C / C++ / MFC

BOOL COneT32App::InitInstance()
{
   // Register your unique class name that you wish to use
    WNDCLASS wndcls;

    memset(&wndcls, 0, sizeof(WNDCLASS));   // start with NULL
                                            // defaults

    wndcls.style = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW;

    //you can specify your own window procedure
    wndcls.lpfnWndProc = ::DefWindowProc; 
    wndcls.hInstance = AfxGetInstanceHandle();
    wndcls.hIcon = LoadIcon(IDR_MAINFRAME); // or load a different icon
    wndcls.hCursor = LoadCursor( IDC_ARROW );
    wndcls.hbrBackground = (HBRUSH) (COLOR_WINDOW + 1);
    wndcls.lpszMenuName = NULL;

    // Specify your own class name for using FindWindow later
    wndcls.lpszClassName = _T("MyNewClass");

    // Register the new class and exit if it fails
    if(!AfxRegisterClass(&wndcls))
    {
       TRACE("Class Registration Failed\n");
       return FALSE;
    }

..