public static IDictionary<IntPtr, RawKeyboardDevice> GetDevices()
{
var deviceList = new Dictionary<IntPtr, RawKeyboardDevice>();
var rawKeyboardDevice = new RawKeyboardDevice("Global Keyboard", RawDeviceType.Keyboard, IntPtr.Zero,
"Fake Keyboard. Some keys (ZOOM, MUTE, VOLUMEUP, VOLUMEDOWN) are sent to rawinput with a handle of zero.");
deviceList.Add(rawKeyboardDevice.Handle, rawKeyboardDevice);
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)
{
RawKeyboardDevice device = GetDevice(pRawInputDeviceList, size, index);
if (device != null && !deviceList.ContainsKey(device.Handle))
{
deviceList.Add(device.Handle, device);
}
index++;
}
}
finally
{
Marshal.FreeHGlobal(pRawInputDeviceList);
}
return deviceList;
}
internal RawInputEventArgs(RawKeyboardDevice device, KeyPressState keyPressState, uint message, Key key,
int virtualKey)
{
Device = device;
KeyPressState = keyPressState;
Message = message;
Key = key;
VirtualKey = virtualKey;
}
internal RawInputEventArgs(RawKeyboardDevice device, KeyPressState keyPressState, uint message, Key key,
int virtualKey)
{
Device = device;
KeyPressState = keyPressState;
Message = message;
Key = key;
VirtualKey = virtualKey;
}
public void EnumerateDevices()
{
lock (_lock)
{
_deviceList.Clear();
var rawKeyboardDevice = new RawKeyboardDevice("Global Keyboard", RawDeviceType.Keyboard, IntPtr.Zero,
"Fake Keyboard. Some keys (ZOOM, MUTE, VOLUMEUP, VOLUMEDOWN) are sent to rawinput with a handle of zero.");
_deviceList.Add(rawKeyboardDevice.Handle, rawKeyboardDevice);
var devices = 0u;
var size = Marshal.SizeOf(typeof(RawInputDeviceList));
if (Win32Methods.GetRawInputDeviceList(IntPtr.Zero, ref devices, (uint)size) != 0u)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
var pRawInputDeviceList = Marshal.AllocHGlobal((int)(size * devices));
try
{
Win32Methods.GetRawInputDeviceList(pRawInputDeviceList, ref devices, (uint)size);
var index = 0;
while (index < devices)
{
var device = GetDevice(pRawInputDeviceList, size, index);
if (device != null && !_deviceList.ContainsKey(device.Handle))
{
_deviceList.Add(device.Handle, device);
}
index++;
}
}
finally
{
Marshal.FreeHGlobal(pRawInputDeviceList);
}
NumberOfKeyboards = _deviceList.Count;
}
}
public void EnumerateDevices()
{
lock (_lock)
{
_deviceList.Clear();
var rawKeyboardDevice = new RawKeyboardDevice("Global Keyboard", RawDeviceType.Keyboard, IntPtr.Zero,
"Fake Keyboard. Some keys (ZOOM, MUTE, VOLUMEUP, VOLUMEDOWN) are sent to rawinput with a handle of zero.");
_deviceList.Add(rawKeyboardDevice.Handle, rawKeyboardDevice);
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)
{
RawKeyboardDevice device = GetDevice(pRawInputDeviceList, size, index);
if (device != null && !_deviceList.ContainsKey(device.Handle))
{
_deviceList.Add(device.Handle, device);
}
index++;
}
}
finally
{
Marshal.FreeHGlobal(pRawInputDeviceList);
}
NumberOfKeyboards = _deviceList.Count;
}
}
