using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Runtime.InteropServices;

public class KeyTimer : System.Windows.Forms.Form {
    private System.ComponentModel.Container components = null;
    private uint startCount = 0;
    private uint stopCount = 0;

    [DllImport("kernel32.dll")]
    public static extern uint GetTickCount();

    public KeyTimer() {
    }

    [STAThread]
    static void Main() {
        Application.Run(new KeyTimer());

    }

    protected override void OnKeyDown(KeyEventArgs args) {
        startCount = GetTickCount();
    }

    protected override void OnKeyUp(KeyEventArgs args) {
        stopCount = GetTickCount();
        uint elapsedCount = (stopCount - startCount);
        MessageBox.Show(Convert.ToString(args.KeyData) + ", time elapsed: " + Convert.ToString(elapsedCount ) + " msecs");
    }
}