RS232----cvi

代码说明：

基于Labwindows --CVI平台的RS232测试程序，This example illustrates the use of the RS232 Library"s InstallComCallback      *//*          function to respond to the LWRS_RXFLAG event. The user will be asked to enter   *//*          an event character. Whenever this event character is detected on the COM port,  *//*          a callback function will be executed.                                           *//* Notes:   To run this example you need to do a Loopback Test, i.e. connect pin 2 to       *//*          pin 3 on the serial port.