dll/cpl/sysdm/general.c

   1 /*
   2  * PROJECT:     ReactOS System Control Panel Applet
   3  * LICENSE:     GPL - See COPYING in the top level directory
   4  * FILE:        dll/cpl/sysdm/general.c
   5  * PURPOSE:     General System Information
   6  * COPYRIGHT:   Copyright Thomas Weidenmueller <w3seek@reactos.org>
   7  *              Copyright 2006 Ged Murphy <gedmurphy@gmail.com>
   8  *              Copyright 2006-2007 Colin Finck <mail@colinfinck.de>
   9  *
  10  */
  11
  12 #include "precomp.h"
  13
  14 #include <winnls.h>
  15 #include <powrprof.h>
  16 #include <buildno.h>
  17 #include <strsafe.h>
  18
  19 #define ANIM_STEP 2
  20 #define ANIM_TIME 50
  21
  22 typedef struct _IMGINFO
  23 {
  24     HBITMAP hBitmap;
  25     INT cxSource;
  26     INT cySource;
  27     INT iPLanes;
  28     INT iBits;
  29 } IMGINFO, *PIMGINFO;
  30
  31 PIMGINFO pImgInfo = NULL;
  32 BLENDFUNCTION BlendFunc = {AC_SRC_OVER, 0, 255, AC_SRC_ALPHA};
  33
  34 VOID ShowLastWin32Error(HWND hWndOwner)
  35 {
  36     LPTSTR lpMsg;
  37     DWORD LastError;
  38
  39     LastError = GetLastError();
  40     if (LastError == ERROR_SUCCESS)
  41         return;
  42
  43     if (!FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
  44                        FORMAT_MESSAGE_FROM_SYSTEM |
  45                        FORMAT_MESSAGE_IGNORE_INSERTS,
  46                        NULL,
  47                        LastError,
  48                        LANG_USER_DEFAULT,
  49                        (LPTSTR)&lpMsg,
  50                        0, NULL))
  51     {
  52         return;
  53     }
  54
  55     MessageBox(hWndOwner, lpMsg, NULL, MB_OK | MB_ICONERROR);
  56     LocalFree(lpMsg);
  57 }
  58
  59
  60 static VOID InitLogo(HWND hwndDlg)
  61 {
  62     BITMAP logoBitmap;
  63     BITMAP maskBitmap;
  64     BITMAPINFO bmpi;
  65     HDC hDC = GetDC(hwndDlg);
  66     HDC hDCLogo = CreateCompatibleDC(NULL);
  67     HDC hDCMask = CreateCompatibleDC(NULL);
  68     HBITMAP hMask, hLogo, hAlphaLogo = NULL;
  69     COLORREF *pBits;
  70     INT line, column;
  71
  72     ZeroMemory(pImgInfo, sizeof(*pImgInfo));
  73     ZeroMemory(&bmpi, sizeof(bmpi));
  74
  75     hLogo = (HBITMAP)LoadImage(hApplet, MAKEINTRESOURCE(IDB_ROSBMP), IMAGE_BITMAP, 0, 0, LR_DEFAULTCOLOR);
  76     hMask = (HBITMAP)LoadImage(hApplet, MAKEINTRESOURCE(IDB_ROSMASK), IMAGE_BITMAP, 0, 0, LR_DEFAULTCOLOR);
  77
  78     if (hLogo != NULL && hMask != NULL)
  79     {
  80         GetObject(hLogo, sizeof(BITMAP), &logoBitmap);
  81         GetObject(hMask, sizeof(BITMAP), &maskBitmap);
  82
  83         if(logoBitmap.bmHeight != maskBitmap.bmHeight || logoBitmap.bmWidth != maskBitmap.bmWidth)
  84             return;
  85
  86         pImgInfo->cxSource = logoBitmap.bmWidth;
  87         pImgInfo->cySource = logoBitmap.bmHeight;
  88
  89         bmpi.bmiHeader.biSize = sizeof(BITMAPINFO);
  90         bmpi.bmiHeader.biWidth = logoBitmap.bmWidth;
  91         bmpi.bmiHeader.biHeight = logoBitmap.bmHeight;
  92         bmpi.bmiHeader.biPlanes = 1;
  93         bmpi.bmiHeader.biBitCount = 32;
  94         bmpi.bmiHeader.biCompression = BI_RGB;
  95         bmpi.bmiHeader.biSizeImage = 4 * logoBitmap.bmWidth * logoBitmap.bmHeight;
  96
  97         hAlphaLogo = CreateDIBSection(hDC, &bmpi, DIB_RGB_COLORS, (PVOID*)&pBits, 0, 0);
  98
  99         if(!hAlphaLogo)
 100             return;
 101
 102         SelectObject(hDCLogo, hLogo);
 103         SelectObject(hDCMask, hMask);
 104
 105         for(line = logoBitmap.bmHeight - 1; line >= 0; line--)
 106         {
 107             for(column = 0; column < logoBitmap.bmWidth; column++)
 108             {
 109                 COLORREF alpha = GetPixel(hDCMask, column, line) & 0xFF;
 110                 COLORREF Color = GetPixel(hDCLogo, column, line);
 111                 DWORD r, g, b;
 112
 113                 r = GetRValue(Color) * alpha / 255;
 114                 g = GetGValue(Color) * alpha / 255;
 115                 b = GetBValue(Color) * alpha / 255;
 116
 117                 *pBits++ =  b | g << 8 | r << 16 | alpha << 24;
 118             }
 119           }
 120     }
 121
 122     pImgInfo->hBitmap = hAlphaLogo;
 123     pImgInfo->cxSource = logoBitmap.bmWidth;
 124     pImgInfo->cySource = logoBitmap.bmHeight;
 125     pImgInfo->iBits = logoBitmap.bmBitsPixel;
 126     pImgInfo->iPLanes = logoBitmap.bmPlanes;
 127
 128     DeleteObject(hLogo);
 129     DeleteObject(hMask);
 130     DeleteDC(hDCLogo);
 131     DeleteDC(hDCMask);
 132
 133 }
 134
 135 LRESULT CALLBACK RosImageProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 136 {
 137     static UINT timerid = 0, top = 0, offset;
 138     static HBITMAP hCreditsBitmap;
 139
 140     switch (uMsg)
 141     {
 142         case WM_LBUTTONDBLCLK:
 143             if (wParam & (MK_CONTROL | MK_SHIFT))
 144             {
 145                 if (timerid == 0)
 146                 {
 147                     HDC hCreditsDC, hLogoDC;
 148                     HFONT hFont;
 149                     NONCLIENTMETRICS ncm;
 150                     RECT rcCredits;
 151                     TCHAR szCredits[2048];
 152                     INT iDevsHeight;
 153
 154                     top = 0;
 155                     offset = 0;
 156                     hCreditsDC = CreateCompatibleDC(GetDC(NULL));
 157                     hLogoDC = CreateCompatibleDC(hCreditsDC);
 158
 159                     if (hCreditsDC == NULL || hLogoDC == NULL)
 160                         break;
 161
 162                     SetRect(&rcCredits, 0, 0, 0, 0);
 163
 164                     ncm.cbSize = sizeof(NONCLIENTMETRICS);
 165                     SystemParametersInfo(SPI_GETNONCLIENTMETRICS, sizeof(NONCLIENTMETRICS), &ncm, 0);
 166
 167                     hFont = CreateFontIndirect(&ncm.lfMessageFont);
 168                     SelectObject(hCreditsDC, hFont);
 169
 170                     LoadString(hApplet, IDS_DEVS, szCredits, sizeof(szCredits) / sizeof(TCHAR));
 171                     DrawText(hCreditsDC, szCredits, -1, &rcCredits, DT_CALCRECT);
 172
 173                     iDevsHeight = rcCredits.bottom - rcCredits.top;
 174
 175                     hCreditsBitmap = CreateBitmap(pImgInfo->cxSource, (2 * pImgInfo->cySource) + iDevsHeight + 1, pImgInfo->iPLanes, pImgInfo->iBits, NULL);
 176
 177                     if(!hCreditsBitmap)
 178                         break;
 179
 180                     SelectObject(hLogoDC, pImgInfo->hBitmap);
 181                     SelectObject(hCreditsDC, hCreditsBitmap);
 182
 183                     offset += pImgInfo->cySource;
 184
 185                     SetRect(&rcCredits, 0, 0, pImgInfo->cxSource, (2 * pImgInfo->cySource) + iDevsHeight + 1);
 186                     FillRect(hCreditsDC, &rcCredits, GetSysColorBrush(COLOR_3DFACE));
 187
 188                     SetRect(&rcCredits, 0, offset, pImgInfo->cxSource, offset + iDevsHeight + 1);
 189                     SetBkMode(hCreditsDC, TRANSPARENT);
 190
 191                     OffsetRect(&rcCredits, 1, 1);
 192                     SetTextColor(hCreditsDC, GetSysColor(COLOR_BTNSHADOW));
 193                     DrawText(hCreditsDC, szCredits, -1, &rcCredits, DT_CENTER);
 194
 195                     OffsetRect(&rcCredits, -1, -1);
 196                     SetTextColor(hCreditsDC, GetSysColor(COLOR_WINDOWTEXT));
 197                     DrawText(hCreditsDC, szCredits, -1, &rcCredits, DT_CENTER);
 198
 199                     offset += iDevsHeight;
 200
 201                     AlphaBlend(hCreditsDC, 0, 0, pImgInfo->cxSource, pImgInfo->cySource, hLogoDC, 0,  0, pImgInfo->cxSource, pImgInfo->cySource, BlendFunc);
 202                     AlphaBlend(hCreditsDC, 0, offset, pImgInfo->cxSource, pImgInfo->cySource, hLogoDC, 0,  0, pImgInfo->cxSource, pImgInfo->cySource, BlendFunc);
 203
 204                     DeleteDC(hLogoDC);
 205                     DeleteDC(hCreditsDC);
 206
 207                     timerid = SetTimer(hwnd, 1, ANIM_TIME, NULL);
 208                 }
 209             }
 210             break;
 211         case WM_LBUTTONDOWN:
 212             if (timerid)
 213             {
 214                 RECT rcCredits;
 215                 HDC hDC = GetDC(hwnd);
 216
 217                 GetClientRect(hwnd, &rcCredits);
 218                 SetRect(&rcCredits, 0, 0, rcCredits.right, pImgInfo->cySource);
 219                 FillRect(hDC, &rcCredits, GetSysColorBrush(COLOR_3DFACE));
 220
 221                 KillTimer(hwnd, timerid);
 222                 DeleteObject(hCreditsBitmap);
 223                 InvalidateRect(hwnd, NULL, FALSE);
 224
 225                 top = 0;
 226                 timerid = 0;
 227             }
 228             break;
 229         case WM_TIMER:
 230             top += ANIM_STEP;
 231
 232             if (top > offset)
 233             {
 234                 RECT rcCredits;
 235                 HDC hDC = GetDC(hwnd);
 236
 237                 GetClientRect(hwnd, &rcCredits);
 238                 SetRect(&rcCredits, 0, 0, rcCredits.right, pImgInfo->cySource);
 239                 FillRect(hDC, &rcCredits, GetSysColorBrush(COLOR_3DFACE));
 240
 241                 KillTimer(hwnd, timerid);
 242                 DeleteObject(hCreditsBitmap);
 243
 244                 top = 0;
 245                 timerid = 0;
 246             }
 247
 248             InvalidateRect(hwnd, NULL, FALSE);
 249             break;
 250         case WM_PAINT:
 251         {
 252             PAINTSTRUCT PS;
 253             HDC hdcMem, hdc;
 254             LONG left;
 255
 256             hdc = wParam != 0 ? (HDC)wParam : BeginPaint(hwnd, &PS);
 257
 258             GetClientRect(hwnd, &PS.rcPaint);
 259
 260             /* Position image in center of dialog */
 261             left = (PS.rcPaint.right - pImgInfo->cxSource) / 2;
 262             hdcMem = CreateCompatibleDC(hdc);
 263
 264             if (hdcMem != NULL)
 265             {
 266                 if(timerid != 0)
 267                 {
 268                     SelectObject(hdcMem, hCreditsBitmap);
 269                     BitBlt(hdc, left, PS.rcPaint.top, PS.rcPaint.right - PS.rcPaint.left, PS.rcPaint.top + pImgInfo->cySource, hdcMem, 0, top, SRCCOPY);
 270                 }
 271                 else
 272                 {
 273                     SelectObject(hdcMem, pImgInfo->hBitmap);
 274                     AlphaBlend(hdc, left, PS.rcPaint.top, pImgInfo->cxSource, pImgInfo->cySource, hdcMem, 0, 0, pImgInfo->cxSource, pImgInfo->cySource, BlendFunc);
 275                 }
 276
 277                 DeleteDC(hdcMem);
 278             }
 279
 280             if (wParam == 0)
 281                 EndPaint(hwnd,&PS);
 282             break;
 283         }
 284     }
 285     return TRUE;
 286 }
 287
 288 static VOID SetRegTextData(HWND hwnd, HKEY hKey, LPTSTR Value, UINT uID)
 289 {
 290     LPTSTR lpBuf = NULL;
 291     DWORD BufSize = 0;
 292     DWORD Type;
 293
 294     if (RegQueryValueEx(hKey, Value, NULL, &Type, NULL, &BufSize) == ERROR_SUCCESS)
 295     {
 296         lpBuf = HeapAlloc(GetProcessHeap(), 0, BufSize);
 297
 298         if (!lpBuf)
 299             return;
 300
 301         if (RegQueryValueEx(hKey, Value, NULL, &Type, (PBYTE)lpBuf, &BufSize) == ERROR_SUCCESS)
 302             SetDlgItemText(hwnd, uID, lpBuf);
 303
 304         HeapFree(GetProcessHeap(), 0, lpBuf);
 305     }
 306 }
 307
 308 static INT SetProcNameString(HWND hwnd, HKEY hKey, LPTSTR Value, UINT uID1, UINT uID2)
 309 {
 310     LPTSTR lpBuf = NULL;
 311     DWORD BufSize = 0;
 312     DWORD Type;
 313     INT Ret = 0;
 314     TCHAR szBuf[31];
 315     TCHAR* szLastSpace;
 316     INT LastSpace = 0;
 317
 318     if (RegQueryValueEx(hKey, Value, NULL, &Type, NULL, &BufSize) == ERROR_SUCCESS)
 319     {
 320         lpBuf = HeapAlloc(GetProcessHeap(), 0, BufSize);
 321
 322         if (!lpBuf)
 323             return 0;
 324
 325         if (RegQueryValueEx(hKey, Value, NULL, &Type, (PBYTE)lpBuf, &BufSize) == ERROR_SUCCESS)
 326         {
 327             if (BufSize > ((30 + 1) * sizeof(TCHAR)))
 328             {
 329                 /* Wrap the Processor Name String like XP does:                           *
 330                 *   - Take the first 30 characters and look for the last space.          *
 331                 *     Then wrap the string after this space.                             *
 332                 *   - If no space is found, wrap the string after character 30.          *
 333                 *                                                                        *
 334                 * For example the Processor Name String of a Pentium 4 is right-aligned. *
 335                 * With this wrapping the first line looks centered.                      */
 336
 337                 _tcsncpy(szBuf, lpBuf, 30);
 338                 szBuf[30] = 0;
 339                 szLastSpace = _tcsrchr(szBuf, ' ');
 340
 341                 if (szLastSpace == 0)
 342                 {
 343                     LastSpace = 30;
 344                 }
 345                 else
 346                 {
 347                     LastSpace = (szLastSpace - szBuf);
 348                     szBuf[LastSpace] = 0;
 349                 }
 350
 351                 _tcsncpy(szBuf, lpBuf, LastSpace);
 352
 353                 SetDlgItemText(hwnd, uID1, szBuf);
 354                 SetDlgItemText(hwnd, uID2, lpBuf+LastSpace+1);
 355
 356                 /* Return the number of used lines */
 357                 Ret = 2;
 358             }
 359             else
 360             {
 361                 SetDlgItemText(hwnd, uID1, lpBuf);
 362                 Ret = 1;
 363             }
 364         }
 365
 366         HeapFree(GetProcessHeap(), 0, lpBuf);
 367     }
 368
 369     return Ret;
 370 }
 371
 372 static VOID MakeFloatValueString(DOUBLE* dFloatValue, LPTSTR szOutput, LPTSTR szAppend)
 373 {
 374     TCHAR szDecimalSeparator[4];
 375
 376     /* Get the decimal separator for the current locale */
 377     if (GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_SDECIMAL, szDecimalSeparator, sizeof(szDecimalSeparator) / sizeof(TCHAR)) > 0)
 378     {
 379         UCHAR uDecimals;
 380         UINT uIntegral;
 381
 382         /* Show the value with two decimals */
 383         uIntegral = (UINT)*dFloatValue;
 384         uDecimals = (UCHAR)((UINT)(*dFloatValue * 100) - uIntegral * 100);
 385
 386         wsprintf(szOutput, _T("%u%s%02u %s"), uIntegral, szDecimalSeparator, uDecimals, szAppend);
 387     }
 388 }
 389
 390 static VOID SetProcSpeed(HWND hwnd, HKEY hKey, LPTSTR Value, UINT uID)
 391 {
 392     TCHAR szBuf[64];
 393     DWORD BufSize = sizeof(DWORD);
 394     DWORD Type = REG_SZ;
 395     PROCESSOR_POWER_INFORMATION ppi;
 396
 397     ZeroMemory(&ppi, sizeof(ppi));
 398
 399     if ((CallNtPowerInformation(ProcessorInformation,
 400                                 NULL,
 401                                 0,
 402                                 (PVOID)&ppi,
 403                                 sizeof(ppi)) == STATUS_SUCCESS &&
 404          ppi.CurrentMhz != 0) || RegQueryValueEx(hKey, Value, NULL, &Type, (PBYTE)&ppi.CurrentMhz, &BufSize) == ERROR_SUCCESS)
 405     {
 406         if (ppi.CurrentMhz < 1000)
 407         {
 408             wsprintf(szBuf, _T("%lu MHz"), ppi.CurrentMhz);
 409         }
 410         else
 411         {
 412             double flt = ppi.CurrentMhz / 1000.0;
 413             MakeFloatValueString(&flt, szBuf, _T("GHz"));
 414         }
 415
 416         SetDlgItemText(hwnd, uID, szBuf);
 417     }
 418 }
 419
 420 static VOID GetSystemInformation(HWND hwnd)
 421 {
 422     HKEY hKey;
 423     TCHAR ProcKey[] = _T("HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0");
 424     MEMORYSTATUSEX MemStat;
 425     TCHAR Buf[32];
 426     INT CurMachineLine = IDC_MACHINELINE1;
 427
 428     /*
 429      * Get Processor information
 430      * although undocumented, this information is being pulled
 431      * directly out of the registry instead of via setupapi as it
 432      * contains all the info we need, and should remain static
 433      */
 434     if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, ProcKey, 0, KEY_READ, &hKey) == ERROR_SUCCESS)
 435     {
 436         SetRegTextData(hwnd, hKey, _T("VendorIdentifier"), CurMachineLine);
 437         CurMachineLine++;
 438
 439         CurMachineLine += SetProcNameString(hwnd,
 440                                             hKey,
 441                                             _T("ProcessorNameString"),
 442                                             CurMachineLine,
 443                                             CurMachineLine + 1);
 444
 445         SetProcSpeed(hwnd, hKey, _T("~MHz"), CurMachineLine);
 446         CurMachineLine++;
 447     }
 448
 449     /* Get total physical RAM */
 450     MemStat.dwLength = sizeof(MemStat);
 451
 452     if (GlobalMemoryStatusEx(&MemStat))
 453     {
 454         TCHAR szStr[32];
 455         double dTotalPhys;
 456
 457         if (MemStat.ullTotalPhys > 1024 * 1024 * 1024)
 458         {
 459             UINT i = 0;
 460             static const UINT uStrId[] = { IDS_GIGABYTE, IDS_TERABYTE, IDS_PETABYTE};
 461
 462             // We're dealing with GBs or more
 463             MemStat.ullTotalPhys /= 1024 * 1024;
 464
 465             if (MemStat.ullTotalPhys > 1024 * 1024)
 466             {
 467                 // We're dealing with TBs or more
 468                 MemStat.ullTotalPhys /= 1024;
 469                 i++;
 470
 471                 if (MemStat.ullTotalPhys > 1024 * 1024)
 472                 {
 473                     // We're dealing with PBs or more
 474                     MemStat.ullTotalPhys /= 1024;
 475                     i++;
 476
 477                     dTotalPhys = (double)MemStat.ullTotalPhys / 1024;
 478                 }
 479                 else
 480                 {
 481                     dTotalPhys = (double)MemStat.ullTotalPhys / 1024;
 482                 }
 483             }
 484             else
 485             {
 486                 dTotalPhys = (double)MemStat.ullTotalPhys / 1024;
 487             }
 488
 489             LoadString(hApplet, uStrId[i], szStr, sizeof(szStr) / sizeof(TCHAR));
 490             MakeFloatValueString(&dTotalPhys, Buf, szStr);
 491         }
 492         else
 493         {
 494             // We're dealing with MBs, don't show any decimals
 495             LoadString(hApplet, IDS_MEGABYTE, szStr, sizeof(szStr) / sizeof(TCHAR));
 496             wsprintf(Buf, _T("%u %s"), (UINT)MemStat.ullTotalPhys / 1024 / 1024, szStr);
 497         }
 498
 499         SetDlgItemText(hwnd, CurMachineLine, Buf);
 500     }
 501 }
 502
 503 static VOID GetSystemVersion(HWND hwnd)
 504 {
 505     HWND hRosVersion;
 506     SIZE_T lenStr, lenVersion;
 507     PCWSTR pwszVersion = L" " TEXT(KERNEL_VERSION_RC);
 508     PWSTR pwszStr;
 509
 510     lenVersion = wcslen(pwszVersion);
 511     if (lenVersion == 0)
 512     {
 513         return;
 514     }
 515
 516     hRosVersion = GetDlgItem(hwnd, IDC_ROSVERSION);
 517     if (!hRosVersion)
 518     {
 519         return;
 520     }
 521     lenStr = GetWindowTextLengthW(hRosVersion);
 522     lenStr += lenVersion + 1;
 523     pwszStr = HeapAlloc(GetProcessHeap(), 0, lenStr * sizeof(WCHAR));
 524     if (!pwszStr)
 525     {
 526         return;
 527     }
 528     GetWindowText(hRosVersion, pwszStr, lenStr);
 529
 530     StringCchCatW(pwszStr, lenStr, pwszVersion);
 531     SetWindowText(hRosVersion, pwszStr);
 532
 533     HeapFree(GetProcessHeap(), 0, pwszStr);
 534 }
 535
 536 /* Property page dialog callback */
 537 INT_PTR CALLBACK GeneralPageProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
 538 {
 539     UNREFERENCED_PARAMETER(lParam);
 540     UNREFERENCED_PARAMETER(wParam);
 541
 542     switch (uMsg)
 543     {
 544         case WM_INITDIALOG:
 545             pImgInfo = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IMGINFO));
 546             if (pImgInfo == NULL)
 547             {
 548                 EndDialog(hwndDlg, 0);
 549                 return FALSE;
 550             }
 551
 552             InitLogo(hwndDlg);
 553             SetWindowLongPtr(GetDlgItem(hwndDlg, IDC_ROSIMG), GWLP_WNDPROC, (LONG_PTR)RosImageProc);
 554             GetSystemInformation(hwndDlg);
 555             GetSystemVersion(hwndDlg);
 556             break;
 557
 558         case WM_DESTROY:
 559             HeapFree(GetProcessHeap(), 0, pImgInfo);
 560             break;
 561
 562         case WM_COMMAND:
 563             if (LOWORD(wParam) == IDC_LICENCE)
 564             {
 565                 DialogBox(hApplet, MAKEINTRESOURCE(IDD_LICENCE), hwndDlg, LicenceDlgProc);
 566
 567                 return TRUE;
 568             }
 569             break;
 570
 571         case WM_DRAWITEM:
 572         {
 573             LPDRAWITEMSTRUCT lpDrawItem = (LPDRAWITEMSTRUCT) lParam;
 574
 575             if (lpDrawItem->CtlID == IDC_ROSIMG)
 576             {
 577                 HDC hdcMem;
 578                 LONG left;
 579
 580                 /* Position image in centre of dialog */
 581                 left = (lpDrawItem->rcItem.right - pImgInfo->cxSource) / 2;
 582
 583                 hdcMem = CreateCompatibleDC(lpDrawItem->hDC);
 584                 if (hdcMem != NULL)
 585                 {
 586                     SelectObject(hdcMem, pImgInfo->hBitmap);
 587                     BitBlt(lpDrawItem->hDC,
 588                            left,
 589                            lpDrawItem->rcItem.top,
 590                            lpDrawItem->rcItem.right - lpDrawItem->rcItem.left,
 591                            lpDrawItem->rcItem.bottom - lpDrawItem->rcItem.top,
 592                            hdcMem,
 593                            0,
 594                            0,
 595                            SRCCOPY);
 596                     DeleteDC(hdcMem);
 597                 }
 598             }
 599             return TRUE;
 600         }
 601
 602         case WM_NOTIFY:
 603         {
 604             NMHDR *nmhdr = (NMHDR *)lParam;
 605
 606             if (nmhdr->idFrom == IDC_ROSHOMEPAGE_LINK && nmhdr->code == NM_CLICK)
 607             {
 608                 PNMLINK nml = (PNMLINK)nmhdr;
 609
 610                 ShellExecuteW(hwndDlg, L"open", nml->item.szUrl, NULL, NULL, SW_SHOWNORMAL);
 611             }
 612             break;
 613         }
 614
 615     }
 616
 617     return FALSE;
 618 }