MouseEnter and MouseLeave events from a Panel and its child controls

Question

I have a Panel that contains child controls.

If I handle the Panel\'s MouseEnter and MouseLeave events, and its c

Answer 1

Jimmy T. is right. There will be problems if there is no (or small) space betwean Parent Control (Panel) edge and Child Control.

This is how I solve this problem in UserControl-derived class:

    public CSStackPanelItem()
    {
        InitializeComponent();

        MouseEnter += new EventHandler(CSStackPanelItem_MouseEnter);

        foreach (Control child in Controls)
        {
            child.MouseEnter += (s, e) => CSStackPanelItem_MouseEnter(s, e);
            child.MouseLeave += (s, e) => OnMouseLeave(e);
        }
    }

    protected override void OnMouseLeave(EventArgs e)
    {
        if (this.ClientRectangle.Contains(this.PointToClient(Control.MousePosition)))
            return; //suppress mouse leave event handling

        if (m_bIsHover)
        {
            m_bIsHover = false;
            Invalidate(); //actually my mouse Enter/Leave event
        }

        base.OnMouseLeave(e);
    }

    void CSStackPanelItem_MouseEnter(object sender, EventArgs e)
    {
        m_bIsHover = true;
        Invalidate(); //actually my mouse Enter/Leave event
    }