reactos/subsys/system/regedit/treeview.c

   1 /*
   2  * Regedit treeview
   3  *
   4  * Copyright (C) 2002 Robert Dickenson <robd@reactos.org>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #define WIN32_LEAN_AND_MEAN     /* Exclude rarely-used stuff from Windows headers */
  22
  23 #define NONAMELESSUNION
  24 #define NONAMELESSSTRUCT
  25 #include <windows.h>
  26 #include <commctrl.h>
  27 #include <stdlib.h>
  28 #include <tchar.h>
  29 #include <process.h>
  30 #include <stdio.h>
  31 #include <string.h>
  32 #include <tchar.h>
  33
  34 #include "main.h"
  35
  36 /* Global variables and constants  */
  37 /* Image_Open, Image_Closed, and Image_Root - integer variables for indexes of the images.  */
  38 /* CX_ICON and CY_ICON - width and height of an icon.  */
  39 /* NUM_ICON - number of icons to add to the image list.  */
  40 int Image_Open;
  41 int Image_Closed;
  42 int Image_Root;
  43
  44 static LPTSTR pathBuffer;
  45
  46 #define CX_ICON    16
  47 #define CY_ICON    16
  48 #define NUM_ICONS    3
  49
  50 static BOOL get_item_path(HWND hwndTV, HTREEITEM hItem, HKEY* phKey, LPTSTR* pKeyPath, int* pPathLen, int* pMaxLen)
  51 {
  52     TVITEM item;
  53     int maxLen, len;
  54     LPTSTR newStr;
  55
  56     item.mask = TVIF_PARAM;
  57     item.hItem = hItem;
  58     if (!TreeView_GetItem(hwndTV, &item)) return FALSE;
  59
  60     if (item.lParam) {
  61         /* found root key with valid key value */
  62         *phKey = (HKEY)item.lParam;
  63         return TRUE;
  64     }
  65
  66     if(!get_item_path(hwndTV, TreeView_GetParent(hwndTV, hItem), phKey, pKeyPath, pPathLen, pMaxLen)) return FALSE;
  67     if (*pPathLen) {
  68         (*pKeyPath)[*pPathLen] = _T('\\');
  69         ++(*pPathLen);
  70     }
  71
  72     do {
  73         item.mask = TVIF_TEXT;
  74         item.hItem = hItem;
  75         item.pszText = *pKeyPath + *pPathLen;
  76         item.cchTextMax = maxLen = *pMaxLen - *pPathLen;
  77         if (!TreeView_GetItem(hwndTV, &item)) return FALSE;
  78         len = _tcslen(item.pszText);
  79         if (len < maxLen - 1) {
  80             *pPathLen += len;
  81             break;
  82         }
  83         newStr = HeapReAlloc(GetProcessHeap(), 0, *pKeyPath, *pMaxLen * 2);
  84         if (!newStr) return FALSE;
  85         *pKeyPath = newStr;
  86         *pMaxLen *= 2;
  87     } while(TRUE);
  88
  89     return TRUE;
  90 }
  91
  92 LPCTSTR GetItemPath(HWND hwndTV, HTREEITEM hItem, HKEY* phRootKey)
  93 {
  94     int pathLen = 0, maxLen;
  95
  96     *phRootKey = NULL;
  97     if (!pathBuffer) pathBuffer = HeapAlloc(GetProcessHeap(), 0, 1024);
  98     if (!pathBuffer) return NULL;
  99     *pathBuffer = 0;
 100     maxLen = HeapSize(GetProcessHeap(), 0, pathBuffer);
 101     if (maxLen == -1) return NULL;
 102     if (!hItem) hItem = TreeView_GetSelection(hwndTV);
 103     if (!hItem) return NULL;
 104     if (!get_item_path(hwndTV, hItem, phRootKey, &pathBuffer, &pathLen, &maxLen)) {
 105                 return NULL;
 106         }
 107     return pathBuffer;
 108 }
 109
 110 BOOL DeleteNode(HWND hwndTV, HTREEITEM hItem)
 111 {
 112     if (!hItem) hItem = TreeView_GetSelection(hwndTV);
 113     if (!hItem) return FALSE;
 114     return TreeView_DeleteItem(hwndTV, hItem);
 115 }
 116
 117 /* Add an entry to the tree. Only give hKey for root nodes (HKEY_ constants) */
 118 static HTREEITEM AddEntryToTree(HWND hwndTV, HTREEITEM hParent, LPTSTR label, HKEY hKey, DWORD dwChildren)
 119 {
 120     TVITEM tvi;
 121     TVINSERTSTRUCT tvins;
 122
 123     if (hKey) {
 124         if (RegQueryInfoKey(hKey, 0, 0, 0, &dwChildren, 0, 0, 0, 0, 0, 0, 0) != ERROR_SUCCESS) {
 125             dwChildren = 0;
 126         }
 127     }
 128
 129     tvi.mask = TVIF_TEXT | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_CHILDREN | TVIF_PARAM;
 130     tvi.pszText = label;
 131     tvi.cchTextMax = lstrlen(tvi.pszText);
 132     tvi.iImage = Image_Closed;
 133     tvi.iSelectedImage = Image_Open;
 134     tvi.cChildren = dwChildren;
 135     tvi.lParam = (LPARAM)hKey;
 136     tvins.DUMMYUNIONNAME.item = tvi;
 137     tvins.hInsertAfter = (HTREEITEM)(hKey ? TVI_LAST : TVI_FIRST);
 138     tvins.hParent = hParent;
 139     return TreeView_InsertItem(hwndTV, &tvins);
 140 }
 141
 142 BOOL RefreshTreeItem(HWND hwndTV, HTREEITEM hItem)
 143 {
 144     HKEY hRoot, hKey, hSubKey;
 145     HTREEITEM childItem;
 146     LPCTSTR KeyPath;
 147     DWORD dwCount, dwIndex, dwMaxSubKeyLen;
 148     LPTSTR Name = NULL;
 149     TVITEM tvItem;
 150     LPTSTR pszNodes = NULL;
 151     BOOL bSuccess = FALSE;
 152     LPTSTR s;
 153     BOOL bAddedAny;
 154
 155     KeyPath = GetItemPath(hwndTV, hItem, &hRoot);
 156
 157     if (*KeyPath) {
 158         if (RegOpenKeyEx(hRoot, KeyPath, 0, KEY_READ, &hKey) != ERROR_SUCCESS) {
 159             goto done;
 160         }
 161     } else {
 162         hKey = hRoot;
 163     }
 164
 165     if (RegQueryInfoKey(hKey, 0, 0, 0, &dwCount, &dwMaxSubKeyLen, 0, 0, 0, 0, 0, 0) != ERROR_SUCCESS) {
 166         goto done;
 167     }
 168
 169     /* Set the number of children again */
 170     tvItem.mask = TVIF_CHILDREN;
 171     tvItem.hItem = hItem;
 172     tvItem.cChildren = dwCount;
 173     if (!TreeView_SetItem(hwndTV, &tvItem)) {
 174         goto done;
 175     }
 176
 177     /* We don't have to bother with the rest if it's not expanded. */
 178     if (TreeView_GetItemState(hwndTV, hItem, TVIS_EXPANDED) == 0) {
 179         RegCloseKey(hKey);
 180         bSuccess = TRUE;
 181         goto done;
 182     }
 183
 184     dwMaxSubKeyLen++; /* account for the \0 terminator */
 185     if (!(Name = HeapAlloc(GetProcessHeap(), 0, dwMaxSubKeyLen * sizeof(TCHAR)))) {
 186         goto done;
 187     }
 188     tvItem.cchTextMax = dwMaxSubKeyLen;
 189     /*if (!(tvItem.pszText = HeapAlloc(GetProcessHeap(), 0, dwMaxSubKeyLen * sizeof(TCHAR)))) {
 190         goto done;
 191     }*/
 192
 193     /* Get all of the tree node siblings in one contiguous block of memory */
 194     {
 195         DWORD dwPhysicalSize = 0;
 196         DWORD dwActualSize = 0;
 197         DWORD dwNewPhysicalSize;
 198         LPTSTR pszNewNodes;
 199         DWORD dwStep = 10000;
 200
 201         for (childItem = TreeView_GetChild(hwndTV, hItem); childItem;
 202                 childItem = TreeView_GetNextSibling(hwndTV, childItem)) {
 203
 204             if (dwActualSize + dwMaxSubKeyLen + 1 > dwPhysicalSize)
 205             {
 206                 dwNewPhysicalSize = dwActualSize + dwMaxSubKeyLen + 1 + dwStep;
 207
 208                 if (pszNodes)
 209                     pszNewNodes = (LPTSTR) HeapReAlloc(GetProcessHeap(), 0, pszNodes, dwNewPhysicalSize * sizeof(TCHAR));
 210                 else
 211                     pszNewNodes = (LPTSTR) HeapAlloc(GetProcessHeap(), 0, dwNewPhysicalSize * sizeof(TCHAR));
 212                 if (!pszNewNodes)
 213                     goto done;
 214
 215                 dwPhysicalSize = dwNewPhysicalSize;
 216                 pszNodes = pszNewNodes;
 217             }
 218
 219             tvItem.mask = TVIF_TEXT;
 220             tvItem.hItem = childItem;
 221             tvItem.pszText = &pszNodes[dwActualSize];
 222             tvItem.cchTextMax = dwPhysicalSize - dwActualSize;
 223             if (!TreeView_GetItem(hwndTV, &tvItem))
 224                 goto done;
 225
 226             dwActualSize += _tcslen(&pszNodes[dwActualSize]) + 1;
 227         }
 228
 229         if (pszNodes)
 230             pszNodes[dwActualSize] = '\0';
 231     }
 232
 233     /* Now go through all the children in the registry, and check if any have to be added. */
 234     bAddedAny = FALSE;
 235     for (dwIndex = 0; dwIndex < dwCount; dwIndex++) {
 236         DWORD cName = dwMaxSubKeyLen, dwSubCount;
 237         BOOL found;
 238
 239         found = FALSE;
 240         if (RegEnumKeyEx(hKey, dwIndex, Name, &cName, 0, 0, 0, NULL) != ERROR_SUCCESS) {
 241             continue;
 242         }
 243
 244         /* Check if the node is already in there. */
 245         if (pszNodes) {
 246             for (s = pszNodes; *s; s += _tcslen(s) + 1) {
 247                 if (!_tcscmp(s, Name)) {
 248                     found = TRUE;
 249                     break;
 250                 }
 251             }
 252         }
 253
 254         if (found == FALSE) {
 255             /* Find the number of children of the node. */
 256             dwSubCount = 0;
 257             if (RegOpenKeyEx(hKey, Name, 0, KEY_QUERY_VALUE, &hSubKey) == ERROR_SUCCESS) {
 258                 if (RegQueryInfoKey(hSubKey, 0, 0, 0, &dwSubCount, 0, 0, 0, 0, 0, 0, 0) != ERROR_SUCCESS) {
 259                     dwSubCount = 0;
 260                 }
 261                 RegCloseKey(hSubKey);
 262             }
 263
 264             AddEntryToTree(hwndTV, hItem, Name, NULL, dwSubCount);
 265             bAddedAny = TRUE;
 266         }
 267     }
 268     RegCloseKey(hKey);
 269
 270     if (bAddedAny)
 271         SendMessage(hwndTV, TVM_SORTCHILDREN, 0, (LPARAM) hItem);
 272
 273     /* Now go through all the children in the tree, and check if any have to be removed. */
 274     childItem = TreeView_GetChild(hwndTV, hItem);
 275     while (childItem) {
 276         HTREEITEM nextItem = TreeView_GetNextSibling(hwndTV, childItem);
 277         if (RefreshTreeItem(hwndTV, childItem) == FALSE) {
 278             TreeView_DeleteItem(hwndTV, childItem);
 279         }
 280         childItem = nextItem;
 281     }
 282     bSuccess = TRUE;
 283
 284 done:
 285     if (pszNodes)
 286         HeapFree(GetProcessHeap(), 0, pszNodes);
 287     if (Name)
 288         HeapFree(GetProcessHeap(), 0, Name);
 289     return bSuccess;
 290 }
 291
 292 BOOL RefreshTreeView(HWND hwndTV)
 293 {
 294     HTREEITEM hItem;
 295     HTREEITEM hSelectedItem;
 296     HCURSOR hcursorOld;
 297
 298     hSelectedItem = TreeView_GetSelection(hwndTV);
 299     hcursorOld = SetCursor(LoadCursor(NULL, IDC_WAIT));
 300     SendMessage(hwndTV, WM_SETREDRAW, FALSE, 0);
 301
 302     hItem = TreeView_GetChild(hwndTV, TreeView_GetRoot(hwndTV));
 303     while (hItem) {
 304         RefreshTreeItem(hwndTV, hItem);
 305         hItem = TreeView_GetNextSibling(hwndTV, hItem);
 306     }
 307
 308     SendMessage(hwndTV, WM_SETREDRAW, TRUE, 0);
 309     SetCursor(hcursorOld);
 310
 311     /* We reselect the currently selected node, this will prompt a refresh of the listview. */
 312     TreeView_SelectItem(hwndTV, hSelectedItem);
 313     return TRUE;
 314 }
 315
 316 HTREEITEM InsertNode(HWND hwndTV, HTREEITEM hItem, LPTSTR name)
 317 {
 318     TCHAR buf[MAX_NEW_KEY_LEN];
 319     HTREEITEM hNewItem = 0;
 320     TVITEMEX item;
 321
 322     /* Default to the current selection */
 323     if (!hItem)
 324     {
 325         hItem = TreeView_GetSelection(hwndTV);
 326         if (!hItem)
 327             return FALSE;
 328     }
 329
 330     memset(&item, 0, sizeof(item));
 331     item.hItem = hItem;
 332     item.mask = TVIF_CHILDREN | TVIF_HANDLE | TVIF_STATE;
 333     if (!TreeView_GetItem(hwndTV, &item))
 334         return FALSE;
 335
 336     if ((item.state & TVIS_EXPANDEDONCE) && (item.cChildren > 0))
 337     {
 338         hNewItem = AddEntryToTree(hwndTV, hItem, name, 0, 0);
 339         SendMessage(hwndTV, TVM_SORTCHILDREN, 0, (LPARAM) hItem);
 340     }
 341         else
 342     {
 343         item.mask = TVIF_CHILDREN | TVIF_HANDLE;
 344         item.hItem = hItem;
 345         item.cChildren = 1;
 346         if (!TreeView_SetItem(hwndTV, &item))
 347             return FALSE;
 348     }
 349
 350     TreeView_Expand(hwndTV, hItem, TVE_EXPAND);
 351     if (!hNewItem)
 352     {
 353         for(hNewItem = TreeView_GetChild(hwndTV, hItem); hNewItem; hNewItem = TreeView_GetNextSibling(hwndTV, hNewItem))
 354         {
 355             item.mask = TVIF_HANDLE | TVIF_TEXT;
 356             item.hItem = hNewItem;
 357             item.pszText = buf;
 358             item.cchTextMax = COUNT_OF(buf);
 359             if (!TreeView_GetItem(hwndTV, &item)) continue;
 360             if (lstrcmp(name, item.pszText) == 0) break;
 361         }
 362     }
 363     if (hNewItem) TreeView_SelectItem(hwndTV, hNewItem);
 364
 365     return hNewItem;
 366 }
 367
 368 HWND StartKeyRename(HWND hwndTV)
 369 {
 370     HTREEITEM hItem;
 371
 372     if(!(hItem = TreeView_GetSelection(hwndTV))) return 0;
 373     return TreeView_EditLabel(hwndTV, hItem);
 374 }
 375
 376 static BOOL InitTreeViewItems(HWND hwndTV, LPTSTR pHostName)
 377 {
 378     TVITEM tvi;
 379     TVINSERTSTRUCT tvins;
 380     HTREEITEM hRoot;
 381
 382     tvi.mask = TVIF_TEXT | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_CHILDREN | TVIF_PARAM;
 383     /* Set the text of the item.  */
 384     tvi.pszText = pHostName;
 385     tvi.cchTextMax = lstrlen(tvi.pszText);
 386     /* Assume the item is not a parent item, so give it an image.  */
 387     tvi.iImage = Image_Root;
 388     tvi.iSelectedImage = Image_Root;
 389     tvi.cChildren = 5;
 390     /* Save the heading level in the item's application-defined data area.  */
 391     tvi.lParam = (LPARAM)NULL;
 392     tvins.DUMMYUNIONNAME.item = tvi;
 393     tvins.hInsertAfter = (HTREEITEM)TVI_FIRST;
 394     tvins.hParent = TVI_ROOT;
 395     /* Add the item to the tree view control.  */
 396     if (!(hRoot = TreeView_InsertItem(hwndTV, &tvins))) return FALSE;
 397
 398     if (!AddEntryToTree(hwndTV, hRoot, _T("HKEY_CLASSES_ROOT"), HKEY_CLASSES_ROOT, 1)) return FALSE;
 399     if (!AddEntryToTree(hwndTV, hRoot, _T("HKEY_CURRENT_USER"), HKEY_CURRENT_USER, 1)) return FALSE;
 400     if (!AddEntryToTree(hwndTV, hRoot, _T("HKEY_LOCAL_MACHINE"), HKEY_LOCAL_MACHINE, 1)) return FALSE;
 401     if (!AddEntryToTree(hwndTV, hRoot, _T("HKEY_USERS"), HKEY_USERS, 1)) return FALSE;
 402     if (!AddEntryToTree(hwndTV, hRoot, _T("HKEY_CURRENT_CONFIG"), HKEY_CURRENT_CONFIG, 1)) return FALSE;
 403
 404         if (GetVersion() & 0x80000000)
 405     {
 406         /* Win9x specific key */
 407         if (!AddEntryToTree(hwndTV, hRoot, _T("HKEY_DYN_DATA"), HKEY_DYN_DATA, 1)) return FALSE;
 408         }
 409
 410     /* expand and select host name */
 411     TreeView_Expand(hwndTV, hRoot, TVE_EXPAND);
 412     TreeView_Select(hwndTV, hRoot, TVGN_CARET);
 413     return TRUE;
 414 }
 415
 416
 417 /*
 418  * InitTreeViewImageLists - creates an image list, adds three bitmaps
 419  * to it, and associates the image list with a tree view control.
 420  * Returns TRUE if successful, or FALSE otherwise.
 421  * hwndTV - handle to the tree view control.
 422  */
 423 static BOOL InitTreeViewImageLists(HWND hwndTV)
 424 {
 425     HIMAGELIST himl;  /* handle to image list  */
 426     HICON hico;       /* handle to icon  */
 427
 428     /* Create the image list.  */
 429     if ((himl = ImageList_Create(CX_ICON, CY_ICON,
 430                                  ILC_MASK, 0, NUM_ICONS)) == NULL)
 431         return FALSE;
 432
 433     /* Add the open file, closed file, and document bitmaps.  */
 434     hico = LoadIcon(hInst, MAKEINTRESOURCE(IDI_OPEN_FILE));
 435     Image_Open = ImageList_AddIcon(himl, hico);
 436
 437     hico = LoadIcon(hInst, MAKEINTRESOURCE(IDI_CLOSED_FILE));
 438     Image_Closed = ImageList_AddIcon(himl, hico);
 439
 440     hico = LoadIcon(hInst, MAKEINTRESOURCE(IDI_ROOT));
 441     Image_Root = ImageList_AddIcon(himl, hico);
 442
 443     /* Fail if not all of the images were added.  */
 444     if (ImageList_GetImageCount(himl) < NUM_ICONS)
 445     {
 446       return FALSE;
 447     }
 448
 449     /* Associate the image list with the tree view control.  */
 450     TreeView_SetImageList(hwndTV, himl, TVSIL_NORMAL);
 451
 452     return TRUE;
 453 }
 454
 455 BOOL OnTreeExpanding(HWND hwndTV, NMTREEVIEW* pnmtv)
 456 {
 457     DWORD dwCount, dwIndex, dwMaxSubKeyLen;
 458     HKEY hRoot, hNewKey, hKey;
 459     LPCTSTR keyPath;
 460     LPTSTR Name;
 461     LONG errCode;
 462     HCURSOR hcursorOld;
 463
 464     static int expanding;
 465     if (expanding) return FALSE;
 466     if (pnmtv->itemNew.state & TVIS_EXPANDEDONCE ) {
 467         return TRUE;
 468     }
 469     expanding = TRUE;
 470     hcursorOld = SetCursor(LoadCursor(NULL, IDC_WAIT));
 471     SendMessage(hwndTV, WM_SETREDRAW, FALSE, 0);
 472
 473     keyPath = GetItemPath(hwndTV, pnmtv->itemNew.hItem, &hRoot);
 474     if (!keyPath) goto done;
 475
 476     if (*keyPath) {
 477         errCode = RegOpenKeyEx(hRoot, keyPath, 0, KEY_READ, &hNewKey);
 478         if (errCode != ERROR_SUCCESS) goto done;
 479     } else {
 480         hNewKey = hRoot;
 481     }
 482
 483     errCode = RegQueryInfoKey(hNewKey, 0, 0, 0, &dwCount, &dwMaxSubKeyLen, 0, 0, 0, 0, 0, 0);
 484     if (errCode != ERROR_SUCCESS) goto done;
 485     dwMaxSubKeyLen++; /* account for the \0 terminator */
 486     Name = HeapAlloc(GetProcessHeap(), 0, dwMaxSubKeyLen * sizeof(TCHAR));
 487     if (!Name) goto done;
 488
 489     for (dwIndex = 0; dwIndex < dwCount; dwIndex++) {
 490         DWORD cName = dwMaxSubKeyLen, dwSubCount;
 491
 492         errCode = RegEnumKeyEx(hNewKey, dwIndex, Name, &cName, 0, 0, 0, 0);
 493         if (errCode != ERROR_SUCCESS) continue;
 494         errCode = RegOpenKeyEx(hNewKey, Name, 0, KEY_QUERY_VALUE, &hKey);
 495         if (errCode == ERROR_SUCCESS) {
 496             errCode = RegQueryInfoKey(hKey, 0, 0, 0, &dwSubCount, 0, 0, 0, 0, 0, 0, 0);
 497             RegCloseKey(hKey);
 498         }
 499         if (errCode != ERROR_SUCCESS) dwSubCount = 0;
 500         AddEntryToTree(hwndTV, pnmtv->itemNew.hItem, Name, NULL, dwSubCount);
 501     }
 502
 503     SendMessage(hwndTV, TVM_SORTCHILDREN, 0, (LPARAM)pnmtv->itemNew.hItem);
 504
 505     RegCloseKey(hNewKey);
 506     HeapFree(GetProcessHeap(), 0, Name);
 507
 508 done:
 509     SendMessage(hwndTV, WM_SETREDRAW, TRUE, 0);
 510     SetCursor(hcursorOld);
 511     expanding = FALSE;
 512
 513     return TRUE;
 514 }
 515
 516
 517 BOOL CreateNewKey(HWND hwndTV, HTREEITEM hItem)
 518 {
 519     TCHAR szNewKeyFormat[128];
 520     TCHAR szNewKey[128];
 521     LPCTSTR pszKeyPath;
 522     int iIndex = 1;
 523     HKEY hRootKey;
 524     HKEY hKey = NULL;
 525     HKEY hNewKey = NULL;
 526     BOOL bSuccess = FALSE;
 527     LONG lResult;
 528     DWORD dwDisposition;
 529     HTREEITEM hNewItem;
 530
 531     pszKeyPath = GetItemPath(g_pChildWnd->hTreeWnd, hItem, &hRootKey);
 532     if (RegOpenKey(hRootKey, pszKeyPath, &hKey) != ERROR_SUCCESS)
 533         goto done;
 534
 535     if (LoadString(hInst, IDS_NEW_KEY, szNewKeyFormat, sizeof(szNewKeyFormat) / sizeof(szNewKeyFormat[0])) <= 0)
 536         goto done;
 537
 538     /* Need to create a new key with a unique name */
 539     do
 540     {
 541         _sntprintf(szNewKey, sizeof(szNewKey) / sizeof(szNewKey[0]), szNewKeyFormat, iIndex++);
 542         lResult = RegCreateKeyEx(hKey, szNewKey, 0, NULL, 0, KEY_ALL_ACCESS, NULL, &hNewKey, &dwDisposition);
 543         if (hNewKey && (dwDisposition == REG_OPENED_EXISTING_KEY))
 544         {
 545             RegCloseKey(hNewKey);
 546             hNewKey = NULL;
 547         }
 548     }
 549     while(!hNewKey);
 550
 551     /* Insert the new key */
 552     hNewItem = InsertNode(hwndTV, hItem, szNewKey);
 553     if (!hNewItem)
 554         goto done;
 555
 556     /* The new key's name is probably not appropriate yet */
 557     TreeView_EditLabel(hwndTV, hNewItem);
 558
 559     bSuccess = TRUE;
 560
 561 done:
 562     if (hKey)
 563         RegCloseKey(hKey);
 564     if (hNewKey)
 565         RegCloseKey(hNewKey);
 566     return bSuccess;
 567 }
 568
 569
 570 /*
 571  * CreateTreeView - creates a tree view control.
 572  * Returns the handle to the new control if successful, or NULL otherwise.
 573  * hwndParent - handle to the control's parent window.
 574  */
 575 HWND CreateTreeView(HWND hwndParent, LPTSTR pHostName, HMENU id)
 576 {
 577     RECT rcClient;
 578     HWND hwndTV;
 579
 580     /* Get the dimensions of the parent window's client area, and create the tree view control.  */
 581     GetClientRect(hwndParent, &rcClient);
 582     hwndTV = CreateWindowEx(WS_EX_CLIENTEDGE, WC_TREEVIEW, NULL,
 583                             WS_VISIBLE | WS_CHILD | WS_TABSTOP | TVS_HASLINES | TVS_HASBUTTONS | TVS_LINESATROOT | TVS_EDITLABELS,
 584                             0, 0, rcClient.right, rcClient.bottom,
 585                             hwndParent, id, hInst, NULL);
 586     /* Initialize the image list, and add items to the control.  */
 587     if (!InitTreeViewImageLists(hwndTV) || !InitTreeViewItems(hwndTV, pHostName)) {
 588         DestroyWindow(hwndTV);
 589         return NULL;
 590     }
 591     return hwndTV;
 592 }
 593
 594 void DestroyTreeView() {
 595         if (pathBuffer)
 596                 HeapFree(GetProcessHeap(), 0, pathBuffer);
 597 }
 598
 599 BOOL SelectNode(HWND hwndTV, LPCTSTR keyPath)
 600 {
 601         HTREEITEM hRoot, hItem;
 602         HTREEITEM hChildItem;
 603         TCHAR szPathPart[128];
 604         TCHAR szBuffer[128];
 605         LPCTSTR s;
 606         TVITEM tvi;
 607
 608     /* Total no-good hack */
 609     if (!_tcsncmp(keyPath, _T("My Computer\\"), 12))
 610         keyPath += 12;
 611
 612         hRoot = TreeView_GetRoot(hwndTV);
 613         hItem = hRoot;
 614
 615         while(keyPath[0])
 616         {
 617                 s = _tcschr(keyPath, '\\');
 618                 lstrcpyn(szPathPart, keyPath, s ? s - keyPath + 1 : _tcslen(keyPath) + 1);
 619
 620                 /* Special case for root to expand root key abbreviations */
 621                 if (hItem == hRoot)
 622                 {
 623                         if (!_tcscmp(szPathPart, TEXT("HKCR")))
 624                                 _tcscpy(szPathPart, TEXT("HKEY_CLASSES_ROOT"));
 625                         else if (!_tcscmp(szPathPart, TEXT("HKCU")))
 626                                 _tcscpy(szPathPart, TEXT("HKEY_CURRENT_USER"));
 627                         else if (!_tcscmp(szPathPart, TEXT("HKLM")))
 628                                 _tcscpy(szPathPart, TEXT("HKEY_LOCAL_MACHINE"));
 629                         else if (!_tcscmp(szPathPart, TEXT("HKU")))
 630                                 _tcscpy(szPathPart, TEXT("HKEY_USERS"));
 631                         else if (!_tcscmp(szPathPart, TEXT("HKCC")))
 632                                 _tcscpy(szPathPart, TEXT("HKEY_CURRENT_CONFIG"));
 633                         else if (!_tcscmp(szPathPart, TEXT("HKDD")))
 634                                 _tcscpy(szPathPart, TEXT("HKEY_DYN_DATA"));
 635                 }
 636
 637                 for (hChildItem = TreeView_GetChild(hwndTV, hItem); hChildItem;
 638                         hChildItem = TreeView_GetNextSibling(hwndTV, hChildItem))
 639                 {
 640                         memset(&tvi, 0, sizeof(tvi));
 641                         tvi.hItem = hChildItem;
 642                         tvi.mask = TVIF_TEXT | TVIF_CHILDREN;
 643                         tvi.pszText = szBuffer;
 644                         tvi.cchTextMax = sizeof(szBuffer) / sizeof(szBuffer[0]);
 645
 646                         TreeView_GetItem(hwndTV, &tvi);
 647
 648                         if (!_tcscmp(szBuffer, szPathPart))
 649                                 break;
 650                 }
 651
 652                 if (!hChildItem)
 653                         return FALSE;
 654
 655                 if (tvi.cChildren > 0)
 656                 {
 657                         if (!TreeView_Expand(hwndTV, hChildItem, TVE_EXPAND))
 658                                 return FALSE;
 659                 }
 660
 661                 keyPath = s ? s + 1 : _T("");
 662                 hItem = hChildItem;
 663         }
 664
 665         TreeView_SelectItem(hwndTV, hItem);
 666         TreeView_EnsureVisible(hwndTV, hItem);
 667
 668         return TRUE;
 669 }
 670