reactos/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  *
   9  */
  10
  11
  12 #include "precomp.h"
  13
  14 typedef struct _IMGINFO
  15 {
  16     HBITMAP hBitmap;
  17     INT cxSource;
  18     INT cySource;
  19 } IMGINFO, *PIMGINFO;
  20
  21
  22 void
  23 ShowLastWin32Error(HWND hWndOwner)
  24 {
  25   LPTSTR lpMsg;
  26   DWORD LastError;
  27
  28   LastError = GetLastError();
  29
  30   if((LastError == 0) ||
  31       !FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
  32                        FORMAT_MESSAGE_FROM_SYSTEM,
  33                      NULL,
  34                      LastError,
  35                      MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
  36                      (LPTSTR)&lpMsg,
  37                      0,
  38                      NULL))
  39   {
  40     return;
  41   }
  42
  43   MessageBox(hWndOwner, lpMsg, NULL, MB_OK | MB_ICONERROR);
  44
  45   LocalFree((LPVOID)lpMsg);
  46 }
  47
  48
  49 static VOID
  50 InitImageInfo(PIMGINFO ImgInfo)
  51 {
  52     BITMAP bitmap;
  53
  54     ZeroMemory(ImgInfo, sizeof(*ImgInfo));
  55
  56     ImgInfo->hBitmap = LoadImage(hApplet,
  57                                  MAKEINTRESOURCE(IDB_ROSBMP),
  58                                  IMAGE_BITMAP,
  59                                  0,
  60                                  0,
  61                                  LR_DEFAULTCOLOR);
  62
  63     if (ImgInfo->hBitmap != NULL)
  64     {
  65         GetObject(ImgInfo->hBitmap, sizeof(BITMAP), &bitmap);
  66
  67         ImgInfo->cxSource = bitmap.bmWidth;
  68         ImgInfo->cySource = bitmap.bmHeight;
  69     }
  70 }
  71
  72
  73 DWORD WINAPI
  74 GetSystemInformation(HWND hwnd)
  75 {
  76     UNREFERENCED_PARAMETER(hwnd);
  77
  78   return 0;
  79 }
  80
  81
  82 /* Property page dialog callback */
  83 INT_PTR CALLBACK
  84 GeneralPageProc(HWND hwndDlg,
  85                 UINT uMsg,
  86                 WPARAM wParam,
  87                 LPARAM lParam)
  88 {
  89     static IMGINFO ImgInfo;
  90
  91     UNREFERENCED_PARAMETER(lParam);
  92     UNREFERENCED_PARAMETER(wParam);
  93
  94     switch(uMsg)
  95     {
  96         case WM_INITDIALOG:
  97         {
  98             InitImageInfo(&ImgInfo);
  99             GetSystemInformation(hwndDlg);
 100         }
 101         break;
 102
 103         case WM_COMMAND:
 104         {
 105             if (LOWORD(wParam) == IDC_LICENCE)
 106             {
 107                 DialogBox(hApplet,
 108                           MAKEINTRESOURCE(IDD_LICENCE),
 109                           hwndDlg,
 110                           LicenceDlgProc);
 111                 return TRUE;
 112             }
 113         }
 114         break;
 115
 116         case WM_DRAWITEM:
 117         {
 118             LPDRAWITEMSTRUCT lpDrawItem;
 119             lpDrawItem = (LPDRAWITEMSTRUCT) lParam;
 120             if(lpDrawItem->CtlID == IDC_ROSIMG)
 121             {
 122                 HDC hdcMem;
 123                 LONG left;
 124
 125                 /* position image in centre of dialog */
 126                 left = (lpDrawItem->rcItem.right - ImgInfo.cxSource) / 2;
 127
 128                 hdcMem = CreateCompatibleDC(lpDrawItem->hDC);
 129                 if (hdcMem != NULL)
 130                 {
 131                     SelectObject(hdcMem, ImgInfo.hBitmap);
 132                     BitBlt(lpDrawItem->hDC,
 133                            left,
 134                            lpDrawItem->rcItem.top,
 135                            lpDrawItem->rcItem.right - lpDrawItem->rcItem.left,
 136                            lpDrawItem->rcItem.bottom - lpDrawItem->rcItem.top,
 137                            hdcMem,
 138                            0,
 139                            0,
 140                            SRCCOPY);
 141                     DeleteDC(hdcMem);
 142                 }
 143             }
 144             return TRUE;
 145         }
 146
 147     }
 148
 149     return FALSE;
 150 }
 151