@msdn=http://search.microsoft.com/search/results.aspx?qu=$$$ @pinvoke=http://pinvoke.net/$$$.htm Summary: Function to read raw data from an input device such as a keyboard, mouse or other HID. !!!!C# Signature: /// <summary> /// Function to retrieve raw input data. /// </summary> /// <param name="hRawInput">Handle to the raw input.</param> /// <param name="uiCommand">Command to issue when retrieving data.</param> /// <param name="pData">Raw input data.</param> /// <param name="pcbSize">Number of bytes in the array.</param> /// <param name="cbSizeHeader">Size of the header.</param> /// <returns>0 if successful if pData is null, otherwise number of bytes if pData is not null.</returns> [DllImport("user32.dll")] public static extern int GetRawInputData(IntPtr hRawInput, RawInputCommand uiCommand, out RAWINPUT pData, ref int pcbSize, int cbSizeHeader); or /// <summary> /// Function to retrieve raw input data. /// </summary> /// <param name="hRawInput">Handle to the raw input.</param> /// <param name="uiCommand">Command to issue when retrieving data.</param> /// <param name="pData">Raw input data.</param> /// <param name="pcbSize">Number of bytes in the array.</param> /// <param name="cbSizeHeader">Size of the header.</param> /// <returns>0 if successful if pData is null, otherwise number of bytes if pData is not null.</returns> [DllImport("user32.dll")] public static extern int GetRawInputData(IntPtr hRawInput, RawInputCommand uiCommand, byte[] pData, ref int pcbSize, int cbSizeHeader); !!!!VB.NET Signature: <DllImport("user32.dll", CharSet:=CharSet.Auto, EntryPoint:="GetRawInputData", SetLastError:=True)> Function GetRawInputData(hRawInput As IntPtr, uiCommand As UInteger, ByRef pData As IntPtr, ByRef pcbSize As IntPtr, cbSizeHeader As UInteger) End Function !!!!Alternative Managed API: Do you know one? Please contribute it! !!!!Notes: The VirtualKeys (they're just mapped to the VK_* constants) and WindowsMessages enumeration have been omitted as it's quite lengthy. RAWINPUT is incompatible with x64. See RAWINPUTHEADER.Device and RAWINPUTHEADER.wParam. !!!!Tips & Tricks: Please add some! !!!!Sample Code: protected override void WndProc(ref Message m) { if (m.Msg == (int)WindowMessages.RawInput) // WindowMessages.RawInput = 0x00FF (WM_INPUT) { RAWINPUT input = new RAWINPUT(); int outSize = 0; int size = Marshal.SizeOf(typeof(RAWINPUT)); outSize = Win32API.GetRawInputData(m.LParam, RawInputCommand.Input, out input, ref size, Marshal.SizeOf(typeof(RAWINPUTHEADER))); if (outSize != -1) { if (input.Header.Type == RawInputType.Mouse) { p.X += input.Mouse.LastX; p.Y += input.Mouse.LastY; label1.Text = "Mouse: " + p.X.ToString() + "x" + p.Y.ToString() + " " + input.Mouse.ButtonFlags.ToString(); } } } base.WndProc(ref m); } Documentation: GetRawInputData@msdn on MSDN
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