programs/regedit/childwnd.c

   1 /*
   2  * Regedit child window
   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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #define WIN32_LEAN_AND_MEAN     /* Exclude rarely-used stuff from Windows headers */
  22 #include <windows.h>
  23 #include <commctrl.h>
  24
  25 #include "main.h"
  26
  27 #include "wine/debug.h"
  28
  29 WINE_DEFAULT_DEBUG_CHANNEL(regedit);
  30
  31 ChildWnd* g_pChildWnd;
  32 static int last_split;
  33
  34 static const WCHAR wszLastKey[] = L"LastKey";
  35 static const WCHAR wszKeyName[] = L"Software\\Microsoft\\Windows\\CurrentVersion\\Applets\\Regedit";
  36
  37 /*******************************************************************************
  38  * Local module support methods
  39  */
  40
  41 static LPCWSTR GetRootKeyName(HKEY hRootKey)
  42 {
  43     if(hRootKey == HKEY_CLASSES_ROOT)
  44         return reg_class_namesW[INDEX_HKEY_CLASSES_ROOT];
  45     if(hRootKey == HKEY_CURRENT_USER)
  46         return reg_class_namesW[INDEX_HKEY_CURRENT_USER];
  47     if(hRootKey == HKEY_LOCAL_MACHINE)
  48         return reg_class_namesW[INDEX_HKEY_LOCAL_MACHINE];
  49     if(hRootKey == HKEY_USERS)
  50         return reg_class_namesW[INDEX_HKEY_USERS];
  51     if(hRootKey == HKEY_CURRENT_CONFIG)
  52         return reg_class_namesW[INDEX_HKEY_CURRENT_CONFIG];
  53     if(hRootKey == HKEY_DYN_DATA)
  54         return reg_class_namesW[INDEX_HKEY_DYN_DATA];
  55     else
  56         return L"Unknown HKEY. Please report.";
  57 }
  58
  59 static void draw_splitbar(HWND hWnd, int x)
  60 {
  61     RECT rt;
  62     HDC hdc = GetDC(hWnd);
  63
  64     GetClientRect(hWnd, &rt);
  65     rt.left = x - SPLIT_WIDTH/2;
  66     rt.right = x + SPLIT_WIDTH/2+1;
  67     InvertRect(hdc, &rt);
  68     ReleaseDC(hWnd, hdc);
  69 }
  70
  71 static void ResizeWnd(int cx, int cy)
  72 {
  73     HDWP hdwp = BeginDeferWindowPos(2);
  74     RECT rt = {0, 0, cx, cy};
  75
  76     cx = g_pChildWnd->nSplitPos + SPLIT_WIDTH/2;
  77     DeferWindowPos(hdwp, g_pChildWnd->hTreeWnd, 0, rt.left, rt.top, g_pChildWnd->nSplitPos-SPLIT_WIDTH/2-rt.left, rt.bottom-rt.top, SWP_NOZORDER|SWP_NOACTIVATE);
  78     DeferWindowPos(hdwp, g_pChildWnd->hListWnd, 0, rt.left+cx  , rt.top, rt.right-cx, rt.bottom-rt.top, SWP_NOZORDER|SWP_NOACTIVATE);
  79     EndDeferWindowPos(hdwp);
  80 }
  81
  82 static void OnPaint(HWND hWnd)
  83 {
  84     PAINTSTRUCT ps;
  85     RECT rt;
  86
  87     GetClientRect(hWnd, &rt);
  88     BeginPaint(hWnd, &ps);
  89     FillRect(ps.hdc, &rt, GetSysColorBrush(COLOR_BTNFACE));
  90     EndPaint(hWnd, &ps);
  91 }
  92
  93 static LPWSTR CombinePaths(LPCWSTR pPaths[], int nPaths) {
  94     int i, len, pos;
  95     LPWSTR combined;
  96     for (i=0, len=0; i<nPaths; i++) {
  97         if (pPaths[i] && *pPaths[i]) {
  98             len += lstrlenW(pPaths[i])+1;
  99         }
 100     }
 101     combined = malloc(len * sizeof(WCHAR));
 102     *combined = '\0';
 103     for (i=0, pos=0; i<nPaths; i++) {
 104         if (pPaths[i] && *pPaths[i]) {
 105             int llen = lstrlenW(pPaths[i]);
 106             if (!*combined)
 107                 lstrcpyW(combined, pPaths[i]);
 108             else {
 109                 combined[pos++] = '\\';
 110                 lstrcpyW(combined+pos, pPaths[i]);
 111             }
 112             pos += llen;
 113         }
 114     }
 115     return combined;
 116 }
 117
 118 static LPWSTR GetPathRoot(HWND hwndTV, HTREEITEM hItem, BOOL bFull) {
 119     LPCWSTR parts[2] = {0,0};
 120     WCHAR text[260];
 121     HKEY hRootKey = NULL;
 122     if (!hItem)
 123         hItem = (HTREEITEM)SendMessageW(hwndTV, TVM_GETNEXTITEM, TVGN_CARET, 0);
 124     free(GetItemPath(hwndTV, hItem, &hRootKey));
 125     if (!bFull && !hRootKey)
 126         return NULL;
 127     if (hRootKey)
 128         parts[1] = GetRootKeyName(hRootKey);
 129     if (bFull) {
 130         DWORD dwSize = ARRAY_SIZE(text);
 131         GetComputerNameW(text, &dwSize);
 132         parts[0] = text;
 133     }
 134     return CombinePaths(parts, 2);
 135 }
 136
 137 LPWSTR GetItemFullPath(HWND hwndTV, HTREEITEM hItem, BOOL bFull) {
 138     LPWSTR parts[2];
 139     LPWSTR ret;
 140     HKEY hRootKey = NULL;
 141
 142     parts[0] = GetPathRoot(hwndTV, hItem, bFull);
 143     parts[1] = GetItemPath(hwndTV, hItem, &hRootKey);
 144     ret = CombinePaths((LPCWSTR *)parts, 2);
 145     free(parts[0]);
 146     free(parts[1]);
 147     return ret;
 148 }
 149
 150 static void OnTreeSelectionChanged(HWND hwndTV, HWND hwndLV, HTREEITEM hItem, BOOL bRefreshLV)
 151 {
 152     if (bRefreshLV) {
 153         LPWSTR keyPath;
 154         HKEY hRootKey = NULL;
 155         HTREEITEM rootitem;
 156
 157         rootitem = (HTREEITEM)SendMessageW(hwndTV, TVM_GETNEXTITEM, TVGN_ROOT, 0);
 158         if (rootitem == hItem)
 159         {
 160             SendMessageW(hwndLV, LVM_DELETEALLITEMS, 0, 0);
 161             UpdateStatusBar();
 162             return;
 163         }
 164
 165         keyPath = GetItemPath(hwndTV, hItem, &hRootKey);
 166         RefreshListView(hwndLV, hRootKey, keyPath, NULL);
 167         free(keyPath);
 168     }
 169     UpdateStatusBar();
 170 }
 171
 172 /*******************************************************************************
 173  * finish_splitbar [internal]
 174  *
 175  * make the splitbar invisible and resize the windows
 176  * (helper for ChildWndProc)
 177  */
 178 static void finish_splitbar(HWND hWnd, int x)
 179 {
 180     RECT rt;
 181
 182     draw_splitbar(hWnd, last_split);
 183     last_split = -1;
 184     GetClientRect(hWnd, &rt);
 185     g_pChildWnd->nSplitPos = x;
 186     ResizeWnd(rt.right, rt.bottom);
 187     ReleaseCapture();
 188 }
 189
 190 /*******************************************************************************
 191  *
 192  *  FUNCTION: _CmdWndProc(HWND, unsigned, WORD, LONG)
 193  *
 194  *  PURPOSE:  Processes WM_COMMAND messages for the main frame window.
 195  *
 196  */
 197
 198 static BOOL _CmdWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 199 {
 200     switch (LOWORD(wParam)) {
 201         /* Parse the menu selections: */
 202     case ID_REGISTRY_EXIT:
 203         DestroyWindow(hWnd);
 204         break;
 205     case ID_VIEW_REFRESH:
 206         WINE_TRACE("Is this ever called or is it just dead code?\n");
 207         /* TODO */
 208         break;
 209     case ID_SWITCH_PANELS:
 210         g_pChildWnd->nFocusPanel = !g_pChildWnd->nFocusPanel;
 211         SetFocus(g_pChildWnd->nFocusPanel? g_pChildWnd->hListWnd: g_pChildWnd->hTreeWnd);
 212         break;
 213     default:
 214         return FALSE;
 215     }
 216     return TRUE;
 217 }
 218
 219 /*******************************************************************************
 220  * get_last_key [internal]
 221  *
 222  * open last key
 223  *
 224  */
 225 static void get_last_key(HWND hwndTV)
 226 {
 227     HKEY hkey;
 228     WCHAR wszVal[KEY_MAX_LEN];
 229     DWORD dwSize = sizeof(wszVal);
 230
 231     if (RegCreateKeyExW(HKEY_CURRENT_USER, wszKeyName, 0, NULL, 0, KEY_READ, NULL, &hkey, NULL) == ERROR_SUCCESS)
 232     {
 233         HTREEITEM selection = NULL;
 234         if (RegQueryValueExW(hkey, wszLastKey, NULL, NULL, (LPBYTE)wszVal, &dwSize) == ERROR_SUCCESS)
 235         {
 236             if (lstrcmpW(wszVal, g_pChildWnd->szPath))
 237                 selection = FindPathInTree(hwndTV, wszVal);
 238         }
 239
 240         if(!selection)
 241         {
 242             selection = (HTREEITEM)SendMessageW(g_pChildWnd->hTreeWnd, TVM_GETNEXTITEM, TVGN_ROOT, 0);
 243             SendMessageW(hwndTV, TVM_EXPAND, TVE_EXPAND, (LPARAM)selection );
 244         }
 245         else
 246             SendMessageW(hwndTV, TVM_SELECTITEM, TVGN_CARET, (LPARAM)selection);
 247
 248         RegCloseKey(hkey);
 249     }
 250 }
 251
 252 /*******************************************************************************
 253  * set_last_key [internal]
 254  *
 255  * save last key
 256  *
 257  */
 258 static void set_last_key(HWND hwndTV)
 259 {
 260     HKEY hkey;
 261
 262     if (RegCreateKeyExW(HKEY_CURRENT_USER, wszKeyName, 0, NULL, 0, KEY_WRITE, NULL, &hkey, NULL) == ERROR_SUCCESS)
 263     {
 264         HTREEITEM selection = (HTREEITEM)SendMessageW(g_pChildWnd->hTreeWnd, TVM_GETNEXTITEM, TVGN_CARET, 0);
 265         HTREEITEM root = (HTREEITEM)SendMessageW(g_pChildWnd->hTreeWnd, TVM_GETNEXTITEM, TVGN_ROOT, 0);
 266         WCHAR *value;
 267
 268         if (selection == root)
 269             value = g_pChildWnd->szPath;
 270         else
 271             value = GetItemFullPath(g_pChildWnd->hTreeWnd, selection, FALSE);
 272         RegSetValueExW(hkey, wszLastKey, 0, REG_SZ, (LPBYTE)value, (lstrlenW(value) + 1) * sizeof(WCHAR));
 273         if (selection != root)
 274             free(value);
 275         RegCloseKey(hkey);
 276     }
 277 }
 278
 279 static int treeview_notify(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 280 {
 281     switch (((NMHDR *)lParam)->code)
 282     {
 283         case NM_SETFOCUS:
 284             g_pChildWnd->nFocusPanel = 0;
 285             break;
 286         case TVN_BEGINLABELEDITW:
 287         {
 288             HKEY hRootKey;
 289             WCHAR *path;
 290
 291             if (!GetWindowLongPtrW(g_pChildWnd->hTreeWnd, GWLP_USERDATA))
 292                 return 1;
 293
 294             path = GetItemPath(g_pChildWnd->hTreeWnd, 0, &hRootKey);
 295             if (!path || !*path)
 296                 return 1;
 297             return 0;
 298         }
 299         case TVN_ENDLABELEDITW:
 300         {
 301             HKEY hRootKey;
 302             NMTVDISPINFOW *dispInfo = (NMTVDISPINFOW *)lParam;
 303             WCHAR *path = GetItemPath(g_pChildWnd->hTreeWnd, 0, &hRootKey);
 304             BOOL res = RenameKey(hWnd, hRootKey, path, dispInfo->item.pszText);
 305
 306             free(path);
 307
 308             if (res)
 309             {
 310                 TVITEMW item;
 311
 312                 item.mask = TVIF_HANDLE | TVIF_TEXT;
 313                 item.hItem = dispInfo->item.hItem;
 314                 item.pszText = dispInfo->item.pszText;
 315                 SendMessageW(g_pChildWnd->hTreeWnd, TVM_SETITEMW, 0, (LPARAM)&item);
 316
 317                 path = GetItemPath(g_pChildWnd->hTreeWnd, 0, &hRootKey);
 318                 update_listview_path(path);
 319                 free(path);
 320
 321                 UpdateStatusBar();
 322             }
 323
 324             SetWindowLongPtrW(g_pChildWnd->hTreeWnd, GWLP_USERDATA, 0);
 325             return res;
 326         }
 327         case TVN_ITEMEXPANDINGW:
 328             return !OnTreeExpanding(g_pChildWnd->hTreeWnd, (NMTREEVIEWW *)lParam);
 329         case TVN_SELCHANGEDW:
 330             OnTreeSelectionChanged(g_pChildWnd->hTreeWnd, g_pChildWnd->hListWnd,
 331                                    ((NMTREEVIEWW *)lParam)->itemNew.hItem, TRUE);
 332             break;
 333     }
 334     return 0;
 335 }
 336
 337 static int listview_notify(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 338 {
 339     switch (((NMHDR *)lParam)->code)
 340     {
 341         case NM_DBLCLK:
 342         {
 343             NMITEMACTIVATE *nmitem = (NMITEMACTIVATE *)lParam;
 344
 345             if (nmitem->iItem != -1)
 346             {
 347                 LVITEMW item;
 348
 349                 item.state = 0;
 350                 item.stateMask = LVIS_FOCUSED | LVIS_SELECTED;
 351                 SendMessageW(g_pChildWnd->hListWnd, LVM_SETITEMSTATE, (UINT)-1, (LPARAM)&item);
 352
 353                 item.state = LVIS_FOCUSED | LVIS_SELECTED;
 354                 item.stateMask = LVIS_FOCUSED | LVIS_SELECTED;
 355                 SendMessageW(g_pChildWnd->hListWnd, LVM_SETITEMSTATE, nmitem->iItem, (LPARAM)&item);
 356
 357                 SendMessageW(hFrameWnd, WM_COMMAND, ID_EDIT_MODIFY, 0);
 358             }
 359             break;
 360         }
 361         case NM_RETURN:
 362         {
 363             int cnt = SendMessageW(g_pChildWnd->hListWnd, LVM_GETNEXTITEM, -1,
 364                                    MAKELPARAM(LVNI_FOCUSED | LVNI_SELECTED, 0));
 365             if (cnt != -1)
 366                 SendMessageW(hFrameWnd, WM_COMMAND, ID_EDIT_MODIFY, 0);
 367             break;
 368         }
 369         case NM_SETFOCUS:
 370             g_pChildWnd->nFocusPanel = 1;
 371             break;
 372         case LVN_BEGINLABELEDITW:
 373             if (!((NMLVDISPINFOW *)lParam)->item.iItem)
 374                 return 1;
 375             return 0;
 376         case LVN_COLUMNCLICK:
 377             if (g_columnToSort == ((NMLISTVIEW *)lParam)->iSubItem)
 378                 g_invertSort = !g_invertSort;
 379             else
 380             {
 381                 g_columnToSort = ((NMLISTVIEW *)lParam)->iSubItem;
 382                 g_invertSort = FALSE;
 383             }
 384
 385             SendMessageW(g_pChildWnd->hListWnd, LVM_SORTITEMS,
 386                         (WPARAM)g_pChildWnd->hListWnd, (LPARAM)CompareFunc);
 387             break;
 388         case LVN_DELETEITEM:
 389         {
 390             NMLISTVIEW *nmlv = (NMLISTVIEW *)lParam;
 391             LINE_INFO *info = (LINE_INFO *)nmlv->lParam;
 392
 393             free(info->name);
 394             free(info->val);
 395             free(info);
 396             break;
 397         }
 398         case LVN_ENDLABELEDITW:
 399         {
 400             NMLVDISPINFOW *dispInfo = (NMLVDISPINFOW *)lParam;
 401             WCHAR *oldName = GetItemText(g_pChildWnd->hListWnd, dispInfo->item.iItem);
 402             LONG ret;
 403
 404             if (!oldName) return -1; /* cannot rename a default value */
 405             ret = RenameValue(g_pChildWnd->hListWnd, g_currentRootKey, g_currentPath,
 406                               oldName, dispInfo->item.pszText);
 407             if (ret)
 408             {
 409                 dispInfo->item.iSubItem = 0;
 410                 SendMessageW(g_pChildWnd->hListWnd, LVM_SETITEMTEXTW,
 411                              dispInfo->item.iItem, (LPARAM)&dispInfo->item);
 412             }
 413
 414             free(oldName);
 415             return 0;
 416         }
 417         case LVN_GETDISPINFOW:
 418             OnGetDispInfo((NMLVDISPINFOW *)lParam);
 419             break;
 420     }
 421     return 0;
 422 }
 423
 424 #define GET_X_LPARAM(lp) ((int)(short)LOWORD(lp))
 425 #define GET_Y_LPARAM(lp) ((int)(short)HIWORD(lp))
 426
 427 /*******************************************************************************
 428  *
 429  *  FUNCTION: ChildWndProc(HWND, unsigned, WORD, LONG)
 430  *
 431  *  PURPOSE:  Processes messages for the child windows.
 432  *
 433  *  WM_COMMAND  - process the application menu
 434  *  WM_PAINT    - Paint the main window
 435  *  WM_DESTROY  - post a quit message and return
 436  *
 437  */
 438 LRESULT CALLBACK ChildWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 439 {
 440     switch (message) {
 441     case WM_CREATE:
 442         g_pChildWnd = malloc(sizeof(ChildWnd));
 443         if (!g_pChildWnd) return 0;
 444         LoadStringW(hInst, IDS_REGISTRY_ROOT_NAME, g_pChildWnd->szPath, MAX_PATH);
 445         g_pChildWnd->nSplitPos = 250;
 446         g_pChildWnd->hWnd = hWnd;
 447         g_pChildWnd->hTreeWnd = CreateTreeView(hWnd, g_pChildWnd->szPath, TREE_WINDOW);
 448         g_pChildWnd->hListWnd = CreateListView(hWnd, LIST_WINDOW/*, g_pChildWnd->szPath*/);
 449         g_pChildWnd->nFocusPanel = 1;
 450         SetFocus(g_pChildWnd->hTreeWnd);
 451         get_last_key(g_pChildWnd->hTreeWnd);
 452         break;
 453     case WM_COMMAND:
 454         if (!_CmdWndProc(hWnd, message, wParam, lParam)) {
 455             goto def;
 456         }
 457         break;
 458     case WM_PAINT:
 459         OnPaint(hWnd);
 460         return 0;
 461     case WM_SETCURSOR:
 462         if (LOWORD(lParam) == HTCLIENT) {
 463             POINT pt;
 464             GetCursorPos(&pt);
 465             ScreenToClient(hWnd, &pt);
 466             if (pt.x>=g_pChildWnd->nSplitPos-SPLIT_WIDTH/2 && pt.x<g_pChildWnd->nSplitPos+SPLIT_WIDTH/2+1) {
 467                 SetCursor(LoadCursorW(0, (LPCWSTR)IDC_SIZEWE));
 468                 return TRUE;
 469             }
 470         }
 471         goto def;
 472     case WM_DESTROY:
 473         set_last_key(g_pChildWnd->hTreeWnd);
 474         free(g_pChildWnd);
 475         g_pChildWnd = NULL;
 476         PostQuitMessage(0);
 477         break;
 478     case WM_LBUTTONDOWN: {
 479             RECT rt;
 480             int x = (short)LOWORD(lParam);
 481             GetClientRect(hWnd, &rt);
 482             if (x>=g_pChildWnd->nSplitPos-SPLIT_WIDTH/2 && x<g_pChildWnd->nSplitPos+SPLIT_WIDTH/2+1) {
 483                 last_split = g_pChildWnd->nSplitPos;
 484                 draw_splitbar(hWnd, last_split);
 485                 SetCapture(hWnd);
 486             }
 487             break;
 488         }
 489
 490     /* WM_RBUTTONDOWN sets the splitbar the same way as WM_LBUTTONUP */
 491     case WM_LBUTTONUP:
 492     case WM_RBUTTONDOWN:
 493         if (GetCapture() == hWnd) {
 494             finish_splitbar(hWnd, LOWORD(lParam));
 495         }
 496         break;
 497
 498     case WM_CAPTURECHANGED:
 499         if (GetCapture()==hWnd && last_split>=0)
 500             draw_splitbar(hWnd, last_split);
 501         break;
 502
 503     case WM_CONTEXTMENU:
 504     {
 505         POINT pt = {GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam)};
 506         short int menu_id = -1;
 507
 508         if ((HWND)wParam == g_pChildWnd->hTreeWnd)
 509         {
 510             TVHITTESTINFO ht;
 511
 512             ht.pt = pt;
 513             ScreenToClient(g_pChildWnd->hTreeWnd, &ht.pt);
 514
 515             if (SendMessageW(g_pChildWnd->hTreeWnd, TVM_HITTEST, 0, (LPARAM)&ht))
 516             {
 517                 HTREEITEM root;
 518
 519                 SendMessageW(g_pChildWnd->hTreeWnd, TVM_SELECTITEM, TVGN_CARET, (LPARAM)ht.hItem);
 520                 root = (HTREEITEM)SendMessageW(g_pChildWnd->hTreeWnd, TVM_GETNEXTITEM, TVGN_ROOT, 0);
 521                 menu_id = (ht.hItem == root) ? PM_COMPUTER : PM_TREEVIEW;
 522             }
 523         }
 524         else
 525         {
 526             int sel = SendMessageW(g_pChildWnd->hListWnd, LVM_GETNEXTITEM, -1,
 527                                    MAKELPARAM(LVNI_SELECTED, 0));
 528             menu_id = (sel == -1) ? PM_NEW_VALUE : PM_MODIFY_VALUE;
 529         }
 530
 531         TrackPopupMenu(GetSubMenu(hPopupMenus, menu_id), TPM_RIGHTBUTTON,
 532                        pt.x, pt.y, 0, hFrameWnd, NULL);
 533         break;
 534     }
 535
 536     case WM_KEYDOWN:
 537         if (wParam == VK_ESCAPE)
 538             if (GetCapture() == hWnd) {
 539                 RECT rt;
 540                 draw_splitbar(hWnd, last_split);
 541                 GetClientRect(hWnd, &rt);
 542                 ResizeWnd(rt.right, rt.bottom);
 543                 last_split = -1;
 544                 ReleaseCapture();
 545                 SetCursor(LoadCursorW(0, (LPCWSTR)IDC_ARROW));
 546             }
 547         break;
 548
 549     case WM_MOUSEMOVE:
 550         if (GetCapture() == hWnd) {
 551             RECT rt;
 552             int x = LOWORD(lParam);
 553             HDC hdc = GetDC(hWnd);
 554             GetClientRect(hWnd, &rt);
 555             rt.left = last_split-SPLIT_WIDTH/2;
 556             rt.right = last_split+SPLIT_WIDTH/2+1;
 557             InvertRect(hdc, &rt);
 558             last_split = x;
 559             rt.left = x-SPLIT_WIDTH/2;
 560             rt.right = x+SPLIT_WIDTH/2+1;
 561             InvertRect(hdc, &rt);
 562             ReleaseDC(hWnd, hdc);
 563         }
 564         break;
 565
 566     case WM_SETFOCUS:
 567         if (g_pChildWnd != NULL) {
 568             SetFocus(g_pChildWnd->nFocusPanel? g_pChildWnd->hListWnd: g_pChildWnd->hTreeWnd);
 569         }
 570         break;
 571
 572     case WM_TIMER:
 573         break;
 574
 575     case WM_NOTIFY:
 576         if (wParam == TREE_WINDOW && g_pChildWnd)
 577             return treeview_notify(hWnd, message, wParam, lParam);
 578         else if (wParam == LIST_WINDOW && g_pChildWnd)
 579             return listview_notify(hWnd, message, wParam, lParam);
 580         break;
 581
 582     case WM_SIZE:
 583         if (wParam != SIZE_MINIMIZED && g_pChildWnd != NULL) {
 584             ResizeWnd(LOWORD(lParam), HIWORD(lParam));
 585         }
 586         /* fall through */
 587 default: def:
 588         return DefWindowProcW(hWnd, message, wParam, lParam);
 589     }
 590     return 0;
 591 }