How to create a floating (tooltip) control in Windows.Forms?

Question

Scene: A (small) form on which the UserControl is placed.

Plot: whenever UserControl raises a hover event, display some (graphical) information in the form of a hint. When the user moves the mouse, extinguish them again.

Notes. I would like to display more than one "hint", and each hint is a UserControl that displays information graphically. Not just text in the yellow box! In addition, I use the Windows.Forms library.

This is what I have so far:

private void myControl_Hovered(object sender, MyEventArgs e)
{            
    var tooltip = new MyToolTip();
    Controls.Add(tooltip);
    tooltip.UpdateDisplay(e.Data);
    tooltip.Show();
}

But it appears in the background (I can handle it) and, unfortunately, is limited to the window ...

---

EDIT: Here is what I ended up doing ...

ToolTip, .NET . , " " ( , ). ToolTip , - , , . . .

, ToolTipWindow . Offset, .

/// <summary>
/// A tooltip class to display some information from a control.
/// </summary>
internal class ToolTipWindow: Form
{
    /// <summary>
    /// The offset from the mouse pointer to show the window at.
    /// </summary>
    public Point Offset { get; set;}

    internal ToolTipWindow(Control controlToDisplay)
    {
        FormBorderStyle = FormBorderStyle.None;
        TopMost = true;
        ShowInTaskbar = false;
        Opacity = 0.9;
        Width = controlToDisplay.Width;
        Height = controlToDisplay.Height;
        Controls.Add(controlToDisplay);
        controlToDisplay.Show();
    }

    /// <summary>
    /// Move the window to an offset of mouse pointer.
    /// </summary>
    protected override void OnShown(EventArgs e)
    {
        base.OnShown(e);
        Location = new Point(MousePosition.X + Offset.X, MousePosition.Y + Offset.Y);
    }

    /// <summary>
    /// Move the window to an offset of mouse pointer.
    /// </summary>
    protected override void OnVisibleChanged(EventArgs e)
    {
        base.OnVisibleChanged(e);
        if (Visible)
        {
            Location = new Point(MousePosition.X + Offset.X, MousePosition.Y +     Offset.Y);    
        }
    }
}

, MouseHover MouseMove. , " " . MouseMove , " ". , , !

. MouseHover . , ( " " ), , " ", :

    #region AddReHoverExperience
    // ReSharper disable InconsistentNaming
    // found this code here: http://www.pinvoke.net/default.aspx/user32.TrackMouseEvent

    [DllImport("user32.dll")]
    static extern int TrackMouseEvent(ref TRACKMOUSEEVENT lpEventTrack);
    [StructLayout(LayoutKind.Sequential)]

    public struct TRACKMOUSEEVENT

    {
        public UInt32 cbSize;
        public UInt32 dwFlags;
        public IntPtr hwndTrack;
        public UInt32 dwHoverTime;
    }

    TRACKMOUSEEVENT tme;
    private const uint TME_HOVER = 0x1;

    protected override void OnMouseHover(EventArgs e)
    {            
        base.OnMouseHover(e);
        OnMouseEnter(e);
    }

    protected override void OnMouseEnter(EventArgs e)
    {
        base.OnMouseEnter(e);
        tme = new TRACKMOUSEEVENT
                  {
                      hwndTrack = Handle, 
                      dwFlags = TME_HOVER, 
                      dwHoverTime = 500
                  };
        tme.cbSize = (uint)Marshal.SizeOf(tme);
        TrackMouseEvent(ref tme);
    }
    // ReSharper restore InconsistentNaming
    #endregion AddReHoverExperience

Answer 1

, , , .

-, , ToolTip . , . , OwnerDraw, .

. - , , WF. , . Windows Forms, , Form. .

- , , . Parent UC, , LocationChanged, VisibleChanged FormClosing. UC ParentChanged HandleDestroyed.