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 start = 0;
private uint stop = 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) {
start = GetTickCount();
}
protected override void OnKeyUp(KeyEventArgs args) {
stop = GetTickCount();
uint elapsed = (stop - start);
MessageBox.Show(Convert.ToString(args.KeyData) + ", time elapsed: " + Convert.ToString(elapsed) + " msecs");
}
}
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