C / C++ / MFC

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int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,<br />
                   LPSTR lpCmdLine, int nCmdShow)<br />
{<br />
   WNDCLASS WindowClass;                 // Structure to hold our window's attributes<br />
<br />
   static char szAppName[] = "OFWin";    // Define window class name<br />
   HWND hWnd;                            // Window handle<br />
   MSG msg;                              // Windows message structure<br />
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   // Redraw the window if the size changes<br />
   WindowClass.style   = CS_HREDRAW | CS_VREDRAW;<br />
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   // Define our procedure for message handling<br />
   WindowClass.lpfnWndProc = WindowProc;<br />
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   WindowClass.cbClsExtra = 0;          // No extra bytes after the window class<br />
   WindowClass.cbWndExtra = 0;          // structure or the window instance<br />
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   WindowClass.hInstance = hInstance;   // Application instance handle<br />
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   // Set default application icon<br />
   WindowClass.hIcon = LoadIcon(0, IDI_APPLICATION);<br />
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   // Set window cursor to be the standard arrow<br />
   WindowClass.hCursor = LoadCursor(0, IDC_ARROW);<br />
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   // Set gray brush for background color<br />
   WindowClass.hbrBackground = static_cast<HBRUSH>(GetStockObject(GRAY_BRUSH));<br />
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   WindowClass.lpszMenuName = 0;           // No menu, so no menu resource name<br />
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   WindowClass.lpszClassName = szAppName;  // Set class name<br />
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   // Now register our window class<br />
   RegisterClass(&WindowClass);<br />
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   //  Now we can create the window<br />
   hWnd = CreateWindow(<br />
          szAppName,                       // the window class name<br />
          "A Basic Window the Hard Way",   // The window title<br />
          WS_OVERLAPPEDWINDOW,             // Window style as overlapped<br />
          CW_USEDEFAULT,         // Default screen position of upper left<br />
          CW_USEDEFAULT,         // corner of our window as x,y...<br />
          CW_USEDEFAULT,         // Default window size<br />
          CW_USEDEFAULT,         // .... <br />
          0,                     // No parent window<br />
          0,                     // No menu<br />
          hInstance,             // Program Instance handle<br />
          0                      // No window creation data<br />
        );<br />
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   ShowWindow(hWnd, nCmdShow);   // Display the window<br />
   UpdateWindow(hWnd);           // Cause window client area to be drawn<br />
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   // The message loop<br />
   while(GetMessage(&msg, 0, 0, 0) == TRUE)   // Get any messages<br />
   {<br />
      TranslateMessage(&msg);                 // Translate the message<br />
      DispatchMessage(&msg);                  // Dispatch the message<br />
   }<br />
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   return msg.wParam;                         // End so return to Windows<br />
}<br />
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<br />
// Listing OFWIN_2<br />
long WINAPI WindowProc(HWND hWnd, UINT message, WPARAM wParam,<br />
                       LPARAM lParam)<br />
{<br />
   HDC hDC;                       // Display context handle<br />
   PAINTSTRUCT PaintSt;           // Structure defining area to be drawn<br />
   RECT aRect;                    // A working rectangle<br />
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   switch(message)                // Process selected messages<br />
   {<br />
      case WM_PAINT:                       // Message is to redraw the window<br />
         hDC = BeginPaint(hWnd, &PaintSt); // Prepare to draw the window<br />
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         // Get upper left and lower right of client area<br />
         GetClientRect(hWnd, &aRect);<br />
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         SetBkMode(hDC, TRANSPARENT);      // Set text background mode<br />
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         // Now draw the text in the window client area<br />
         DrawText(<br />
             hDC,                  // Device context handle<br />
             "But, soft! What light through yonder window breaks?",<br />
             -1,                   // Indicate null terminated string<br />
             &aRect,               // Rectangle in which text is to be drawn<br />
             DT_SINGLELINE|        // Text format - single line<br />
             DT_CENTER|            //             - centered in the line<br />
             DT_VCENTER);          //             - line centered in aRect<br />
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         EndPaint(hWnd, &PaintSt); // Terminate window redraw operation<br />
         return 0;<br />
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      case WM_DESTROY:             // Window is being destroyed<br />
         PostQuitMessage(0);<br />
         return 0;<br />
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      default:             // Any other message - we don't want to know,<br />
                           // so call default message processing<br />
         return DefWindowProc(hWnd, message, wParam, lParam);<br />
   }<br />
}<br />
<br />

<br />
/////////In main class///////////<br />
	CChild *dlg;<br />
	dlg = new CChild();<br />
	dlg->ShowWindow(SW_SHOW);<br />
-----------------------------<br />
IMPLEMENT_DYNAMIC(CChild, CDialog)<br />
CChild::CChild(CWnd* pParent /*=NULL*/)<br />
	: CDialog(CChild::IDD, pParent)<br />
{<br />
	Create(IDD);<br />
}<br />

// generate string of binary bits for one byte

void GenBinaryString( BYTE byte, CString &str )
{
   str = _T( "" );
   const int bytebits = 8;
   BYTE mask = 1 << ( bytebits - 1 );  // set the high order bit
   for( int x = 0; x < bytebits; x++, mask >>= 1 )
   {
       str += ( mask & byte ) ? _T( "1" ) : _T( "0" );
       if( x == 3 )
           str += _T( " " );  // insert a space to separate the nibbles
   }
}