public PrinterConnEventArgs(string com_port, VID_PID vid_pid)
{
this.com_port = com_port;
this.vid_pid = vid_pid;
}
public PrinterConnEventArgs(PrinterConnection printer, string com_port, VID_PID vid_pid)
{
this.printer = printer;
this.com_port = com_port;
this.vid_pid = vid_pid;
}
public PrinterTypeData(VID_PID vid_pid)
{
this.vid_pid = vid_pid;
}