title: How to determine the currently active USB configuration with libusb 0.1
body: <p>How can I find out which USB configuration of a USB device is the current active one? I use libusb 0.1 (Not the newer 1.0 because I need libusb-win32) and there is only a usb_set_configuration() function but no usb_get_configuration(). Maybe the configuration value of the active configuration can be read from some descriptor?</p>