int main(int argc, char ** argv)
{
    struct xGui * wnd, * btn;
    wnd = xGui_New(-1, -1, 600, 400, "Window Title");
    btn = xGui_Add_Butn(GBox_PHP, 50, 50, 80, 40, _T("Button A"));
    //Butn_On_Click(btn, Butn_A_On_Click);

    return xGui_Msg_Loop();
}