C# - 使用 SendInput 时未正确设置 MOUSEINPUT 坐标

Question

我正在尝试使用 SendInput 方法模拟鼠标输入。点击等工作正常，但坐标设置不正确。每次执行输入时，鼠标光标都会移动到屏幕的右下角。我尝试将 MOUSEINPUT X 和 Y 坐标更改为长数据类型as listed in the MSDN documentation，但 SendInput 方法总是返回错误并且输入不执行。

下面是我用来尝试这个的代码。我已经从创建和执行 KEYBDINPUT 结构的类似实现中移植了这段代码。该实现工作完美，所以我很困惑为什么不这样做。我确信它是非常小的东西，因为鼠标点击等成功执行它只是导致问题的坐标。

如果有人对这里出了什么问题有任何见解，我们将不胜感激。

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace SequenceAutomation
{
    #region Stucture declarations

    public struct MOUSEINPUT
    {
        public int X;
        public int Y;
        public uint MouseData;
        public uint Flags;
        public uint Time;
        public IntPtr ExtraInfo;
    }

    public struct HARDWAREINPUT
    {
        public uint Msg;
        public ushort ParamL;
        public ushort ParamH;
    }

    public struct KEYBDINPUT
    {
        public ushort KeyCode;
        public ushort Scan; 
        public uint Flags;
        public uint Time; 
        public IntPtr ExtraInfo;
    }

    [StructLayout(LayoutKind.Explicit)]
    public struct MOUSEKEYBDHARDWAREINPUT
    {
        [FieldOffset(0)]
        public MOUSEINPUT Mouse;

        [FieldOffset(0)]
        public KEYBDINPUT Keyboard;

        [FieldOffset(0)]
        public HARDWAREINPUT Hardware;
    }

    public struct INPUT
    {
        public uint Type;
        public MOUSEKEYBDHARDWAREINPUT Data; 
    }

    #endregion

    public class PlayRecording
    {
        #region Variable declarations

        public bool stopPlayback;
        private RecordingManager recManager;
        private float timeFactor; 
        private Dictionary<long, Dictionary<IntPtr, Dictionary<string, int>>> mouseDict;
        private Dictionary<long, INPUT[]> keysToPlay; 
        private Stopwatch watch;
        private long currentEntry;

        #endregion

        #region Libary importations

        // Importation of native libraries
        [DllImport("user32.dll", SetLastError = true)]
        private static extern uint SendInput(uint numberOfInputs, INPUT[] inputs, int sizeOfInputStructure);

        #endregion

        #region Public methods

        public PlayRecording(string inputJson, float timeFactor)
        {
            currentEntry = 0;
            this.timeFactor = timeFactor;
            stopPlayback = false;
            watch = new Stopwatch();

            recManager = new RecordingManager(inputJson);
            recManager.getDictionaries(inputJson);
            mouseDict = recManager.mouseDict;

            inputsToPlay = new Dictionary<long, INPUT[]>();
            prepareInputsToPlay();
        }

        public void Start()
        {
            currentEntry = 0; 
            watch.Reset();
            watch.Start();
            IEnumerator<long> enumerator = inputsToPlay.Keys.GetEnumerator(); 
            while (enumerator.MoveNext())
            {
                while (watch.ElapsedTicks < (enumerator.Current * timeFactor)) { }

                if (!stopPlayback)
                    uint err = SendInput((uint)keysToPlay[enumerator.Current].Length, keysToPlay[enumerator.Current], Marshal.SizeOf(typeof(INPUT)));

                currentEntry = enumerator.Current; 
            }
        }


        public bool Stop()
        {
            watch.Stop();
            return true;
        }

        #endregion

        #region Private methods

        private void prepareInputsToPlay()
        {
            foreach (KeyValuePair<long, Dictionary<IntPtr, Dictionary<string, int>>> kvp in mouseDict)
            {
                List<INPUT> inputs = new List<INPUT>();

                foreach (KeyValuePair<IntPtr, Dictionary<string, int>> kvp2 in kvp.Value)
                {
                    int x = 0;
                    int y = 0;
                    foreach (KeyValuePair<string, int> kvp3 in kvp2.Value)
                    {
                        if (kvp3.Key == "X")
                            x = Convert.ToInt32(kvp3.Value);
                        if (kvp3.Key == "Y")
                            y = Convert.ToInt32(kvp3.Value);
                    }
                    inputs.Add(loadMouse(x, y, getFlags(kvp2.Key)));
                }
                inputsToPlay.Add(kvp.Key, inputs.ToArray());
            }
        }

        // This is where the flags are set
        private uint getFlags(IntPtr activity)
        {
            string activityInt = Convert.ToString(activity);
            switch(activityInt)
            {
                    return 0x0002;
                case "512":
                    return 0x0001;
                case "513":
                    return 0x0002;
                case "514":
                    return 0x0004;
                case "516":
                    return 0x0008;
                case "517":
                    return 0x0010;
                case "522":
                    return 0x0800;
                default:
                    return 0;
            }
        }

        // This is where the input structures are being created
        private INPUT loadMouse(int x, int y, uint flags)
        {
            return new INPUT
            {
                Type = 0,
                Data =
                {
                    Mouse = new MOUSEINPUT
                    {
                        X = x,
                        Y = y,
                        MouseData = 0,
                        Flags = flags,
                        Time = 0,
                        ExtraInfo = IntPtr.Zero
                    }
                }
            };
        }

        #endregion
    }
}

Answer 1

除非您包含标志MOUSEEVENTF_ABSOLUTE (0x8000)，否则鼠标坐标是相对坐标。如果您在没有此标志的情况下传递绝对坐标，鼠标将快速移动到屏幕的一个角