private void button1_Click(object sender, EventArgs e)
 {
     Graphics graphics = pictureBox1.CreateGraphics();
     graphics.Clear(pictureBox1.BackColor);
     int x=Cursor.Position.X;
     int y=Cursor.Position.Y;
     Cursor.Draw(graphics, new Rectangle(1,1,50,50));
     //以拉伸格式繪制
     // Cursor.DrawStretched(pictureBox1.CreateGraphics(), new Rectangle(1, 1, 50, 50));
     label1.Text = $"坐標:{x},{y}";
 }

/// <summary>
  /// 獲取鼠標信息
  /// </summary>
  /// <param name="cInfo"></param>
  /// <returns></returns>
  [DllImport("user32.dll", EntryPoint = "GetCursorInfo")]
  private static extern bool GetCursorInfo(ref CURSORINFO cInfo);

  /// <summary>
  /// 將指定的圖標從另一個模塊復(fù)制到當(dāng)前模塊。
  /// </summary>
  /// <param name="hIcon"></param>
  /// <returns></returns>
  [DllImport("user32.dll", EntryPoint = "CopyIcon")]
  private static extern IntPtr CopyIcon(IntPtr hIcon);

  /// <summary>
  /// 獲取有關(guān)指定圖標或光標的信息
  /// </summary>
  /// <param name="hIcon"></param>
  /// <param name="iInfo"></param>
  /// <returns></returns>
  [DllImport("user32.dll", EntryPoint = "GetIconInfo")]
  private static extern bool GetIconInfo(IntPtr hIcon, out ICONINFO iInfo);

private (int x, int y, Bitmap bmp) CaptureCursor()
  {
      CURSORINFO cURSORINFO = new CURSORINFO();

      cURSORINFO.cbSize = Marshal.SizeOf(cURSORINFO);
      if (GetCursorInfo(ref cURSORINFO))
      {
          if (cURSORINFO.flags == 0x00000001)
          {
              IntPtr icon = CopyIcon(cURSORINFO.hCursor);

              ICONINFO iCONINFO;
              if (GetIconInfo(icon, out iCONINFO))
              {
                  int x = cURSORINFO.ptScreenPos.X - iCONINFO.xHotspot;
                  int y = cURSORINFO.ptScreenPos.Y - iCONINFO.yHotspot;
                  Bitmap bmp = Icon.FromHandle(icon).ToBitmap();
                  return (x, y, bmp);
              }
          }
      }
      return (0,0,null);
  }

private void button3_Click(object sender, EventArgs e)
  {
      var cursor = CaptureCursor();
      pictureBox1.Image = cursor.bmp;
      label1.Text = $"坐標:{cursor.x},{cursor.y}";
  }