Unity中使用GetRawInputData

在Unity中，要使用GetRawInputData函数获取原始输入数据，你需要使用Windows的原生API来实现。下面是一个示例代码，展示了如何在Unity中使用GetRawInputData函数：

using System;
using System.Runtime.InteropServices;
using UnityEngine;

public class RawInputExample : MonoBehaviour
{
    [StructLayout(LayoutKind.Sequential)]
    public struct RAWINPUTDEVICE
    {
        public ushort usUsagePage;
        public ushort usUsage;
        public uint dwFlags;
        public IntPtr hwndTarget;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct RAWINPUTHEADER
    {
        public uint dwType;
        public uint dwSize;
        public IntPtr hDevice;
        public IntPtr wParam;
    }

    [DllImport("user32.dll")]
    public static extern bool RegisterRawInputDevices([MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 0)] RAWINPUTDEVICE[] pRawInputDevices, uint uiNumDevices, uint cbSize);

    [DllImport("user32.dll")]
    public static extern uint GetRawInputData(IntPtr hRawInput, uint uiCommand, IntPtr pData, ref uint pcbSize, uint cbSizeHeader);

    const int RIDEV_INPUTSINK = 0x00000100;
    const int RID_INPUT = 0x10000003;

    void Start()
    {
        RAWINPUTDEVICE[] devices = new RAWINPUTDEVICE[1];

        devices[0].usUsagePage = 0x01; // Generic desktop controls
        devices[0].usUsage = 0x06; // Keyboard
        devices[0].dwFlags = RIDEV_INPUTSINK;
        devices[0].hwndTarget = IntPtr.Zero;

        if (!RegisterRawInputDevices(devices, (uint)devices.Length, (uint)Marshal.SizeOf(dev