Вопросы по RichEdit WinApi

static HINSTANCE hLibrary = LoadLibrary("riched32.dll");

switch (message)
    {
    case WM_CREATE:
        hLBox1 = CreateWindowEx(0L, "RichEdit", NULL,
            WS_CHILD | WS_VISIBLE | ES_SAVESEL |
            ES_MULTILINE | WS_VSCROLL |
            LBS_MULTIPLESEL | ES_SUNKEN |
            ES_AUTOVSCROLL | ES_READONLY,
             1, 55, 470, 635,
             hWnd, (HMENU)ID_LBOX1,
             hInst, NULL);
        break;
           ........................
    case WM_DESTROY:
        FreeLibrary(hLibrary);
        PostQuitMessage(0);
        break;
    default:  
        return DefWindowProc(hWnd, message, wParam, lParam);
    }

Unhandled exception at 0x74e10b09 in Test.exe: 0xC0000005: Access violation reading location 0x74e10b09.