C#实现带消息数的App图标

上次写了一篇博文,但是每次更新图标时,桌面会闪烁(刷新)https://www.jb51.net/article/73350.htm,有博友说人家的图标都不会刷新,还能动画.我想了一下,如果要达到这个效果,可以用Form来实现,就是在Form中嵌入一个图片,然后用一个label来动态显示消息数,关键是将Form的边框隐藏,背景设为透明即可.如果要有旋转或者缩放动画,都可以用C#来实现.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace AOPDemo
{
 public partial class AppIconMsg : Form
 {
   public AppIconMsg()
   {
     InitializeComponent();
     //设置背景为透明
     this.BackColor = Color.FromArgb(116, 164, 2);
     this.TransparencyKey = this.BackColor;

}

private void AppIconMsg_Load(object sender, EventArgs e)
   {
     this.Width = 64;
     this.Height = 64;
     this.label1.Text = "99";
     this.timer1.Enabled = true;

}

// Drag it around the screen
   private const int WM_NCHITTEST = 0x84;
   private const int HTCAPTION = 0x2;
   protected override void WndProc(ref Message m)
   {
     //Disable mouseDoubleClick on form
     if (m.Msg == WM_LBUTTONDBLCLK)
     {
       Form2 frm = new Form2(msg);
       frm.Show();
       //this.Close();
       return;
     }

if (m.Msg == WM_NCLBUTTONDBLCLK)
     {
       Form2 frm = new Form2(msg);
       frm.Show();
       // this.Close();
       return;
     }

//drag
     if (m.Msg == WM_NCHITTEST)
       m.Result = new IntPtr(HTCAPTION);
     else
       base.WndProc(ref m);
   }
   private int msg = 0;
   private void timer1_Tick(object sender, EventArgs e)
   {
     int num = new Random().Next(1, 100);
     msg = num;
     this.label1.Text = num.ToString();
   }

const int WM_LBUTTONDBLCLK = 0x0203;//client area
   const int WM_NCLBUTTONDBLCLK = 0x00A3;//non-client area
   private void toolStripExit_Click(object sender, EventArgs e)
   {
     this.Close();
   }

}
}