public static List<DeviceDetails> EnumerateDevices()
{
uint deviceCount = 0;
int dwSize = Marshal.SizeOf(typeof (RAWINPUTDEVICELIST));
// Get the number of raw input devices in the list,
// then allocate sufficient memory and get the entire list
if (GetRawInputDeviceList(IntPtr.Zero, ref deviceCount, (uint) dwSize) == 0)
{
IntPtr pRawInputDeviceList = Marshal.AllocHGlobal((int) (dwSize*deviceCount));
GetRawInputDeviceList(pRawInputDeviceList, ref deviceCount, (uint) dwSize);
List<DeviceDetails> devices = new List<DeviceDetails>((int) deviceCount);
// Iterate through the list, discarding undesired items
// and retrieving further information on keyboard devices
for (int i = 0; i < deviceCount; i++)
{
uint pcbSize = 0;
IntPtr location;
int offset = dwSize*i;
if (IntPtr.Size == 4)
location = new IntPtr(pRawInputDeviceList.ToInt32() + offset);
else
location = new IntPtr(pRawInputDeviceList.ToInt64() + offset);
RAWINPUTDEVICELIST rid = (RAWINPUTDEVICELIST) Marshal.PtrToStructure(location, typeof (RAWINPUTDEVICELIST));
GetRawInputDeviceInfo(rid.hDevice, RIDI_DEVICENAME, IntPtr.Zero, ref pcbSize);
if (pcbSize > 0)
{
IntPtr pData = Marshal.AllocHGlobal((int) pcbSize);
GetRawInputDeviceInfo(rid.hDevice, RIDI_DEVICENAME, pData, ref pcbSize);
string deviceName = Marshal.PtrToStringAnsi(pData);
// Drop the "root" keyboard and mouse devices used for Terminal Services and the Remote Desktop
if (deviceName.ToUpperInvariant().Contains("ROOT"))
continue;
// If the device is identified in the list as a keyboard or
// HID device, create a DeviceInfo object to store information
// about it
// Get Detailed Info ...
uint size = (uint) Marshal.SizeOf(typeof (DeviceInfo));
DeviceInfo di = new DeviceInfo();
di.Size = Marshal.SizeOf(typeof (DeviceInfo));
GetRawInputDeviceInfo(rid.hDevice, RIDI_DEVICEINFO, ref di, ref size);
di = new DeviceInfo();
di.Size = Marshal.SizeOf(typeof (DeviceInfo));
GetRawInputDeviceInfo(rid.hDevice, RIDI_DEVICEINFO, ref di, ref size);
DeviceDetails details = new DeviceDetails();
//details.Name = deviceName;
details.ID = deviceName;
switch (di.Type)
{
case RawInputType.HID:
{
string vidAndPid = String.Format("Vid_{0:x4}&Pid_{1:x4}", di.HIDInfo.VendorID, di.HIDInfo.ProductID);
details.Name = String.Format("HID: {0}", GetFriendlyName(vidAndPid));
//details.ID = GetDeviceDesc(deviceName);
details.UsagePage = di.HIDInfo.UsagePage;
details.Usage = di.HIDInfo.Usage;
devices.Add(details);
break;
}
case RawInputType.Keyboard:
{
details.Name = "HID Keyboard";
//details.ID = String.Format("{0}-{1}", di.KeyboardInfo.Type, di.KeyboardInfo.SubType);
details.UsagePage = 0x01;
details.Usage = 0x06;
devices.Add(details);
break;
}
case RawInputType.Mouse:
{
details.Name = "HID Mouse";
details.UsagePage = 0x01;
details.Usage = 0x02;
devices.Add(details);
break;
}
}
Marshal.FreeHGlobal(pData);
}
}
Marshal.FreeHGlobal(pRawInputDeviceList);
return devices;
}
else
{
throw new InvalidOperationException("An error occurred while retrieving the list of devices");
}
}
public static List <DeviceDetails> EnumerateDevices()
{
uint deviceCount = 0;
int dwSize = Marshal.SizeOf(typeof(RAWINPUTDEVICELIST));
// Get the number of raw input devices in the list,
// then allocate sufficient memory and get the entire list
if (GetRawInputDeviceList(IntPtr.Zero, ref deviceCount, (uint)dwSize) == 0)
{
IntPtr pRawInputDeviceList = Marshal.AllocHGlobal((int)(dwSize * deviceCount));
GetRawInputDeviceList(pRawInputDeviceList, ref deviceCount, (uint)dwSize);
List <DeviceDetails> devices = new List <DeviceDetails>((int)deviceCount);
// Iterate through the list, discarding undesired items
// and retrieving further information on keyboard devices
for (int i = 0; i < deviceCount; i++)
{
string deviceName;
uint pcbSize = 0;
RAWINPUTDEVICELIST rid;
IntPtr location;
int offset = dwSize * i;
if (IntPtr.Size == 4)
{
location = new IntPtr(pRawInputDeviceList.ToInt32() + offset);
}
else
{
location = new IntPtr(pRawInputDeviceList.ToInt64() + offset);
}
rid = (RAWINPUTDEVICELIST)Marshal.PtrToStructure(location, typeof(RAWINPUTDEVICELIST));
GetRawInputDeviceInfo(rid.hDevice, RIDI_DEVICENAME, IntPtr.Zero, ref pcbSize);
if (pcbSize > 0)
{
IntPtr pData = Marshal.AllocHGlobal((int)pcbSize);
GetRawInputDeviceInfo(rid.hDevice, RIDI_DEVICENAME, pData, ref pcbSize);
deviceName = Marshal.PtrToStringAnsi(pData);
// Drop the "root" keyboard and mouse devices used for Terminal Services and the Remote Desktop
if (deviceName.ToUpperInvariant().Contains("ROOT"))
{
continue;
}
// If the device is identified in the list as a keyboard or
// HID device, create a DeviceInfo object to store information
// about it
// Get Detailed Info ...
uint size = (uint)Marshal.SizeOf(typeof(DeviceInfo));
DeviceInfo di = new DeviceInfo();
di.Size = Marshal.SizeOf(typeof(DeviceInfo));
GetRawInputDeviceInfo(rid.hDevice, RIDI_DEVICEINFO, ref di, ref size);
di = new DeviceInfo();
di.Size = Marshal.SizeOf(typeof(DeviceInfo));
GetRawInputDeviceInfo(rid.hDevice, RIDI_DEVICEINFO, ref di, ref size);
DeviceDetails details = new DeviceDetails();
//details.Name = deviceName;
details.ID = deviceName;
switch (di.Type)
{
case RawInputType.HID:
{
string vidAndPid = String.Format("Vid_{0:x4}&Pid_{1:x4}", di.HIDInfo.VendorID, di.HIDInfo.ProductID);
details.Name = String.Format("HID: {0}", GetFriendlyName(vidAndPid));
//details.ID = GetDeviceDesc(deviceName);
details.UsagePage = di.HIDInfo.UsagePage;
details.Usage = di.HIDInfo.Usage;
devices.Add(details);
break;
}
case RawInputType.Keyboard:
{
details.Name = "HID Keyboard";
//details.ID = String.Format("{0}-{1}", di.KeyboardInfo.Type, di.KeyboardInfo.SubType);
details.UsagePage = 0x01;
details.Usage = 0x06;
devices.Add(details);
break;
}
case RawInputType.Mouse:
{
details.Name = "HID Mouse";
details.UsagePage = 0x01;
details.Usage = 0x02;
devices.Add(details);
break;
}
}
Marshal.FreeHGlobal(pData);
}
}
Marshal.FreeHGlobal(pRawInputDeviceList);
return(devices);
}
else
{
throw new InvalidOperationException("An error occurred while retrieving the list of devices");
}
}