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 #include <stdio.h>
  25
  26 #include "main.h"
  27 #include "regproc.h"
  28
  29 #include "wine/debug.h"
  30 #include "wine/unicode.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(regedit);
  33
  34 ChildWnd* g_pChildWnd;
  35 static int last_split;
  36
  37 static const WCHAR wszLastKey[] = {'L','a','s','t','K','e','y',0};
  38 static const WCHAR wszKeyName[] = {'S','o','f','t','w','a','r','e','\\',
  39                                    'M','i','c','r','o','s','o','f','t','\\',
  40                                    'W','i','n','d','o','w','s','\\',
  41                                    'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
  42                                    'A','p','p','l','e','t','s','\\','R','e','g','e','d','i','t',0};
  43
  44 /*******************************************************************************
  45  * Local module support methods
  46  */
  47
  48 static LPCWSTR GetRootKeyName(HKEY hRootKey)
  49 {
  50     if(hRootKey == HKEY_CLASSES_ROOT)
  51         return reg_class_namesW[INDEX_HKEY_CLASSES_ROOT];
  52     if(hRootKey == HKEY_CURRENT_USER)
  53         return reg_class_namesW[INDEX_HKEY_CURRENT_USER];
  54     if(hRootKey == HKEY_LOCAL_MACHINE)
  55         return reg_class_namesW[INDEX_HKEY_LOCAL_MACHINE];
  56     if(hRootKey == HKEY_USERS)
  57         return reg_class_namesW[INDEX_HKEY_USERS];
  58     if(hRootKey == HKEY_CURRENT_CONFIG)
  59         return reg_class_namesW[INDEX_HKEY_CURRENT_CONFIG];
  60     if(hRootKey == HKEY_DYN_DATA)
  61         return reg_class_namesW[INDEX_HKEY_DYN_DATA];
  62     else
  63     {
  64         static const WCHAR unknown_key[] = {'U','N','K','N','O','W','N',' ','H','K','E','Y',',',' ',
  65                                             'P','L','E','A','S','E',' ','R','E','P','O','R','T',0};
  66         return unknown_key;
  67     }
  68 }
  69
  70 static void draw_splitbar(HWND hWnd, int x)
  71 {
  72     RECT rt;
  73     HDC hdc = GetDC(hWnd);
  74
  75     GetClientRect(hWnd, &rt);
  76     rt.left = x - SPLIT_WIDTH/2;
  77     rt.right = x + SPLIT_WIDTH/2+1;
  78     InvertRect(hdc, &rt);
  79     ReleaseDC(hWnd, hdc);
  80 }
  81
  82 static void ResizeWnd(int cx, int cy)
  83 {
  84     HDWP hdwp = BeginDeferWindowPos(2);
  85     RECT rt = {0, 0, cx, cy};
  86
  87     cx = g_pChildWnd->nSplitPos + SPLIT_WIDTH/2;
  88     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);
  89     DeferWindowPos(hdwp, g_pChildWnd->hListWnd, 0, rt.left+cx  , rt.top, rt.right-cx, rt.bottom-rt.top, SWP_NOZORDER|SWP_NOACTIVATE);
  90     EndDeferWindowPos(hdwp);
  91 }
  92
  93 static void OnPaint(HWND hWnd)
  94 {
  95     PAINTSTRUCT ps;
  96     RECT rt;
  97
  98     GetClientRect(hWnd, &rt);
  99     BeginPaint(hWnd, &ps);
 100     FillRect(ps.hdc, &rt, GetSysColorBrush(COLOR_BTNFACE));
 101     EndPaint(hWnd, &ps);
 102 }
 103
 104 static LPWSTR CombinePaths(LPCWSTR pPaths[], int nPaths) {
 105     int i, len, pos;
 106     LPWSTR combined;
 107     for (i=0, len=0; i<nPaths; i++) {
 108         if (pPaths[i] && *pPaths[i]) {
 109             len += lstrlenW(pPaths[i])+1;
 110         }
 111     }
 112     combined = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 113     *combined = '\0';
 114     for (i=0, pos=0; i<nPaths; i++) {
 115         if (pPaths[i] && *pPaths[i]) {
 116             int llen = lstrlenW(pPaths[i]);
 117             if (!*combined)
 118                 lstrcpyW(combined, pPaths[i]);
 119             else {
 120                 combined[pos++] = '\\';
 121                 lstrcpyW(combined+pos, pPaths[i]);
 122             }
 123             pos += llen;
 124         }
 125     }
 126     return combined;
 127 }
 128
 129 static LPWSTR GetPathRoot(HWND hwndTV, HTREEITEM hItem, BOOL bFull) {
 130     LPCWSTR parts[2] = {0,0};
 131     WCHAR text[260];
 132     HKEY hRootKey = NULL;
 133     if (!hItem)
 134         hItem = (HTREEITEM)SendMessageW(hwndTV, TVM_GETNEXTITEM, TVGN_CARET, 0);
 135     HeapFree(GetProcessHeap(), 0, GetItemPath(hwndTV, hItem, &hRootKey));
 136     if (!bFull && !hRootKey)
 137         return NULL;
 138     if (hRootKey)
 139         parts[1] = GetRootKeyName(hRootKey);
 140     if (bFull) {
 141         DWORD dwSize = sizeof(text)/sizeof(WCHAR);
 142         GetComputerNameW(text, &dwSize);
 143         parts[0] = text;
 144     }
 145     return CombinePaths(parts, 2);
 146 }
 147
 148 LPWSTR GetItemFullPath(HWND hwndTV, HTREEITEM hItem, BOOL bFull) {
 149     LPWSTR parts[2];
 150     LPWSTR ret;
 151     HKEY hRootKey = NULL;
 152
 153     parts[0] = GetPathRoot(hwndTV, hItem, bFull);
 154     parts[1] = GetItemPath(hwndTV, hItem, &hRootKey);
 155     ret = CombinePaths((LPCWSTR *)parts, 2);
 156     HeapFree(GetProcessHeap(), 0, parts[0]);
 157     HeapFree(GetProcessHeap(), 0, parts[1]);
 158     return ret;
 159 }
 160
 161 static void OnTreeSelectionChanged(HWND hwndTV, HWND hwndLV, HTREEITEM hItem, BOOL bRefreshLV)
 162 {
 163     if (bRefreshLV) {
 164         LPWSTR keyPath;
 165         HKEY hRootKey = NULL;
 166         HTREEITEM rootitem;
 167
 168         rootitem = (HTREEITEM)SendMessageW(hwndTV, TVM_GETNEXTITEM, TVGN_ROOT, 0);
 169         if (rootitem == hItem)
 170         {
 171             SendMessageW(hwndLV, LVM_DELETEALLITEMS, 0, 0);
 172             UpdateStatusBar();
 173             return;
 174         }
 175
 176         keyPath = GetItemPath(hwndTV, hItem, &hRootKey);
 177         RefreshListView(hwndLV, hRootKey, keyPath, NULL);
 178         HeapFree(GetProcessHeap(), 0, keyPath);
 179     }
 180     UpdateStatusBar();
 181 }
 182
 183 /*******************************************************************************
 184  * finish_splitbar [internal]
 185  *
 186  * make the splitbar invisible and resize the windows
 187  * (helper for ChildWndProc)
 188  */
 189 static void finish_splitbar(HWND hWnd, int x)
 190 {
 191     RECT rt;
 192
 193     draw_splitbar(hWnd, last_split);
 194     last_split = -1;
 195     GetClientRect(hWnd, &rt);
 196     g_pChildWnd->nSplitPos = x;
 197     ResizeWnd(rt.right, rt.bottom);
 198     ReleaseCapture();
 199 }
 200
 201 /*******************************************************************************
 202  *
 203  *  FUNCTION: _CmdWndProc(HWND, unsigned, WORD, LONG)
 204  *
 205  *  PURPOSE:  Processes WM_COMMAND messages for the main frame window.
 206  *
 207  */
 208
 209 static BOOL _CmdWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 210 {
 211     switch (LOWORD(wParam)) {
 212         /* Parse the menu selections: */
 213     case ID_REGISTRY_EXIT:
 214         DestroyWindow(hWnd);
 215         break;
 216     case ID_VIEW_REFRESH:
 217         WINE_TRACE("Is this ever called or is it just dead code?\n");
 218         /* TODO */
 219         break;
 220     case ID_SWITCH_PANELS:
 221         g_pChildWnd->nFocusPanel = !g_pChildWnd->nFocusPanel;
 222         SetFocus(g_pChildWnd->nFocusPanel? g_pChildWnd->hListWnd: g_pChildWnd->hTreeWnd);
 223         break;
 224     default:
 225         return FALSE;
 226     }
 227     return TRUE;
 228 }
 229
 230 /*******************************************************************************
 231  * get_last_key [internal]
 232  *
 233  * open last key
 234  *
 235  */
 236 static void get_last_key(HWND hwndTV)
 237 {
 238     HKEY hkey;
 239     WCHAR wszVal[KEY_MAX_LEN];
 240     DWORD dwSize = sizeof(wszVal);
 241
 242     if (RegCreateKeyExW(HKEY_CURRENT_USER, wszKeyName, 0, NULL, 0, KEY_READ, NULL, &hkey, NULL) == ERROR_SUCCESS)
 243     {
 244         if (RegQueryValueExW(hkey, wszLastKey, NULL, NULL, (LPBYTE)wszVal, &dwSize) == ERROR_SUCCESS)
 245         {
 246             HTREEITEM selection;
 247             if (!strcmpW(wszVal, g_pChildWnd->szPath))
 248                 selection = (HTREEITEM)SendMessageW(g_pChildWnd->hTreeWnd, TVM_GETNEXTITEM, TVGN_ROOT, 0);
 249             else
 250                 selection = FindPathInTree(hwndTV, wszVal);
 251             SendMessageW(hwndTV, TVM_SELECTITEM, TVGN_CARET, (LPARAM)selection);
 252         }
 253
 254         RegCloseKey(hkey);
 255     }
 256 }
 257
 258 /*******************************************************************************
 259  * set_last_key [internal]
 260  *
 261  * save last key
 262  *
 263  */
 264 static void set_last_key(HWND hwndTV)
 265 {
 266     HKEY hkey;
 267
 268     if (RegCreateKeyExW(HKEY_CURRENT_USER, wszKeyName, 0, NULL, 0, KEY_WRITE, NULL, &hkey, NULL) == ERROR_SUCCESS)
 269     {
 270         HTREEITEM selection = (HTREEITEM)SendMessageW(g_pChildWnd->hTreeWnd, TVM_GETNEXTITEM, TVGN_CARET, 0);
 271         HTREEITEM root = (HTREEITEM)SendMessageW(g_pChildWnd->hTreeWnd, TVM_GETNEXTITEM, TVGN_ROOT, 0);
 272         WCHAR *value;
 273
 274         if (selection == root)
 275             value = g_pChildWnd->szPath;
 276         else
 277             value = GetItemFullPath(g_pChildWnd->hTreeWnd, selection, FALSE);
 278         RegSetValueExW(hkey, wszLastKey, 0, REG_SZ, (LPBYTE)value, (lstrlenW(value) + 1) * sizeof(WCHAR));
 279         if (selection != root)
 280             HeapFree(GetProcessHeap(), 0, value);
 281         RegCloseKey(hkey);
 282     }
 283 }
 284
 285 static int treeview_notify(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 286 {
 287     switch (((NMHDR *)lParam)->code)
 288     {
 289         case NM_SETFOCUS:
 290             g_pChildWnd->nFocusPanel = 0;
 291             break;
 292         case TVN_BEGINLABELEDITW:
 293         {
 294             HKEY hRootKey;
 295             WCHAR *path;
 296
 297             if (!GetWindowLongPtrW(g_pChildWnd->hTreeWnd, GWLP_USERDATA))
 298                 return 1;
 299
 300             path = GetItemPath(g_pChildWnd->hTreeWnd, 0, &hRootKey);
 301             if (!path || !*path)
 302                 return 1;
 303             return 0;
 304         }
 305         case TVN_ENDLABELEDITW:
 306         {
 307             HKEY hRootKey;
 308             NMTVDISPINFOW *dispInfo = (NMTVDISPINFOW *)lParam;
 309             WCHAR *path = GetItemPath(g_pChildWnd->hTreeWnd, 0, &hRootKey);
 310             BOOL res = RenameKey(hWnd, hRootKey, path, dispInfo->item.pszText);
 311
 312             HeapFree(GetProcessHeap(), 0, path);
 313
 314             if (res)
 315             {
 316                 TVITEMW item;
 317
 318                 item.mask = TVIF_HANDLE | TVIF_TEXT;
 319                 item.hItem = dispInfo->item.hItem;
 320                 item.pszText = dispInfo->item.pszText;
 321                 SendMessageW(g_pChildWnd->hTreeWnd, TVM_SETITEMW, 0, (LPARAM)&item);
 322
 323                 path = GetItemPath(g_pChildWnd->hTreeWnd, 0, &hRootKey);
 324                 update_listview_path(path);
 325                 HeapFree(GetProcessHeap(), 0, path);
 326
 327                 UpdateStatusBar();
 328             }
 329
 330             SetWindowLongPtrW(g_pChildWnd->hTreeWnd, GWLP_USERDATA, 0);
 331             return res;
 332         }
 333         case TVN_ITEMEXPANDINGW:
 334             return !OnTreeExpanding(g_pChildWnd->hTreeWnd, (NMTREEVIEWW *)lParam);
 335         case TVN_SELCHANGEDW:
 336             OnTreeSelectionChanged(g_pChildWnd->hTreeWnd, g_pChildWnd->hListWnd,
 337                                    ((NMTREEVIEWW *)lParam)->itemNew.hItem, TRUE);
 338             break;
 339     }
 340     return 0;
 341 }
 342
 343 static int listview_notify(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 344 {
 345     switch (((NMHDR *)lParam)->code)
 346     {
 347         case NM_DBLCLK:
 348         {
 349             NMITEMACTIVATE *nmitem = (NMITEMACTIVATE *)lParam;
 350
 351             if (nmitem->iItem != -1)
 352             {
 353                 LVITEMW item;
 354
 355                 item.state = 0;
 356                 item.stateMask = LVIS_FOCUSED | LVIS_SELECTED;
 357                 SendMessageW(g_pChildWnd->hListWnd, LVM_SETITEMSTATE, (UINT)-1, (LPARAM)&item);
 358
 359                 item.state = LVIS_FOCUSED | LVIS_SELECTED;
 360                 item.stateMask = LVIS_FOCUSED | LVIS_SELECTED;
 361                 SendMessageW(g_pChildWnd->hListWnd, LVM_SETITEMSTATE, nmitem->iItem, (LPARAM)&item);
 362
 363                 SendMessageW(hFrameWnd, WM_COMMAND, ID_EDIT_MODIFY, 0);
 364             }
 365             break;
 366         }
 367         case NM_RETURN:
 368         {
 369             int cnt = SendMessageW(g_pChildWnd->hListWnd, LVM_GETNEXTITEM, -1,
 370                                    MAKELPARAM(LVNI_FOCUSED | LVNI_SELECTED, 0));
 371             if (cnt != -1)
 372                 SendMessageW(hFrameWnd, WM_COMMAND, ID_EDIT_MODIFY, 0);
 373             break;
 374         }
 375         case NM_SETFOCUS:
 376             g_pChildWnd->nFocusPanel = 1;
 377             break;
 378         case LVN_BEGINLABELEDITW:
 379             if (!((NMLVDISPINFOW *)lParam)->item.iItem)
 380                 return 1;
 381             return 0;
 382         case LVN_COLUMNCLICK:
 383             if (g_columnToSort == ((NMLISTVIEW *)lParam)->iSubItem)
 384                 g_invertSort = !g_invertSort;
 385             else
 386             {
 387                 g_columnToSort = ((NMLISTVIEW *)lParam)->iSubItem;
 388                 g_invertSort = FALSE;
 389             }
 390
 391             SendMessageW(g_pChildWnd->hListWnd, LVM_SORTITEMS,
 392                         (WPARAM)g_pChildWnd->hListWnd, (LPARAM)CompareFunc);
 393             break;
 394         case LVN_DELETEITEM:
 395         {
 396             NMLISTVIEW *nmlv = (NMLISTVIEW *)lParam;
 397             LINE_INFO *info = (LINE_INFO *)nmlv->lParam;
 398
 399             HeapFree(GetProcessHeap(), 0, info->name);
 400             HeapFree(GetProcessHeap(), 0, info);
 401             break;
 402         }
 403         case LVN_ENDLABELEDITW:
 404         {
 405             NMLVDISPINFOW *dispInfo = (NMLVDISPINFOW *)lParam;
 406             WCHAR *oldName = GetItemText(g_pChildWnd->hListWnd, dispInfo->item.iItem);
 407             LONG ret;
 408
 409             if (!oldName) return -1; /* cannot rename a default value */
 410             ret = RenameValue(g_pChildWnd->hListWnd, g_currentRootKey, g_currentPath,
 411                               oldName, dispInfo->item.pszText);
 412             if (ret)
 413             {
 414                 dispInfo->item.iSubItem = 0;
 415                 SendMessageW(g_pChildWnd->hListWnd, LVM_SETITEMTEXTW,
 416                              dispInfo->item.iItem, (LPARAM)&dispInfo->item);
 417             }
 418
 419             HeapFree(GetProcessHeap(), 0, oldName);
 420             return 0;
 421         }
 422         case LVN_GETDISPINFOW:
 423             OnGetDispInfo((NMLVDISPINFOW *)lParam);
 424             break;
 425     }
 426     return 0;
 427 }
 428
 429 #define GET_X_LPARAM(lp) ((int)(short)LOWORD(lp))
 430 #define GET_Y_LPARAM(lp) ((int)(short)HIWORD(lp))
 431
 432 /*******************************************************************************
 433  *
 434  *  FUNCTION: ChildWndProc(HWND, unsigned, WORD, LONG)
 435  *
 436  *  PURPOSE:  Processes messages for the child windows.
 437  *
 438  *  WM_COMMAND  - process the application menu
 439  *  WM_PAINT    - Paint the main window
 440  *  WM_DESTROY  - post a quit message and return
 441  *
 442  */
 443 LRESULT CALLBACK ChildWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 444 {
 445     switch (message) {
 446     case WM_CREATE:
 447         g_pChildWnd = HeapAlloc(GetProcessHeap(), 0, sizeof(ChildWnd));
 448         if (!g_pChildWnd) return 0;
 449         LoadStringW(hInst, IDS_REGISTRY_ROOT_NAME, g_pChildWnd->szPath, MAX_PATH);
 450         g_pChildWnd->nSplitPos = 250;
 451         g_pChildWnd->hWnd = hWnd;
 452         g_pChildWnd->hTreeWnd = CreateTreeView(hWnd, g_pChildWnd->szPath, TREE_WINDOW);
 453         g_pChildWnd->hListWnd = CreateListView(hWnd, LIST_WINDOW/*, g_pChildWnd->szPath*/);
 454         g_pChildWnd->nFocusPanel = 1;
 455         SetFocus(g_pChildWnd->hTreeWnd);
 456         get_last_key(g_pChildWnd->hTreeWnd);
 457         break;
 458     case WM_COMMAND:
 459         if (!_CmdWndProc(hWnd, message, wParam, lParam)) {
 460             goto def;
 461         }
 462         break;
 463     case WM_PAINT:
 464         OnPaint(hWnd);
 465         return 0;
 466     case WM_SETCURSOR:
 467         if (LOWORD(lParam) == HTCLIENT) {
 468             POINT pt;
 469             GetCursorPos(&pt);
 470             ScreenToClient(hWnd, &pt);
 471             if (pt.x>=g_pChildWnd->nSplitPos-SPLIT_WIDTH/2 && pt.x<g_pChildWnd->nSplitPos+SPLIT_WIDTH/2+1) {
 472                 SetCursor(LoadCursorW(0, (LPCWSTR)IDC_SIZEWE));
 473                 return TRUE;
 474             }
 475         }
 476         goto def;
 477     case WM_DESTROY:
 478         set_last_key(g_pChildWnd->hTreeWnd);
 479         HeapFree(GetProcessHeap(), 0, g_pChildWnd);
 480         g_pChildWnd = NULL;
 481         PostQuitMessage(0);
 482         break;
 483     case WM_LBUTTONDOWN: {
 484             RECT rt;
 485             int x = (short)LOWORD(lParam);
 486             GetClientRect(hWnd, &rt);
 487             if (x>=g_pChildWnd->nSplitPos-SPLIT_WIDTH/2 && x<g_pChildWnd->nSplitPos+SPLIT_WIDTH/2+1) {
 488                 last_split = g_pChildWnd->nSplitPos;
 489                 draw_splitbar(hWnd, last_split);
 490                 SetCapture(hWnd);
 491             }
 492             break;
 493         }
 494
 495     /* WM_RBUTTONDOWN sets the splitbar the same way as WM_LBUTTONUP */
 496     case WM_LBUTTONUP:
 497     case WM_RBUTTONDOWN:
 498         if (GetCapture() == hWnd) {
 499             finish_splitbar(hWnd, LOWORD(lParam));
 500         }
 501         break;
 502
 503     case WM_CAPTURECHANGED:
 504         if (GetCapture()==hWnd && last_split>=0)
 505             draw_splitbar(hWnd, last_split);
 506         break;
 507
 508     case WM_CONTEXTMENU:
 509     {
 510         POINT pt = {GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam)};
 511         short int menu_id = -1;
 512
 513         if ((HWND)wParam == g_pChildWnd->hTreeWnd)
 514         {
 515             TVHITTESTINFO ht;
 516
 517             ht.pt = pt;
 518             ScreenToClient(g_pChildWnd->hTreeWnd, &ht.pt);
 519
 520             if (SendMessageW(g_pChildWnd->hTreeWnd, TVM_HITTEST, 0, (LPARAM)&ht))
 521             {
 522                 HTREEITEM root;
 523
 524                 SendMessageW(g_pChildWnd->hTreeWnd, TVM_SELECTITEM, TVGN_CARET, (LPARAM)ht.hItem);
 525                 root = (HTREEITEM)SendMessageW(g_pChildWnd->hTreeWnd, TVM_GETNEXTITEM, TVGN_ROOT, 0);
 526                 menu_id = (ht.hItem == root) ? PM_COMPUTER : PM_TREEVIEW;
 527             }
 528         }
 529         else
 530         {
 531             int sel = SendMessageW(g_pChildWnd->hListWnd, LVM_GETNEXTITEM, -1,
 532                                    MAKELPARAM(LVNI_SELECTED, 0));
 533             menu_id = (sel == -1) ? PM_NEW_VALUE : PM_MODIFY_VALUE;
 534         }
 535
 536         TrackPopupMenu(GetSubMenu(hPopupMenus, menu_id), TPM_RIGHTBUTTON,
 537                        pt.x, pt.y, 0, hFrameWnd, NULL);
 538         break;
 539     }
 540
 541     case WM_KEYDOWN:
 542         if (wParam == VK_ESCAPE)
 543             if (GetCapture() == hWnd) {
 544                 RECT rt;
 545                 draw_splitbar(hWnd, last_split);
 546                 GetClientRect(hWnd, &rt);
 547                 ResizeWnd(rt.right, rt.bottom);
 548                 last_split = -1;
 549                 ReleaseCapture();
 550                 SetCursor(LoadCursorW(0, (LPCWSTR)IDC_ARROW));
 551             }
 552         break;
 553
 554     case WM_MOUSEMOVE:
 555         if (GetCapture() == hWnd) {
 556             RECT rt;
 557             int x = LOWORD(lParam);
 558             HDC hdc = GetDC(hWnd);
 559             GetClientRect(hWnd, &rt);
 560             rt.left = last_split-SPLIT_WIDTH/2;
 561             rt.right = last_split+SPLIT_WIDTH/2+1;
 562             InvertRect(hdc, &rt);
 563             last_split = x;
 564             rt.left = x-SPLIT_WIDTH/2;
 565             rt.right = x+SPLIT_WIDTH/2+1;
 566             InvertRect(hdc, &rt);
 567             ReleaseDC(hWnd, hdc);
 568         }
 569         break;
 570
 571     case WM_SETFOCUS:
 572         if (g_pChildWnd != NULL) {
 573             SetFocus(g_pChildWnd->nFocusPanel? g_pChildWnd->hListWnd: g_pChildWnd->hTreeWnd);
 574         }
 575         break;
 576
 577     case WM_TIMER:
 578         break;
 579
 580     case WM_NOTIFY:
 581         if (wParam == TREE_WINDOW && g_pChildWnd)
 582             return treeview_notify(hWnd, message, wParam, lParam);
 583         else if (wParam == LIST_WINDOW && g_pChildWnd)
 584             return listview_notify(hWnd, message, wParam, lParam);
 585         break;
 586
 587     case WM_SIZE:
 588         if (wParam != SIZE_MINIMIZED && g_pChildWnd != NULL) {
 589             ResizeWnd(LOWORD(lParam), HIWORD(lParam));
 590         }
 591         /* fall through */
 592 default: def:
 593         return DefWindowProcW(hWnd, message, wParam, lParam);
 594     }
 595     return 0;
 596 }