public KeyControlEventArgs( DeviceInfo dInfo, DeviceType device )
{
m_deviceInfo = dInfo;
m_device = device;
}
/// <summary>
/// Iterates through the list provided by GetRawInputDeviceList,
/// counting keyboard devices and adding them to deviceList.
/// </summary>
/// <returns>The number of keyboard devices found.</returns>
public int EnumerateDevices()
{
int NumberOfDevices = 0;
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);
// Iterate through the list, discarding undesired items
// and retrieving further information on keyboard devices
for (int i = 0; i < deviceCount; i++)
{
DeviceInfo dInfo;
string deviceName;
uint pcbSize = 0;
RAWINPUTDEVICELIST rid = (RAWINPUTDEVICELIST)Marshal.PtrToStructure(
new IntPtr((pRawInputDeviceList.ToInt32() + (dwSize * i))),
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 = (string)Marshal.PtrToStringAnsi(pData);
// Drop the "root" keyboard and mouse devices used for Terminal
// Services and the Remote Desktop
if (deviceName.ToUpper().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
if (rid.dwType == RIM_TYPEKEYBOARD || rid.dwType == RIM_TYPEHID)
{
dInfo = new DeviceInfo();
dInfo.deviceName = (string)Marshal.PtrToStringAnsi(pData);
dInfo.deviceHandle = rid.hDevice;
dInfo.deviceType = GetDeviceType(rid.dwType);
// Check the Registry to see whether this is actually a
// keyboard, and to retrieve a more friendly description.
bool IsKeyboardDevice = false;
string DeviceDesc = ReadReg(deviceName, ref IsKeyboardDevice);
dInfo.Name = DeviceDesc;
// If it is a keyboard and it isn't already in the list,
// add it to the deviceList hashtable and increase the
// NumberOfDevices count
if (!deviceList.Contains(rid.hDevice) && IsKeyboardDevice)
{
NumberOfDevices++;
deviceList.Add(rid.hDevice, dInfo);
}
}
Marshal.FreeHGlobal(pData);
}
}
Marshal.FreeHGlobal(pRawInputDeviceList);
return NumberOfDevices;
}
else
{
throw new ApplicationException( "An error occurred while retrieving the list of devices." );
}
}
public static void DeviceAudit()
{
var file = new FileStream("DeviceAudit.txt", FileMode.Create, FileAccess.Write);
var sw = new StreamWriter(file);
var keyboardNumber = 0;
uint deviceCount = 0;
var dwSize = (Marshal.SizeOf(typeof(Rawinputdevicelist)));
if (GetRawInputDeviceList(IntPtr.Zero, ref deviceCount, (uint)dwSize) == 0)
{
var pRawInputDeviceList = Marshal.AllocHGlobal((int)(dwSize * deviceCount));
GetRawInputDeviceList(pRawInputDeviceList, ref deviceCount, (uint)dwSize);
for (var i = 0; i < deviceCount; i++)
{
uint pcbSize = 0;
// On Window 8 64bit when compiling against .Net > 3.5 using .ToInt32 you will generate an arithmetic overflow. Leave as it is for 32bit/64bit applications
var rid = (Rawinputdevicelist)Marshal.PtrToStructure(new IntPtr((pRawInputDeviceList.ToInt64() + (dwSize * i))), typeof(Rawinputdevicelist));
GetRawInputDeviceInfo(rid.hDevice, RawInputDeviceInfo.RIDI_DEVICENAME, IntPtr.Zero, ref pcbSize);
if (pcbSize <= 0)
{
sw.WriteLine("pcbSize: " + pcbSize);
sw.WriteLine(Marshal.GetLastWin32Error());
return;
}
var size = (uint)Marshal.SizeOf(typeof(DeviceInfo));
var di = new DeviceInfo {Size = Marshal.SizeOf(typeof (DeviceInfo))};
if (GetRawInputDeviceInfo(rid.hDevice, (uint) RawInputDeviceInfo.RIDI_DEVICEINFO, ref di, ref size) <= 0)
{
sw.WriteLine(Marshal.GetLastWin32Error());
return;
}
var pData = Marshal.AllocHGlobal((int)pcbSize);
GetRawInputDeviceInfo(rid.hDevice, RawInputDeviceInfo.RIDI_DEVICENAME, pData, ref pcbSize);
var deviceName = Marshal.PtrToStringAnsi(pData);
if (rid.dwType == DeviceType.RimTypekeyboard || rid.dwType == DeviceType.RimTypeHid)
{
var deviceDesc = GetDeviceDescription(deviceName);
var dInfo = new KeyPressEvent
{
DeviceName = Marshal.PtrToStringAnsi(pData),
DeviceHandle = rid.hDevice,
DeviceType = GetDeviceType(rid.dwType),
Name = deviceDesc,
Source = keyboardNumber++.ToString(CultureInfo.InvariantCulture)
};
sw.WriteLine(dInfo.ToString());
sw.WriteLine(di.ToString());
sw.WriteLine(di.KeyboardInfo.ToString());
sw.WriteLine(di.HIDInfo.ToString());
//sw.WriteLine(di.MouseInfo.ToString());
sw.WriteLine("=========================================================================================================");
}
Marshal.FreeHGlobal(pData);
}
Marshal.FreeHGlobal(pRawInputDeviceList);
sw.Flush();
sw.Close();
file.Close();
return;
}
throw new Win32Exception(Marshal.GetLastWin32Error());
}
private static extern uint GetRawInputDeviceInfo(IntPtr hDevice, uint command, ref DeviceInfo data, ref uint dataSize);
public RawKeyEventArgs(DeviceInfo dInfo, Keys vKey, string keyName)
{
this.device = dInfo;
this.vKey = vKey;
this.keyName = keyName;
}
/// <summary>Iterates through the list provided by GetRawInputDeviceList,
/// adding eligible devices to deviceList.
/// </summary>
/// <param name="deviceFilter">device type filter - when present, only process messages from devices of this type</param>
/// <returns>The number of keyboard devices found.</returns>
private static void EnumerateDevices(DeviceType?deviceFilter, out Dictionary <IntPtr, DeviceInfo> deviceList)
{
deviceList = new Dictionary <IntPtr, DeviceInfo>();
uint deviceCount = 0;
// Get the number of raw input devices in the list,
// then allocate sufficient memory and get the entire list
int dwSize = (Marshal.SizeOf(typeof(RAWINPUTDEVICELIST)));
if (GetRawInputDeviceList(IntPtr.Zero, ref deviceCount, (uint)dwSize) == 0)
{
IntPtr pRawInputDeviceList = Marshal.AllocHGlobal((int)(dwSize * deviceCount));
GetRawInputDeviceList(pRawInputDeviceList, ref deviceCount, (uint)dwSize);
// Iterate through the list, discarding undesired items
// and retrieving further information on keyboard devices
for (int i = 0; i < deviceCount; i++)
{
RAWINPUTDEVICELIST rid = (RAWINPUTDEVICELIST)Marshal.PtrToStructure(
new IntPtr((pRawInputDeviceList.ToInt32() + (dwSize * i))),
typeof(RAWINPUTDEVICELIST));
uint pcbSize = 0;
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 deviceDescriptor = (string)Marshal.PtrToStringAnsi(pData);
// Drop the "root" keyboard and mouse devices used for Terminal
// Services and the Remote Desktop
if (deviceDescriptor.ToUpper().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
if (rid.dwType == RIM_TYPEKEYBOARD || rid.dwType == RIM_TYPEHID)
{
DeviceInfo dInfo = new DeviceInfo();
dInfo.Handle = rid.hDevice;
dInfo.Descriptor = deviceDescriptor;
dInfo.DType = GetDeviceType(rid.dwType, deviceDescriptor);
// Check the Registry to see whether this is actually a
// keyboard, and to retrieve a more friendly description.
string deviceDesc;
string deviceClass;
bool isKeyboardDevice;
ReadReg(deviceDescriptor, out deviceDesc, out deviceClass, out isKeyboardDevice);
dInfo.Name = deviceDesc;
// If it is a keyboard and it isn't already in the list
// and matches the device type filter, if provided, then
// add it to the deviceList.
if (isKeyboardDevice && !deviceList.ContainsKey(rid.hDevice))
{
if (deviceFilter == null || deviceFilter.Value == dInfo.DType)
{
deviceList.Add(dInfo.Handle, dInfo);
}
}
}
Marshal.FreeHGlobal(pData);
}
}
Marshal.FreeHGlobal(pRawInputDeviceList);
}
else
{
throw new ApplicationException("An error occurred while retrieving the list of devices.");
}
}
