using System;
using System.Windows.Form;
using System.Drawing;
public class Form1 : Form
{
private Timer m_timerMouseTrack;
public Form1()
{
m_timerMouseTrack = new Timer();
m_timerMouseTrack.Tick += new EventHandler(TimerMouseTrack_Tick);
}
private void TimerMouseTrack_Tick(object sender, EventArgs e)
{
Point ptMouse = PointToClient(Control.MousePosition);
if (ClientRectangle.Contains(ptMouse))
{
// Your own process here....
}
}
}