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Check_ReadOnly.cpp
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Check_ReadOnly.cpp：Code Content
  2. #include <windows.h>  
  3. #include "Check_ReadOnly.h" 
  6. #if defined (WIN32)
  7. #define IS_WIN32 TRUE
  8. #else
  9. #define IS_WIN32 FALSE
  10. #endif
  12. #define IS_NT      IS_WIN32 && (BOOL)(GetVersion() < 0x80000000)
  13. #define IS_WIN32S  IS_WIN32 && (BOOL)(!(IS_NT) && (LOBYTE(LOWORD(GetVersion()))<4))
  14. #define IS_WIN95   (BOOL)(!(IS_NT) && !(IS_WIN32S)) && IS_WIN32
  16. HINSTANCE hInst;   // current instance
  18. LPCTSTR lpszAppName  = "MyApp";
  19. LPCTSTR lpszTitle    = "My Application"; 
  21. BOOL RegisterWin95( CONST WNDCLASS* lpwc );
  23. int APIENTRY WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance,
  24.                       LPTSTR lpCmdLine, int nCmdShow)
  25. {
  26.    MSG      msg;
  27.    HWND     hWnd; 
  28.    WNDCLASS wc;
  30.    // Register the main application window class.
  31.    //............................................
  32.    wc.style         = CS_HREDRAW | CS_VREDRAW;
  33.    wc.lpfnWndProc   = (WNDPROC)WndProc;       
  34.    wc.cbClsExtra    = 0;                      
  35.    wc.cbWndExtra    = 0;                      
  36.    wc.hInstance     = hInstance;              
  37.    wc.hIcon         = LoadIcon( hInstance, lpszAppName ); 
  38.    wc.hCursor       = LoadCursor(NULL, IDC_ARROW);
  39.    wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
  40.    wc.lpszMenuName  = lpszAppName;              
  41.    wc.lpszClassName = lpszAppName;              
  43.    if ( IS_WIN95 )
  44.    {
  45.       if ( !RegisterWin95( &wc ) )
  46.          return( FALSE );
  47.    }
  48.    else if ( !RegisterClass( &wc ) )
  49.       return( FALSE );
  51.    hInst = hInstance; 
  53.    // Create the main application window.
  54.    //....................................
  55.    hWnd = CreateWindow( lpszAppName, 
  56.                         lpszTitle,    
  57.                         WS_OVERLAPPEDWINDOW, 
  58.                         CW_USEDEFAULT, 0, 
  59.                         CW_USEDEFAULT, 0,  
  60.                         NULL,              
  61.                         NULL,              
  62.                         hInstance,         
  63.                         NULL               
  64.                       );
  66.    if ( !hWnd ) 
  67.       return( FALSE );
  69.    ShowWindow( hWnd, nCmdShow ); 
  70.    UpdateWindow( hWnd );         
  72.    while( GetMessage( &msg, NULL, 0, 0) )   
  73.    {
  74.       TranslateMessage( &msg ); 
  75.       DispatchMessage( &msg );  
  76.    }
  78.    return( msg.wParam ); 
  79. }
  82. BOOL RegisterWin95( CONST WNDCLASS* lpwc )
  83. {
  84.    WNDCLASSEX wcex;
  86.    wcex.style         = lpwc->style;
  87.    wcex.lpfnWndProc   = lpwc->lpfnWndProc;
  88.    wcex.cbClsExtra    = lpwc->cbClsExtra;
  89.    wcex.cbWndExtra    = lpwc->cbWndExtra;
  90.    wcex.hInstance     = lpwc->hInstance;
  91.    wcex.hIcon         = lpwc->hIcon;
  92.    wcex.hCursor       = lpwc->hCursor;
  93.    wcex.hbrBackground = lpwc->hbrBackground;
  94.    wcex.lpszMenuName  = lpwc->lpszMenuName;
  95.    wcex.lpszClassName = lpwc->lpszClassName;
  97.    // Added elements for Windows 95.
  98.    //...............................
  99.    wcex.cbSize = sizeof(WNDCLASSEX);
  100.    wcex.hIconSm = LoadImage(wcex.hInstance, lpwc->lpszClassName, 
  101.                             IMAGE_ICON, 16, 16,
  102.                             LR_DEFAULTCOLOR );
  104.    return RegisterClassEx( &wcex );
  105. }
  107. LRESULT CALLBACK WndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
  108. {
  109.    switch( uMsg )
  110.    {
  111.       case WM_COMMAND :
  112.               switch( LOWORD( wParam ) )
  113.               {
  114.                  case IDM_TEST :
  115.                         // Check if the file is read-only.
  116.                         //................................
  117.                         if ( GetFileAttributes("FILE.DAT") |
  118.                             FILE_ATTRIBUTE_READONLY )
  119.                         {
  120.                            // Clear the file attributes.
  121.                            //...........................
  122.                            SetFileAttributes("FILE.DAT",FILE_ATTRIBUTE_NORMAL);
  123.                         }
  125.                         DeleteFile("FILE.DAT");
  126.                         break;
  128.                  case IDM_ABOUT :
  129.                         DialogBox( hInst, "AboutBox", hWnd, (DLGPROC)About );
  130.                         break;
  132.                  case IDM_EXIT :
  133.                         DestroyWindow( hWnd );
  134.                         break;
  135.               }
  136.               break;
  137.       
  138.       case WM_DESTROY :
  139.               PostQuitMessage(0);
  140.               break;
  142.       default :
  143.             return( DefWindowProc( hWnd, uMsg, wParam, lParam ) );
  144.    }
  146.    return( 0L );
  147. }
  150. LRESULT CALLBACK About( HWND hDlg,           
  151.                         UINT message,        
  152.                         WPARAM wParam,       
  153.                         LPARAM lParam)
  154. {
  155.    switch (message) 
  156.    {
  157.        case WM_INITDIALOG: 
  158.                return (TRUE);
  160.        case WM_COMMAND:                              
  161.                if (   LOWORD(wParam) == IDOK         
  162.                    || LOWORD(wParam) == IDCANCEL)    
  163.                {
  164.                        EndDialog(hDlg, TRUE);        
  165.                        return (TRUE);
  166.                }
  167.                break;
  168.    }
  170.    return (FALSE); 
  171. }