C# 托盘图标缓存清除

https://blog.csdn.net/weixin_42953003/article/details/119676004

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

namespace Board
{
    public class TaskBarUtil
    {

        [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);
        struct RECT
        {
            public int left, top, right, bottom;
        }

        public static void RefreshNotification()
        {
            var NotifyAreaHandle = GetNotifyAreaHandle();
            if (NotifyAreaHandle != IntPtr.Zero)
            {
                RefreshWindow(NotifyAreaHandle);
            }

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

        private 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);
        }

        private static IntPtr GetNotifyAreaHandle()
        {
            var TrayWndHandle = FindWindowEx(IntPtr.Zero, IntPtr.Zero, "Shell_TrayWnd", null);
            var TrayNotifyWndHandle = FindWindowEx(TrayWndHandle, IntPtr.Zero, "TrayNotifyWnd", null);
            var SysPagerHandle = FindWindowEx(TrayNotifyWndHandle, IntPtr.Zero, "SysPager", null);
            var NotifyAreaHandle = FindWindowEx(SysPagerHandle, IntPtr.Zero, "ToolbarWindow32", null);

            return NotifyAreaHandle;
        }

        private static IntPtr GetNotifyOverHandle()
        {
            var OverHandle = FindWindowEx(IntPtr.Zero, IntPtr.Zero, "NotifyIconOverflowWindow", null);
            var NotifyOverHandle = FindWindowEx(OverHandle, IntPtr.Zero, "ToolbarWindow32", null);

            return NotifyOverHandle;
        }

    }
}

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原文链接：https://blog.csdn.net/weixin_42953003/article/details/119676004

在程序主入口或者是程序关闭时添加如下代码，达到清理托盘图标缓存效果。

try
       {
           TaskBarUtil.RefreshNotification();//清除异常关闭程序托盘
       }
       catch (Exception)
       {
       }