/* Professional Windows GUI Programming Using C# by Jay Glynn, Csaba Torok, Richard Conway, Wahid Choudhury, Zach Greenvoss, Shripad Kulkarni, Neil Whitlow Publisher: Peer Information ISBN: 1861007663 */ using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Data; using System.Runtime.InteropServices; namespace Wrox.ProgrammingWindowsGUI.Chapter5 { /// <summary> /// Summary description for Form1. /// </summary> public class KeyTimer : System.Windows.Forms.Form { /// <summary> /// Required designer variable. /// </summary> private System.ComponentModel.Container components = null; private uint start = 0; private uint stop = 0; [DllImport("kernel32.dll")] public static extern uint GetTickCount(); public KeyTimer() { // // Required for Windows Form Designer support // //InitializeComponent(); // // TODO: Add any constructor code after InitializeComponent call // } /// <summary> /// Clean up any resources being used. /// </summary> protected override void Dispose( bool disposing ) { if( disposing ) { if (components != null) { components.Dispose(); } } base.Dispose( disposing ); } #region Windows Form Designer generated code /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InitializeComponent() { // // Form1 // this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.ClientSize = new System.Drawing.Size(292, 142); this.Name = "Form1"; this.Text = "Form1"; } #endregion /// <summary> /// The main entry point for the application. /// </summary> [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"); } } }