protected override void OnMouseLeave(EventArgs e)
{
CustomPanel parent = this.Parent as CustomPanel;
parent.RemoveButton.SendToBack();
base.OnMouseLeave(e);
}
public Form1()
{
InitializeComponent();
CustomPanel panel1 = new CustomPanel();
panel1.Location = new Point(50, 50);
panel1.Width = 400;
panel1.Height = 300;
panel1.BackColor = Color.LightGray;
panel1.Visible = true;
this.Controls.Add(panel1);
CustomLabel lbl1 = new CustomLabel();
lbl1.Width = 100;
lbl1.Height = 100;
lbl1.BackColor = Color.Blue;
lbl1.Location = new Point(0, 0);
CustomLabel lbl2 = new CustomLabel();
lbl2.Width = 300;
lbl2.Height = 100;
lbl2.BackColor = Color.Yellow;
lbl2.Location = new Point(100, 0);
panel1.Controls.Add(lbl1);
panel1.Controls.Add(lbl2);
button1.Visible = false;
}
protected override void OnMouseEnter(EventArgs e)
{
CustomPanel parent = this.Parent as CustomPanel;
parent.RemoveButton.BringToFront();
parent.RemoveButton.Update();
base.OnMouseEnter(e);
}