利用多线程句柄设置鼠标忙碌状态的实现方法

namespace CursorThread
{
    public partial class Form1 : Form
    {
        public delegate int DoSomethingDelegate(int data);

        public Form1()
        {
            InitializeComponent();
        }

        static int DoSomething(int data)
        {
            /// <sumary>
            /// Do something in this method
            /// </sumary>
            Thread.Sleep(300);
            return data++;

        }

        private void button1_Click(object sender, EventArgs e)
        {
            this.Cursor = Cursors.Default;

            DoSomethingDelegate d = DoSomething;
            IAsyncResult ar = d.BeginInvoke(100,null, null);

            while (true)
            {
                this.Cursor = Cursors.WaitCursor;
                if(ar.AsyncWaitHandle.WaitOne(50, false))
                {
                    this.Cursor = Cursors.Arrow;
                    break;
                }
            }

            //Get the result
            int result = d.EndInvoke(ar);
            MessageBox.Show(result.ToString());

        }
    }
}

// Do Something

// Set the status of the cursor
this.Cursor = Cursor.Arrow;

         /// Do Something

         Cursor.Current = Cursor.Arrow;
}