MouseHook在处理时导致抖动鼠标移动

Question

我正在使用UIAutomation构建一个应用程序，该应用程序在典型的Microsoft Windows用户界面上标记某些小部件，例如： Windows资源管理器，控制面板。我正在使用基于微软博客示例的UIA的适当线程，一切都运行良好。窗口小部件的标记由某些事件触发，其中一个事件是使用下面显示的低级鼠标钩代码单击鼠标。我遇到的问题是，当用鼠标点击更新UI时，当UI正在更新时，鼠标移动会变得很抖动（如不平滑）。所以我想到的是鼠标动作事件需要在不同的线程中运行。虽然我已经编程了很多年，但它一直在关闭，所以我对这种线程问题很有信心。我在鼠标拍卖活动中尝试过以下代码，但没有区别。任何帮助非常感谢。我特别感谢示例代码，特别是解释。

// Setup global mouse hook to react to mouse clicks under certain conditions, see event handler
                MouseHook.Start();
                MouseHook.MouseAction += new EventHandler(MouseHook_MouseAction);

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.Threading;

namespace myapplication
{
    public static class MouseHook
    {
        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern IntPtr SetWindowsHookEx(int idHook,
          LowLevelMouseProc lpfn, IntPtr hMod, uint dwThreadId);

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        private static extern bool UnhookWindowsHookEx(IntPtr hhk);

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode,
          IntPtr wParam, IntPtr lParam);

        [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern IntPtr GetModuleHandle(string lpModuleName);

        public static event EventHandler MouseAction = delegate { };

        private const int WH_MOUSE_LL = 14;

        private enum MouseMessages
        {
            WM_LBUTTONDOWN = 0x0201,
          //  WM_LBUTTONUP = 0x0202,
          //  WM_MOUSEMOVE = 0x0200,
            WM_MOUSEWHEEL = 0x020A,
            WM_RBUTTONDOWN = 0x0204,
            //WM_RBUTTONUP = 0x0205
        }

        [StructLayout(LayoutKind.Sequential)]
        private struct POINT
        {
            public int x;
            public int y;
        }

        [StructLayout(LayoutKind.Sequential)]
        private struct MSLLHOOKSTRUCT
        {
            public POINT pt;
            public uint mouseData;
            public uint flags;
            public uint time;
            public IntPtr dwExtraInfo;
        }

        public static void Start()
        {
            _hookID = SetHook(_proc);

        }
        public static void stop()
        {
            UnhookWindowsHookEx(_hookID);
        }

        private static LowLevelMouseProc _proc = HookCallback;
        private static IntPtr _hookID = IntPtr.Zero;

        private static IntPtr SetHook(LowLevelMouseProc proc)
        {
            using (Process curProcess = Process.GetCurrentProcess())
            using (ProcessModule curModule = curProcess.MainModule)
            {
                IntPtr hook = SetWindowsHookEx(WH_MOUSE_LL, proc, GetModuleHandle("user32"), 0);
                if (hook == IntPtr.Zero) throw new System.ComponentModel.Win32Exception();
                return hook;
            }
        }

        private delegate IntPtr LowLevelMouseProc(int nCode, IntPtr wParam, IntPtr lParam);

        private static IntPtr HookCallback(
          int nCode, IntPtr wParam, IntPtr lParam)
        {
            if (nCode >= 0 && (MouseMessages.WM_LBUTTONDOWN == (MouseMessages)wParam || MouseMessages.WM_RBUTTONDOWN == (MouseMessages)wParam ||
                MouseMessages.WM_MOUSEWHEEL == (MouseMessages)wParam))
            {
                MSLLHOOKSTRUCT hookStruct = (MSLLHOOKSTRUCT)Marshal.PtrToStructure(lParam, typeof(MSLLHOOKSTRUCT));
                MouseAction(null, new EventArgs());
            }
            return CallNextHookEx(_hookID, nCode, wParam, lParam);
        }

    }
}

private void MouseHook_MouseAction(object sender, EventArgs e)
        {

           //my attempt at threading solution
                Thread th = new Thread(() =>
                {
                    UpdateUI();
                    Application.Run();
                });
                th.SetApartmentState(ApartmentState.STA);

                th.Start();
}