dlls/shell32/brsfolder.c

   1 /*
   2  * Copyright 1999 Juergen Schmied
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  *
  18  * FIXME:
  19  *  - many memory leaks
  20  *  - many flags unimplemented
  21  */
  22
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26 #define COBJMACROS
  27 #define NONAMELESSUNION
  28 #define NONAMELESSSTRUCT
  29
  30 #include "wine/debug.h"
  31 #include "undocshell.h"
  32 #include "shlguid.h"
  33 #include "pidl.h"
  34 #include "shell32_main.h"
  35 #include "shellapi.h"
  36 #include "shresdef.h"
  37
  38 WINE_DEFAULT_DEBUG_CHANNEL(shell);
  39
  40 typedef struct tagbrowse_info
  41 {
  42     HWND          hWnd;
  43     HWND          hwndTreeView;
  44     LPBROWSEINFOW lpBrowseInfo;
  45     LPITEMIDLIST  pidlRet;
  46 } browse_info;
  47
  48 typedef struct tagTV_ITEMDATA
  49 {
  50    LPSHELLFOLDER lpsfParent; /* IShellFolder of the parent */
  51    LPITEMIDLIST  lpi;        /* PIDL relativ to parent */
  52    LPITEMIDLIST  lpifq;      /* Fully qualified PIDL */
  53    IEnumIDList*  pEnumIL;    /* Children iterator */
  54 } TV_ITEMDATA, *LPTV_ITEMDATA;
  55
  56 #define SUPPORTEDFLAGS (BIF_STATUSTEXT | \
  57                         BIF_BROWSEFORCOMPUTER | \
  58                         BIF_RETURNFSANCESTORS | \
  59                         BIF_RETURNONLYFSDIRS | \
  60                         BIF_BROWSEINCLUDEFILES)
  61
  62 static void FillTreeView(browse_info*, LPSHELLFOLDER,
  63                LPITEMIDLIST, HTREEITEM, IEnumIDList*);
  64 static HTREEITEM InsertTreeViewItem( browse_info*, IShellFolder *,
  65                LPCITEMIDLIST, LPCITEMIDLIST, IEnumIDList*, HTREEITEM);
  66
  67 const WCHAR szBrowseFolderInfo[] = {
  68     '_','_','W','I','N','E','_',
  69     'B','R','S','F','O','L','D','E','R','D','L','G','_',
  70     'I','N','F','O',0
  71 };
  72
  73 static inline DWORD BrowseFlagsToSHCONTF(UINT ulFlags)
  74 {
  75     return SHCONTF_FOLDERS | (ulFlags & BIF_BROWSEINCLUDEFILES ? SHCONTF_NONFOLDERS : 0);
  76 }
  77
  78 static void browsefolder_callback( LPBROWSEINFOW lpBrowseInfo, HWND hWnd,
  79                                    UINT msg, LPARAM param )
  80 {
  81     if (!lpBrowseInfo->lpfn)
  82         return;
  83     lpBrowseInfo->lpfn( hWnd, msg, param, lpBrowseInfo->lParam );
  84 }
  85
  86 /******************************************************************************
  87  * InitializeTreeView [Internal]
  88  *
  89  * Called from WM_INITDIALOG handler.
  90  *
  91  * PARAMS
  92  *  hwndParent [I] The BrowseForFolder dialog
  93  *  root       [I] ITEMIDLIST of the root shell folder
  94  */
  95 static void InitializeTreeView( browse_info *info )
  96 {
  97     LPITEMIDLIST pidlParent, pidlChild;
  98     HIMAGELIST hImageList;
  99     HRESULT hr;
 100     IShellFolder *lpsfParent, *lpsfRoot;
 101     IEnumIDList * pEnumChildren = NULL;
 102     HTREEITEM item;
 103     DWORD flags;
 104     LPCITEMIDLIST root = info->lpBrowseInfo->pidlRoot;
 105
 106     TRACE("%p\n", info );
 107
 108     Shell_GetImageList(NULL, &hImageList);
 109
 110     if (hImageList)
 111         TreeView_SetImageList( info->hwndTreeView, hImageList, 0 );
 112
 113     /* We want to call InsertTreeViewItem down the code, in order to insert
 114      * the root item of the treeview. Due to InsertTreeViewItem's signature,
 115      * we need the following to do this:
 116      *
 117      * + An ITEMIDLIST corresponding to _the parent_ of root.
 118      * + An ITEMIDLIST, which is a relative path from root's parent to root
 119      *   (containing a single SHITEMID).
 120      * + An IShellFolder interface pointer of root's parent folder.
 121      *
 122      * If root is 'Desktop', then root's parent is also 'Desktop'.
 123      */
 124
 125     pidlParent = ILClone(root);
 126     ILRemoveLastID(pidlParent);
 127     pidlChild = ILClone(ILFindLastID(root));
 128
 129     if (_ILIsDesktop(pidlParent)) {
 130         hr = SHGetDesktopFolder(&lpsfParent);
 131     } else {
 132         IShellFolder *lpsfDesktop;
 133         hr = SHGetDesktopFolder(&lpsfDesktop);
 134         if (!SUCCEEDED(hr)) {
 135             WARN("SHGetDesktopFolder failed! hr = %08lx\n", hr);
 136             return;
 137         }
 138         hr = IShellFolder_BindToObject(lpsfDesktop, pidlParent, 0, &IID_IShellFolder, (LPVOID*)&lpsfParent);
 139         IShellFolder_Release(lpsfDesktop);
 140     }
 141
 142     if (!SUCCEEDED(hr)) {
 143         WARN("Could not bind to parent shell folder! hr = %08lx\n", hr);
 144         return;
 145     }
 146
 147     if (pidlChild && pidlChild->mkid.cb) {
 148         hr = IShellFolder_BindToObject(lpsfParent, pidlChild, 0, &IID_IShellFolder, (LPVOID*)&lpsfRoot);
 149     } else {
 150         lpsfRoot = lpsfParent;
 151         hr = IShellFolder_AddRef(lpsfParent);
 152     }
 153
 154     if (!SUCCEEDED(hr)) {
 155         WARN("Could not bind to root shell folder! hr = %08lx\n", hr);
 156         IShellFolder_Release(lpsfParent);
 157         return;
 158     }
 159
 160     flags = BrowseFlagsToSHCONTF( info->lpBrowseInfo->ulFlags );
 161     hr = IShellFolder_EnumObjects( lpsfRoot, info->hWnd, flags, &pEnumChildren );
 162     if (!SUCCEEDED(hr)) {
 163         WARN("Could not get child iterator! hr = %08lx\n", hr);
 164         IShellFolder_Release(lpsfParent);
 165         IShellFolder_Release(lpsfRoot);
 166         return;
 167     }
 168
 169     TreeView_DeleteAllItems( info->hwndTreeView );
 170     item = InsertTreeViewItem( info, lpsfParent, pidlChild,
 171                                pidlParent, pEnumChildren, TVI_ROOT );
 172     TreeView_Expand( info->hwndTreeView, item, TVE_EXPAND );
 173
 174     IShellFolder_Release(lpsfRoot);
 175     IShellFolder_Release(lpsfParent);
 176 }
 177
 178 static int GetIcon(LPITEMIDLIST lpi, UINT uFlags)
 179 {
 180     SHFILEINFOW sfi;
 181     SHGetFileInfoW((LPCWSTR)lpi, 0 ,&sfi, sizeof(SHFILEINFOW), uFlags);
 182     return sfi.iIcon;
 183 }
 184
 185 static void GetNormalAndSelectedIcons(LPITEMIDLIST lpifq, LPTVITEMW lpTV_ITEM)
 186 {
 187     LPITEMIDLIST pidlDesktop = NULL;
 188     DWORD flags;
 189
 190     TRACE("%p %p\n",lpifq, lpTV_ITEM);
 191
 192     if (!lpifq)
 193     {
 194         pidlDesktop = _ILCreateDesktop();
 195         lpifq = pidlDesktop;
 196     }
 197
 198     flags = SHGFI_PIDL | SHGFI_SYSICONINDEX | SHGFI_SMALLICON;
 199     lpTV_ITEM->iImage = GetIcon( lpifq, flags );
 200
 201     flags = SHGFI_PIDL | SHGFI_SYSICONINDEX | SHGFI_SMALLICON | SHGFI_OPENICON;
 202     lpTV_ITEM->iSelectedImage = GetIcon( lpifq, flags );
 203
 204     if (pidlDesktop)
 205         ILFree( pidlDesktop );
 206 }
 207
 208 /******************************************************************************
 209  * GetName [Internal]
 210  *
 211  * Query a shell folder for the display name of one of it's children
 212  *
 213  * PARAMS
 214  *  lpsf           [I] IShellFolder interface of the folder to be queried.
 215  *  lpi            [I] ITEMIDLIST of the child, relative to parent
 216  *  dwFlags        [I] as in IShellFolder::GetDisplayNameOf
 217  *  lpFriendlyName [O] The desired display name in unicode
 218  *
 219  * RETURNS
 220  *  Success: TRUE
 221  *  Failure: FALSE
 222  */
 223 static BOOL GetName(LPSHELLFOLDER lpsf, LPCITEMIDLIST lpi, DWORD dwFlags, LPWSTR lpFriendlyName)
 224 {
 225         BOOL   bSuccess=TRUE;
 226         STRRET str;
 227
 228         TRACE("%p %p %lx %p\n", lpsf, lpi, dwFlags, lpFriendlyName);
 229         if (SUCCEEDED(IShellFolder_GetDisplayNameOf(lpsf, lpi, dwFlags, &str)))
 230         {
 231           if (FAILED(StrRetToStrNW(lpFriendlyName, MAX_PATH, &str, lpi)))
 232           {
 233               bSuccess = FALSE;
 234           }
 235         }
 236         else
 237           bSuccess = FALSE;
 238
 239         TRACE("-- %s\n", debugstr_w(lpFriendlyName));
 240         return bSuccess;
 241 }
 242
 243 /******************************************************************************
 244  * InsertTreeViewItem [Internal]
 245  *
 246  * PARAMS
 247  *  info       [I] data for the dialog
 248  *  lpsf       [I] IShellFolder interface of the item's parent shell folder
 249  *  pidl       [I] ITEMIDLIST of the child to insert, relativ to parent
 250  *  pidlParent [I] ITEMIDLIST of the parent shell folder
 251  *  pEnumIL    [I] Iterator for the children of the item to be inserted
 252  *  hParent    [I] The treeview-item that represents the parent shell folder
 253  *
 254  * RETURNS
 255  *  Success: Handle to the created and inserted treeview-item
 256  *  Failure: NULL
 257  */
 258 static HTREEITEM InsertTreeViewItem( browse_info *info, IShellFolder * lpsf,
 259     LPCITEMIDLIST pidl, LPCITEMIDLIST pidlParent, IEnumIDList* pEnumIL,
 260     HTREEITEM hParent)
 261 {
 262         TVITEMW         tvi;
 263         TVINSERTSTRUCTW tvins;
 264         WCHAR           szBuff[MAX_PATH];
 265         LPTV_ITEMDATA   lptvid=0;
 266
 267         tvi.mask  = TVIF_TEXT | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_PARAM;
 268
 269         tvi.cChildren= pEnumIL ? 1 : 0;
 270         tvi.mask |= TVIF_CHILDREN;
 271
 272         lptvid = SHAlloc( sizeof(TV_ITEMDATA) );
 273         if (!lptvid)
 274             return NULL;
 275
 276         if (!GetName(lpsf, pidl, SHGDN_NORMAL, szBuff))
 277             return NULL;
 278
 279         tvi.pszText    = szBuff;
 280         tvi.cchTextMax = MAX_PATH;
 281         tvi.lParam = (LPARAM)lptvid;
 282
 283         IShellFolder_AddRef(lpsf);
 284         lptvid->lpsfParent = lpsf;
 285         lptvid->lpi     = ILClone(pidl);
 286         lptvid->lpifq   = pidlParent ? ILCombine(pidlParent, pidl) : ILClone(pidl);
 287         lptvid->pEnumIL = pEnumIL;
 288         GetNormalAndSelectedIcons(lptvid->lpifq, &tvi);
 289
 290         tvins.u.item       = tvi;
 291         tvins.hInsertAfter = NULL;
 292         tvins.hParent      = hParent;
 293
 294         return (HTREEITEM)TreeView_InsertItemW( info->hwndTreeView, &tvins );
 295 }
 296
 297 /******************************************************************************
 298  * FillTreeView [Internal]
 299  *
 300  * For each child (given by lpe) of the parent shell folder, which is given by
 301  * lpsf and whose PIDL is pidl, insert a treeview-item right under hParent
 302  *
 303  * PARAMS
 304  *  info    [I] data for the dialog
 305  *  lpsf    [I] IShellFolder interface of the parent shell folder
 306  *  pidl    [I] ITEMIDLIST of the parent shell folder
 307  *  hParent [I] The treeview item that represents the parent shell folder
 308  *  lpe     [I] An iterator for the children of the parent shell folder
 309  */
 310 static void FillTreeView( browse_info *info, IShellFolder * lpsf,
 311                  LPITEMIDLIST  pidl, HTREEITEM hParent, IEnumIDList* lpe)
 312 {
 313         HTREEITEM       hPrev = 0;
 314         LPITEMIDLIST    pidlTemp = 0;
 315         ULONG           ulFetched;
 316         HRESULT         hr;
 317         HWND            hwnd = GetParent( info->hwndTreeView );
 318
 319         TRACE("%p %p %p %p\n",lpsf, pidl, hParent, lpe);
 320
 321         /* No IEnumIDList -> No children */
 322         if (!lpe) return;
 323
 324         SetCapture( hwnd );
 325         SetCursor( LoadCursorA( 0, (LPSTR)IDC_WAIT ) );
 326
 327         while (NOERROR == IEnumIDList_Next(lpe,1,&pidlTemp,&ulFetched))
 328         {
 329             ULONG ulAttrs = SFGAO_HASSUBFOLDER | SFGAO_FOLDER;
 330             IEnumIDList* pEnumIL = NULL;
 331             IShellFolder* pSFChild = NULL;
 332             IShellFolder_GetAttributesOf(lpsf, 1, (LPCITEMIDLIST*)&pidlTemp, &ulAttrs);
 333             if (ulAttrs & SFGAO_FOLDER)
 334             {
 335                 hr = IShellFolder_BindToObject(lpsf,pidlTemp,NULL,&IID_IShellFolder,(LPVOID*)&pSFChild);
 336                 if (SUCCEEDED(hr))
 337                 {
 338                     DWORD flags = BrowseFlagsToSHCONTF(info->lpBrowseInfo->ulFlags);
 339                     hr = IShellFolder_EnumObjects(pSFChild, hwnd, flags, &pEnumIL);
 340                     if (hr == S_OK)
 341                     {
 342                         if ((IEnumIDList_Skip(pEnumIL, 1) != S_OK) ||
 343                              FAILED(IEnumIDList_Reset(pEnumIL)))
 344                         {
 345                             IEnumIDList_Release(pEnumIL);
 346                             pEnumIL = NULL;
 347                         }
 348                     }
 349                     IShellFolder_Release(pSFChild);
 350                 }
 351             }
 352
 353             if (!(hPrev = InsertTreeViewItem(info, lpsf, pidlTemp, pidl, pEnumIL, hParent)))
 354                 goto done;
 355             SHFree(pidlTemp);  /* Finally, free the pidl that the shell gave us... */
 356             pidlTemp=NULL;
 357         }
 358
 359 done:
 360         ReleaseCapture();
 361         SetCursor(LoadCursorW(0, (LPWSTR)IDC_ARROW));
 362
 363         if (pidlTemp)
 364           SHFree(pidlTemp);
 365 }
 366
 367 static inline BOOL PIDLIsType(LPCITEMIDLIST pidl, PIDLTYPE type)
 368 {
 369     LPPIDLDATA data = _ILGetDataPointer(pidl);
 370     if (!data)
 371         return FALSE;
 372     return (data->type == type);
 373 }
 374
 375 static void BrsFolder_CheckValidSelection( browse_info *info, LPTV_ITEMDATA lptvid )
 376 {
 377     LPBROWSEINFOW lpBrowseInfo = info->lpBrowseInfo;
 378     LPCITEMIDLIST pidl = lptvid->lpi;
 379     BOOL bEnabled = TRUE;
 380     DWORD dwAttributes;
 381     HRESULT r;
 382
 383     if ((lpBrowseInfo->ulFlags & BIF_BROWSEFORCOMPUTER) &&
 384         !PIDLIsType(pidl, PT_COMP))
 385         bEnabled = FALSE;
 386     if (lpBrowseInfo->ulFlags & BIF_RETURNFSANCESTORS)
 387     {
 388         dwAttributes = SFGAO_FILESYSANCESTOR | SFGAO_FILESYSTEM;
 389         r = IShellFolder_GetAttributesOf(lptvid->lpsfParent, 1,
 390                                 (LPCITEMIDLIST*)&lptvid->lpi, &dwAttributes);
 391         if (FAILED(r) || !dwAttributes)
 392             bEnabled = FALSE;
 393     }
 394     if (lpBrowseInfo->ulFlags & BIF_RETURNONLYFSDIRS)
 395     {
 396         dwAttributes = SFGAO_FOLDER | SFGAO_FILESYSTEM;
 397         r = IShellFolder_GetAttributesOf(lptvid->lpsfParent, 1,
 398                                 (LPCITEMIDLIST*)&lptvid->lpi, &dwAttributes);
 399         if (FAILED(r) || (dwAttributes != (SFGAO_FOLDER | SFGAO_FILESYSTEM)))
 400             bEnabled = FALSE;
 401     }
 402     SendMessageW(info->hWnd, BFFM_ENABLEOK, 0, (LPARAM)bEnabled);
 403 }
 404
 405 static LRESULT BrsFolder_Treeview_Delete( browse_info *info, NMTREEVIEWW *pnmtv )
 406 {
 407     LPTV_ITEMDATA lptvid = (LPTV_ITEMDATA)pnmtv->itemOld.lParam;
 408
 409     TRACE("TVN_DELETEITEMA/W %p\n", lptvid);
 410
 411     IShellFolder_Release(lptvid->lpsfParent);
 412     if (lptvid->pEnumIL)
 413         IEnumIDList_Release(lptvid->pEnumIL);
 414     SHFree(lptvid->lpi);
 415     SHFree(lptvid->lpifq);
 416     SHFree(lptvid);
 417     return 0;
 418 }
 419
 420 static LRESULT BrsFolder_Treeview_Expand( browse_info *info, NMTREEVIEWW *pnmtv )
 421 {
 422     IShellFolder *lpsf2 = NULL;
 423     LPTV_ITEMDATA lptvid = (LPTV_ITEMDATA) pnmtv->itemNew.lParam;
 424     HRESULT r;
 425
 426     TRACE("TVN_ITEMEXPANDINGA/W\n");
 427
 428     if ((pnmtv->itemNew.state & TVIS_EXPANDEDONCE))
 429         return 0;
 430
 431     if (lptvid->lpi && lptvid->lpi->mkid.cb) {
 432         r = IShellFolder_BindToObject( lptvid->lpsfParent, lptvid->lpi, 0,
 433                                       (REFIID)&IID_IShellFolder, (LPVOID *)&lpsf2 );
 434     } else {
 435         lpsf2 = lptvid->lpsfParent;
 436         r = IShellFolder_AddRef(lpsf2);
 437     }
 438
 439     if (SUCCEEDED(r))
 440         FillTreeView( info, lpsf2, lptvid->lpifq, pnmtv->itemNew.hItem, lptvid->pEnumIL);
 441
 442     /* My Computer is already sorted and trying to do a simple text
 443      * sort will only mess things up */
 444     if (!_ILIsMyComputer(lptvid->lpi))
 445         TreeView_SortChildren(info->hwndTreeView, pnmtv->itemNew.hItem, FALSE);
 446
 447     return 0;
 448 }
 449
 450 static HRESULT BrsFolder_Treeview_Changed( browse_info *info, NMTREEVIEWW *pnmtv )
 451 {
 452     LPTV_ITEMDATA lptvid = (LPTV_ITEMDATA) pnmtv->itemNew.lParam;
 453
 454     lptvid = (LPTV_ITEMDATA) pnmtv->itemNew.lParam;
 455     info->pidlRet = lptvid->lpifq;
 456     browsefolder_callback( info->lpBrowseInfo, info->hWnd, BFFM_SELCHANGED,
 457                            (LPARAM)info->pidlRet );
 458     BrsFolder_CheckValidSelection( info, lptvid );
 459     return 0;
 460 }
 461
 462 static LRESULT BrsFolder_OnNotify( browse_info *info, UINT CtlID, LPNMHDR lpnmh )
 463 {
 464     NMTREEVIEWW *pnmtv = (NMTREEVIEWW *)lpnmh;
 465
 466     TRACE("%p %x %p msg=%x\n", info, CtlID, lpnmh, pnmtv->hdr.code);
 467
 468     if (pnmtv->hdr.idFrom != IDD_TREEVIEW)
 469         return 0;
 470
 471     switch (pnmtv->hdr.code)
 472     {
 473     case TVN_DELETEITEMA:
 474     case TVN_DELETEITEMW:
 475         return BrsFolder_Treeview_Delete( info, pnmtv );
 476
 477     case TVN_ITEMEXPANDINGA:
 478     case TVN_ITEMEXPANDINGW:
 479         return BrsFolder_Treeview_Expand( info, pnmtv );
 480
 481     case TVN_SELCHANGEDA:
 482     case TVN_SELCHANGEDW:
 483         return BrsFolder_Treeview_Changed( info, pnmtv );
 484
 485     default:
 486         WARN("unhandled (%d)\n", pnmtv->hdr.code);
 487         break;
 488     }
 489
 490     return 0;
 491 }
 492
 493
 494 static BOOL BrsFolder_OnCreate( HWND hWnd, browse_info *info )
 495 {
 496     LPBROWSEINFOW lpBrowseInfo = info->lpBrowseInfo;
 497
 498     info->hWnd = hWnd;
 499     SetPropW( hWnd, szBrowseFolderInfo, info );
 500
 501     if (lpBrowseInfo->ulFlags & ~SUPPORTEDFLAGS)
 502         FIXME("flags %x not implemented\n", lpBrowseInfo->ulFlags & ~SUPPORTEDFLAGS);
 503
 504     if (lpBrowseInfo->lpszTitle)
 505         SetWindowTextW( GetDlgItem(hWnd, IDD_TITLE), lpBrowseInfo->lpszTitle );
 506     else
 507         ShowWindow( GetDlgItem(hWnd, IDD_TITLE), SW_HIDE );
 508
 509     if (!(lpBrowseInfo->ulFlags & BIF_STATUSTEXT))
 510         ShowWindow( GetDlgItem(hWnd, IDD_STATUS), SW_HIDE );
 511
 512     info->hwndTreeView = GetDlgItem( hWnd, IDD_TREEVIEW );
 513     if (info->hwndTreeView)
 514         InitializeTreeView( info );
 515     else
 516         ERR("treeview control missing!\n");
 517
 518     browsefolder_callback( info->lpBrowseInfo, hWnd, BFFM_INITIALIZED, 0 );
 519
 520     return TRUE;
 521 }
 522
 523 static BOOL BrsFolder_OnCommand( browse_info *info, UINT id )
 524 {
 525     LPBROWSEINFOW lpBrowseInfo = info->lpBrowseInfo;
 526
 527     switch (id)
 528     {
 529     case IDOK:
 530         info->pidlRet = ILClone(info->pidlRet); /* The original pidl will be free'd. */
 531         pdump( info->pidlRet );
 532         if (lpBrowseInfo->pszDisplayName)
 533             SHGetPathFromIDListW( info->pidlRet, lpBrowseInfo->pszDisplayName );
 534         EndDialog( info->hWnd, 1 );
 535         return TRUE;
 536
 537     case IDCANCEL:
 538         EndDialog( info->hWnd, 0 );
 539         return TRUE;
 540     }
 541     return FALSE;
 542 }
 543
 544 /*************************************************************************
 545  *             BrsFolderDlgProc32  (not an exported API function)
 546  */
 547 static INT_PTR CALLBACK BrsFolderDlgProc( HWND hWnd, UINT msg, WPARAM wParam,
 548                                           LPARAM lParam )
 549 {
 550     browse_info *info;
 551
 552     TRACE("hwnd=%p msg=%04x 0x%08x 0x%08lx\n", hWnd,  msg, wParam, lParam );
 553
 554     if (msg == WM_INITDIALOG)
 555         return BrsFolder_OnCreate( hWnd, (browse_info*) lParam );
 556
 557     info = (browse_info*) GetPropW( hWnd, szBrowseFolderInfo );
 558
 559     switch (msg)
 560     {
 561     case WM_NOTIFY:
 562         return BrsFolder_OnNotify( info, (UINT)wParam, (LPNMHDR)lParam);
 563
 564     case WM_COMMAND:
 565         return BrsFolder_OnCommand( info, wParam );
 566
 567     case BFFM_SETSTATUSTEXTA:
 568         TRACE("Set status %s\n", debugstr_a((LPSTR)lParam));
 569         SetWindowTextA(GetDlgItem(hWnd, IDD_STATUS), (LPSTR)lParam);
 570         break;
 571
 572     case BFFM_SETSTATUSTEXTW:
 573         TRACE("Set status %s\n", debugstr_w((LPWSTR)lParam));
 574         SetWindowTextW(GetDlgItem(hWnd, IDD_STATUS), (LPWSTR)lParam);
 575         break;
 576
 577     case BFFM_ENABLEOK:
 578         TRACE("Enable %ld\n", lParam);
 579         EnableWindow(GetDlgItem(hWnd, 1), (lParam)?TRUE:FALSE);
 580         break;
 581
 582     case BFFM_SETOKTEXT: /* unicode only */
 583         TRACE("Set OK text %s\n", debugstr_w((LPWSTR)wParam));
 584         SetWindowTextW(GetDlgItem(hWnd, 1), (LPWSTR)wParam);
 585         break;
 586
 587     case BFFM_SETSELECTIONA:
 588         if (wParam)
 589             FIXME("Set selection %s\n", debugstr_a((LPSTR)lParam));
 590         else
 591             FIXME("Set selection %p\n", (void*)lParam);
 592         break;
 593
 594     case BFFM_SETSELECTIONW:
 595         if (wParam)
 596             FIXME("Set selection %s\n", debugstr_w((LPWSTR)lParam));
 597         else
 598             FIXME("Set selection %p\n", (void*)lParam);
 599         break;
 600
 601     case BFFM_SETEXPANDED: /* unicode only */
 602         if (wParam)
 603             FIXME("Set expanded %s\n", debugstr_w((LPWSTR)lParam));
 604         else
 605             FIXME("Set expanded %p\n", (void*)lParam);
 606         break;
 607     }
 608     return FALSE;
 609 }
 610
 611 static const WCHAR swBrowseTemplateName[] = {
 612     'S','H','B','R','S','F','O','R','F','O','L','D','E','R','_','M','S','G','B','O','X',0};
 613
 614 /*************************************************************************
 615  * SHBrowseForFolderA [SHELL32.@]
 616  * SHBrowseForFolder  [SHELL32.@]
 617  */
 618 LPITEMIDLIST WINAPI SHBrowseForFolderA (LPBROWSEINFOA lpbi)
 619 {
 620     BROWSEINFOW bi;
 621     LPITEMIDLIST lpid;
 622     INT len;
 623
 624     TRACE("%p\n", lpbi);
 625
 626     bi.hwndOwner = lpbi->hwndOwner;
 627     bi.pidlRoot = lpbi->pidlRoot;
 628     if (lpbi->pszDisplayName)
 629     {
 630         bi.pszDisplayName = HeapAlloc( GetProcessHeap(), 0, MAX_PATH * sizeof(WCHAR) );
 631         MultiByteToWideChar( CP_ACP, 0, lpbi->pszDisplayName, -1, bi.pszDisplayName, MAX_PATH );
 632     }
 633     else
 634         bi.pszDisplayName = NULL;
 635
 636     if (lpbi->lpszTitle)
 637     {
 638         len = MultiByteToWideChar( CP_ACP, 0, lpbi->lpszTitle, -1, NULL, 0 );
 639         bi.lpszTitle = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
 640         MultiByteToWideChar( CP_ACP, 0, lpbi->lpszTitle, -1, (LPWSTR)bi.lpszTitle, len );
 641     }
 642     else
 643         bi.lpszTitle = NULL;
 644
 645     bi.ulFlags = lpbi->ulFlags;
 646     bi.lpfn = lpbi->lpfn;
 647     bi.lParam = lpbi->lParam;
 648     bi.iImage = lpbi->iImage;
 649     lpid = SHBrowseForFolderW( &bi );
 650     if (bi.pszDisplayName)
 651     {
 652         WideCharToMultiByte( CP_ACP, 0, bi.pszDisplayName, -1,
 653                              lpbi->pszDisplayName, MAX_PATH, 0, NULL);
 654         HeapFree( GetProcessHeap(), 0, bi.pszDisplayName );
 655     }
 656     HeapFree(GetProcessHeap(), 0, (LPVOID)bi.lpszTitle);
 657     lpbi->iImage = bi.iImage;
 658     return lpid;
 659 }
 660
 661
 662 /*************************************************************************
 663  * SHBrowseForFolderW [SHELL32.@]
 664  *
 665  * NOTES:
 666  *  crashes when passed a null pointer
 667  */
 668 LPITEMIDLIST WINAPI SHBrowseForFolderW (LPBROWSEINFOW lpbi)
 669 {
 670     browse_info info;
 671     DWORD r;
 672
 673     info.hWnd = 0;
 674     info.pidlRet = NULL;
 675     info.lpBrowseInfo = lpbi;
 676     info.hwndTreeView = NULL;
 677
 678     r = DialogBoxParamW( shell32_hInstance, swBrowseTemplateName, lpbi->hwndOwner,
 679                          BrsFolderDlgProc, (LPARAM)&info );
 680     if (!r)
 681         return NULL;
 682
 683     return info.pidlRet;
 684 }