程序异常退出,重新启动后,自动清理系统托盘上残留的图标

using System;
using System.Runtime.InteropServices;

namespace WinTestButton
{
    public class TaskBarUtil
    {
        struct RECT
        {
            public int left, top, right, bottom;
        }
        /// <summary>刷新系统托盘图标,释放程序上次异常退出时留在系统托盘的图标</summary>
        public static void RefreshNotification()
        {
            var NotifyAreaHandle = GetNotifyAreaHandle();
            if (NotifyAreaHandle != IntPtr.Zero)
                RefreshWindow(NotifyAreaHandle);

            var NotifyOverHandle = GetNotifyOverHandle();
            if (NotifyOverHandle != IntPtr.Zero)
                RefreshWindow(NotifyOverHandle);
        }

        static void RefreshWindow(IntPtr windowHandle)
        {
            const uint WM_MOUSEMOVE = 0x0200;
            RECT rect;
            GetClientRect(windowHandle, out rect);
            for (var x = 0; x < rect.right; x += 5)
                for (var y = 0; y < rect.bottom; y += 5)
                    SendMessage(windowHandle, WM_MOUSEMOVE, 0, (y << 16) + x);
        }
        /// <summary>直接显示区域</summary>
        static IntPtr GetNotifyAreaHandle()
        {
            var TrayWndHandle = FindWindowEx(IntPtr.Zero, IntPtr.Zero, "Shell_TrayWnd", string.Empty);
            var TrayNotifyWndHandle = FindWindowEx(TrayWndHandle, IntPtr.Zero, "TrayNotifyWnd", string.Empty);
            var SysPagerHandle = FindWindowEx(TrayNotifyWndHandle, IntPtr.Zero, "SysPager", string.Empty);
            var NotifyAreaHandle = FindWindowEx(SysPagerHandle, IntPtr.Zero, "ToolbarWindow32", null);

            return NotifyAreaHandle;
        }
        /// <summary>溢出隐藏区域</summary>
        static IntPtr GetNotifyOverHandle()
        {
            var OverHandle = FindWindowEx(IntPtr.Zero, IntPtr.Zero, "NotifyIconOverflowWindow", string.Empty);
            var NotifyOverHandle = FindWindowEx(OverHandle, IntPtr.Zero, "ToolbarWindow32", null);

            return NotifyOverHandle;
        }

        [DllImport("user32.dll", SetLastError = true)]
        static extern IntPtr FindWindowEx(IntPtr parentHandle, IntPtr childAfter, string className, string windowTitle);
        [DllImport("user32.dll")]
        static extern bool GetClientRect(IntPtr handle, out RECT rect);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        static extern IntPtr SendMessage(IntPtr handle, UInt32 message, Int32 wParam, Int32 lParam);
    }
}

WinTestButton.TaskBarUtil.RefreshNotification();