| CSerialPort类定义的消息 | ||
| 消息名称 | 消息号 | 功能说明 |
| WM_COMM_BREAK_DETECTED | WM_USER+1 | 检测到输入中断 |
| WM_COMM_CTS_DETECTED | WM_USER+2 | 检测到CTS（清除发送）信号状态改变 |
| WM_COMM_DSR_DETECTED | WM_USER+3 | 检测到DSR（数据设置准备就绪）信号状态改变 |
| WM_COMM_ERR_DETECTED | WM_USER+4 | 发生线状态错误（包括CE_FRAME,CE_OVERRUN和CE_RXPARITY） |
| WM_COMM_RING_DETECTED | WM_USER+5 | 检测到响钤指示信号 |
| WM_COMM_RLSD_DETECTED | WM_USER+6 | 检测到RLSD（接收线信号）状态改变 |
| WM_COMM_RXCHAR | WM_USER+7 | 接收到一个字符并已放入接收缓冲区 |
| WM_COMM_RXFLAG_DETECTED | WM_USER+8 | 检测到接收到字符（该字符已放入接收缓冲区）事件 |
| WM_COMM_TXEMPTY_DETECTED | WM_USER+9 | 检测到发送缓冲区最后一个字符已经被发送 |
)
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