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/ Windows 95 API Bible / Windows 95 API Bible 3 Disc Set.iso / Win32 API Bible Book 1 of 3 / CHAPTER4 / DEFWNDPS.C < prev    next >
C/C++ Source or Header  |  1996-01-06  |  7KB  |  211 lines
  1.  
  2. #include <windows.h>  
  3. #include "DefWndPs.h" 
  4.  
  5.  
  6. #if defined (WIN32)
  7.     #define IS_WIN32 TRUE
  8. #else
  9.     #define IS_WIN32 FALSE
  10. #endif
  11.  
  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
  15.  
  16. HINSTANCE hInst;   // current instance
  17.  
  18. LPCTSTR lpszAppName  = "MyApp";
  19. LPCTSTR lpszTitle    = "DeferWindowPos()"; 
  20.  
  21. BOOL RegisterWin95( CONST WNDCLASS* lpwc );
  22.  
  23. int APIENTRY WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance,
  24.                       LPTSTR lpCmdLine, int nCmdShow)
  25. {
  26.    MSG      msg;
  27.    HWND     hWnd; 
  28.    WNDCLASS wc;
  29.  
  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;              
  42.  
  43.    if ( IS_WIN95 )
  44.    {
  45.       if ( !RegisterWin95( &wc ) )
  46.          return( FALSE );
  47.    }
  48.    else if ( !RegisterClass( &wc ) )
  49.       return( FALSE );
  50.  
  51.    hInst = hInstance; 
  52.  
  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.                       );
  65.  
  66.    if ( !hWnd ) 
  67.       return( FALSE );
  68.  
  69.    ShowWindow( hWnd, nCmdShow ); 
  70.    UpdateWindow( hWnd );         
  71.  
  72.    while( GetMessage( &msg, NULL, 0, 0) )   
  73.    {
  74.       TranslateMessage( &msg ); 
  75.       DispatchMessage( &msg );  
  76.    }
  77.  
  78.    return( msg.wParam ); 
  79. }
  80.  
  81.  
  82. BOOL RegisterWin95( CONST WNDCLASS* lpwc )
  83. {
  84.    WNDCLASSEX wcex;
  85.  
  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;
  96.  
  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 );
  103.             
  104.    return RegisterClassEx( &wcex );
  105. }
  106.  
  107. LRESULT CALLBACK WndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
  108. {
  109. static HWND hStatic = NULL;
  110. static HWND hEdit   = NULL;
  111.  
  112.    switch( uMsg )
  113.    {
  114.       case WM_CREATE :
  115.                // Create a static and edit control that will be sized to match
  116.                // the parent window's client area.
  117.                //.............................................................
  118.                hStatic = CreateWindow( "STATIC", "Here is the Static Control",
  119.                                        WS_CHILD | WS_BORDER |
  120.                                        WS_VISIBLE |
  121.                                        SS_LEFT,
  122.                                        0, 0,
  123.                                        CW_USEDEFAULT,
  124.                                        CW_USEDEFAULT,
  125.                                        hWnd,
  126.                                        (HMENU) 101,   // The control ID.
  127.                                        hInst, NULL );
  128.  
  129.                hEdit = CreateWindow( "EDIT", "Here is the Edit Control", 
  130.                                      WS_CHILD | WS_BORDER |
  131.                                      WS_VISIBLE | 
  132.                                      ES_LEFT | ES_MULTILINE,
  133.                                      0, 20,         // Set the upper left
  134.                                                     // corner
  135.                                      CW_USEDEFAULT, // to be under the static 
  136.                                      CW_USEDEFAULT, // window.
  137.                                      hWnd,
  138.                                      (HMENU) 102,   // The control ID.
  139.                                      hInst, NULL );
  140.                break;
  141.  
  142.       case WM_SIZE :
  143.               {
  144.                  // The parent window was resized. Size the static and edit
  145.                  // controls to match the parent window's client area but
  146.                  // don't move the the controls.
  147.                  //.........................................................
  148.                  HDWP hdwp = BeginDeferWindowPos(2);
  149.  
  150.                  hdwp = DeferWindowPos( hdwp, hStatic, NULL, 0, 0,
  151.                                         LOWORD( lParam ), 20,
  152.                                         SWP_NOACTIVATE | SWP_NOZORDER |
  153.                                         SWP_NOMOVE );
  154.  
  155.                  hdwp = DeferWindowPos( hdwp, hEdit, NULL, 0, 0,
  156.                                         LOWORD( lParam ), HIWORD( lParam ),
  157.                                         SWP_NOACTIVATE | SWP_NOZORDER |
  158.                                         SWP_NOMOVE );
  159.  
  160.                  EndDeferWindowPos( hdwp );
  161.               }
  162.               break;
  163.  
  164.       case WM_COMMAND :
  165.               switch( LOWORD( wParam ) )
  166.               {
  167.                  case IDM_ABOUT :
  168.                         DialogBox( hInst, "AboutBox", hWnd, (DLGPROC)About );
  169.                         break;
  170.  
  171.                  case IDM_EXIT :
  172.                         DestroyWindow( hWnd );
  173.                         break;
  174.               }
  175.               break;
  176.       
  177.       case WM_DESTROY :
  178.               PostQuitMessage(0);
  179.               break;
  180.  
  181.       default :
  182.             return( DefWindowProc( hWnd, uMsg, wParam, lParam ) );
  183.    }
  184.  
  185.    return( 0L );
  186. }
  187.  
  188.  
  189. LRESULT CALLBACK About( HWND hDlg,           
  190.                         UINT message,        
  191.                         WPARAM wParam,       
  192.                         LPARAM lParam)
  193. {
  194.    switch (message) 
  195.    {
  196.        case WM_INITDIALOG: 
  197.                return (TRUE);
  198.  
  199.        case WM_COMMAND:                              
  200.                if (   LOWORD(wParam) == IDOK         
  201.                    || LOWORD(wParam) == IDCANCEL)    
  202.                {
  203.                        EndDialog(hDlg, TRUE);        
  204.                        return (TRUE);
  205.                }
  206.                break;
  207.    }
  208.  
  209.    return (FALSE); 
  210. }
  211.