Check PID/VID of a USB Pen/Thumb Drive

Question

Hi, I would like to read the PID and VID of the USB Pen Drive without using the NI VISA development wizard. This is because, when the pen drive plug in, the windows will automatic detect the windows inf file and install the driver for the pen drive. Is there any way to read and detect the PID/VID of the pen drive such as query the windows registry or call API of the Windows Device Manager?
Please kindly help! Thanks a lot!

Answer 1

Unfortunately there is no easy-drive API functions, which can acuire USB device information so easily. Instead, you must use Configuration Manager API, which is declared and implemented in SETUPAPI.H/DLL.  Probably it will be very hard to call them from LabVIEW.  Then you must use
SetupDiGetClassDevs() - retrieve HDEVINFO handle from the GUID, which is associated with your device or hosted device driver.
SetupDiEnumDeviceInterface() - enumerate active USB devices from the above-acquired HDEVINFO resulting SP_INTERFACE_DEVICE_DATA
SetupDiGetInterfaceDeviceDetail() - acquire detail info from SP_INTERFACE_DEVICE_DATA resulting SP_DEVINFO_DATA
SetupDiGetDeviceInstanceId() - acquire the "device path name" from SP_DEVINFO_DATA, resulting a NULL-terminated string, which will include the USB VID/PID values in hex-format, such as including "USB\VID_xxxx&PID_xxxx\..." string. 
You can loop above API calls for each enumeration, until the destinate VID and PID are found.