programs/regedit/listview.c

   1 /*
   2  * Regedit listviews
   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 #include <windows.h>
  22 #include <commctrl.h>
  23 #include <stdlib.h>
  24 #include <tchar.h>
  25 #include <stdio.h>
  26
  27 #include "main.h"
  28 #include "regproc.h"
  29
  30 #include "wine/unicode.h"
  31 static INT Image_String;
  32 static INT Image_Binary;
  33
  34 typedef struct tagLINE_INFO
  35 {
  36     DWORD dwValType;
  37     LPWSTR name;
  38     void* val;
  39     size_t val_len;
  40 } LINE_INFO;
  41
  42 /*******************************************************************************
  43  * Global and Local Variables:
  44  */
  45
  46 static WNDPROC g_orgListWndProc;
  47 static DWORD g_columnToSort = ~0U;
  48 static BOOL  g_invertSort = FALSE;
  49 static LPWSTR g_valueName;
  50 static LPWSTR g_currentPath;
  51 static HKEY g_currentRootKey;
  52 static WCHAR g_szValueNotSetW[64];
  53 static TCHAR g_szValueNotSet[64];
  54
  55 #define MAX_LIST_COLUMNS (IDS_LIST_COLUMN_LAST - IDS_LIST_COLUMN_FIRST + 1)
  56 static int default_column_widths[MAX_LIST_COLUMNS] = { 200, 175, 400 };
  57 static int column_alignment[MAX_LIST_COLUMNS] = { LVCFMT_LEFT, LVCFMT_LEFT, LVCFMT_LEFT };
  58
  59 LPTSTR GetItemText(HWND hwndLV, UINT item)
  60 {
  61     LPTSTR newStr, curStr;
  62     unsigned int maxLen = 128;
  63
  64     curStr = HeapAlloc(GetProcessHeap(), 0, maxLen);
  65     if (!curStr) return NULL;
  66     if (item == 0) { /* first item is ALWAYS a default */
  67         HeapFree(GetProcessHeap(), 0, curStr);
  68         return NULL;
  69     }
  70     do {
  71         ListView_GetItemText(hwndLV, item, 0, curStr, maxLen);
  72         if (_tcslen(curStr) < maxLen - 1) return curStr;
  73         newStr = HeapReAlloc(GetProcessHeap(), 0, curStr, maxLen * 2);
  74         if (!newStr) break;
  75         curStr = newStr;
  76         maxLen *= 2;
  77     } while (TRUE);
  78     HeapFree(GetProcessHeap(), 0, curStr);
  79     return NULL;
  80 }
  81
  82 LPWSTR GetItemTextW(HWND hwndLV, UINT item)
  83 {
  84     LPWSTR newStr, curStr;
  85     unsigned int maxLen = 128;
  86
  87     curStr = HeapAlloc(GetProcessHeap(), 0, maxLen * sizeof(WCHAR));
  88     if (!curStr) return NULL;
  89     if (item == 0) { /* first item is ALWAYS a default */
  90         HeapFree(GetProcessHeap(), 0, curStr);
  91         return NULL;
  92     }
  93     do {
  94         ListView_GetItemTextW(hwndLV, item, 0, curStr, maxLen * sizeof(WCHAR));
  95         if (lstrlenW(curStr) < maxLen - 1) return curStr;
  96         newStr = HeapReAlloc(GetProcessHeap(), 0, curStr, maxLen * 2 * sizeof(WCHAR));
  97         if (!newStr) break;
  98         curStr = newStr;
  99         maxLen *= 2;
 100     } while (TRUE);
 101     HeapFree(GetProcessHeap(), 0, curStr);
 102     return NULL;
 103 }
 104
 105 LPCWSTR GetValueName(HWND hwndLV)
 106 {
 107     INT item;
 108
 109     if (g_valueName != LPSTR_TEXTCALLBACKW)
 110         HeapFree(GetProcessHeap(), 0,  g_valueName);
 111     g_valueName = NULL;
 112
 113     item = ListView_GetNextItem(hwndLV, -1, LVNI_FOCUSED);
 114     if (item == -1) return NULL;
 115
 116     g_valueName = GetItemTextW(hwndLV, item);
 117
 118     return g_valueName;
 119 }
 120
 121 /* convert '\0' separated string list into ',' separated string list */
 122 static void MakeMULTISZDisplayable(LPWSTR multi)
 123 {
 124     do
 125     {
 126         for (; *multi; multi++)
 127             ;
 128         if (*(multi+1))
 129         {
 130             *multi = ',';
 131             multi++;
 132         }
 133     } while (*multi);
 134 }
 135
 136 /*******************************************************************************
 137  * Local module support methods
 138  */
 139 static void AddEntryToList(HWND hwndLV, LPWSTR Name, DWORD dwValType,
 140     void* ValBuf, DWORD dwCount, BOOL bHighlight)
 141 {
 142     LINE_INFO* linfo;
 143     LVITEMW item;
 144     int index;
 145
 146     linfo = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(LINE_INFO) + dwCount);
 147     linfo->dwValType = dwValType;
 148     linfo->val_len = dwCount;
 149     CopyMemory(&linfo[1], ValBuf, dwCount);
 150
 151     if (Name)
 152     {
 153         linfo->name = HeapAlloc(GetProcessHeap(), 0, (lstrlenW(Name) + 1) * sizeof(WCHAR));
 154         lstrcpyW(linfo->name, Name);
 155     } else
 156     {
 157         linfo->name = NULL;
 158     }
 159
 160     item.mask = LVIF_TEXT | LVIF_PARAM | LVIF_STATE | LVIF_IMAGE;
 161     item.iItem = ListView_GetItemCount(hwndLV);/*idx;  */
 162     item.iSubItem = 0;
 163     item.state = 0;
 164     item.stateMask = LVIS_FOCUSED | LVIS_SELECTED;
 165     item.pszText = Name ? Name : LPSTR_TEXTCALLBACKW;
 166     item.cchTextMax = Name ? lstrlenW(item.pszText) : 0;
 167     if (bHighlight) {
 168         item.stateMask = item.state = LVIS_FOCUSED | LVIS_SELECTED;
 169     }
 170     switch (dwValType)
 171     {
 172     case REG_SZ:
 173     case REG_EXPAND_SZ:
 174     case REG_MULTI_SZ:
 175         item.iImage = Image_String;
 176         break;
 177     default:
 178         item.iImage = Image_Binary;
 179         break;
 180     }
 181     item.lParam = (LPARAM)linfo;
 182
 183 #if (_WIN32_IE >= 0x0300)
 184     item.iIndent = 0;
 185 #endif
 186
 187     index = ListView_InsertItemW(hwndLV, &item);
 188     if (index != -1) {
 189         switch (dwValType) {
 190         case REG_SZ:
 191         case REG_EXPAND_SZ:
 192             if (ValBuf) {
 193                 ListView_SetItemTextW(hwndLV, index, 2, ValBuf);
 194             } else {
 195                 ListView_SetItemTextW(hwndLV, index, 2, g_szValueNotSetW);
 196             }
 197             break;
 198         case REG_DWORD: {
 199                 WCHAR buf[64];
 200                 WCHAR format[] = {'0','x','%','0','8','x',' ','(','%','u',')',0};
 201                 wsprintfW(buf, format, *(DWORD*)ValBuf, *(DWORD*)ValBuf);
 202                 ListView_SetItemTextW(hwndLV, index, 2, buf);
 203             }
 204             break;
 205         case REG_BINARY: {
 206                 unsigned int i;
 207                 LPBYTE pData = (LPBYTE)ValBuf;
 208                 LPWSTR strBinary = HeapAlloc(GetProcessHeap(), 0, dwCount * sizeof(WCHAR) * 3 + sizeof(WCHAR));
 209                 WCHAR format[] = {'%','0','2','X',' ',0};
 210                 for (i = 0; i < dwCount; i++)
 211                     wsprintfW( strBinary + i*3, format, pData[i] );
 212                 strBinary[dwCount * 3] = 0;
 213                 ListView_SetItemTextW(hwndLV, index, 2, strBinary);
 214                 HeapFree(GetProcessHeap(), 0, strBinary);
 215             }
 216             break;
 217         case REG_MULTI_SZ:
 218             MakeMULTISZDisplayable(ValBuf);
 219             ListView_SetItemTextW(hwndLV, index, 2, ValBuf);
 220             break;
 221         default:
 222           {
 223             WCHAR szText[128];
 224             LoadStringW(hInst, IDS_REGISTRY_VALUE_CANT_DISPLAY, szText, COUNT_OF(szText));
 225             ListView_SetItemTextW(hwndLV, index, 2, szText);
 226             break;
 227           }
 228         }
 229     }
 230 }
 231
 232 static BOOL InitListViewImageList(HWND hWndListView)
 233 {
 234     HIMAGELIST himl;
 235     HICON hicon;
 236     INT cx = GetSystemMetrics(SM_CXSMICON);
 237     INT cy = GetSystemMetrics(SM_CYSMICON);
 238
 239     himl = ImageList_Create(cx, cy, ILC_MASK, 0, 2);
 240     if (!himl)
 241         return FALSE;
 242
 243     hicon = LoadImage(hInst, MAKEINTRESOURCE(IDI_STRING),
 244         IMAGE_ICON, cx, cy, LR_DEFAULTCOLOR);
 245     Image_String = ImageList_AddIcon(himl, hicon);
 246
 247     hicon = LoadImage(hInst, MAKEINTRESOURCE(IDI_BIN),
 248         IMAGE_ICON, cx, cy, LR_DEFAULTCOLOR);
 249     Image_Binary = ImageList_AddIcon(himl, hicon);
 250
 251     SendMessage( hWndListView, LVM_SETIMAGELIST, LVSIL_SMALL, (LPARAM) himl );
 252
 253     /* fail if some of the icons failed to load */
 254     if (ImageList_GetImageCount(himl) < 2)
 255         return FALSE;
 256
 257     return TRUE;
 258 }
 259
 260 static BOOL CreateListColumns(HWND hWndListView)
 261 {
 262     TCHAR szText[50];
 263     int index;
 264     LV_COLUMN lvC;
 265
 266     /* Create columns. */
 267     lvC.mask = LVCF_FMT | LVCF_WIDTH | LVCF_TEXT | LVCF_SUBITEM;
 268     lvC.pszText = szText;
 269
 270     /* Load the column labels from the resource file. */
 271     for (index = 0; index < MAX_LIST_COLUMNS; index++) {
 272         lvC.iSubItem = index;
 273         lvC.cx = default_column_widths[index];
 274         lvC.fmt = column_alignment[index];
 275         LoadString(hInst, IDS_LIST_COLUMN_FIRST + index, szText, sizeof(szText)/sizeof(TCHAR));
 276         if (ListView_InsertColumn(hWndListView, index, &lvC) == -1) return FALSE;
 277     }
 278     return TRUE;
 279 }
 280
 281 /* OnGetDispInfo - processes the LVN_GETDISPINFO notification message.  */
 282
 283 static void OnGetDispInfo(NMLVDISPINFO* plvdi)
 284 {
 285     static TCHAR buffer[200];
 286     static TCHAR reg_szT[]               = {'R','E','G','_','S','Z',0},
 287                  reg_expand_szT[]        = {'R','E','G','_','E','X','P','A','N','D','_','S','Z',0},
 288                  reg_binaryT[]           = {'R','E','G','_','B','I','N','A','R','Y',0},
 289                  reg_dwordT[]            = {'R','E','G','_','D','W','O','R','D',0},
 290                  reg_dword_big_endianT[] = {'R','E','G','_','D','W','O','R','D','_',
 291                                             'B','I','G','_','E','N','D','I','A','N',0},
 292                  reg_multi_szT[]         = {'R','E','G','_','M','U','L','T','I','_','S','Z',0},
 293                  reg_linkT[]             = {'R','E','G','_','L','I','N','K',0},
 294                  reg_resource_listT[]    = {'R','E','G','_','R','E','S','O','U','R','C','E','_','L','I','S','T',0},
 295                  reg_noneT[]             = {'R','E','G','_','N','O','N','E',0},
 296                  emptyT[]                = {0};
 297
 298     plvdi->item.pszText = NULL;
 299     plvdi->item.cchTextMax = 0;
 300
 301     switch (plvdi->item.iSubItem) {
 302     case 0:
 303         plvdi->item.pszText = (LPSTR)g_pszDefaultValueName;
 304         break;
 305     case 1:
 306         switch (((LINE_INFO*)plvdi->item.lParam)->dwValType) {
 307         case REG_SZ:
 308             plvdi->item.pszText = reg_szT;
 309             break;
 310         case REG_EXPAND_SZ:
 311             plvdi->item.pszText = reg_expand_szT;
 312             break;
 313         case REG_BINARY:
 314             plvdi->item.pszText = reg_binaryT;
 315             break;
 316         case REG_DWORD:
 317             plvdi->item.pszText = reg_dwordT;
 318             break;
 319         case REG_DWORD_BIG_ENDIAN:
 320             plvdi->item.pszText = reg_dword_big_endianT;
 321             break;
 322         case REG_MULTI_SZ:
 323             plvdi->item.pszText = reg_multi_szT;
 324             break;
 325         case REG_LINK:
 326             plvdi->item.pszText = reg_linkT;
 327             break;
 328         case REG_RESOURCE_LIST:
 329             plvdi->item.pszText = reg_resource_listT;
 330             break;
 331         case REG_NONE:
 332             plvdi->item.pszText = reg_noneT;
 333             break;
 334         default:
 335           {
 336             TCHAR szUnknownFmt[64];
 337             LoadString(hInst, IDS_REGISTRY_UNKNOWN_TYPE, szUnknownFmt, COUNT_OF(szUnknownFmt));
 338             wsprintf(buffer, szUnknownFmt, plvdi->item.lParam);
 339             plvdi->item.pszText = buffer;
 340             break;
 341           }
 342         }
 343         break;
 344     case 2:
 345         plvdi->item.pszText = g_szValueNotSet;
 346         break;
 347     case 3:
 348         plvdi->item.pszText = emptyT;
 349         break;
 350     }
 351 }
 352
 353 static int CALLBACK CompareFunc(LPARAM lParam1, LPARAM lParam2, LPARAM lParamSort)
 354 {
 355     LINE_INFO*l, *r;
 356     l = (LINE_INFO*)lParam1;
 357     r = (LINE_INFO*)lParam2;
 358     if (!l->name) return -1;
 359     if (!r->name) return +1;
 360
 361     if (g_columnToSort == ~0U)
 362         g_columnToSort = 0;
 363
 364     if (g_columnToSort == 1 && l->dwValType != r->dwValType)
 365         return g_invertSort ? (int)r->dwValType - (int)l->dwValType : (int)l->dwValType - (int)r->dwValType;
 366     if (g_columnToSort == 2) {
 367         /* FIXME: Sort on value */
 368     }
 369     return g_invertSort ? lstrcmpiW(r->name, l->name) : lstrcmpiW(l->name, r->name);
 370 }
 371
 372 HWND StartValueRename(HWND hwndLV)
 373 {
 374     int item;
 375
 376     item = ListView_GetNextItem(hwndLV, -1, LVNI_FOCUSED | LVNI_SELECTED);
 377     if (item < 1) { /* cannot rename default key */
 378         MessageBeep(MB_ICONHAND);
 379         return 0;
 380     }
 381     return ListView_EditLabel(hwndLV, item);
 382 }
 383
 384 static BOOL _CmdWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 385 {
 386     switch (LOWORD(wParam)) {
 387         /*    case ID_FILE_OPEN: */
 388         /*        break; */
 389     default:
 390         return FALSE;
 391     }
 392     return TRUE;
 393 }
 394
 395 static LRESULT CALLBACK ListWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 396 {
 397     switch (message) {
 398     case WM_COMMAND:
 399         if (!_CmdWndProc(hWnd, message, wParam, lParam)) {
 400             return CallWindowProc(g_orgListWndProc, hWnd, message, wParam, lParam);
 401         }
 402         break;
 403     case WM_NOTIFY_REFLECT:
 404         switch (((LPNMHDR)lParam)->code) {
 405
 406         case LVN_BEGINLABELEDIT:
 407             if (!((NMLVDISPINFO *)lParam)->item.iItem)
 408                 return 1;
 409             return 0;
 410         case LVN_GETDISPINFO:
 411             OnGetDispInfo((NMLVDISPINFO*)lParam);
 412             break;
 413         case LVN_COLUMNCLICK:
 414             if (g_columnToSort == ((LPNMLISTVIEW)lParam)->iSubItem)
 415                 g_invertSort = !g_invertSort;
 416             else {
 417                 g_columnToSort = ((LPNMLISTVIEW)lParam)->iSubItem;
 418                 g_invertSort = FALSE;
 419             }
 420
 421             SendMessage(hWnd, LVM_SORTITEMS, (WPARAM)hWnd, (LPARAM)CompareFunc);
 422             break;
 423         case LVN_ENDLABELEDIT: {
 424                 LPNMLVDISPINFO dispInfo = (LPNMLVDISPINFO)lParam;
 425                 LPTSTR valueName = GetItemText(hWnd, dispInfo->item.iItem);
 426                 LPSTR pathA;
 427                 LONG ret;
 428                 if (!valueName) return -1; /* cannot rename a default value */
 429                 pathA = GetMultiByteString(g_currentPath);
 430                 ret = RenameValue(hWnd, g_currentRootKey, pathA, valueName, dispInfo->item.pszText);
 431                 HeapFree(GetProcessHeap(), 0, pathA);
 432                 if (ret)
 433                 {
 434                     WCHAR* itemTextW = GetWideString(dispInfo->item.pszText);
 435                     RefreshListView(hWnd, g_currentRootKey, g_currentPath, itemTextW);
 436                     HeapFree(GetProcessHeap(), 0, itemTextW);
 437                 }
 438                 HeapFree(GetProcessHeap(), 0, valueName);
 439                 return 0;
 440             }
 441         case NM_RETURN: {
 442                 int cnt = ListView_GetNextItem(hWnd, -1, LVNI_FOCUSED | LVNI_SELECTED);
 443                 if (cnt != -1)
 444                     SendMessage(hFrameWnd, WM_COMMAND, ID_EDIT_MODIFY, 0);
 445             }
 446             break;
 447         case NM_DBLCLK: {
 448                 NMITEMACTIVATE* nmitem = (LPNMITEMACTIVATE)lParam;
 449                 LVHITTESTINFO info;
 450
 451                 /* if (nmitem->hdr.hwndFrom != hWnd) break; unnecessary because of WM_NOTIFY_REFLECT */
 452                 /*            if (nmitem->hdr.idFrom != IDW_LISTVIEW) break;  */
 453                 /*            if (nmitem->hdr.code != ???) break;  */
 454 #ifdef _MSC_VER
 455                 switch (nmitem->uKeyFlags) {
 456                 case LVKF_ALT:     /*  The ALT key is pressed.   */
 457                     /* properties dialog box ? */
 458                     break;
 459                 case LVKF_CONTROL: /*  The CTRL key is pressed. */
 460                     /* run dialog box for providing parameters... */
 461                     break;
 462                 case LVKF_SHIFT:   /*  The SHIFT key is pressed.    */
 463                     break;
 464                 }
 465 #endif
 466                 info.pt.x = nmitem->ptAction.x;
 467                 info.pt.y = nmitem->ptAction.y;
 468                 if (ListView_HitTest(hWnd, &info) != -1) {
 469                     ListView_SetItemState(hWnd, -1, 0, LVIS_FOCUSED|LVIS_SELECTED);
 470                     ListView_SetItemState(hWnd, info.iItem, LVIS_FOCUSED|LVIS_SELECTED,
 471                         LVIS_FOCUSED|LVIS_SELECTED);
 472                     SendMessage(hFrameWnd, WM_COMMAND, ID_EDIT_MODIFY, 0);
 473                 }
 474             }
 475             break;
 476
 477         default:
 478             return 0; /* shouldn't call default ! */
 479         }
 480         break;
 481     case WM_CONTEXTMENU: {
 482         int cnt = ListView_GetNextItem(hWnd, -1, LVNI_SELECTED);
 483         TrackPopupMenu(GetSubMenu(hPopupMenus, cnt == -1 ? PM_NEW : PM_MODIFYVALUE),
 484                        TPM_RIGHTBUTTON, (short)LOWORD(lParam), (short)HIWORD(lParam),
 485                        0, hFrameWnd, NULL);
 486         break;
 487     }
 488     default:
 489         return CallWindowProc(g_orgListWndProc, hWnd, message, wParam, lParam);
 490     }
 491     return 0;
 492 }
 493
 494
 495 HWND CreateListView(HWND hwndParent, UINT id)
 496 {
 497     RECT rcClient;
 498     HWND hwndLV;
 499
 500     /* prepare strings */
 501     LoadString(hInst, IDS_REGISTRY_VALUE_NOT_SET, g_szValueNotSet, COUNT_OF(g_szValueNotSet));
 502     LoadStringW(hInst, IDS_REGISTRY_VALUE_NOT_SET, g_szValueNotSetW, COUNT_OF(g_szValueNotSetW));
 503
 504     /* Get the dimensions of the parent window's client area, and create the list view control.  */
 505     GetClientRect(hwndParent, &rcClient);
 506     hwndLV = CreateWindowEx(WS_EX_CLIENTEDGE, WC_LISTVIEW, _T("List View"),
 507                             WS_VISIBLE | WS_CHILD | WS_TABSTOP | LVS_REPORT | LVS_EDITLABELS,
 508                             0, 0, rcClient.right, rcClient.bottom,
 509                             hwndParent, (HMENU)ULongToHandle(id), hInst, NULL);
 510     if (!hwndLV) return NULL;
 511     SendMessage(hwndLV, LVM_SETEXTENDEDLISTVIEWSTYLE, 0, LVS_EX_FULLROWSELECT);
 512
 513     /* Initialize the image list */
 514     if (!InitListViewImageList(hwndLV)) goto fail;
 515     if (!CreateListColumns(hwndLV)) goto fail;
 516     g_orgListWndProc = (WNDPROC) SetWindowLongPtr(hwndLV, GWLP_WNDPROC, (LPARAM)ListWndProc);
 517     return hwndLV;
 518 fail:
 519     DestroyWindow(hwndLV);
 520     return NULL;
 521 }
 522
 523 BOOL RefreshListView(HWND hwndLV, HKEY hKeyRoot, LPCWSTR keyPath, LPCWSTR highlightValue)
 524 {
 525     BOOL result = FALSE;
 526     DWORD max_sub_key_len;
 527     DWORD max_val_name_len, valNameLen;
 528     DWORD max_val_size, valSize;
 529     DWORD val_count, index, valType;
 530     WCHAR* valName = 0;
 531     BYTE* valBuf = 0;
 532     HKEY hKey = 0;
 533     LONG errCode;
 534     INT count, i;
 535     LVITEMW item;
 536
 537     if (!hwndLV) return FALSE;
 538
 539     SendMessageW(hwndLV, WM_SETREDRAW, FALSE, 0);
 540
 541     errCode = RegOpenKeyExW(hKeyRoot, keyPath, 0, KEY_READ, &hKey);
 542     if (errCode != ERROR_SUCCESS) goto done;
 543
 544     count = ListView_GetItemCount(hwndLV);
 545     for (i = 0; i < count; i++) {
 546         item.mask = LVIF_PARAM;
 547         item.iItem = i;
 548         SendMessageW( hwndLV, LVM_GETITEM, 0, (LPARAM)&item );
 549         HeapFree(GetProcessHeap(), 0, ((LINE_INFO*)item.lParam)->name);
 550         HeapFree(GetProcessHeap(), 0, (void*)item.lParam);
 551     }
 552     g_columnToSort = ~0U;
 553     SendMessageW( hwndLV, LVM_DELETEALLITEMS, 0, 0L );
 554
 555     /* get size information and resize the buffers if necessary */
 556     errCode = RegQueryInfoKeyW(hKey, NULL, NULL, NULL, NULL, &max_sub_key_len, NULL,
 557                               &val_count, &max_val_name_len, &max_val_size, NULL, NULL);
 558     if (errCode != ERROR_SUCCESS) goto done;
 559
 560     /* account for the terminator char */
 561     max_val_name_len++;
 562     max_val_size++;
 563
 564     valName = HeapAlloc(GetProcessHeap(), 0, max_val_name_len * sizeof(WCHAR));
 565     valBuf = HeapAlloc(GetProcessHeap(), 0, max_val_size);
 566     if (RegQueryValueExW(hKey, NULL, NULL, &valType, valBuf, &valSize) == ERROR_FILE_NOT_FOUND) {
 567         AddEntryToList(hwndLV, NULL, REG_SZ, NULL, 0, !highlightValue);
 568     }
 569     for(index = 0; index < val_count; index++) {
 570         BOOL bSelected = (valName == highlightValue); /* NOT a bug, we check for double NULL here */
 571         valNameLen = max_val_name_len;
 572         valSize = max_val_size;
 573         valType = 0;
 574         errCode = RegEnumValueW(hKey, index, valName, &valNameLen, NULL, &valType, valBuf, &valSize);
 575         if (errCode != ERROR_SUCCESS) goto done;
 576         valBuf[valSize] = 0;
 577         if (valName && highlightValue && !lstrcmpW(valName, highlightValue))
 578             bSelected = TRUE;
 579         AddEntryToList(hwndLV, valName[0] ? valName : NULL, valType, valBuf, valSize, bSelected);
 580     }
 581     SendMessageW(hwndLV, LVM_SORTITEMS, (WPARAM)hwndLV, (LPARAM)CompareFunc);
 582
 583     g_currentRootKey = hKeyRoot;
 584     if (keyPath != g_currentPath) {
 585         HeapFree(GetProcessHeap(), 0, g_currentPath);
 586         g_currentPath = HeapAlloc(GetProcessHeap(), 0, (lstrlenW(keyPath) + 1) * sizeof(WCHAR));
 587         if (!g_currentPath) goto done;
 588         lstrcpyW(g_currentPath, keyPath);
 589     }
 590
 591     result = TRUE;
 592
 593 done:
 594     HeapFree(GetProcessHeap(), 0, valBuf);
 595     HeapFree(GetProcessHeap(), 0, valName);
 596     SendMessageW(hwndLV, WM_SETREDRAW, TRUE, 0);
 597     if (hKey) RegCloseKey(hKey);
 598
 599     return result;
 600 }