vb的打印，调用打印函数，先测试打印机向串口发数据，将字符串转为十六进制表示的字符串，从接收缓冲区读取数据，关闭串口事件响应-vb print, call the print function, send the first test the printer to the serial data string to hexadecimal string from the receive buffer read data off the serial port incident response

循环buffer。数据写进循环缓存区，模拟数据被取走，打印出来为空。-Loop buffer. Data included in the loop cache, simulation data is removed, print out blank.

打印缓冲池小程序 用C++写的 希望对大家有所帮助 适合初学者-Print buffer pool small program in C++ to write we want to help for beginners