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)) return NULL;
 105     return pathBuffer;
 106 }
 107
 108 /* Add an entry to the tree. Only give hKey for root nodes (HKEY_ constants) */
 109 static HTREEITEM AddEntryToTree(HWND hwndTV, HTREEITEM hParent, LPTSTR label, HKEY hKey, DWORD dwChildren)
 110 {
 111     TVITEM tvi;
 112     TVINSERTSTRUCT tvins;
 113
 114     if (hKey) {
 115         if (RegQueryInfoKey(hKey, 0, 0, 0, &dwChildren, 0, 0, 0, 0, 0, 0, 0) != ERROR_SUCCESS) {
 116             dwChildren = 0;
 117         }
 118     }
 119
 120     tvi.mask = TVIF_TEXT | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_CHILDREN | TVIF_PARAM;
 121     tvi.pszText = label;
 122     tvi.cchTextMax = lstrlen(tvi.pszText);
 123     tvi.iImage = Image_Closed;
 124     tvi.iSelectedImage = Image_Open;
 125     tvi.cChildren = dwChildren;
 126     tvi.lParam = (LPARAM)hKey;
 127     tvins.u.item = tvi;
 128     tvins.hInsertAfter = (HTREEITEM)(hKey ? TVI_LAST : TVI_FIRST);
 129     tvins.hParent = hParent;
 130     return TreeView_InsertItem(hwndTV, &tvins);
 131 }
 132
 133 static BOOL RefreshTreeItem(HWND hwndTV, HTREEITEM hItem)
 134 {
 135     HKEY hRoot, hKey, hSubKey;
 136     HTREEITEM childItem;
 137     LPCTSTR KeyPath;
 138     DWORD dwCount, dwIndex, dwMaxSubKeyLen;
 139     LPTSTR Name = NULL;
 140     TVITEM tvItem;
 141     LPTSTR pszNodes = NULL;
 142     BOOL bSuccess = FALSE;
 143     LPTSTR s;
 144     BOOL bAddedAny;
 145
 146     KeyPath = GetItemPath(hwndTV, hItem, &hRoot);
 147
 148     if (*KeyPath) {
 149         if (RegOpenKeyEx(hRoot, KeyPath, 0, KEY_READ, &hKey) != ERROR_SUCCESS) {
 150             goto done;
 151         }
 152     } else {
 153         hKey = hRoot;
 154     }
 155
 156     if (RegQueryInfoKey(hKey, 0, 0, 0, &dwCount, &dwMaxSubKeyLen, 0, 0, 0, 0, 0, 0) != ERROR_SUCCESS) {
 157         goto done;
 158     }
 159
 160     /* Set the number of children again */
 161     tvItem.mask = TVIF_CHILDREN;
 162     tvItem.hItem = hItem;
 163     tvItem.cChildren = dwCount;
 164     if (!TreeView_SetItem(hwndTV, &tvItem)) {
 165         goto done;
 166     }
 167
 168     /* We don't have to bother with the rest if it's not expanded. */
 169     if (TreeView_GetItemState(hwndTV, hItem, TVIS_EXPANDED) == 0) {
 170         RegCloseKey(hKey);
 171         bSuccess = TRUE;
 172         goto done;
 173     }
 174
 175     dwMaxSubKeyLen++; /* account for the \0 terminator */
 176     if (!(Name = HeapAlloc(GetProcessHeap(), 0, dwMaxSubKeyLen * sizeof(TCHAR)))) {
 177         goto done;
 178     }
 179     tvItem.cchTextMax = dwMaxSubKeyLen;
 180     if (!(tvItem.pszText = HeapAlloc(GetProcessHeap(), 0, dwMaxSubKeyLen * sizeof(TCHAR)))) {
 181         goto done;
 182     }
 183
 184     /* Get all of the tree node siblings in one contiguous block of memory */
 185     {
 186         DWORD dwPhysicalSize = 0;
 187         DWORD dwActualSize = 0;
 188         DWORD dwNewPhysicalSize;
 189         LPTSTR pszNewNodes;
 190         DWORD dwStep = 10000;
 191
 192         for (childItem = TreeView_GetChild(hwndTV, hItem); childItem;
 193                 childItem = TreeView_GetNextSibling(hwndTV, childItem)) {
 194
 195             if (dwActualSize + dwMaxSubKeyLen + 1 > dwPhysicalSize)
 196             {
 197                 dwNewPhysicalSize = dwActualSize + dwMaxSubKeyLen + 1 + dwStep;
 198
 199                 if (pszNodes)
 200                     pszNewNodes = (LPTSTR) HeapReAlloc(GetProcessHeap(), 0, pszNodes, dwNewPhysicalSize * sizeof(TCHAR));
 201                 else
 202                     pszNewNodes = (LPTSTR) HeapAlloc(GetProcessHeap(), 0, dwNewPhysicalSize * sizeof(TCHAR));
 203                 if (!pszNewNodes)
 204                     goto done;
 205
 206                 dwPhysicalSize = dwNewPhysicalSize;
 207                 pszNodes = pszNewNodes;
 208             }
 209
 210             tvItem.mask = TVIF_TEXT;
 211             tvItem.hItem = childItem;
 212             tvItem.pszText = &pszNodes[dwActualSize];
 213             tvItem.cchTextMax = dwPhysicalSize - dwActualSize;
 214             if (!TreeView_GetItem(hwndTV, &tvItem))
 215                 goto done;
 216
 217             dwActualSize += _tcslen(&pszNodes[dwActualSize]) + 1;
 218         }
 219
 220         if (pszNodes)
 221             pszNodes[dwActualSize] = '\0';
 222     }
 223
 224     /* Now go through all the children in the registry, and check if any have to be added. */
 225     bAddedAny = FALSE;
 226     for (dwIndex = 0; dwIndex < dwCount; dwIndex++) {
 227         DWORD cName = dwMaxSubKeyLen, dwSubCount;
 228         BOOL found;
 229
 230         found = FALSE;
 231         if (RegEnumKeyEx(hKey, dwIndex, Name, &cName, 0, 0, 0, NULL) != ERROR_SUCCESS) {
 232             continue;
 233         }
 234
 235         /* Check if the node is already in there. */
 236         if (pszNodes) {
 237             for (s = pszNodes; *s; s += _tcslen(s) + 1) {
 238                 if (!_tcscmp(s, Name)) {
 239                     found = TRUE;
 240                     break;
 241                 }
 242             }
 243         }
 244
 245         if (found == FALSE) {
 246             /* Find the number of children of the node. */
 247             dwSubCount = 0;
 248             if (RegOpenKeyEx(hKey, Name, 0, KEY_QUERY_VALUE, &hSubKey) == ERROR_SUCCESS) {
 249                 if (RegQueryInfoKey(hSubKey, 0, 0, 0, &dwSubCount, 0, 0, 0, 0, 0, 0, 0) != ERROR_SUCCESS) {
 250                     dwSubCount = 0;
 251                 }
 252                 RegCloseKey(hSubKey);
 253             }
 254
 255             AddEntryToTree(hwndTV, hItem, Name, NULL, dwSubCount);
 256             bAddedAny = TRUE;
 257         }
 258     }
 259     RegCloseKey(hKey);
 260
 261     if (bAddedAny)
 262         SendMessage(hwndTV, TVM_SORTCHILDREN, 0, (LPARAM) hItem);
 263
 264     /* Now go through all the children in the tree, and check if any have to be removed. */
 265     childItem = TreeView_GetChild(hwndTV, hItem);
 266     while (childItem) {
 267         HTREEITEM nextItem = TreeView_GetNextSibling(hwndTV, childItem);
 268         if (RefreshTreeItem(hwndTV, childItem) == FALSE) {
 269             TreeView_DeleteItem(hwndTV, childItem);
 270         }
 271         childItem = nextItem;
 272     }
 273     bSuccess = TRUE;
 274
 275 done:
 276     if (pszNodes)
 277         HeapFree(GetProcessHeap(), 0, pszNodes);
 278     if (Name)
 279         HeapFree(GetProcessHeap(), 0, Name);
 280     return bSuccess;
 281 }
 282
 283 BOOL RefreshTreeView(HWND hwndTV)
 284 {
 285     HTREEITEM hItem;
 286     HTREEITEM hSelectedItem;
 287     HCURSOR hcursorOld;
 288
 289     hSelectedItem = TreeView_GetSelection(hwndTV);
 290     hcursorOld = SetCursor(LoadCursor(NULL, IDC_WAIT));
 291     SendMessage(hwndTV, WM_SETREDRAW, FALSE, 0);
 292
 293     hItem = TreeView_GetChild(hwndTV, TreeView_GetRoot(hwndTV));
 294     while (hItem) {
 295         RefreshTreeItem(hwndTV, hItem);
 296         hItem = TreeView_GetNextSibling(hwndTV, hItem);
 297     }
 298
 299     SendMessage(hwndTV, WM_SETREDRAW, TRUE, 0);
 300     SetCursor(hcursorOld);
 301
 302     /* We reselect the currently selected node, this will prompt a refresh of the listview. */
 303     TreeView_SelectItem(hwndTV, hSelectedItem);
 304     return TRUE;
 305 }
 306
 307 HTREEITEM InsertNode(HWND hwndTV, HTREEITEM hItem, LPTSTR name)
 308 {
 309     TCHAR buf[MAX_NEW_KEY_LEN];
 310     HTREEITEM hNewItem = 0;
 311     TVITEMEX item;
 312
 313     if (!hItem) hItem = TreeView_GetSelection(hwndTV);
 314     if (!hItem) return FALSE;
 315     if (TreeView_GetItemState(hwndTV, hItem, TVIS_EXPANDEDONCE)) {
 316         hNewItem = AddEntryToTree(hwndTV, hItem, name, 0, 0);
 317         SendMessage(hwndTV, TVM_SORTCHILDREN, 0, (LPARAM) hItem);
 318     } else {
 319         item.mask = TVIF_CHILDREN | TVIF_HANDLE;
 320         item.hItem = hItem;
 321         if (!TreeView_GetItem(hwndTV, &item)) return FALSE;
 322         item.cChildren = 1;
 323         if (!TreeView_SetItem(hwndTV, &item)) return FALSE;
 324     }
 325     TreeView_Expand(hwndTV, hItem, TVE_EXPAND);
 326     if (!hNewItem) {
 327         for(hNewItem = TreeView_GetChild(hwndTV, hItem); hNewItem; hNewItem = TreeView_GetNextSibling(hwndTV, hNewItem)) {
 328             item.mask = TVIF_HANDLE | TVIF_TEXT;
 329             item.hItem = hNewItem;
 330             item.pszText = buf;
 331             item.cchTextMax = COUNT_OF(buf);
 332             if (!TreeView_GetItem(hwndTV, &item)) continue;
 333             if (lstrcmp(name, item.pszText) == 0) break;
 334         }
 335     }
 336     if (hNewItem) TreeView_SelectItem(hwndTV, hNewItem);
 337
 338     return hNewItem;
 339 }
 340
 341 HWND StartKeyRename(HWND hwndTV)
 342 {
 343     HTREEITEM hItem;
 344
 345     if(!(hItem = TreeView_GetSelection(hwndTV))) return 0;
 346     return TreeView_EditLabel(hwndTV, hItem);
 347 }
 348
 349 static BOOL InitTreeViewItems(HWND hwndTV, LPTSTR pHostName)
 350 {
 351     TVITEM tvi;
 352     TVINSERTSTRUCT tvins;
 353     HTREEITEM hRoot;
 354
 355     tvi.mask = TVIF_TEXT | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_CHILDREN | TVIF_PARAM;
 356     /* Set the text of the item.  */
 357     tvi.pszText = pHostName;
 358     tvi.cchTextMax = lstrlen(tvi.pszText);
 359     /* Assume the item is not a parent item, so give it an image.  */
 360     tvi.iImage = Image_Root;
 361     tvi.iSelectedImage = Image_Root;
 362     tvi.cChildren = 5;
 363     /* Save the heading level in the item's application-defined data area.  */
 364     tvi.lParam = (LPARAM)NULL;
 365     tvins.u.item = tvi;
 366     tvins.hInsertAfter = (HTREEITEM)TVI_FIRST;
 367     tvins.hParent = TVI_ROOT;
 368     /* Add the item to the tree view control.  */
 369     if (!(hRoot = TreeView_InsertItem(hwndTV, &tvins))) return FALSE;
 370
 371     if (!AddEntryToTree(hwndTV, hRoot, _T("HKEY_CLASSES_ROOT"), HKEY_CLASSES_ROOT, 1)) return FALSE;
 372     if (!AddEntryToTree(hwndTV, hRoot, _T("HKEY_CURRENT_USER"), HKEY_CURRENT_USER, 1)) return FALSE;
 373     if (!AddEntryToTree(hwndTV, hRoot, _T("HKEY_LOCAL_MACHINE"), HKEY_LOCAL_MACHINE, 1)) return FALSE;
 374     if (!AddEntryToTree(hwndTV, hRoot, _T("HKEY_USERS"), HKEY_USERS, 1)) return FALSE;
 375     if (!AddEntryToTree(hwndTV, hRoot, _T("HKEY_CURRENT_CONFIG"), HKEY_CURRENT_CONFIG, 1)) return FALSE;
 376
 377         if (GetVersion() & 0x80000000)
 378     {
 379         /* Win9x specific key */
 380         if (!AddEntryToTree(hwndTV, hRoot, _T("HKEY_DYN_DATA"), HKEY_DYN_DATA, 1)) return FALSE;
 381         }
 382
 383     /* expand and select host name */
 384     TreeView_Expand(hwndTV, hRoot, TVE_EXPAND);
 385     TreeView_Select(hwndTV, hRoot, TVGN_CARET);
 386     return TRUE;
 387 }
 388
 389
 390 /*
 391  * InitTreeViewImageLists - creates an image list, adds three bitmaps
 392  * to it, and associates the image list with a tree view control.
 393  * Returns TRUE if successful, or FALSE otherwise.
 394  * hwndTV - handle to the tree view control.
 395  */
 396 static BOOL InitTreeViewImageLists(HWND hwndTV)
 397 {
 398     HIMAGELIST himl;  /* handle to image list  */
 399     HICON hico;       /* handle to icon  */
 400
 401     /* Create the image list.  */
 402     if ((himl = ImageList_Create(CX_ICON, CY_ICON,
 403                                  ILC_MASK, 0, NUM_ICONS)) == NULL)
 404         return FALSE;
 405
 406     /* Add the open file, closed file, and document bitmaps.  */
 407     hico = LoadIcon(hInst, MAKEINTRESOURCE(IDI_OPEN_FILE));
 408     Image_Open = ImageList_AddIcon(himl, hico);
 409
 410     hico = LoadIcon(hInst, MAKEINTRESOURCE(IDI_CLOSED_FILE));
 411     Image_Closed = ImageList_AddIcon(himl, hico);
 412
 413     hico = LoadIcon(hInst, MAKEINTRESOURCE(IDI_ROOT));
 414     Image_Root = ImageList_AddIcon(himl, hico);
 415
 416     /* Fail if not all of the images were added.  */
 417     if (ImageList_GetImageCount(himl) < NUM_ICONS)
 418     {
 419       return FALSE;
 420     }
 421
 422     /* Associate the image list with the tree view control.  */
 423     TreeView_SetImageList(hwndTV, himl, TVSIL_NORMAL);
 424
 425     return TRUE;
 426 }
 427
 428 BOOL OnTreeExpanding(HWND hwndTV, NMTREEVIEW* pnmtv)
 429 {
 430     DWORD dwCount, dwIndex, dwMaxSubKeyLen;
 431     HKEY hRoot, hNewKey, hKey;
 432     LPCTSTR keyPath;
 433     LPTSTR Name;
 434     LONG errCode;
 435     HCURSOR hcursorOld;
 436
 437     static int expanding;
 438     if (expanding) return FALSE;
 439     if (pnmtv->itemNew.state & TVIS_EXPANDEDONCE ) {
 440         return TRUE;
 441     }
 442     expanding = TRUE;
 443     hcursorOld = SetCursor(LoadCursor(NULL, IDC_WAIT));
 444     SendMessage(hwndTV, WM_SETREDRAW, FALSE, 0);
 445
 446     keyPath = GetItemPath(hwndTV, pnmtv->itemNew.hItem, &hRoot);
 447     if (!keyPath) goto done;
 448
 449     if (*keyPath) {
 450         errCode = RegOpenKeyEx(hRoot, keyPath, 0, KEY_READ, &hNewKey);
 451         if (errCode != ERROR_SUCCESS) goto done;
 452     } else {
 453         hNewKey = hRoot;
 454     }
 455
 456     errCode = RegQueryInfoKey(hNewKey, 0, 0, 0, &dwCount, &dwMaxSubKeyLen, 0, 0, 0, 0, 0, 0);
 457     if (errCode != ERROR_SUCCESS) goto done;
 458     dwMaxSubKeyLen++; /* account for the \0 terminator */
 459     Name = HeapAlloc(GetProcessHeap(), 0, dwMaxSubKeyLen * sizeof(TCHAR));
 460     if (!Name) goto done;
 461
 462     for (dwIndex = 0; dwIndex < dwCount; dwIndex++) {
 463         DWORD cName = dwMaxSubKeyLen, dwSubCount;
 464
 465         errCode = RegEnumKeyEx(hNewKey, dwIndex, Name, &cName, 0, 0, 0, 0);
 466         if (errCode != ERROR_SUCCESS) continue;
 467         errCode = RegOpenKeyEx(hNewKey, Name, 0, KEY_QUERY_VALUE, &hKey);
 468         if (errCode == ERROR_SUCCESS) {
 469             errCode = RegQueryInfoKey(hKey, 0, 0, 0, &dwSubCount, 0, 0, 0, 0, 0, 0, 0);
 470             RegCloseKey(hKey);
 471         }
 472         if (errCode != ERROR_SUCCESS) dwSubCount = 0;
 473         AddEntryToTree(hwndTV, pnmtv->itemNew.hItem, Name, NULL, dwSubCount);
 474     }
 475
 476     SendMessage(hwndTV, TVM_SORTCHILDREN, 0, (LPARAM)pnmtv->itemNew.hItem);
 477
 478     RegCloseKey(hNewKey);
 479     HeapFree(GetProcessHeap(), 0, Name);
 480
 481 done:
 482     SendMessage(hwndTV, WM_SETREDRAW, TRUE, 0);
 483     SetCursor(hcursorOld);
 484     expanding = FALSE;
 485
 486     return TRUE;
 487 }
 488
 489
 490 BOOL CreateNewKey(HWND hwndTV, HTREEITEM hItem)
 491 {
 492     TCHAR szNewKeyFormat[128];
 493     TCHAR szNewKey[128];
 494     LPCTSTR pszKeyPath;
 495     int iIndex = 1;
 496     HKEY hRootKey;
 497     HKEY hKey = NULL;
 498     HKEY hNewKey = NULL;
 499     BOOL bSuccess = FALSE;
 500     LONG lResult;
 501     DWORD dwDisposition;
 502     HTREEITEM hNewItem;
 503
 504     pszKeyPath = GetItemPath(g_pChildWnd->hTreeWnd, hItem, &hRootKey);
 505     if (RegOpenKey(hRootKey, pszKeyPath, &hKey) != ERROR_SUCCESS)
 506         goto done;
 507
 508     if (LoadString(hInst, IDS_NEW_KEY, szNewKeyFormat, sizeof(szNewKeyFormat) / sizeof(szNewKeyFormat[0])) <= 0)
 509         goto done;
 510
 511     do
 512     {
 513         _sntprintf(szNewKey, sizeof(szNewKey) / sizeof(szNewKey[0]), szNewKeyFormat, iIndex++);
 514         lResult = RegCreateKeyEx(hKey, szNewKey, 0, NULL, 0, KEY_ALL_ACCESS, NULL, &hNewKey, &dwDisposition);
 515         if (hNewKey && (dwDisposition == REG_OPENED_EXISTING_KEY))
 516         {
 517             RegCloseKey(hNewKey);
 518             hNewKey = NULL;
 519         }
 520     }
 521     while(!hNewKey);
 522
 523     hNewItem = AddEntryToTree(hwndTV, hItem, szNewKey, NULL, 0);
 524     if (!hNewItem)
 525         goto done;
 526     SendMessage(hwndTV, TVM_SORTCHILDREN, 0, (LPARAM) hItem);
 527     TreeView_EditLabel(hwndTV, hNewItem);
 528
 529     bSuccess = TRUE;
 530
 531 done:
 532     if (hKey)
 533         RegCloseKey(hKey);
 534     if (hNewKey)
 535         RegCloseKey(hNewKey);
 536     return bSuccess;
 537 }
 538
 539
 540 /*
 541  * CreateTreeView - creates a tree view control.
 542  * Returns the handle to the new control if successful, or NULL otherwise.
 543  * hwndParent - handle to the control's parent window.
 544  */
 545 HWND CreateTreeView(HWND hwndParent, LPTSTR pHostName, int id)
 546 {
 547     RECT rcClient;
 548     HWND hwndTV;
 549
 550     /* Get the dimensions of the parent window's client area, and create the tree view control.  */
 551     GetClientRect(hwndParent, &rcClient);
 552     hwndTV = CreateWindowEx(WS_EX_CLIENTEDGE, WC_TREEVIEW, NULL,
 553                             WS_VISIBLE | WS_CHILD | WS_TABSTOP | TVS_HASLINES | TVS_HASBUTTONS | TVS_LINESATROOT | TVS_EDITLABELS,
 554                             0, 0, rcClient.right, rcClient.bottom,
 555                             hwndParent, (HMENU)id, hInst, NULL);
 556     /* Initialize the image list, and add items to the control.  */
 557     if (!InitTreeViewImageLists(hwndTV) || !InitTreeViewItems(hwndTV, pHostName)) {
 558         DestroyWindow(hwndTV);
 559         return NULL;
 560     }
 561     return hwndTV;
 562 }
 563
 564 BOOL SelectNode(HWND hwndTV, LPCTSTR keyPath)
 565 {
 566         HTREEITEM hRoot, hItem;
 567         HTREEITEM hChildItem;
 568         TCHAR szPathPart[128];
 569         TCHAR szBuffer[128];
 570         LPCTSTR s;
 571         TVITEM tvi;
 572
 573         hRoot = TreeView_GetRoot(hwndTV);
 574         hItem = hRoot;
 575
 576         while(keyPath[0])
 577         {
 578                 s = _tcschr(keyPath, '\\');
 579                 lstrcpyn(szPathPart, keyPath, s ? s - keyPath + 1 : _tcslen(keyPath) + 1);
 580
 581                 /* Special case for root to expand root key abbreviations */
 582                 if (hItem == hRoot)
 583                 {
 584                         if (!_tcscmp(szPathPart, TEXT("HKCR")))
 585                                 _tcscpy(szPathPart, TEXT("HKEY_CLASSES_ROOT"));
 586                         else if (!_tcscmp(szPathPart, TEXT("HKCU")))
 587                                 _tcscpy(szPathPart, TEXT("HKEY_CURRENT_USER"));
 588                         else if (!_tcscmp(szPathPart, TEXT("HKLM")))
 589                                 _tcscpy(szPathPart, TEXT("HKEY_LOCAL_MACHINE"));
 590                         else if (!_tcscmp(szPathPart, TEXT("HKU")))
 591                                 _tcscpy(szPathPart, TEXT("HKEY_USERS"));
 592                         else if (!_tcscmp(szPathPart, TEXT("HKCC")))
 593                                 _tcscpy(szPathPart, TEXT("HKEY_CURRENT_CONFIG"));
 594                         else if (!_tcscmp(szPathPart, TEXT("HKDD")))
 595                                 _tcscpy(szPathPart, TEXT("HKEY_DYN_DATA"));
 596                 }
 597
 598                 for (hChildItem = TreeView_GetChild(hwndTV, hItem); hChildItem;
 599                         hChildItem = TreeView_GetNextSibling(hwndTV, hChildItem))
 600                 {
 601                         memset(&tvi, 0, sizeof(tvi));
 602                         tvi.hItem = hChildItem;
 603                         tvi.mask = TVIF_TEXT;
 604                         tvi.pszText = szBuffer;
 605                         tvi.cchTextMax = sizeof(szBuffer) / sizeof(szBuffer[0]);
 606
 607                         TreeView_GetItem(hwndTV, &tvi);
 608
 609                         if (!_tcscmp(szBuffer, szPathPart))
 610                                 break;
 611                 }
 612
 613                 if (!hChildItem)
 614                         return FALSE;
 615
 616                 if (!TreeView_Expand(hwndTV, hChildItem, TVE_EXPAND))
 617                         return FALSE;
 618
 619                 keyPath = s ? s + 1 : _T("");
 620                 hItem = hChildItem;
 621         }
 622
 623         TreeView_SelectItem(hwndTV, hItem);
 624         TreeView_EnsureVisible(hwndTV, hItem);
 625
 626         return TRUE;
 627 }
 628