如何在自定义控件中包含光标(插入符号)？

// 使用自定义渲染器绘制光标
public class CustomControl : Control
{
    protected override void OnPaint(PaintEventArgs e)
    {
        base.OnPaint(e);

        // 绘制光标
        int cursorX = 10;
        int cursorY = 10;
        int cursorWidth = 2;
        int cursorHeight = 14;
        e.Graphics.FillRectangle(Brushes.Black, cursorX, cursorY, cursorWidth, cursorHeight);
    }
}

// 使用光标控件
public class CustomControl : Control
{
    private CursorControl cursorControl;

    public CustomControl()
    {
        cursorControl = new CursorControl();
        Controls.Add(cursorControl);
    }

    protected override void OnSizeChanged(EventArgs e)
    {
        base.OnSizeChanged(e);

        // 更新光标控件的位置
        cursorControl.Location = new Point(10, 10);
    }
}

// 使用系统API设置光标
public class CustomControl : Control
{
    [DllImport("user32.dll")]
    static extern bool SetCursorPos(int x, int y);

    protected override void OnMouseMove(MouseEventArgs e)
    {
        base.OnMouseMove(e);

        // 更新光标位置
        SetCursorPos(e.X, e.Y);
    }
}