MouseLeave Event With Two Panels [duplicate]

Question

I have 2 panels (Panel1 and Panel2) with Panel2 placed inside of Panel1

My code:

Private Sub Panel1_MouseLeave(sender As Object, e As EventArgs) Handles Panel1.MouseLeave
    MsgBox("Leave")
End Sub

The MsgBox pops-up when my mouse goes inside Panel2.

This is not logical, because my mouse is still contained in the area of ​​Panel1.

How can Panel2 be considered the same area as Panel1 for event purposes?

Answer 1

Consider the following figure,

Assume that the above picture is representing a two concrete slabs(Two panels) placed one above another (light gray:panel1, dark gray: panel2).

You are the person(Cursor) asked to stand up on position 1 in light-gray slab, what you will do, First you will enter into the light gray slab.[panel1.mouseEnter event got fired ] and finally you will reach the positon 1. similarly again you asked to stand up on the position 2 in dark gray slab, what you will do this time, you will leave the light gray slab [panel1.mouseLeave event got fired] and then you will enter into the dark gray slab [panel2.mouseEnter event got fired]. Did you notice.? you had left the light gray slab in order to enter into the dark gray one.

Similarly, Inside a form, especially on a stack of controls, One Control's Mouse Enter should be the previous control's Mouse Leave.