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)   (&(This)->lpVtbl)
  81
  82 #define _IPersist_(This)        (&(This)->lpVtblPersistFolder2)
  83 #define _IPersistFolder_(This)  (&(This)->lpVtblPersistFolder2)
  84 #define _IPersistFolder2_(This) (&(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 (FAILED (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 (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 /* retrieve a map of drives that should be displayed */
 256 static DWORD get_drive_map(void)
 257 {
 258     static const WCHAR policiesW[] = {'S','o','f','t','w','a','r','e','\\',
 259                                       'M','i','c','r','o','s','o','f','t','\\',
 260                                       'W','i','n','d','o','w','s','\\',
 261                                       'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 262                                       'P','o','l','i','c','i','e','s','\\',
 263                                       'E','x','p','l','o','r','e','r',0};
 264     static const WCHAR nodrivesW[] = {'N','o','D','r','i','v','e','s',0};
 265     static DWORD drive_mask, init_done;
 266
 267     if (!init_done)
 268     {
 269         DWORD type, size, data, mask = 0;
 270         HKEY hkey;
 271
 272         if (!RegOpenKeyW( HKEY_LOCAL_MACHINE, policiesW, &hkey ))
 273         {
 274             size = sizeof(data);
 275             if (!RegQueryValueExW( hkey, nodrivesW, NULL, &type, (LPBYTE)&data, &size ) && type == REG_DWORD)
 276                 mask |= data;
 277             RegCloseKey( hkey );
 278         }
 279         if (!RegOpenKeyW( HKEY_CURRENT_USER, policiesW, &hkey ))
 280         {
 281             size = sizeof(data);
 282             if (!RegQueryValueExW( hkey, nodrivesW, NULL, &type, (LPBYTE)&data, &size ) && type == REG_DWORD)
 283                 mask |= data;
 284             RegCloseKey( hkey );
 285         }
 286         drive_mask = mask;
 287         init_done = 1;
 288     }
 289
 290     return GetLogicalDrives() & ~drive_mask;
 291 }
 292
 293 /**************************************************************************
 294  *  CreateMyCompEnumList()
 295  */
 296 static const WCHAR MyComputer_NameSpaceW[] = { 'S','O','F','T','W','A','R','E',
 297  '\\','M','i','c','r','o','s','o','f','t','\\','W','i','n','d','o','w','s','\\',
 298  'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\','E','x','p','l',
 299  'o','r','e','r','\\','M','y','C','o','m','p','u','t','e','r','\\','N','a','m',
 300  'e','s','p','a','c','e','\0' };
 301
 302 static BOOL CreateMyCompEnumList(IEnumIDList *list, DWORD dwFlags)
 303 {
 304     BOOL ret = TRUE;
 305
 306     TRACE("(%p)->(flags=0x%08x)\n", list, dwFlags);
 307
 308     /* enumerate the folders */
 309     if (dwFlags & SHCONTF_FOLDERS)
 310     {
 311         WCHAR wszDriveName[] = {'A', ':', '\\', '\0'};
 312         DWORD dwDrivemap = get_drive_map();
 313         HKEY hkey;
 314         UINT i;
 315
 316         while (ret && wszDriveName[0]<='Z')
 317         {
 318             if(dwDrivemap & 0x00000001L)
 319                 ret = AddToEnumList(list, _ILCreateDrive(wszDriveName));
 320             wszDriveName[0]++;
 321             dwDrivemap = dwDrivemap >> 1;
 322         }
 323
 324         TRACE("-- (%p)-> enumerate (mycomputer shell extensions)\n",list);
 325         for (i=0; i<2; i++) {
 326             if (ret && !RegOpenKeyExW(i == 0 ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER,
 327                                       MyComputer_NameSpaceW, 0, KEY_READ, &hkey))
 328             {
 329                 WCHAR iid[50];
 330                 int i=0;
 331
 332                 while (ret)
 333                 {
 334                     DWORD size;
 335                     LONG r;
 336
 337                     size = sizeof(iid) / sizeof(iid[0]);
 338                     r = RegEnumKeyExW(hkey, i, iid, &size, 0, NULL, NULL, NULL);
 339                     if (ERROR_SUCCESS == r)
 340                     {
 341                         /* FIXME: shell extensions, shouldn't the type be
 342                          * PT_SHELLEXT? */
 343                         ret = AddToEnumList(list, _ILCreateGuidFromStrW(iid));
 344                         i++;
 345                     }
 346                     else if (ERROR_NO_MORE_ITEMS == r)
 347                         break;
 348                     else
 349                         ret = FALSE;
 350                 }
 351                 RegCloseKey(hkey);
 352             }
 353         }
 354     }
 355     return ret;
 356 }
 357
 358 /**************************************************************************
 359 *        ISF_MyComputer_fnEnumObjects
 360 */
 361 static HRESULT WINAPI ISF_MyComputer_fnEnumObjects (IShellFolder2 *iface,
 362                HWND hwndOwner, DWORD dwFlags, LPENUMIDLIST *ppEnumIDList)
 363 {
 364     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 365
 366     TRACE("(%p)->(HWND=%p flags=0x%08x pplist=%p)\n", This,
 367           hwndOwner, dwFlags, ppEnumIDList);
 368
 369     *ppEnumIDList = IEnumIDList_Constructor();
 370     if (*ppEnumIDList)
 371         CreateMyCompEnumList(*ppEnumIDList, dwFlags);
 372
 373     TRACE ("-- (%p)->(new ID List: %p)\n", This, *ppEnumIDList);
 374
 375     return (*ppEnumIDList) ? S_OK : E_OUTOFMEMORY;
 376 }
 377
 378 /**************************************************************************
 379 *        ISF_MyComputer_fnBindToObject
 380 */
 381 static HRESULT WINAPI ISF_MyComputer_fnBindToObject (IShellFolder2 *iface,
 382                LPCITEMIDLIST pidl, LPBC pbcReserved, REFIID riid, LPVOID *ppvOut)
 383 {
 384     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 385
 386     TRACE("(%p)->(pidl=%p,%p,%s,%p)\n", This,
 387           pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 388
 389     return SHELL32_BindToChild (This->pidlRoot, NULL, pidl, riid, ppvOut);
 390 }
 391
 392 /**************************************************************************
 393 *    ISF_MyComputer_fnBindToStorage
 394 */
 395 static HRESULT WINAPI ISF_MyComputer_fnBindToStorage (IShellFolder2 * iface,
 396                LPCITEMIDLIST pidl, LPBC pbcReserved, REFIID riid, LPVOID *ppvOut)
 397 {
 398     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 399
 400     FIXME("(%p)->(pidl=%p,%p,%s,%p) stub\n", This,
 401           pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 402
 403     *ppvOut = NULL;
 404     return E_NOTIMPL;
 405 }
 406
 407 /**************************************************************************
 408 *     ISF_MyComputer_fnCompareIDs
 409 */
 410
 411 static HRESULT WINAPI ISF_MyComputer_fnCompareIDs (IShellFolder2 *iface,
 412                LPARAM lParam, LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 413 {
 414     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 415     int nReturn;
 416
 417     TRACE ("(%p)->(0x%08lx,pidl1=%p,pidl2=%p)\n", This, lParam, pidl1, pidl2);
 418     nReturn = SHELL32_CompareIDs (_IShellFolder_ (This), lParam, pidl1, pidl2);
 419     TRACE ("-- %i\n", nReturn);
 420     return nReturn;
 421 }
 422
 423 /**************************************************************************
 424 *    ISF_MyComputer_fnCreateViewObject
 425 */
 426 static HRESULT WINAPI ISF_MyComputer_fnCreateViewObject (IShellFolder2 *iface,
 427                HWND hwndOwner, REFIID riid, LPVOID * ppvOut)
 428 {
 429     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 430     LPSHELLVIEW pShellView;
 431     HRESULT hr = E_INVALIDARG;
 432
 433     TRACE("(%p)->(hwnd=%p,%s,%p)\n", This,
 434           hwndOwner, shdebugstr_guid (riid), ppvOut);
 435
 436     if (!ppvOut)
 437         return hr;
 438
 439     *ppvOut = NULL;
 440
 441     if (IsEqualIID (riid, &IID_IDropTarget))
 442     {
 443         WARN ("IDropTarget not implemented\n");
 444         hr = E_NOTIMPL;
 445     }
 446     else if (IsEqualIID (riid, &IID_IContextMenu))
 447     {
 448         WARN ("IContextMenu not implemented\n");
 449         hr = E_NOTIMPL;
 450     }
 451     else if (IsEqualIID (riid, &IID_IShellView))
 452     {
 453         pShellView = IShellView_Constructor ((IShellFolder *) iface);
 454         if (pShellView)
 455         {
 456             hr = IShellView_QueryInterface (pShellView, riid, ppvOut);
 457             IShellView_Release (pShellView);
 458         }
 459     }
 460     TRACE ("-- (%p)->(interface=%p)\n", This, ppvOut);
 461     return hr;
 462 }
 463
 464 /**************************************************************************
 465 *  ISF_MyComputer_fnGetAttributesOf
 466 */
 467 static HRESULT WINAPI ISF_MyComputer_fnGetAttributesOf (IShellFolder2 * iface,
 468                 UINT cidl, LPCITEMIDLIST * apidl, DWORD * rgfInOut)
 469 {
 470     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 471     HRESULT hr = S_OK;
 472
 473     TRACE ("(%p)->(cidl=%d apidl=%p mask=%p (0x%08x))\n",
 474            This, cidl, apidl, rgfInOut, rgfInOut ? *rgfInOut : 0);
 475
 476     if (!rgfInOut)
 477         return E_INVALIDARG;
 478     if (cidl && !apidl)
 479         return E_INVALIDARG;
 480
 481     if (*rgfInOut == 0)
 482         *rgfInOut = ~0;
 483
 484     if(cidl == 0){
 485         IShellFolder *psfParent = NULL;
 486         LPCITEMIDLIST rpidl = NULL;
 487
 488         hr = SHBindToParent(This->pidlRoot, &IID_IShellFolder, (LPVOID*)&psfParent, &rpidl);
 489         if(SUCCEEDED(hr)) {
 490             SHELL32_GetItemAttributes (psfParent, rpidl, rgfInOut);
 491             IShellFolder_Release(psfParent);
 492         }
 493     } else {
 494         while (cidl > 0 && *apidl) {
 495             pdump (*apidl);
 496             SHELL32_GetItemAttributes (_IShellFolder_ (This), *apidl, rgfInOut);
 497             apidl++;
 498             cidl--;
 499         }
 500     }
 501     /* make sure SFGAO_VALIDATE is cleared, some apps depend on that */
 502     *rgfInOut &= ~SFGAO_VALIDATE;
 503
 504     TRACE ("-- result=0x%08x\n", *rgfInOut);
 505     return hr;
 506 }
 507
 508 /**************************************************************************
 509 *    ISF_MyComputer_fnGetUIObjectOf
 510 *
 511 * PARAMETERS
 512 *  hwndOwner [in]  Parent window for any output
 513 *  cidl      [in]  array size
 514 *  apidl     [in]  simple pidl array
 515 *  riid      [in]  Requested Interface
 516 *  prgfInOut [   ] reserved
 517 *  ppvObject [out] Resulting Interface
 518 *
 519 */
 520 static HRESULT WINAPI ISF_MyComputer_fnGetUIObjectOf (IShellFolder2 * iface,
 521                 HWND hwndOwner, UINT cidl, LPCITEMIDLIST * apidl, REFIID riid,
 522                 UINT * prgfInOut, LPVOID * ppvOut)
 523 {
 524     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 525
 526     LPITEMIDLIST pidl;
 527     IUnknown *pObj = NULL;
 528     HRESULT hr = E_INVALIDARG;
 529
 530     TRACE("(%p)->(%p,%u,apidl=%p,%s,%p,%p)\n", This,
 531           hwndOwner, cidl, apidl, shdebugstr_guid (riid), prgfInOut, ppvOut);
 532
 533     if (!ppvOut)
 534         return hr;
 535
 536     *ppvOut = NULL;
 537
 538     if (IsEqualIID (riid, &IID_IContextMenu) && (cidl >= 1))
 539     {
 540         pObj = (LPUNKNOWN) ISvItemCm_Constructor ((IShellFolder *) iface,
 541                                               This->pidlRoot, apidl, cidl);
 542         hr = S_OK;
 543     }
 544     else if (IsEqualIID (riid, &IID_IDataObject) && (cidl >= 1))
 545     {
 546         pObj = (LPUNKNOWN) IDataObject_Constructor (hwndOwner,
 547                                               This->pidlRoot, apidl, cidl);
 548         hr = S_OK;
 549     }
 550     else if (IsEqualIID (riid, &IID_IExtractIconA) && (cidl == 1))
 551     {
 552         pidl = ILCombine (This->pidlRoot, apidl[0]);
 553         pObj = (LPUNKNOWN) IExtractIconA_Constructor (pidl);
 554         SHFree (pidl);
 555         hr = S_OK;
 556     }
 557     else if (IsEqualIID (riid, &IID_IExtractIconW) && (cidl == 1))
 558     {
 559         pidl = ILCombine (This->pidlRoot, apidl[0]);
 560         pObj = (LPUNKNOWN) IExtractIconW_Constructor (pidl);
 561         SHFree (pidl);
 562         hr = S_OK;
 563     }
 564     else if (IsEqualIID (riid, &IID_IDropTarget) && (cidl >= 1))
 565     {
 566         hr = IShellFolder_QueryInterface (iface, &IID_IDropTarget,
 567                                           (LPVOID *) &pObj);
 568     }
 569     else if ((IsEqualIID(riid,&IID_IShellLinkW) ||
 570               IsEqualIID(riid,&IID_IShellLinkA)) && (cidl == 1))
 571     {
 572         pidl = ILCombine (This->pidlRoot, apidl[0]);
 573         hr = IShellLink_ConstructFromFile(NULL, riid, pidl, (LPVOID*) &pObj);
 574         SHFree (pidl);
 575     }
 576     else
 577         hr = E_NOINTERFACE;
 578
 579     if (SUCCEEDED(hr) && !pObj)
 580         hr = E_OUTOFMEMORY;
 581
 582     *ppvOut = pObj;
 583     TRACE ("(%p)->hr=0x%08x\n", This, hr);
 584     return hr;
 585 }
 586
 587 /**************************************************************************
 588 *    ISF_MyComputer_fnGetDisplayNameOf
 589 */
 590 static HRESULT WINAPI ISF_MyComputer_fnGetDisplayNameOf (IShellFolder2 *iface,
 591                LPCITEMIDLIST pidl, DWORD dwFlags, LPSTRRET strRet)
 592 {
 593     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 594
 595     LPWSTR pszPath;
 596     HRESULT hr = S_OK;
 597
 598     TRACE ("(%p)->(pidl=%p,0x%08x,%p)\n", This, pidl, dwFlags, strRet);
 599     pdump (pidl);
 600
 601     if (!strRet)
 602         return E_INVALIDARG;
 603
 604     pszPath = CoTaskMemAlloc((MAX_PATH +1) * sizeof(WCHAR));
 605     if (!pszPath)
 606         return E_OUTOFMEMORY;
 607
 608     pszPath[0] = 0;
 609
 610     if (!pidl->mkid.cb)
 611     {
 612         /* parsing name like ::{...} */
 613         pszPath[0] = ':';
 614         pszPath[1] = ':';
 615         SHELL32_GUIDToStringW(&CLSID_MyComputer, &pszPath[2]);
 616     }
 617     else if (_ILIsPidlSimple(pidl))
 618     {
 619         /* take names of special folders only if its only this folder */
 620         if (_ILIsSpecialFolder(pidl))
 621         {
 622             GUID const *clsid;
 623
 624             clsid = _ILGetGUIDPointer (pidl);
 625             if (clsid)
 626             {
 627                 if (GET_SHGDN_FOR (dwFlags) & SHGDN_FORPARSING)
 628                 {
 629                     static const WCHAR clsidW[] =
 630                      { 'C','L','S','I','D','\\',0 };
 631                     static const WCHAR shellfolderW[] =
 632                      { '\\','s','h','e','l','l','f','o','l','d','e','r',0 };
 633                     static const WCHAR wantsForParsingW[] =
 634                      { 'W','a','n','t','s','F','o','r','P','a','r','s','i','n',
 635                      'g',0 };
 636                     int bWantsForParsing = FALSE;
 637                     WCHAR szRegPath[100];
 638                     LONG r;
 639
 640                     /*
 641                      * We can only get a filesystem path from a shellfolder
 642                      * if the value WantsFORPARSING exists in
 643                      *      CLSID\\{...}\\shellfolder
 644                      * exception: the MyComputer folder has this keys not
 645                      *            but like any filesystem backed
 646                      *            folder it needs these behaviour
 647                      *
 648                      * Get the "WantsFORPARSING" flag from the registry
 649                      */
 650
 651                     lstrcpyW (szRegPath, clsidW);
 652                     SHELL32_GUIDToStringW (clsid, &szRegPath[6]);
 653                     lstrcatW (szRegPath, shellfolderW);
 654                     r = SHGetValueW (HKEY_CLASSES_ROOT, szRegPath,
 655                                      wantsForParsingW, NULL, NULL, NULL);
 656                     if (r == ERROR_SUCCESS)
 657                         bWantsForParsing = TRUE;
 658
 659                     if ((GET_SHGDN_RELATION (dwFlags) == SHGDN_NORMAL) &&
 660                         bWantsForParsing)
 661                     {
 662                         /*
 663                          * We need the filesystem path to the destination folder
 664                          * Only the folder itself can know it
 665                          */
 666                         hr = SHELL32_GetDisplayNameOfChild (iface, pidl,
 667                                                 dwFlags, pszPath, MAX_PATH);
 668                     }
 669                     else
 670                     {
 671                         LPWSTR p = pszPath;
 672
 673                         /* parsing name like ::{...} */
 674                         p[0] = ':';
 675                         p[1] = ':';
 676                         p += 2;
 677                         p += SHELL32_GUIDToStringW(&CLSID_MyComputer, p);
 678
 679                         /* \:: */
 680                         p[0] = '\\';
 681                         p[1] = ':';
 682                         p[2] = ':';
 683                         p += 3;
 684                         SHELL32_GUIDToStringW(clsid, p);
 685                     }
 686                 }
 687                 else
 688                 {
 689                     /* user friendly name */
 690                     HCR_GetClassNameW (clsid, pszPath, MAX_PATH);
 691                 }
 692             }
 693             else
 694             {
 695                 /* append my own path */
 696                 _ILSimpleGetTextW (pidl, pszPath, MAX_PATH);
 697             }
 698         }
 699         else if (_ILIsDrive(pidl))
 700         {
 701             _ILSimpleGetTextW (pidl, pszPath, MAX_PATH);    /* append my own path */
 702
 703             /* long view "lw_name (C:)" */
 704             if (!(dwFlags & SHGDN_FORPARSING))
 705             {
 706                 DWORD dwVolumeSerialNumber, dwMaximumComponetLength, dwFileSystemFlags;
 707                 WCHAR wszDrive[18] = {0};
 708                 static const WCHAR wszOpenBracket[] = {' ','(',0};
 709                 static const WCHAR wszCloseBracket[] = {')',0};
 710
 711                 GetVolumeInformationW (pszPath, wszDrive,
 712                            sizeof(wszDrive)/sizeof(wszDrive[0]) - 6,
 713                            &dwVolumeSerialNumber,
 714                            &dwMaximumComponetLength, &dwFileSystemFlags, NULL, 0);
 715                 strcatW (wszDrive, wszOpenBracket);
 716                 lstrcpynW (wszDrive + strlenW(wszDrive), pszPath, 3);
 717                 strcatW (wszDrive, wszCloseBracket);
 718                 strcpyW (pszPath, wszDrive);
 719             }
 720         }
 721         else
 722         {
 723             /* Neither a shell namespace extension nor a drive letter. */
 724             ERR("Wrong pidl type\n");
 725             CoTaskMemFree(pszPath);
 726             return E_INVALIDARG;
 727         }
 728     }
 729     else
 730     {
 731         /* Complex pidl. Let the child folder do the work */
 732         hr = SHELL32_GetDisplayNameOfChild(iface, pidl, dwFlags, pszPath, MAX_PATH);
 733     }
 734
 735     if (SUCCEEDED (hr))
 736     {
 737         /* Win9x always returns ANSI strings, NT always returns Unicode strings */
 738         if (GetVersion() & 0x80000000)
 739         {
 740             strRet->uType = STRRET_CSTR;
 741             if (!WideCharToMultiByte(CP_ACP, 0, pszPath, -1, strRet->u.cStr, MAX_PATH,
 742                     NULL, NULL))
 743                 strRet->u.cStr[0] = '\0';
 744             CoTaskMemFree(pszPath);
 745         }
 746         else
 747         {
 748             strRet->uType = STRRET_WSTR;
 749             strRet->u.pOleStr = pszPath;
 750         }
 751     }
 752     else
 753         CoTaskMemFree(pszPath);
 754
 755     TRACE ("-- (%p)->(%s)\n", This, strRet->uType == STRRET_CSTR ? strRet->u.cStr : debugstr_w(strRet->u.pOleStr));
 756     return hr;
 757 }
 758
 759 /**************************************************************************
 760 *  ISF_MyComputer_fnSetNameOf
 761 *  Changes the name of a file object or subfolder, possibly changing its item
 762 *  identifier in the process.
 763 *
 764 * PARAMETERS
 765 *  hwndOwner  [in]   Owner window for output
 766 *  pidl       [in]   simple pidl of item to change
 767 *  lpszName   [in]   the items new display name
 768 *  dwFlags    [in]   SHGNO formatting flags
 769 *  ppidlOut   [out]  simple pidl returned
 770 */
 771 static HRESULT WINAPI ISF_MyComputer_fnSetNameOf (
 772                IShellFolder2 * iface, HWND hwndOwner, LPCITEMIDLIST pidl,
 773                LPCOLESTR lpName, DWORD dwFlags, LPITEMIDLIST * pPidlOut)
 774 {
 775     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 776     FIXME ("(%p)->(%p,pidl=%p,%s,%u,%p)\n", This,
 777            hwndOwner, pidl, debugstr_w (lpName), dwFlags, pPidlOut);
 778     return E_FAIL;
 779 }
 780
 781 static HRESULT WINAPI ISF_MyComputer_fnGetDefaultSearchGUID (
 782                IShellFolder2 * iface, GUID * pguid)
 783 {
 784     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 785     FIXME ("(%p)\n", This);
 786     return E_NOTIMPL;
 787 }
 788 static HRESULT WINAPI ISF_MyComputer_fnEnumSearches (
 789                IShellFolder2 * iface, IEnumExtraSearch ** ppenum)
 790 {
 791     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 792     FIXME ("(%p)\n", This);
 793     return E_NOTIMPL;
 794 }
 795 static HRESULT WINAPI ISF_MyComputer_fnGetDefaultColumn (
 796                IShellFolder2 *iface, DWORD dwRes, ULONG *pSort, ULONG *pDisplay)
 797 {
 798     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 799
 800     TRACE ("(%p)\n", This);
 801
 802     if (pSort)
 803          *pSort = 0;
 804     if (pDisplay)
 805         *pDisplay = 0;
 806     return S_OK;
 807 }
 808 static HRESULT WINAPI ISF_MyComputer_fnGetDefaultColumnState (
 809                IShellFolder2 * iface, UINT iColumn, DWORD * pcsFlags)
 810 {
 811     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 812
 813     TRACE ("(%p)\n", This);
 814
 815     if (!pcsFlags || iColumn >= MYCOMPUTERSHELLVIEWCOLUMNS)
 816         return E_INVALIDARG;
 817     *pcsFlags = MyComputerSFHeader[iColumn].pcsFlags;
 818     return S_OK;
 819 }
 820
 821 static HRESULT WINAPI ISF_MyComputer_fnGetDetailsEx (IShellFolder2 * iface,
 822                LPCITEMIDLIST pidl, const SHCOLUMNID * pscid, VARIANT * pv)
 823 {
 824     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 825     FIXME ("(%p)\n", This);
 826     return E_NOTIMPL;
 827 }
 828
 829 /* FIXME: drive size >4GB is rolling over */
 830 static HRESULT WINAPI ISF_MyComputer_fnGetDetailsOf (IShellFolder2 * iface,
 831                LPCITEMIDLIST pidl, UINT iColumn, SHELLDETAILS * psd)
 832 {
 833     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 834     HRESULT hr;
 835
 836     TRACE ("(%p)->(%p %i %p)\n", This, pidl, iColumn, psd);
 837
 838     if (!psd || iColumn >= MYCOMPUTERSHELLVIEWCOLUMNS)
 839         return E_INVALIDARG;
 840
 841     if (!pidl)
 842     {
 843         psd->fmt = MyComputerSFHeader[iColumn].fmt;
 844         psd->cxChar = MyComputerSFHeader[iColumn].cxChar;
 845         psd->str.uType = STRRET_CSTR;
 846         LoadStringA (shell32_hInstance, MyComputerSFHeader[iColumn].colnameid,
 847                      psd->str.u.cStr, MAX_PATH);
 848         return S_OK;
 849     }
 850     else
 851     {
 852         char szPath[MAX_PATH];
 853         ULARGE_INTEGER ulBytes;
 854
 855         psd->str.u.cStr[0] = 0x00;
 856         psd->str.uType = STRRET_CSTR;
 857         switch (iColumn)
 858         {
 859         case 0:        /* name */
 860             hr = IShellFolder_GetDisplayNameOf (iface, pidl,
 861                        SHGDN_NORMAL | SHGDN_INFOLDER, &psd->str);
 862             break;
 863         case 1:        /* type */
 864             _ILGetFileType (pidl, psd->str.u.cStr, MAX_PATH);
 865             break;
 866         case 2:        /* total size */
 867             if (_ILIsDrive (pidl))
 868             {
 869                 _ILSimpleGetText (pidl, szPath, MAX_PATH);
 870                 GetDiskFreeSpaceExA (szPath, NULL, &ulBytes, NULL);
 871                 StrFormatByteSizeA (ulBytes.u.LowPart, psd->str.u.cStr, MAX_PATH);
 872             }
 873             break;
 874         case 3:        /* free size */
 875             if (_ILIsDrive (pidl))
 876             {
 877                 _ILSimpleGetText (pidl, szPath, MAX_PATH);
 878                 GetDiskFreeSpaceExA (szPath, &ulBytes, NULL, NULL);
 879                 StrFormatByteSizeA (ulBytes.u.LowPart, psd->str.u.cStr, MAX_PATH);
 880             }
 881             break;
 882         }
 883         hr = S_OK;
 884     }
 885
 886     return hr;
 887 }
 888
 889 static HRESULT WINAPI ISF_MyComputer_fnMapColumnToSCID (
 890                IShellFolder2 * iface, UINT column, SHCOLUMNID * pscid)
 891 {
 892     IGenericSFImpl *This = (IGenericSFImpl *)iface;
 893     FIXME ("(%p)\n", This);
 894     return E_NOTIMPL;
 895 }
 896
 897 static const IShellFolder2Vtbl vt_ShellFolder2 =
 898 {
 899     ISF_MyComputer_fnQueryInterface,
 900     ISF_MyComputer_fnAddRef,
 901     ISF_MyComputer_fnRelease,
 902     ISF_MyComputer_fnParseDisplayName,
 903     ISF_MyComputer_fnEnumObjects,
 904     ISF_MyComputer_fnBindToObject,
 905     ISF_MyComputer_fnBindToStorage,
 906     ISF_MyComputer_fnCompareIDs,
 907     ISF_MyComputer_fnCreateViewObject,
 908     ISF_MyComputer_fnGetAttributesOf,
 909     ISF_MyComputer_fnGetUIObjectOf,
 910     ISF_MyComputer_fnGetDisplayNameOf,
 911     ISF_MyComputer_fnSetNameOf,
 912     /* ShellFolder2 */
 913     ISF_MyComputer_fnGetDefaultSearchGUID,
 914     ISF_MyComputer_fnEnumSearches,
 915     ISF_MyComputer_fnGetDefaultColumn,
 916     ISF_MyComputer_fnGetDefaultColumnState,
 917     ISF_MyComputer_fnGetDetailsEx,
 918     ISF_MyComputer_fnGetDetailsOf,
 919     ISF_MyComputer_fnMapColumnToSCID
 920 };
 921
 922 /************************************************************************
 923  *    IMCFldr_PersistFolder2_QueryInterface
 924  */
 925 static HRESULT WINAPI IMCFldr_PersistFolder2_QueryInterface (
 926                IPersistFolder2 * iface, REFIID iid, LPVOID * ppvObj)
 927 {
 928     IGenericSFImpl *This = impl_from_IPersistFolder2(iface);
 929
 930     TRACE ("(%p)\n", This);
 931
 932     return IUnknown_QueryInterface (_IUnknown_ (This), iid, ppvObj);
 933 }
 934
 935 /************************************************************************
 936  *    IMCFldr_PersistFolder2_AddRef
 937  */
 938 static ULONG WINAPI IMCFldr_PersistFolder2_AddRef (IPersistFolder2 * iface)
 939 {
 940     IGenericSFImpl *This = impl_from_IPersistFolder2(iface);
 941
 942     TRACE ("(%p)->(count=%u)\n", This, This->ref);
 943
 944     return IUnknown_AddRef (_IUnknown_ (This));
 945 }
 946
 947 /************************************************************************
 948  *    ISFPersistFolder_Release
 949  */
 950 static ULONG WINAPI IMCFldr_PersistFolder2_Release (IPersistFolder2 * iface)
 951 {
 952     IGenericSFImpl *This = impl_from_IPersistFolder2(iface);
 953
 954     TRACE ("(%p)->(count=%u)\n", This, This->ref);
 955
 956     return IUnknown_Release (_IUnknown_ (This));
 957 }
 958
 959 /************************************************************************
 960  *    IMCFldr_PersistFolder2_GetClassID
 961  */
 962 static HRESULT WINAPI IMCFldr_PersistFolder2_GetClassID (
 963                IPersistFolder2 * iface, CLSID * lpClassId)
 964 {
 965     IGenericSFImpl *This = impl_from_IPersistFolder2(iface);
 966
 967     TRACE ("(%p)\n", This);
 968
 969     if (!lpClassId)
 970     return E_POINTER;
 971     *lpClassId = CLSID_MyComputer;
 972
 973     return S_OK;
 974 }
 975
 976 /************************************************************************
 977  *    IMCFldr_PersistFolder2_Initialize
 978  *
 979  * NOTES: it makes no sense to change the pidl
 980  */
 981 static HRESULT WINAPI IMCFldr_PersistFolder2_Initialize (
 982                IPersistFolder2 * iface, LPCITEMIDLIST pidl)
 983 {
 984     IGenericSFImpl *This = impl_from_IPersistFolder2(iface);
 985     TRACE ("(%p)->(%p)\n", This, pidl);
 986     return E_NOTIMPL;
 987 }
 988
 989 /**************************************************************************
 990  *    IPersistFolder2_fnGetCurFolder
 991  */
 992 static HRESULT WINAPI IMCFldr_PersistFolder2_GetCurFolder (
 993                IPersistFolder2 * iface, LPITEMIDLIST * pidl)
 994 {
 995     IGenericSFImpl *This = impl_from_IPersistFolder2(iface);
 996
 997     TRACE ("(%p)->(%p)\n", This, pidl);
 998
 999     if (!pidl)
1000         return E_POINTER;
1001     *pidl = ILClone (This->pidlRoot);
1002     return S_OK;
1003 }
1004
1005 static const IPersistFolder2Vtbl vt_PersistFolder2 =
1006 {
1007     IMCFldr_PersistFolder2_QueryInterface,
1008     IMCFldr_PersistFolder2_AddRef,
1009     IMCFldr_PersistFolder2_Release,
1010     IMCFldr_PersistFolder2_GetClassID,
1011     IMCFldr_PersistFolder2_Initialize,
1012     IMCFldr_PersistFolder2_GetCurFolder
1013 };