         return E_OUTOFMEMORY;
 606
 607     pszPath[0] = 0;
 608
 609     if (!pidl->mkid.cb)
 610     {
 611         /* parsing name like ::{...} */
 612         pszPath[0] = ':';
 613         pszPath[1] = ':';
 614         SHELL32_GUIDToStringW(&CLSID_MyComputer, &pszPath[2]);
 615     }
 616     else if (_ILIsPidlSimple(pidl))
 617     {
 618         /* take names of special folders only if its only this folder */
 619         if (_ILIsSpecialFolder(pidl))
 620         {
 621             GUID const *clsid;
 622
 623             clsid = _ILGetGUIDPointer (pidl);
 624             if (clsid)
 625             {
 626                 if (GET_SHGDN_FOR (dwFlags) & SHGDN_FORPARSING)
 627                 {
 628                     static const WCHAR clsidW[] =
 629                      { 'C','L','S','I','D','\\',0 };
 630                     static const WCHAR shellfolderW[] =
 631                      { '\\','s','h','e','l','l','f','o','l','d','e','r',0 };
 632                     static const WCHAR wantsForParsingW[] =
 633                      { 'W','a','n','t','s','F','o','r','P','a','r','s','i','n',
 634                      'g',0 };
 635                     int bWantsForParsing = FALSE;
 636                     WCHAR szRegPath[100];
 637                     LONG r;
 638
 639                     /*
 640                      * We can only get a filesystem path from a shellfolder
 641                      * if the value WantsFORPARSING exists in
 642                      *      CLSID\\{...}\\shellfolder
 643                      * exception: the MyComputer folder has this keys not
 644                      *            but like any filesystem backed
 645                      *            folder it needs these behaviour
 646                      *
 647                      * Get the "WantsFORPARSING" flag from the registry
 648                      */
 649
 650                     lstrcpyW (szRegPath, clsidW);
 651                     SHELL32_GUIDToStringW (clsid, &szRegPath[6]);
 652                     lstrcatW (szRegPath, shellfolderW);
 653                     r = SHGetValueW (HKEY_CLASSES_ROOT, szRegPath,
 654                                      wantsForParsingW, NULL, NULL, NULL);
 655                     if (r == ERROR_SUCCESS)
 656                         bWantsForParsing = TRUE;
 657
 658                     if ((GET_SHGDN_RELATION (dwFlags) == SHGDN_NORMAL) &&
 659                         bWantsForParsing)
 660                     {
 661                         /*
 662                          * We need the filesystem path to the destination folder
 663                          * Only the folder itself can know it
 664                          */
 665                         hr = SHELL32_GetDisplayNameOfChild (iface, pidl,
 666                                                 dwFlags, pszPath, MAX_PATH);
 667                     }
 668                     else
 669                     {
 670                         LPWSTR p = pszPath;
 671
 672                         /* parsing name like ::{...} */
 673                         p[0] = ':';
 674                         p[1] = ':';
 675                         p += 2;
 676                         p += SHELL32_GUIDToStringW(&CLSID_MyComputer, p);
 677
 678                         /* \:: */
 679                         p[0] = '\\';
 680                         p[1] = ':';
 681                         p[2] = ':';
 682                         p += 3;
 683                         SHELL32_GUIDToStringW(clsid, p);
 684                     }
 685                 }
 686                 else
 687                 {
 688                     /* user friendly name */
 689                     HCR_GetClassNameW (clsid, pszPath, MAX_PATH);
 690                 }
 691             }
 692             else
 693             {
 694                 /* append my own path */
 695                 _ILSimpleGetTextW (pidl, pszPath, MAX_PATH);
 696             }
 697         }
 698         else if (_ILIsDrive(pidl))
 699         {
 700             _ILSimpleGetTextW (pidl, pszPath, MAX_PATH);    /* append my own path */
 701
 702             /* long view "lw_name (C:)" */
 703             if (!(dwFlags & SHGDN_FORPARSING))
 704             {
 705                 DWORD dwVolumeSerialNumber, dwMaximumComponetLength, dwFileSystemFlags;
 706                 WCHAR wszDrive[18] = {0};
 707                 static const WCHAR wszOpenBracket[] = {' ','(',0};
 708                 static const WCHAR wszCloseBracket[] = {')',0};
 709
 710                 GetVolumeInformationW (pszPath, wszDrive,
 711                            sizeof(wszDrive)/sizeof(wszDrive[0]) - 6,
 712                            &dwVolumeSerialNumber,
 713                            &dwMaximumComponetLength, &dwFileSystemFlags, NULL, 0);
 714                 strcatW (wszDrive, wszOpenBracket);
 715                 lstrcpynW (wszDrive + strlenW(wszDrive), pszPath, 3);
 716                 strcatW (wszDrive, wszCloseBracket);
 717                 strcpyW (pszPath, wszDrive);
 718             }
 719         }
 720         else
 721         {
 722             /* Neither a shell namespace extension nor a drive letter. */
 723             ERR("Wrong pidl type\n");
 724             CoTaskMemFree(pszPath);
 725             return E_INVALIDARG;
 726         }
 727     }
 728     else
 729     {
 730         /* Complex pidl. Let the child folder do the work */
 731         hr = SHELL32_GetDisplayNameOfChild(iface, pidl, dwFlags, pszPath, MAX_PATH);
 732     }
 733
 734     if (SUCCEEDED (hr))
 735     {
 736         /* Win9x always returns ANSI strings, NT always returns Unicode strings */
 737         if (GetVersion() & 0x80000000)
 738         {
 739             strRet->uType = STRRET_CSTR;
 740             if (!WideCharToMultiByte(CP_ACP, 0, pszPath, -1, strRet->u.cStr, MAX_PATH,
 741                     NULL, NULL))
 742                 strRet->u.cStr[0] = '\0';
 743             CoTaskMemFree(pszPath);
 744         }
 745         else
 746         {
 747             strRet->uType = STRRET_WSTR;
 748             strRet->u.pOleStr = pszPath;
 749         }
 750     }
 751     else
 752         CoTaskMemFree(pszPath);
 753
 754     TRACE ("-- (%p)->(%s)\n", This, strRet->uType == STRRET_CSTR ? strRet->u.cStr : debugstr_w(strRet->u.pOleStr));
 755     return hr;
 756 }
 757
 758 /**************************************************************************
 759 *  ISF_MyComputer_fnSetNameOf
 760 *  Changes the name of a file object or subfolder, possibly changing its item
 761 *  identifier in the process.
 762 *
 763 * PARAMETERS
 764 *  hwndOwner  [in]   Owner window for output
 765 *  pidl       [in]   simple pidl of item to change
 766 *  lpszName   [in]   the items new display name
 767 *  dwFlags    [in]   SHGNO formatting flags
 768 *  ppidlOut   [out]  simple pidl returned
 769 */
 770 static HRESULT WINAPI ISF_MyComputer_fnSetNameOf (
 771                IShellFolder2 * iface, HWND hwndOwner, LPCITEMIDLIST pidl,
 772                LPCOLESTR lpName, DWORD dwFlags, LPITEMIDLIST * pPidlOut)
 773 {
 774     IMyComputerFolderImpl *This = (IMyComputerFolderImpl *)iface;
 775     FIXME ("(%p)->(%p,pidl=%p,%s,%u,%p)\n", This,
 776            hwndOwner, pidl, debugstr_w (lpName), dwFlags, pPidlOut);
 777     return E_FAIL;
 778 }
 779
 780 static HRESULT WINAPI ISF_MyComputer_fnGetDefaultSearchGUID (
 781                IShellFolder2 * iface, GUID * pguid)
 782 {
 783     IMyComputerFolderImpl *This = (IMyComputerFolderImpl *)iface;
 784     FIXME ("(%p)\n", This);
 785     return E_NOTIMPL;
 786 }
 787 static HRESULT WINAPI ISF_MyComputer_fnEnumSearches (
 788                IShellFolder2 * iface, IEnumExtraSearch ** ppenum)
 789 {
 790     IMyComputerFolderImpl *This = (IMyComputerFolderImpl *)iface;
 791     FIXME ("(%p)\n", This);
 792     return E_NOTIMPL;
 793 }
 794 static HRESULT WINAPI ISF_MyComputer_fnGetDefaultColumn (
 795                IShellFolder2 *iface, DWORD dwRes, ULONG *pSort, ULONG *pDisplay)
 796 {
 797     IMyComputerFolderImpl *This = (IMyComputerFolderImpl *)iface;
 798
 799     TRACE ("(%p)\n", This);
 800
 801     if (pSort)
 802          *pSort = 0;
 803     if (pDisplay)
 804         *pDisplay = 0;
 805     return S_OK;
 806 }
 807 static HRESULT WINAPI ISF_MyComputer_fnGetDefaultColumnState (
 808                IShellFolder2 * iface, UINT iColumn, DWORD * pcsFlags)
 809 {
 810     IMyComputerFolderImpl *This = (IMyComputerFolderImpl *)iface;
 811
 812     TRACE ("(%p)->(%d %p)\n", This, iColumn, pcsFlags);
 813
 814     if (!pcsFlags || iColumn >= MYCOMPUTERSHELLVIEWCOLUMNS)
 815         return E_INVALIDARG;
 816
 817     *pcsFlags = mycomputer_header[iColumn].pcsFlags;
 818
 819     return S_OK;
 820 }
 821
 822 static HRESULT WINAPI ISF_MyComputer_fnGetDetailsEx (IShellFolder2 * iface,
 823                LPCITEMIDLIST pidl, const SHCOLUMNID * pscid, VARIANT * pv)
 824 {
 825     IMyComputerFolderImpl *This = (IMyComputerFolderImpl *)iface;
 826     FIXME ("(%p)\n", This);
 827     return E_NOTIMPL;
 828 }
 829
 830 /* FIXME: drive size >4GB is rolling over */
 831 static HRESULT WINAPI ISF_MyComputer_fnGetDetailsOf (IShellFolder2 *iface,
 832                LPCITEMIDLIST pidl, UINT iColumn, SHELLDETAILS *psd)
 833 {
 834     IMyComputerFolderImpl *This = (IMyComputerFolderImpl *)iface;
 835     char szPath[MAX_PATH];
 836     ULARGE_INTEGER ulBytes;
 837     HRESULT hr = S_OK;
 838
 839     TRACE ("(%p)->(%p %i %p)\n", This, pidl, iColumn, psd);
 840
 841     if (!psd || iColumn >= MYCOMPUTERSHELLVIEWCOLUMNS)
 842         return E_INVALIDARG;
 843
 844     if (!pidl)
 845         return SHELL32_GetColumnDetails(mycomputer_header, iColumn, psd);
 846
 847     psd->str.u.cStr[0] = 0;
 848     psd->str.uType = STRRET_CSTR;
 849
 850     switch (iColumn)
 851     {
 852         case 0:        /* name */
 853             hr = IShellFolder_GetDisplayNameOf (iface, pidl,
 854                        SHGDN_NORMAL | SHGDN_INFOLDER, &psd->str);
 855             break;
 856         case 1:        /* type */
 857             _ILGetFileType (pidl, psd->str.u.cStr, MAX_PATH);
 858             break;
 859         case 2:        /* total size */
 860             if (_ILIsDrive (pidl))
 861             {
 862                 _ILSimpleGetText (pidl, szPath, MAX_PATH);
 863                 GetDiskFreeSpaceExA (szPath, NULL, &ulBytes, NULL);
 864                 StrFormatByteSizeA (ulBytes.u.LowPart, psd->str.u.cStr, MAX_PATH);
 865             }
 866             break;
 867         case 3:        /* free size */
 868             if (_ILIsDrive (pidl))
 869             {
 870                 _ILSimpleGetText (pidl, szPath, MAX_PATH);
 871                 GetDiskFreeSpaceExA (szPath, &ulBytes, NULL, NULL);
 872                 StrFormatByteSizeA (ulBytes.u.LowPart, psd->str.u.cStr, MAX_PATH);
 873             }
 874             break;
 875     }
 876
 877     return hr;
 878 }
 879
 880 static HRESULT WINAPI ISF_MyComputer_fnMapColumnToSCID (
 881                IShellFolder2 * iface, UINT column, SHCOLUMNID * pscid)
 882 {
 883     IMyComputerFolderImpl *This = (IMyComputerFolderImpl *)iface;
 884     FIXME ("(%p)\n", This);
 885     return E_NOTIMPL;
 886 }
 887
 888 static const IShellFolder2Vtbl vt_ShellFolder2 =
 889 {
 890     ISF_MyComputer_fnQueryInterface,
 891     ISF_MyComputer_fnAddRef,
 892     ISF_MyComputer_fnRelease,
 893     ISF_MyComputer_fnParseDisplayName,
 894     ISF_MyComputer_fnEnumObjects,
 895     ISF_MyComputer_fnBindToObject,
 896     ISF_MyComputer_fnBindToStorage,
 897     ISF_MyComputer_fnCompareIDs,
 898     ISF_MyComputer_fnCreateViewObject,
 899     ISF_MyComputer_fnGetAttributesOf,
 900     ISF_MyComputer_fnGetUIObjectOf,
 901     ISF_MyComputer_fnGetDisplayNameOf,
 902     ISF_MyComputer_fnSetNameOf,
 903     /* ShellFolder2 */
 904     ISF_MyComputer_fnGetDefaultSearchGUID,
 905     ISF_MyComputer_fnEnumSearches,
 906     ISF_MyComputer_fnGetDefaultColumn,
 907     ISF_MyComputer_fnGetDefaultColumnState,
 908     ISF_MyComputer_fnGetDetailsEx,
 909     ISF_MyComputer_fnGetDetailsOf,
 910     ISF_MyComputer_fnMapColumnToSCID
 911 };
 912
 913 /************************************************************************
 914  *    IMCFldr_PersistFolder2_QueryInterface
 915  */
 916 static HRESULT WINAPI IMCFldr_PersistFolder2_QueryInterface (
 917                IPersistFolder2 * iface, REFIID iid, LPVOID * ppvObj)
 918 {
 919     IMyComputerFolderImpl *This = impl_from_IPersistFolder2(iface);
 920     TRACE ("(%p)\n", This);
 921     return IUnknown_QueryInterface ((IShellFolder2 *)This, iid, ppvObj);
 922 }
 923
 924 /************************************************************************
 925  *    IMCFldr_PersistFolder2_AddRef
 926  */
 927 static ULONG WINAPI IMCFldr_PersistFolder2_AddRef (IPersistFolder2 * iface)
 928 {
 929     IMyComputerFolderImpl *This = impl_from_IPersistFolder2(iface);
 930     TRACE ("(%p)->(count=%u)\n", This, This->ref);
 931     return IUnknown_AddRef ((IShellFolder2 *)This);
 932 }
 933
 934 /************************************************************************
 935  *    ISFPersistFolder_Release
 936  */
 937 static ULONG WINAPI IMCFldr_PersistFolder2_Release (IPersistFolder2 * iface)
 938 {
 939     IMyComputerFolderImpl *This = impl_from_IPersistFolder2(iface);
 940     TRACE ("(%p)->(count=%u)\n", This, This->ref);
 941     return IUnknown_Release ((IShellFolder2 *)This);
 942 }
 943
 944 /************************************************************************
 945  *    IMCFldr_PersistFolder2_GetClassID
 946  */
 947 static HRESULT WINAPI IMCFldr_PersistFolder2_GetClassID (
 948                IPersistFolder2 * iface, CLSID * lpClassId)
 949 {
 950     IMyComputerFolderImpl *This = impl_from_IPersistFolder2(iface);
 951
 952     TRACE ("(%p)\n", This);
 953
 954     if (!lpClassId)
 955     return E_POINTER;
 956     *lpClassId = CLSID_MyComputer;
 957
 958     return S_OK;
 959 }
 960
 961 /************************************************************************
 962  *    IMCFldr_PersistFolder2_Initialize
 963  *
 964  * NOTES: it makes no sense to change the pidl
 965  */
 966 static HRESULT WINAPI IMCFldr_PersistFolder2_Initialize (
 967                IPersistFolder2 * iface, LPCITEMIDLIST pidl)
 968 {
 969     IMyComputerFolderImpl *This = impl_from_IPersistFolder2(iface);
 970     TRACE ("(%p)->(%p)\n", This, pidl);
 971     return E_NOTIMPL;
 972 }
 973
 974 /**************************************************************************
 975  *    IPersistFolder2_fnGetCurFolder
 976  */
 977 static HRESULT WINAPI IMCFldr_PersistFolder2_GetCurFolder (
 978                IPersistFolder2 * iface, LPITEMIDLIST * pidl)
 979 {
 980     IMyComputerFolderImpl *This = impl_from_IPersistFolder2(iface);
 981
 982     TRACE ("(%p)->(%p)\n", This, pidl);
 983
 984     if (!pidl)
 985         return E_POINTER;
 986     *pidl = ILClone (This->pidlRoot);
 987     return S_OK;
 988 }
 989
 990 static const IPersistFolder2Vtbl vt_PersistFolder2 =
 991 {
 992     IMCFldr_PersistFolder2_QueryInterface,
 993     IMCFldr_PersistFolder2_AddRef,
 994     IMCFldr_PersistFolder2_Release,
 995     IMCFldr_PersistFolder2_GetClassID,
 996     IMCFldr_PersistFolder2_Initialize,
 997     IMCFldr_PersistFolder2_GetCurFolder
 998 };