rt

解决方案 »

  1.   

    handle: Thandle
    handle := CreateFile( PChar('com1'),
                                     GENERIC_READ or GENERIC_WRITE,
                                     0, 
                                     nil,   OPEN_EXISTING,
                                     FILE_ATTRIBUTE_NORMAL or FILE_FLAG_OVERLAPPED,
                                     0  );
      

  2.   

    菜单help->windows sdk
    msdn就更好了
      

  3.   

    建议你下一个spcomm组件,它的源代码写的很好,还是多线程,研究明白你就全懂了