RawInput.cs
changeset 79 cdc5f8f1b79e
parent 78 72885c950813
child 80 e2acfa51664f
     1.1 --- a/RawInput.cs	Sun Mar 15 16:56:31 2015 +0100
     1.2 +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.3 @@ -1,250 +0,0 @@
     1.4 -//
     1.5 -// Copyright (C) 2014-2015 Stéphane Lenclud.
     1.6 -//
     1.7 -// This file is part of SharpLibHid.
     1.8 -//
     1.9 -// SharpDisplayManager is free software: you can redistribute it and/or modify
    1.10 -// it under the terms of the GNU General Public License as published by
    1.11 -// the Free Software Foundation, either version 3 of the License, or
    1.12 -// (at your option) any later version.
    1.13 -//
    1.14 -// SharpDisplayManager is distributed in the hope that it will be useful,
    1.15 -// but WITHOUT ANY WARRANTY; without even the implied warranty of
    1.16 -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    1.17 -// GNU General Public License for more details.
    1.18 -//
    1.19 -// You should have received a copy of the GNU General Public License
    1.20 -// along with SharpDisplayManager.  If not, see <http://www.gnu.org/licenses/>.
    1.21 -//
    1.22 -
    1.23 -using System;
    1.24 -using System.Runtime.InteropServices;
    1.25 -using System.Diagnostics;
    1.26 -using System.Windows.Forms;
    1.27 -
    1.28 -namespace SharpLib.Win32
    1.29 -{
    1.30 -    /// <summary>
    1.31 -    /// Provide some utility functions for raw input handling.
    1.32 -    /// </summary>
    1.33 -    static public class RawInput
    1.34 -    {
    1.35 -        /// <summary>
    1.36 -        /// 
    1.37 -        /// </summary>
    1.38 -        /// <param name="aRawInputHandle"></param>
    1.39 -        /// <param name="aRawInput"></param>
    1.40 -        /// <param name="rawInputBuffer">Caller must free up memory on the pointer using Marshal.FreeHGlobal</param>
    1.41 -        /// <returns></returns>
    1.42 -        public static bool GetRawInputData(IntPtr aRawInputHandle, ref RAWINPUT aRawInput, ref IntPtr rawInputBuffer)
    1.43 -        {
    1.44 -            bool success = true;
    1.45 -            rawInputBuffer = IntPtr.Zero;
    1.46 -
    1.47 -            try
    1.48 -            {
    1.49 -                uint dwSize = 0;
    1.50 -                uint sizeOfHeader = (uint)Marshal.SizeOf(typeof(RAWINPUTHEADER));
    1.51 -
    1.52 -                //Get the size of our raw input data.
    1.53 -                Win32.Function.GetRawInputData(aRawInputHandle, Const.RID_INPUT, IntPtr.Zero, ref dwSize, sizeOfHeader);
    1.54 -
    1.55 -                //Allocate a large enough buffer
    1.56 -                 rawInputBuffer = Marshal.AllocHGlobal((int)dwSize);
    1.57 -
    1.58 -                //Now read our RAWINPUT data
    1.59 -                if (Win32.Function.GetRawInputData(aRawInputHandle, Const.RID_INPUT, rawInputBuffer, ref dwSize, (uint)Marshal.SizeOf(typeof(RAWINPUTHEADER))) != dwSize)
    1.60 -                {
    1.61 -                    return false;
    1.62 -                }
    1.63 -
    1.64 -                //Cast our buffer
    1.65 -                aRawInput = (RAWINPUT)Marshal.PtrToStructure(rawInputBuffer, typeof(RAWINPUT));
    1.66 -            }
    1.67 -            catch
    1.68 -            {
    1.69 -                Debug.WriteLine("GetRawInputData failed!");
    1.70 -                success = false;
    1.71 -            }
    1.72 -
    1.73 -            return success;
    1.74 -        }
    1.75 -
    1.76 -        /// <summary>
    1.77 -        /// 
    1.78 -        /// </summary>
    1.79 -        /// <param name="hDevice"></param>
    1.80 -        /// <param name="deviceInfo"></param>
    1.81 -        /// <returns></returns>
    1.82 -        public static bool GetDeviceInfo(IntPtr hDevice, ref RID_DEVICE_INFO deviceInfo)
    1.83 -        {
    1.84 -            bool success = true;
    1.85 -            IntPtr deviceInfoBuffer = IntPtr.Zero;
    1.86 -            try
    1.87 -            {
    1.88 -                //Get Device Info
    1.89 -                uint deviceInfoSize = (uint)Marshal.SizeOf(typeof(RID_DEVICE_INFO));
    1.90 -                deviceInfoBuffer = Marshal.AllocHGlobal((int)deviceInfoSize);
    1.91 -
    1.92 -                int res = Win32.Function.GetRawInputDeviceInfo(hDevice, Win32.RawInputDeviceInfoType.RIDI_DEVICEINFO, deviceInfoBuffer, ref deviceInfoSize);
    1.93 -                if (res <= 0)
    1.94 -                {
    1.95 -                    Debug.WriteLine("WM_INPUT could not read device info: " + Marshal.GetLastWin32Error().ToString());
    1.96 -                    return false;
    1.97 -                }
    1.98 -
    1.99 -                //Cast our buffer
   1.100 -                deviceInfo = (RID_DEVICE_INFO)Marshal.PtrToStructure(deviceInfoBuffer, typeof(RID_DEVICE_INFO));
   1.101 -            }
   1.102 -            catch
   1.103 -            {
   1.104 -                Debug.WriteLine("GetRawInputData failed!");
   1.105 -                success = false;
   1.106 -            }
   1.107 -            finally
   1.108 -            {
   1.109 -                //Always executes, prevents memory leak
   1.110 -                Marshal.FreeHGlobal(deviceInfoBuffer);
   1.111 -            }
   1.112 -
   1.113 -            
   1.114 -            return success;
   1.115 -        }
   1.116 -
   1.117 -        /// <summary>
   1.118 -        /// Fetch pre-parsed data corresponding to HID descriptor for the given HID device.
   1.119 -        /// </summary>
   1.120 -        /// <param name="device"></param>
   1.121 -        /// <returns></returns>
   1.122 -        public static IntPtr GetPreParsedData(IntPtr hDevice)
   1.123 -        {
   1.124 -            uint ppDataSize = 0;
   1.125 -            int result = Win32.Function.GetRawInputDeviceInfo(hDevice, RawInputDeviceInfoType.RIDI_PREPARSEDDATA, IntPtr.Zero, ref ppDataSize);
   1.126 -            if (result != 0)
   1.127 -            {
   1.128 -                Debug.WriteLine("Failed to get raw input pre-parsed data size: " + result + " : " + Marshal.GetLastWin32Error());
   1.129 -                return IntPtr.Zero;
   1.130 -            }
   1.131 -
   1.132 -            IntPtr ppData = Marshal.AllocHGlobal((int)ppDataSize);
   1.133 -            result = Win32.Function.GetRawInputDeviceInfo(hDevice, RawInputDeviceInfoType.RIDI_PREPARSEDDATA, ppData, ref ppDataSize);
   1.134 -            if (result <= 0)
   1.135 -            {
   1.136 -                Debug.WriteLine("Failed to get raw input pre-parsed data: " + result + " : " + Marshal.GetLastWin32Error());
   1.137 -                return IntPtr.Zero;
   1.138 -            }
   1.139 -            return ppData;
   1.140 -        }
   1.141 -
   1.142 -        /// <summary>
   1.143 -        /// 
   1.144 -        /// </summary>
   1.145 -        /// <param name="device"></param>
   1.146 -        /// <returns></returns>
   1.147 -        public static string GetDeviceName(IntPtr device)
   1.148 -        {
   1.149 -            uint deviceNameSize = 256;
   1.150 -            int result = Win32.Function.GetRawInputDeviceInfo(device, RawInputDeviceInfoType.RIDI_DEVICENAME, IntPtr.Zero, ref deviceNameSize);
   1.151 -            if (result != 0)
   1.152 -            {
   1.153 -                return string.Empty;
   1.154 -            }
   1.155 -
   1.156 -            IntPtr deviceName = Marshal.AllocHGlobal((int)deviceNameSize * 2);  // size is the character count not byte count
   1.157 -            try
   1.158 -            {
   1.159 -                result = Win32.Function.GetRawInputDeviceInfo(device, RawInputDeviceInfoType.RIDI_DEVICENAME, deviceName, ref deviceNameSize);
   1.160 -                if (result > 0)
   1.161 -                {
   1.162 -                    return Marshal.PtrToStringAnsi(deviceName, result - 1); // -1 for NULL termination
   1.163 -                }
   1.164 -
   1.165 -                return string.Empty;
   1.166 -            }
   1.167 -            finally
   1.168 -            {
   1.169 -                Marshal.FreeHGlobal(deviceName);
   1.170 -            }
   1.171 -        }
   1.172 -
   1.173 -
   1.174 -        /// <summary>
   1.175 -        /// Populate the given tree-view control with our Raw Input Devices.
   1.176 -        /// </summary>
   1.177 -        /// <param name="aTreeView"></param>
   1.178 -        public static void PopulateDeviceList(TreeView aTreeView)
   1.179 -        {
   1.180 -
   1.181 -            //Get our list of devices
   1.182 -            RAWINPUTDEVICELIST[] ridList = null;
   1.183 -            uint deviceCount = 0;
   1.184 -            int res = Win32.Function.GetRawInputDeviceList(ridList, ref deviceCount,(uint)Marshal.SizeOf(typeof(RAWINPUTDEVICELIST)));
   1.185 -            if (res == -1)
   1.186 -            {
   1.187 -                //Just give up then
   1.188 -                return;
   1.189 -            }
   1.190 -
   1.191 -            ridList = new RAWINPUTDEVICELIST[deviceCount];
   1.192 -            res = Win32.Function.GetRawInputDeviceList(ridList, ref deviceCount, (uint)Marshal.SizeOf(typeof(RAWINPUTDEVICELIST)));
   1.193 -            if (res != deviceCount)
   1.194 -            {
   1.195 -                //Just give up then
   1.196 -                return;
   1.197 -            }
   1.198 -
   1.199 -            //For each our device add a node to our treeview
   1.200 -            foreach (RAWINPUTDEVICELIST device in ridList)
   1.201 -            {
   1.202 -                SharpLib.Hid.HidDevice hidDevice=new SharpLib.Hid.HidDevice(device.hDevice);
   1.203 -
   1.204 -                TreeNode node = null;
   1.205 -                if (hidDevice.Product != null && hidDevice.Product.Length > 1)
   1.206 -                {
   1.207 -                    //Add the devices with a proper name at the top
   1.208 -                    node = aTreeView.Nodes.Insert(0, hidDevice.Name, hidDevice.FriendlyName);
   1.209 -                }
   1.210 -                else
   1.211 -                {
   1.212 -                    //Add other once at the bottom
   1.213 -                    node = aTreeView.Nodes.Add(hidDevice.Name, hidDevice.FriendlyName);
   1.214 -                }
   1.215 -
   1.216 -                node.Nodes.Add("Manufacturer: " + hidDevice.Manufacturer);
   1.217 -                node.Nodes.Add("Product ID: 0x" + hidDevice.ProductId.ToString("X4"));
   1.218 -                node.Nodes.Add("Vendor ID: 0x" + hidDevice.VendorId.ToString("X4"));
   1.219 -                node.Nodes.Add("Version: " + hidDevice.Version);
   1.220 -                node.Nodes.Add(hidDevice.Info.dwType.ToString());
   1.221 -                if (hidDevice.Info.dwType == RawInputDeviceType.RIM_TYPEHID)
   1.222 -                {
   1.223 -                    node.Nodes.Add("UsagePage / UsageCollection: 0x" + hidDevice.Info.hid.usUsagePage.ToString("X4") + " / 0x" + hidDevice.Info.hid.usUsage.ToString("X4"));
   1.224 -                }
   1.225 -
   1.226 -                if (hidDevice.InputCapabilitiesDescription != null)
   1.227 -                {
   1.228 -                    node.Nodes.Add(hidDevice.InputCapabilitiesDescription);
   1.229 -                }
   1.230 -
   1.231 -                //Add button count
   1.232 -                node.Nodes.Add("Button Count: " + hidDevice.ButtonCount);
   1.233 -
   1.234 -                //Those can be joystick/gamepad axis
   1.235 -                if (hidDevice.InputValueCapabilities != null)
   1.236 -                {
   1.237 -                    foreach (HIDP_VALUE_CAPS caps in hidDevice.InputValueCapabilities)
   1.238 -                    {
   1.239 -                        string des = SharpLib.Hid.HidDevice.InputValueCapabilityDescription(caps);
   1.240 -                        if (des != null)
   1.241 -                        {
   1.242 -                            node.Nodes.Add(des);
   1.243 -                        }
   1.244 -                    }
   1.245 -
   1.246 -                }
   1.247 -
   1.248 -                node.Nodes.Add(hidDevice.Name);
   1.249 -            }
   1.250 -        }
   1.251 -
   1.252 -    }
   1.253 -}
   1.254 \ No newline at end of file