using System.Runtime.InteropServices; using System.Reflection;

[DllImport("user32.dll")] public static extern IntPtr LoadCursorFromFile(string fileName); [DllImport("user32.dll")] public static extern IntPtr SetCursor(IntPtr cursorHandle); [DllImport("user32.dll")]  public static extern uint DestroyCursor(IntPtr cursorHandle);

private void Form1_Load(object sender, EventArgs e)         {             Cursor myCursor = new Cursor(Cursor.Current.Handle);             IntPtr colorCursorHandle = LoadCursorFromFile("my.cur");//鼠标图标路径               myCursor.GetType().InvokeMember("handle", BindingFlags.Public |             BindingFlags.NonPublic | BindingFlags.Instance |             BindingFlags.SetField, null, myCursor,             new object[] { colorCursorHandle });             this.Cursor = myCursor;         }

public void SetCursor(Bitmap cursor, Point hotPoint)         {             int hotX = hotPoint.X;             int hotY = hotPoint.Y;             Bitmap myNewCursor = new Bitmap(cursor.Width * 2 - hotX, cursor.Height * 2 - hotY);             Graphics g = Graphics.FromImage(myNewCursor);             g.Clear(Color.FromArgb(0, 0, 0, 0));             g.DrawImage(cursor, cursor.Width - hotX, cursor.Height - hotY, cursor.Width,             cursor.Height);             this.Cursor = new Cursor(myNewCursor.GetHicon());             g.Dispose();             myNewCursor.Dispose();         }

private void Form1_Load(object sender, EventArgs e)         {             Bitmap a=(Bitmap)Bitmap.FromFile("myCur.png");             SetCursor(a, new Point(0, 0));         }