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 "undocshell.h"
  43 #include "shell32_main.h"
  44 #include "shresdef.h"
  45 #include "shlwapi.h"
  46 #include "wine/debug.h"
  47 #include "debughlp.h"
  48 #include "shfldr.h"
  49
  50 WINE_DEFAULT_DEBUG_CHANNEL (shell);
  51
  52 /***********************************************************************
  53 *   IShellFolder implementation
  54 */
  55
  56 typedef struct {
  57     IShellFolder2   IShellFolder2_iface;
  58     IPersistFolder2 IPersistFolder2_iface;
  59     LONG            ref;
  60
  61     /* both paths are parsible from the desktop */
  62     LPITEMIDLIST pidlRoot;    /* absolute pidl */
  63 } IMyComputerFolderImpl;
  64
  65 static const IShellFolder2Vtbl vt_ShellFolder2;
  66 static const IPersistFolder2Vtbl vt_PersistFolder2;
  67
  68 static inline IMyComputerFolderImpl *impl_from_IShellFolder2(IShellFolder2 *iface)
  69 {
  70     return CONTAINING_RECORD(iface, IMyComputerFolderImpl, IShellFolder2_iface);
  71 }
  72
  73 static inline IMyComputerFolderImpl *impl_from_IPersistFolder2(IPersistFolder2 *iface)
  74 {
  75     return CONTAINING_RECORD(iface, IMyComputerFolderImpl, IPersistFolder2_iface);
  76 }
  77
  78
  79 /***********************************************************************
  80 *   IShellFolder [MyComputer] implementation
  81 */
  82
  83 static const shvheader mycomputer_header[] = {
  84     {IDS_SHV_COLUMN1, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 15},
  85     {IDS_SHV_COLUMN3, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 10},
  86     {IDS_SHV_COLUMN6, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 10},
  87     {IDS_SHV_COLUMN7, SHCOLSTATE_TYPE_STR | SHCOLSTATE_ONBYDEFAULT, LVCFMT_RIGHT, 10},
  88 };
  89
  90 #define MYCOMPUTERSHELLVIEWCOLUMNS sizeof(mycomputer_header)/sizeof(shvheader)
  91
  92 /**************************************************************************
  93 *    ISF_MyComputer_Constructor
  94 */
  95 HRESULT WINAPI ISF_MyComputer_Constructor (IUnknown * pUnkOuter, REFIID riid, LPVOID * ppv)
  96 {
  97     IMyComputerFolderImpl *sf;
  98
  99     TRACE ("unkOut=%p %s\n", pUnkOuter, shdebugstr_guid (riid));
 100
 101     if (!ppv)
 102         return E_POINTER;
 103     if (pUnkOuter)
 104         return CLASS_E_NOAGGREGATION;
 105
 106     sf = LocalAlloc (LMEM_ZEROINIT, sizeof (IMyComputerFolderImpl));
 107     if (!sf)
 108         return E_OUTOFMEMORY;
 109
 110     sf->ref = 0;
 111     sf->IShellFolder2_iface.lpVtbl = &vt_ShellFolder2;
 112     sf->IPersistFolder2_iface.lpVtbl = &vt_PersistFolder2;
 113     sf->pidlRoot = _ILCreateMyComputer ();    /* my qualified pidl */
 114
 115     if (FAILED (IUnknown_QueryInterface (&sf->IShellFolder2_iface, riid, ppv)))
 116     {
 117         IUnknown_Release (&sf->IShellFolder2_iface);
 118         return E_NOINTERFACE;
 119     }
 120
 121     TRACE ("--(%p)\n", sf);
 122     return S_OK;
 123 }
 124
 125 /**************************************************************************
 126  *    ISF_MyComputer_fnQueryInterface
 127  *
 128  * NOTES supports not IPersist/IPersistFolder
 129  */
 130 static HRESULT WINAPI ISF_MyComputer_fnQueryInterface (IShellFolder2 *iface,
 131                REFIID riid, LPVOID *ppvObj)
 132 {
 133     IMyComputerFolderImpl *This = impl_from_IShellFolder2(iface);
 134
 135     TRACE ("(%p)->(%s,%p)\n", This, shdebugstr_guid (riid), ppvObj);
 136
 137     *ppvObj = NULL;
 138
 139     if (IsEqualIID (riid, &IID_IUnknown) ||
 140         IsEqualIID (riid, &IID_IShellFolder) ||
 141         IsEqualIID (riid, &IID_IShellFolder2))
 142     {
 143         *ppvObj = This;
 144     }
 145     else if (IsEqualIID (riid, &IID_IPersist) ||
 146              IsEqualIID (riid, &IID_IPersistFolder) ||
 147              IsEqualIID (riid, &IID_IPersistFolder2))
 148     {
 149         *ppvObj = &This->IPersistFolder2_iface;
 150     }
 151
 152     if (*ppvObj)
 153     {
 154         IUnknown_AddRef ((IUnknown *) (*ppvObj));
 155         TRACE ("-- Interface: (%p)->(%p)\n", ppvObj, *ppvObj);
 156         return S_OK;
 157     }
 158     TRACE ("-- Interface: E_NOINTERFACE\n");
 159     return E_NOINTERFACE;
 160 }
 161
 162 static ULONG WINAPI ISF_MyComputer_fnAddRef (IShellFolder2 * iface)
 163 {
 164     IMyComputerFolderImpl *This = impl_from_IShellFolder2(iface);
 165     ULONG refCount = InterlockedIncrement(&This->ref);
 166
 167     TRACE ("(%p)->(count=%u)\n", This, refCount - 1);
 168
 169     return refCount;
 170 }
 171
 172 static ULONG WINAPI ISF_MyComputer_fnRelease (IShellFolder2 * iface)
 173 {
 174     IMyComputerFolderImpl *This = impl_from_IShellFolder2(iface);
 175     ULONG refCount = InterlockedDecrement(&This->ref);
 176
 177     TRACE ("(%p)->(count=%u)\n", This, refCount + 1);
 178
 179     if (!refCount)
 180     {
 181         TRACE ("-- destroying IShellFolder(%p)\n", This);
 182         SHFree (This->pidlRoot);
 183         LocalFree (This);
 184     }
 185     return refCount;
 186 }
 187
 188 /**************************************************************************
 189 *    ISF_MyComputer_fnParseDisplayName
 190 */
 191 static HRESULT WINAPI ISF_MyComputer_fnParseDisplayName (IShellFolder2 *iface,
 192                HWND hwndOwner, LPBC pbc, LPOLESTR lpszDisplayName,
 193                DWORD * pchEaten, LPITEMIDLIST * ppidl, DWORD * pdwAttributes)
 194 {
 195     IMyComputerFolderImpl *This = impl_from_IShellFolder2(iface);
 196     HRESULT hr = E_INVALIDARG;
 197     LPCWSTR szNext = NULL;
 198     WCHAR szElement[MAX_PATH];
 199     LPITEMIDLIST pidlTemp = NULL;
 200     CLSID clsid;
 201
 202     TRACE("(%p)->(HWND=%p,%p,%p=%s,%p,pidl=%p,%p)\n", This,
 203           hwndOwner, pbc, lpszDisplayName, debugstr_w (lpszDisplayName),
 204           pchEaten, ppidl, pdwAttributes);
 205
 206     *ppidl = 0;
 207     if (pchEaten)
 208         *pchEaten = 0;        /* strange but like the original */
 209
 210     /* handle CLSID paths */
 211     if (lpszDisplayName[0] == ':' && lpszDisplayName[1] == ':')
 212     {
 213         szNext = GetNextElementW (lpszDisplayName, szElement, MAX_PATH);
 214         TRACE ("-- element: %s\n", debugstr_w (szElement));
 215         SHCLSIDFromStringW (szElement + 2, &clsid);
 216         pidlTemp = _ILCreateGuid (PT_GUID, &clsid);
 217     }
 218     /* do we have an absolute path name ? */
 219     else if (PathGetDriveNumberW (lpszDisplayName) >= 0 &&
 220               lpszDisplayName[2] == (WCHAR) '\\')
 221     {
 222         szNext = GetNextElementW (lpszDisplayName, szElement, MAX_PATH);
 223         /* make drive letter uppercase to enable PIDL comparison */
 224         szElement[0] = toupper(szElement[0]);
 225         pidlTemp = _ILCreateDrive (szElement);
 226     }
 227
 228     if (szNext && *szNext)
 229     {
 230         hr = SHELL32_ParseNextElement (iface, hwndOwner, pbc, &pidlTemp,
 231                               (LPOLESTR) szNext, pchEaten, pdwAttributes);
 232     }
 233     else
 234     {
 235         if (pdwAttributes && *pdwAttributes)
 236             SHELL32_GetItemAttributes ((IShellFolder*)&This->IShellFolder2_iface, pidlTemp,
 237                     pdwAttributes);
 238         hr = S_OK;
 239     }
 240
 241     *ppidl = pidlTemp;
 242
 243     TRACE ("(%p)->(-- ret=0x%08x)\n", This, hr);
 244
 245     return hr;
 246 }
 247
 248 /* retrieve a map of drives that should be displayed */
 249 static DWORD get_drive_map(void)
 250 {
 251     static const WCHAR policiesW[] = {'S','o','f','t','w','a','r','e','\\',
 252                                       'M','i','c','r','o','s','o','f','t','\\',
 253                                       'W','i','n','d','o','w','s','\\',
 254                                       'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 255                                       'P','o','l','i','c','i','e','s','\\',
 256                                       'E','x','p','l','o','r','e','r',0};
 257     static const WCHAR nodrivesW[] = {'N','o','D','r','i','v','e','s',0};
 258     static DWORD drive_mask, init_done;
 259
 260     if (!init_done)
 261     {
 262         DWORD type, size, data, mask = 0;
 263         HKEY hkey;
 264
 265         if (!RegOpenKeyW( HKEY_LOCAL_MACHINE, policiesW, &hkey ))
 266         {
 267             size = sizeof(data);
 268             if (!RegQueryValueExW( hkey, nodrivesW, NULL, &type, (LPBYTE)&data, &size ) && type == REG_DWORD)
 269                 mask |= data;
 270             RegCloseKey( hkey );
 271         }
 272         if (!RegOpenKeyW( HKEY_CURRENT_USER, 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         drive_mask = mask;
 280         init_done = 1;
 281     }
 282
 283     return GetLogicalDrives() & ~drive_mask;
 284 }
 285
 286 /**************************************************************************
 287  *  CreateMyCompEnumList()
 288  */
 289 static const WCHAR MyComputer_NameSpaceW[] = { 'S','O','F','T','W','A','R','E',
 290  '\\','M','i','c','r','o','s','o','f','t','\\','W','i','n','d','o','w','s','\\',
 291  'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\','E','x','p','l',
 292  'o','r','e','r','\\','M','y','C','o','m','p','u','t','e','r','\\','N','a','m',
 293  'e','s','p','a','c','e','\0' };
 294
 295 static BOOL CreateMyCompEnumList(IEnumIDListImpl *list, DWORD dwFlags)
 296 {
 297     BOOL ret = TRUE;
 298
 299     TRACE("(%p)->(flags=0x%08x)\n", list, dwFlags);
 300
 301     /* enumerate the folders */
 302     if (dwFlags & SHCONTF_FOLDERS)
 303     {
 304         WCHAR wszDriveName[] = {'A', ':', '\\', '\0'};
 305         DWORD dwDrivemap = get_drive_map();
 306         HKEY hkey;
 307         UINT i;
 308
 309         while (ret && wszDriveName[0]<='Z')
 310         {
 311             if(dwDrivemap & 0x00000001L)
 312                 ret = AddToEnumList(list, _ILCreateDrive(wszDriveName));
 313             wszDriveName[0]++;
 314             dwDrivemap = dwDrivemap >> 1;
 315         }
 316
 317         TRACE("-- (%p)-> enumerate (mycomputer shell extensions)\n",list);
 318         for (i=0; i<2; i++) {
 319             if (ret && !RegOpenKeyExW(i == 0 ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER,
 320                                       MyComputer_NameSpaceW, 0, KEY_READ, &hkey))
 321             {
 322                 WCHAR iid[50];
 323                 int i=0;
 324
 325                 while (ret)
 326                 {
 327                     DWORD size;
 328                     LONG r;
 329
 330                     size = sizeof(iid) / sizeof(iid[0]);
 331                     r = RegEnumKeyExW(hkey, i, iid, &size, 0, NULL, NULL, NULL);
 332                     if (ERROR_SUCCESS == r)
 333                     {
 334                         /* FIXME: shell extensions, shouldn't the type be
 335                          * PT_SHELLEXT? */
 336                         ret = AddToEnumList(list, _ILCreateGuidFromStrW(iid));
 337                         i++;
 338                     }
 339                     else if (ERROR_NO_MORE_ITEMS == r)
 340                         break;
 341                     else
 342                         ret = FALSE;
 343                 }
 344                 RegCloseKey(hkey);
 345             }
 346         }
 347     }
 348     return ret;
 349 }
 350
 351 /**************************************************************************
 352 *        ISF_MyComputer_fnEnumObjects
 353 */
 354 static HRESULT WINAPI ISF_MyComputer_fnEnumObjects (IShellFolder2 *iface,
 355                HWND hwndOwner, DWORD dwFlags, LPENUMIDLIST *ppEnumIDList)
 356 {
 357     IMyComputerFolderImpl *This = impl_from_IShellFolder2(iface);
 358     IEnumIDListImpl *list;
 359
 360     TRACE("(%p)->(HWND=%p flags=0x%08x pplist=%p)\n", This,
 361           hwndOwner, dwFlags, ppEnumIDList);
 362
 363     if (!(list = IEnumIDList_Constructor()))
 364         return E_OUTOFMEMORY;
 365     CreateMyCompEnumList(list, dwFlags);
 366     *ppEnumIDList = &list->IEnumIDList_iface;
 367
 368     TRACE ("-- (%p)->(new ID List: %p)\n", This, *ppEnumIDList);
 369
 370     return S_OK;
 371 }
 372
 373 /**************************************************************************
 374 *        ISF_MyComputer_fnBindToObject
 375 */
 376 static HRESULT WINAPI ISF_MyComputer_fnBindToObject (IShellFolder2 *iface,
 377                LPCITEMIDLIST pidl, LPBC pbcReserved, REFIID riid, LPVOID *ppvOut)
 378 {
 379     IMyComputerFolderImpl *This = impl_from_IShellFolder2(iface);
 380
 381     TRACE("(%p)->(pidl=%p,%p,%s,%p)\n", This,
 382           pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 383
 384     return SHELL32_BindToChild (This->pidlRoot, NULL, pidl, riid, ppvOut);
 385 }
 386
 387 /**************************************************************************
 388 *    ISF_MyComputer_fnBindToStorage
 389 */
 390 static HRESULT WINAPI ISF_MyComputer_fnBindToStorage (IShellFolder2 * iface,
 391                LPCITEMIDLIST pidl, LPBC pbcReserved, REFIID riid, LPVOID *ppvOut)
 392 {
 393     IMyComputerFolderImpl *This = impl_from_IShellFolder2(iface);
 394
 395     FIXME("(%p)->(pidl=%p,%p,%s,%p) stub\n", This,
 396           pidl, pbcReserved, shdebugstr_guid (riid), ppvOut);
 397
 398     *ppvOut = NULL;
 399     return E_NOTIMPL;
 400 }
 401
 402 /**************************************************************************
 403 *     ISF_MyComputer_fnCompareIDs
 404 */
 405
 406 static HRESULT WINAPI ISF_MyComputer_fnCompareIDs (IShellFolder2 *iface,
 407                LPARAM lParam, LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 408 {
 409     IMyComputerFolderImpl *This = impl_from_IShellFolder2(iface);
 410     HRESULT hr;
 411
 412     TRACE ("(%p)->(0x%08lx,pidl1=%p,pidl2=%p)\n", This, lParam, pidl1, pidl2);
 413     hr = SHELL32_CompareIDs ((IShellFolder*)&This->IShellFolder2_iface, lParam, pidl1, pidl2);
 414     TRACE ("-- 0x%08x\n", hr);
 415     return hr;
 416 }
 417
 418 /**************************************************************************
 419 *    ISF_MyComputer_fnCreateViewObject
 420 */
 421 static HRESULT WINAPI ISF_MyComputer_fnCreateViewObject (IShellFolder2 *iface,
 422                HWND hwndOwner, REFIID riid, LPVOID * ppvOut)
 423 {
 424     IMyComputerFolderImpl *This = impl_from_IShellFolder2(iface);
 425     LPSHELLVIEW pShellView;
 426     HRESULT hr = E_INVALIDARG;
 427
 428     TRACE("(%p)->(hwnd=%p,%s,%p)\n", This,
 429           hwndOwner, shdebugstr_guid (riid), ppvOut);
 430
 431     if (!ppvOut)
 432         return hr;
 433
 434     *ppvOut = NULL;
 435
 436     if (IsEqualIID (riid, &IID_IDropTarget))
 437     {
 438         WARN ("IDropTarget not implemented\n");
 439         hr = E_NOTIMPL;
 440     }
 441     else if (IsEqualIID (riid, &IID_IContextMenu))
 442     {
 443         WARN ("IContextMenu not implemented\n");
 444         hr = E_NOTIMPL;
 445     }
 446     else if (IsEqualIID (riid, &IID_IShellView))
 447     {
 448         pShellView = IShellView_Constructor ((IShellFolder *) iface);
 449         if (pShellView)
 450         {
 451             hr = IShellView_QueryInterface (pShellView, riid, ppvOut);
 452             IShellView_Release (pShellView);
 453         }
 454     }
 455     TRACE ("-- (%p)->(interface=%p)\n", This, ppvOut);
 456     return hr;
 457 }
 458
 459 /**************************************************************************
 460 *  ISF_MyComputer_fnGetAttributesOf
 461 */
 462 static HRESULT WINAPI ISF_MyComputer_fnGetAttributesOf (IShellFolder2 * iface,
 463                 UINT cidl, LPCITEMIDLIST * apidl, DWORD * rgfInOut)
 464 {
 465     IMyComputerFolderImpl *This = impl_from_IShellFolder2(iface);
 466     HRESULT hr = S_OK;
 467
 468     TRACE ("(%p)->(cidl=%d apidl=%p mask=%p (0x%08x))\n",
 469            This, cidl, apidl, rgfInOut, rgfInOut ? *rgfInOut : 0);
 470
 471     if (!rgfInOut)
 472         return E_INVALIDARG;
 473     if (cidl && !apidl)
 474         return E_INVALIDARG;
 475
 476     if (*rgfInOut == 0)
 477         *rgfInOut = ~0;
 478
 479     if(cidl == 0){
 480         IShellFolder *psfParent = NULL;
 481         LPCITEMIDLIST rpidl = NULL;
 482
 483         hr = SHBindToParent(This->pidlRoot, &IID_IShellFolder, (LPVOID*)&psfParent, &rpidl);
 484         if(SUCCEEDED(hr)) {
 485             SHELL32_GetItemAttributes (psfParent, rpidl, rgfInOut);
 486             IShellFolder_Release(psfParent);
 487         }
 488     } else {
 489         while (cidl > 0 && *apidl) {
 490             pdump (*apidl);
 491             SHELL32_GetItemAttributes ((IShellFolder*)&This->IShellFolder2_iface, *apidl, rgfInOut);
 492             apidl++;
 493             cidl--;
 494         }
 495     }
 496     /* make sure SFGAO_VALIDATE is cleared, some apps depend on that */
 497     *rgfInOut &= ~SFGAO_VALIDATE;
 498
 499     TRACE ("-- result=0x%08x\n", *rgfInOut);
 500     return hr;
 501 }
 502
 503 /**************************************************************************
 504 *    ISF_MyComputer_fnGetUIObjectOf
 505 *
 506 * PARAMETERS
 507 *  hwndOwner [in]  Parent window for any output
 508 *  cidl      [in]  array size
 509 *  apidl     [in]  simple pidl array
 510 *  riid      [in]  Requested Interface
 511 *  prgfInOut [   ] reserved
 512 *  ppvObject [out] Resulting Interface
 513 *
 514 */
 515 static HRESULT WINAPI ISF_MyComputer_fnGetUIObjectOf (IShellFolder2 * iface,
 516                 HWND hwndOwner, UINT cidl, LPCITEMIDLIST * apidl, REFIID riid,
 517                 UINT * prgfInOut, LPVOID * ppvOut)
 518 {
 519     IMyComputerFolderImpl *This = impl_from_IShellFolder2(iface);
 520
 521     LPITEMIDLIST pidl;
 522     IUnknown *pObj = NULL;
 523     HRESULT hr = E_INVALIDARG;
 524
 525     TRACE("(%p)->(%p,%u,apidl=%p,%s,%p,%p)\n", This,
 526           hwndOwner, cidl, apidl, shdebugstr_guid (riid), prgfInOut, ppvOut);
 527
 528     if (!ppvOut)
 529         return hr;
 530
 531     *ppvOut = NULL;
 532
 533     if (IsEqualIID (riid, &IID_IContextMenu) && (cidl >= 1))
 534     {
 535         pObj = (LPUNKNOWN) ItemMenu_Constructor ((IShellFolder *) iface,
 536                                               This->pidlRoot, apidl, cidl);
 537         hr = S_OK;
 538     }
 539     else if (IsEqualIID (riid, &IID_IDataObject) && (cidl >= 1))
 540     {
 541         pObj = (LPUNKNOWN) IDataObject_Constructor (hwndOwner,
 542                                               This->pidlRoot, apidl, cidl);
 543         hr = S_OK;
 544     }
 545     else if (IsEqualIID (riid, &IID_IExtractIconA) && (cidl == 1))
 546     {
 547         pidl = ILCombine (This->pidlRoot, apidl[0]);
 548         pObj = (LPUNKNOWN) IExtractIconA_Constructor (pidl);
 549         SHFree (pidl);
 550         hr = S_OK;
 551     }
 552     else if (IsEqualIID (riid, &IID_IExtractIconW) && (cidl == 1))
 553     {
 554         pidl = ILCombine (This->pidlRoot, apidl[0]);
 555         pObj = (LPUNKNOWN) IExtractIconW_Constructor (pidl);
 556         SHFree (pidl);
 557         hr = S_OK;
 558     }
 559     else if (IsEqualIID (riid, &IID_IDropTarget) && (cidl >= 1))
 560     {
 561         hr = IShellFolder_QueryInterface (iface, &IID_IDropTarget,
 562                                           (LPVOID *) &pObj);
 563     }
 564     else if ((IsEqualIID(riid,&IID_IShellLinkW) ||
 565               IsEqualIID(riid,&IID_IShellLinkA)) && (cidl == 1))
 566     {
 567         pidl = ILCombine (This->pidlRoot, apidl[0]);
 568         hr = IShellLink_ConstructFromFile(NULL, riid, pidl, (LPVOID*) &pObj);
 569         SHFree (pidl);
 570     }
 571     else
 572         hr = E_NOINTERFACE;
 573
 574     if (SUCCEEDED(hr) && !pObj)
 575         hr = E_OUTOFMEMORY;
 576
 577     *ppvOut = pObj;
 578     TRACE ("(%p)->hr=0x%08x\n", This, hr);
 579     return hr;
 580 }
 581
 582 /**************************************************************************
 583 *    ISF_MyComputer_fnGetDisplayNameOf
 584 */
 585 static HRESULT WINAPI ISF_MyComputer_fnGetDisplayNameOf (IShellFolder2 *iface,
 586                LPCITEMIDLIST pidl, DWORD dwFlags, LPSTRRET strRet)
 587 {
 588     IMyComputerFolderImpl *This = impl_from_IShellFolder2(iface);
 589
 590     LPWSTR pszPath;
 591     HRESULT hr = S_OK;
 592
 593     TRACE ("(%p)->(pidl=%p,0x%08x,%p)\n", This, pidl, dwFlags, strRet);
 594     pdump (pidl);
 595
 596     if (!strRet)
 597         return E_INVALIDARG;
 598
 599     pszPath = CoTaskMemAlloc((MAX_PATH +1) * sizeof(WCHAR));
 600     if (!pszPath)
 601         return E_OUTOFMEMORY;
 602
 603     pszPath[0] = 0;
 604
 605     if (!pidl->mkid.cb)
 606     {
 607         /* parsing name like ::{...} */
 608         pszPath[0] = ':';
 609         pszPath[1] = ':';
 610         SHELL32_GUIDToStringW(&CLSID_MyComputer, &pszPath[2]);
 611     }
 612     else if (_ILIsPidlSimple(pidl))
 613     {
 614         /* take names of special folders only if its only this folder */
 615         if (_ILIsSpecialFolder(pidl))
 616         {
 617             GUID const *clsid;
 618
 619             clsid = _ILGetGUIDPointer (pidl);
 620             if (clsid)
 621             {
 622                 if (GET_SHGDN_FOR (dwFlags) & SHGDN_FORPARSING)
 623                 {
 624                     static const WCHAR clsidW[] =
 625                      { 'C','L','S','I','D','\\',0 };
 626                     static const WCHAR shellfolderW[] =
 627                      { '\\','s','h','e','l','l','f','o','l','d','e','r',0 };
 628                     static const WCHAR wantsForParsingW[] =
 629                      { 'W','a','n','t','s','F','o','r','P','a','r','s','i','n',
 630                      'g',0 };
 631                     int bWantsForParsing = FALSE;
 632                     WCHAR szRegPath[100];
 633                     LONG r;
 634
 635                     /*
 636                      * We can only get a filesystem path from a shellfolder
 637                      * if the value WantsFORPARSING exists in
 638                      *      CLSID\\{...}\\shellfolder
 639                      * exception: the MyComputer folder has this keys not
 640                      *            but like any filesystem backed
 641                      *            folder it needs these behaviour
 642                      *
 643                      * Get the "WantsFORPARSING" flag from the registry
 644                      */
 645
 646                     lstrcpyW (szRegPath, clsidW);
 647                     SHELL32_GUIDToStringW (clsid, &szRegPath[6]);
 648                     lstrcatW (szRegPath, shellfolderW);
 649                     r = SHGetValueW (HKEY_CLASSES_ROOT, szRegPath,
 650                                      wantsForParsingW, NULL, NULL, NULL);
 651                     if (r == ERROR_SUCCESS)
 652                         bWantsForParsing = TRUE;
 653
 654                     if ((GET_SHGDN_RELATION (dwFlags) == SHGDN_NORMAL) &&
 655                         bWantsForParsing)
 656                     {
 657                         /*
 658                          * We need the filesystem path to the destination folder
 659                          * Only the folder itself can know it
 660                          */
 661                         hr = SHELL32_GetDisplayNameOfChild (iface, pidl,
 662                                                 dwFlags, pszPath, MAX_PATH);
 663                     }
 664                     else
 665                     {
 666                         LPWSTR p = pszPath;
 667
 668                         /* parsing name like ::{...} */
 669                         p[0] = ':';
 670                         p[1] = ':';
 671                         p += 2;
 672                         p += SHELL32_GUIDToStringW(&CLSID_MyComputer, p);
 673
 674                         /* \:: */
 675                         p[0] = '\\';
 676                         p[1] = ':';
 677                         p[2] = ':';
 678                         p += 3;
 679                         SHELL32_GUIDToStringW(clsid, p);
 680                     }
 681                 }
 682                 else
 683                 {
 684                     /* user friendly name */
 685                     HCR_GetClassNameW (clsid, pszPath, MAX_PATH);
 686                 }
 687             }
 688             else
 689             {
 690                 /* append my own path */
 691                 _ILSimpleGetTextW (pidl, pszPath, MAX_PATH);
 692             }
 693         }
 694         else if (_ILIsDrive(pidl))
 695         {
 696             _ILSimpleGetTextW (pidl, pszPath, MAX_PATH);    /* append my own path */
 697
 698             /* long view "lw_name (C:)" */
 699             if (!(dwFlags & SHGDN_FORPARSING))
 700             {
 701                 DWORD dwVolumeSerialNumber, dwMaximumComponetLength, dwFileSystemFlags;
 702                 WCHAR wszDrive[18] = {0};
 703                 static const WCHAR wszOpenBracket[] = {' ','(',0};
 704                 static const WCHAR wszCloseBracket[] = {')',0};
 705
 706                 GetVolumeInformationW (pszPath, wszDrive,
 707                            sizeof(wszDrive)/sizeof(wszDrive[0]) - 6,
 708                            &dwVolumeSerialNumber,
 709                            &dwMaximumComponetLength, &dwFileSystemFlags, NULL, 0);
 710                 strcatW (wszDrive, wszOpenBracket);
 711                 lstrcpynW (wszDrive + strlenW(wszDrive), pszPath, 3);
 712                 strcatW (wszDrive, wszCloseBracket);
 713                 strcpyW (pszPath, wszDrive);
 714             }
 715         }
 716         else
 717         {
 718             /* Neither a shell namespace extension nor a drive letter. */
 719             ERR("Wrong pidl type\n");
 720             CoTaskMemFree(pszPath);
 721             return E_INVALIDARG;
 722         }
 723     }
 724     else
 725     {
 726         /* Complex pidl. Let the child folder do the work */
 727         hr = SHELL32_GetDisplayNameOfChild(iface, pidl, dwFlags, pszPath, MAX_PATH);
 728     }
 729
 730     if (SUCCEEDED (hr))
 731     {
 732         /* Win9x always returns ANSI strings, NT always returns Unicode strings */
 733         if (GetVersion() & 0x80000000)
 734         {
 735             strRet->uType = STRRET_CSTR;
 736             if (!WideCharToMultiByte(CP_ACP, 0, pszPath, -1, strRet->u.cStr, MAX_PATH,
 737                     NULL, NULL))
 738                 strRet->u.cStr[0] = '\0';
 739             CoTaskMemFree(pszPath);
 740         }
 741         else
 742         {
 743             strRet->uType = STRRET_WSTR;
 744             strRet->u.pOleStr = pszPath;
 745         }
 746     }
 747     else
 748         CoTaskMemFree(pszPath);
 749
 750     TRACE ("-- (%p)->(%s)\n", This, strRet->uType == STRRET_CSTR ? strRet->u.cStr : debugstr_w(strRet->u.pOleStr));
 751     return hr;
 752 }
 753
 754 /**************************************************************************
 755 *  ISF_MyComputer_fnSetNameOf
 756 *  Changes the name of a file object or subfolder, possibly changing its item
 757 *  identifier in the process.
 758 *
 759 * PARAMETERS
 760 *  hwndOwner  [in]   Owner window for output
 761 *  pidl       [in]   simple pidl of item to change
 762 *  lpszName   [in]   the items new display name
 763 *  dwFlags    [in]   SHGNO formatting flags
 764 *  ppidlOut   [out]  simple pidl returned
 765 */
 766 static HRESULT WINAPI ISF_MyComputer_fnSetNameOf (
 767                IShellFolder2 * iface, HWND hwndOwner, LPCITEMIDLIST pidl,
 768                LPCOLESTR lpName, DWORD dwFlags, LPITEMIDLIST * pPidlOut)
 769 {
 770     IMyComputerFolderImpl *This = impl_from_IShellFolder2(iface);
 771     FIXME ("(%p)->(%p,pidl=%p,%s,%u,%p)\n", This,
 772            hwndOwner, pidl, debugstr_w (lpName), dwFlags, pPidlOut);
 773     return E_FAIL;
 774 }
 775
 776 static HRESULT WINAPI ISF_MyComputer_fnGetDefaultSearchGUID (
 777                IShellFolder2 * iface, GUID * pguid)
 778 {
 779     IMyComputerFolderImpl *This = impl_from_IShellFolder2(iface);
 780     FIXME ("(%p)\n", This);
 781     return E_NOTIMPL;
 782 }
 783 static HRESULT WINAPI ISF_MyComputer_fnEnumSearches (
 784                IShellFolder2 * iface, IEnumExtraSearch ** ppenum)
 785 {
 786     IMyComputerFolderImpl *This = impl_from_IShellFolder2(iface);
 787     FIXME ("(%p)\n", This);
 788     return E_NOTIMPL;
 789 }
 790 static HRESULT WINAPI ISF_MyComputer_fnGetDefaultColumn (
 791                IShellFolder2 *iface, DWORD dwRes, ULONG *pSort, ULONG *pDisplay)
 792 {
 793     IMyComputerFolderImpl *This = impl_from_IShellFolder2(iface);
 794
 795     TRACE ("(%p)\n", This);
 796
 797     if (pSort)
 798          *pSort = 0;
 799     if (pDisplay)
 800         *pDisplay = 0;
 801     return S_OK;
 802 }
 803 static HRESULT WINAPI ISF_MyComputer_fnGetDefaultColumnState (
 804                IShellFolder2 * iface, UINT iColumn, DWORD * pcsFlags)
 805 {
 806     IMyComputerFolderImpl *This = impl_from_IShellFolder2(iface);
 807
 808     TRACE ("(%p)->(%d %p)\n", This, iColumn, pcsFlags);
 809
 810     if (!pcsFlags || iColumn >= MYCOMPUTERSHELLVIEWCOLUMNS)
 811         return E_INVALIDARG;
 812
 813     *pcsFlags = mycomputer_header[iColumn].pcsFlags;
 814
 815     return S_OK;
 816 }
 817
 818 static HRESULT WINAPI ISF_MyComputer_fnGetDetailsEx (IShellFolder2 * iface,
 819                LPCITEMIDLIST pidl, const SHCOLUMNID * pscid, VARIANT * pv)
 820 {
 821     IMyComputerFolderImpl *This = impl_from_IShellFolder2(iface);
 822     FIXME ("(%p)\n", This);
 823     return E_NOTIMPL;
 824 }
 825
 826 /* FIXME: drive size >4GB is rolling over */
 827 static HRESULT WINAPI ISF_MyComputer_fnGetDetailsOf (IShellFolder2 *iface,
 828                LPCITEMIDLIST pidl, UINT iColumn, SHELLDETAILS *psd)
 829 {
 830     IMyComputerFolderImpl *This = impl_from_IShellFolder2(iface);
 831     char szPath[MAX_PATH];
 832     ULARGE_INTEGER ulBytes;
 833     HRESULT hr = S_OK;
 834
 835     TRACE ("(%p)->(%p %i %p)\n", This, pidl, iColumn, psd);
 836
 837     if (!psd || iColumn >= MYCOMPUTERSHELLVIEWCOLUMNS)
 838         return E_INVALIDARG;
 839
 840     if (!pidl)
 841         return SHELL32_GetColumnDetails(mycomputer_header, iColumn, psd);
 842
 843     psd->str.u.cStr[0] = 0;
 844     psd->str.uType = STRRET_CSTR;
 845
 846     switch (iColumn)
 847     {
 848         case 0:        /* name */
 849             hr = IShellFolder_GetDisplayNameOf (iface, pidl,
 850                        SHGDN_NORMAL | SHGDN_INFOLDER, &psd->str);
 851             break;
 852         case 1:        /* type */
 853             _ILGetFileType (pidl, psd->str.u.cStr, MAX_PATH);
 854             break;
 855         case 2:        /* total size */
 856             if (_ILIsDrive (pidl))
 857             {
 858                 _ILSimpleGetText (pidl, szPath, MAX_PATH);
 859                 GetDiskFreeSpaceExA (szPath, NULL, &ulBytes, NULL);
 860                 StrFormatByteSizeA (ulBytes.u.LowPart, psd->str.u.cStr, MAX_PATH);
 861             }
 862             break;
 863         case 3:        /* free size */
 864             if (_ILIsDrive (pidl))
 865             {
 866                 _ILSimpleGetText (pidl, szPath, MAX_PATH);
 867                 GetDiskFreeSpaceExA (szPath, &ulBytes, NULL, NULL);
 868                 StrFormatByteSizeA (ulBytes.u.LowPart, psd->str.u.cStr, MAX_PATH);
 869             }
 870             break;
 871     }
 872
 873     return hr;
 874 }
 875
 876 static HRESULT WINAPI ISF_MyComputer_fnMapColumnToSCID (
 877                IShellFolder2 * iface, UINT column, SHCOLUMNID * pscid)
 878 {
 879     IMyComputerFolderImpl *This = impl_from_IShellFolder2(iface);
 880     FIXME ("(%p)\n", This);
 881     return E_NOTIMPL;
 882 }
 883
 884 static const IShellFolder2Vtbl vt_ShellFolder2 =
 885 {
 886     ISF_MyComputer_fnQueryInterface,
 887     ISF_MyComputer_fnAddRef,
 888     ISF_MyComputer_fnRelease,
 889     ISF_MyComputer_fnParseDisplayName,
 890     ISF_MyComputer_fnEnumObjects,
 891     ISF_MyComputer_fnBindToObject,
 892     ISF_MyComputer_fnBindToStorage,
 893     ISF_MyComputer_fnCompareIDs,
 894     ISF_MyComputer_fnCreateViewObject,
 895     ISF_MyComputer_fnGetAttributesOf,
 896     ISF_MyComputer_fnGetUIObjectOf,
 897     ISF_MyComputer_fnGetDisplayNameOf,
 898     ISF_MyComputer_fnSetNameOf,
 899     /* ShellFolder2 */
 900     ISF_MyComputer_fnGetDefaultSearchGUID,
 901     ISF_MyComputer_fnEnumSearches,
 902     ISF_MyComputer_fnGetDefaultColumn,
 903     ISF_MyComputer_fnGetDefaultColumnState,
 904     ISF_MyComputer_fnGetDetailsEx,
 905     ISF_MyComputer_fnGetDetailsOf,
 906     ISF_MyComputer_fnMapColumnToSCID
 907 };
 908
 909 /************************************************************************
 910  *    IMCFldr_PersistFolder2_QueryInterface
 911  */
 912 static HRESULT WINAPI IMCFldr_PersistFolder2_QueryInterface (
 913                IPersistFolder2 * iface, REFIID iid, LPVOID * ppvObj)
 914 {
 915     IMyComputerFolderImpl *This = impl_from_IPersistFolder2(iface);
 916     TRACE ("(%p)\n", This);
 917     return IUnknown_QueryInterface (&This->IShellFolder2_iface, iid, ppvObj);
 918 }
 919
 920 /************************************************************************
 921  *    IMCFldr_PersistFolder2_AddRef
 922  */
 923 static ULONG WINAPI IMCFldr_PersistFolder2_AddRef (IPersistFolder2 * iface)
 924 {
 925     IMyComputerFolderImpl *This = impl_from_IPersistFolder2(iface);
 926     TRACE ("(%p)->(count=%u)\n", This, This->ref);
 927     return IUnknown_AddRef (&This->IShellFolder2_iface);
 928 }
 929
 930 /************************************************************************
 931  *    ISFPersistFolder_Release
 932  */
 933 static ULONG WINAPI IMCFldr_PersistFolder2_Release (IPersistFolder2 * iface)
 934 {
 935     IMyComputerFolderImpl *This = impl_from_IPersistFolder2(iface);
 936     TRACE ("(%p)->(count=%u)\n", This, This->ref);
 937     return IUnknown_Release (&This->IShellFolder2_iface);
 938 }
 939
 940 /************************************************************************
 941  *    IMCFldr_PersistFolder2_GetClassID
 942  */
 943 static HRESULT WINAPI IMCFldr_PersistFolder2_GetClassID (
 944                IPersistFolder2 * iface, CLSID * lpClassId)
 945 {
 946     IMyComputerFolderImpl *This = impl_from_IPersistFolder2(iface);
 947
 948     TRACE ("(%p)\n", This);
 949
 950     if (!lpClassId)
 951     return E_POINTER;
 952     *lpClassId = CLSID_MyComputer;
 953
 954     return S_OK;
 955 }
 956
 957 /************************************************************************
 958  *    IMCFldr_PersistFolder2_Initialize
 959  *
 960  * NOTES: it makes no sense to change the pidl
 961  */
 962 static HRESULT WINAPI IMCFldr_PersistFolder2_Initialize (
 963                IPersistFolder2 * iface, LPCITEMIDLIST pidl)
 964 {
 965     IMyComputerFolderImpl *This = impl_from_IPersistFolder2(iface);
 966     TRACE ("(%p)->(%p)\n", This, pidl);
 967     return E_NOTIMPL;
 968 }
 969
 970 /**************************************************************************
 971  *    IPersistFolder2_fnGetCurFolder
 972  */
 973 static HRESULT WINAPI IMCFldr_PersistFolder2_GetCurFolder (
 974                IPersistFolder2 * iface, LPITEMIDLIST * pidl)
 975 {
 976     IMyComputerFolderImpl *This = impl_from_IPersistFolder2(iface);
 977
 978     TRACE ("(%p)->(%p)\n", This, pidl);
 979
 980     if (!pidl)
 981         return E_POINTER;
 982     *pidl = ILClone (This->pidlRoot);
 983     return S_OK;
 984 }
 985
 986 static const IPersistFolder2Vtbl vt_PersistFolder2 =
 987 {
 988     IMCFldr_PersistFolder2_QueryInterface,
 989     IMCFldr_PersistFolder2_AddRef,
 990     IMCFldr_PersistFolder2_Release,
 991     IMCFldr_PersistFolder2_GetClassID,
 992     IMCFldr_PersistFolder2_Initialize,
 993     IMCFldr_PersistFolder2_GetCurFolder
 994 };