C#實現帶消息數的App圖標

2020-01-24 01:20:30

字體：大中小

來源：轉載

供稿：網友

上次寫了一篇博文,但是每次更新圖標時,桌面會閃爍(刷新)//www.49028c.com/article/73350.htm,有博友說人家的圖標都不會刷新,還能動畫.我想了一下,如果要達到這個效果,可以用Form來實現,就是在Form中嵌入一個圖片,然后用一個label來動態顯示消息數,關鍵是將Form的邊框隱藏,背景設為透明即可.如果要有旋轉或者縮放動畫,都可以用C#來實現.

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();      //設置背景為透明      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();    }  }}