Creating a virtual HID device

I'd like to create a virtual HID device (emulate it with a driver).

It must be visible to clients that implement standard HID detection:

• Call HidD_GetHidGuid() – Get the HID device class GUID
• Call SetupDiGetClassDevs() – Get a handle to a set of devices which implement the HID interface
• Call SetupDiEnumDeviceInterfaces() – For each device in the returned set of devices, obtain the interface information for all exposed HID interfaces.
• Call SetupDiGetDeviceInterfaceDetail() – For each interface obtained in the previous call, get the detailed information block for that interface. This detailed information includes the string that can be passed to CreateFile() to open a handle to the device
• Call SetupDiDestroyDeviceInfoList() – Free up the device information set that was obtained in the call to SetupDiGetClassDevs().

The device should also support reading, so CreateFile / ReadFile wou开发者_如何学Gold return data supplied by me from the driver.

I don't really know where to begin, as I don't have a lot of exp. in kernel dev. :(

Some people have had luck with the vmulti project as a base http://code.google.com/p/vmulti/

You sholud write a driver, then use DevCon (Device Console Tool) with install option.

cmdInstall:

A variation of cmdUpdate to install a driver when there is no associated hardware. It creates a new root-enumerated device instance and associates it with a made up hardware ID specified on the command line (which should correspond to a hardware ID in the INF). This cannot be done on a remote machine or in the context of Wow64.

http://code.msdn.microsoft.com/windowshardware/DevCon-Sample-4e95d71c

http://msdn.microsoft.com/en-us/library/windows/hardware/ff544707%28v=vs.85%29.aspx

http://msdn.microsoft.com/en-us/library/windows/hardware/ff544780%28v=vs.85%29.aspx

see the vhidmini ddk sample driver. It was in the version 1830 DDK but is not in the latest version. alternatively the hidfake sample in Oney's book.

See http://www.microsoft.com/mspress/books/sampchap/6262.aspx