请教如何创建父窗口无标题栏，无按钮框

请教下各位，使用此函数想创建没有标题框，没有按钮框，完全透明的窗口，如何做？i_style我已经试过很多宏了。都不行。   p_event->hwnd =
        CreateWindowEx( WS_EX_NOPARENTNOTIFY | i_stylex,
                    p_event->class_main,             /* name of window class */
                    _T(VOUT_TITLE) _T(" (DirectX Output 1)"),  /* window title */
                    i_style,                                 /* window style */
                    (!p_event->wnd_cfg.x) ? CW_USEDEFAULT :
                        (UINT)p_event->wnd_cfg.x,   /* default X coordinate */
                    (!p_event->wnd_cfg.y) ? CW_USEDEFAULT :
                        (UINT)p_event->wnd_cfg.y,   /* default Y coordinate */
                    rect_window.right - rect_window.left,    /* window width */
                    rect_window.bottom - rect_window.top,   /* window height */
                    p_event->hparent,                       /* parent window */
                    NULL,                          /* no menu in this window */
                    hInstance,            /* handle of this program instance */
                    (LPVOID)p_event );           /* send vd to WM_CREATE */