protected override bool TryCreateHidDevice(object key, out Device device)
{
var path = (HidDevicePath)key;
device = WinHidDevice.TryCreate(path.DevicePath, path.DeviceID);
return(device != null);
}
internal static WinHidDevice TryCreate(string path, string id)
{
var d = new WinHidDevice()
{
_path = path, _id = id
};
return(d.TryOpenToGetInfo(handle =>
{
NativeMethods.HIDD_ATTRIBUTES attributes = new NativeMethods.HIDD_ATTRIBUTES();
attributes.Size = Marshal.SizeOf(attributes);
if (!NativeMethods.HidD_GetAttributes(handle, ref attributes))
{
return false;
}
// Get VID, PID, version.
d._pid = attributes.ProductID;
d._vid = attributes.VendorID;
d._version = attributes.VersionNumber;
return true;
}) ? d : null);
}
internal WinHidStream(WinHidDevice device)
: base(device)
{
_closeEventHandle = NativeMethods.CreateManualResetEventOrThrow();
}
