USB通信的一个程序，QT开发，用于USB光纤通信的，可以参考看看，-USB communication of a program, QT development for USB optical communications, can refer to see

windows平台下，libusb-win32库的使用。以及在Qt编译环境下的HID通信(how libusb-win32 is used in Qt. HID with libusb-win32)

QT通过hidapi库建立usb通信，可以自动查询到VID和PID(USB communication is set up through the hidapi library, and the compiling methods under the three platforms of three kinds of Windows, Linux and MacOS are introduced.)