public void EnumerateHid()
{
lock (_lock)
{
_hidList.Clear();
uint devices = 0u;
int size = Marshal.SizeOf(typeof(RawInputDeviceList));
if (Win32Methods.GetRawInputDeviceList(IntPtr.Zero, ref devices, (uint)size) != 0u)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
IntPtr pRawInputDeviceList = Marshal.AllocHGlobal((int)(size * devices));
try
{
Win32Methods.GetRawInputDeviceList(pRawInputDeviceList, ref devices, (uint)size);
int index = 0;
while (index < devices)
{
RawHidDevice device = GetHid(pRawInputDeviceList, size, index);
if (device != null && !_hidList.ContainsKey(device.Handle))
{
Debug.WriteLine("Added Hid; Handle: {0}, Name: {1}, Type: {2}, Description: {3}", (uint)device.Handle, device.Name, device.Type, device.Description);
_hidList.Add(device.Handle, device);
}
index++;
}
}
finally
{
Marshal.FreeHGlobal(pRawInputDeviceList);
}
NumberOfHid = _hidList.Count;
}
}
internal RawInputHidEventArgs(RawHidDevice device, uint sizeHid, uint count, byte[] rawData)
{
Device = device;
SizeHid = sizeHid;
Count = count;
RawData = new byte[sizeHid * count];
for (int i = 0; i < sizeHid * count; i++)
{
RawData[i] = rawData[i];
}
}
