使用SPCom控件向下位机定时发送控制命令，鼠标选择通道，控制命令随之变化，下位机程序接收到不同命令进行相应的动作。这里只是上位机部分。-Use SPCom bit machine down time control to send control commands, the mouse to select channels, control commands change, lower computer program receives a different command for appr