■ 고정밀 지연 함수를 만드는 방법을 보여준다. ▶ 예제 코드 (C#)
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using System.Diagnostics; #region 지연시키기 - Delay(delayTime) /// <summary> /// 지연시키기 /// </summary> /// <param name="delayTime">지연 시간 (단위 : 밀리초)</param> public void Delay(long delayTime) { Stopwatch stopwatch = Stopwatch.StartNew(); long tick = (delayTime * Stopwatch.Frequency) / 1000000; while(stopwatch.ElapsedTicks < tick); } #endregion |
■ 멀티미디어 타이머를 사용하는 방법을 보여준다. ▶ MultimediaTimerDelegate.cs
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namespace TestProject { /// <summary> /// 멀티미디어 타이머 대리자 /// </summary> /// <param name="id">ID</param> /// <param name="message">메시지</param> /// <param name="userContext">사용자 컨텍스트</param> /// <param name="reserved1">예약 1</param> /// <param name="reserved2">예약 2</param> public delegate void MultimediaTimerDelegate(uint id, uint message, ref uint userContext, uint reserved1, uint reserved2); } |
▶ MultimediaTimer.cs
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using System; using System.ComponentModel; using System.Runtime.InteropServices; namespace TestProject { /// <summary> /// 멀티미디어 타이머 /// </summary> public class MultimediaTimer : IDisposable { //////////////////////////////////////////////////////////////////////////////////////////////////// Event ////////////////////////////////////////////////////////////////////////////////////////// Public #region 틱 이벤트 - Tick /// <summary> /// 틱 이벤트 /// </summary> public event EventHandler Tick; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Import ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Private #region 타이머 이벤트 설정하기 - TimeSetEvent(delay, resolution, callback, userContext, eventType) /// <summary> /// 타이머 이벤트 설정하기 /// </summary> /// <param name="delay">지연 시간 (단위 : ms)</param> /// <param name="resolution">해상도 (단위 : ms)</param> /// <param name="callback">콜백 함수</param> /// <param name="userContext">사용자 컨텍스트</param> /// <param name="eventType">이벤트 타입</param> /// <returns>타이머 ID</returns> /// <remarks> /// eventType : 0(1회성 이벤트), 1(정기 이벤트) /// </remarks> [DllImport("winmm", SetLastError = true, EntryPoint = "timeSetEvent")] private static extern uint TimeSetEvent(uint delay, uint resolution, MultimediaTimerDelegate callback, ref uint userContext, uint eventType); #endregion #region 타이머 이벤트 제거하기 - TimeKillEvent(timerID) /// <summary> /// 타이머 이벤트 제거하기 /// </summary> /// <param name="timerID">타이머 ID</param> [DllImport("winmm", SetLastError = true, EntryPoint = "timeKillEvent")] private static extern void TimeKillEvent(uint timerID); #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 리소스 해제 여부 /// </summary> private bool disposed = false; /// <summary> /// 주기 /// </summary> private int interval; /// <summary> /// 해상도 (단위 : ms) /// </summary> private int resolution; /// <summary> /// 타이머 ID /// </summary> private uint timerID; /// <summary> /// 멀티미디어 타이머 대리자 /// </summary> private readonly MultimediaTimerDelegate multimediaTimerDelegate; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 주기 - Interval /// <summary> /// 주기 /// </summary> public int Interval { get { return this.interval; } set { if(this.disposed) { throw new ObjectDisposedException("MultimediaTimer"); } if(value < 0) { throw new ArgumentOutOfRangeException("Interval"); } this.interval = value; if(Resolution > Interval) { Resolution = value; } } } #endregion #region 해상도 - Resolution /// <summary> /// 해상도 /// </summary> public int Resolution { get { return this.resolution; } set { if(this.disposed) { throw new ObjectDisposedException("MultimediaTimer"); } if(value < 0) { throw new ArgumentOutOfRangeException("Resolution"); } this.resolution = value; } } #endregion #region 실행 여부 - IsRunning /// <summary> /// 실행 여부 /// </summary> public bool IsRunning { get { return this.timerID != 0; } } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MultimediaTimer() /// <summary> /// 생성자 /// </summary> public MultimediaTimer() { this.multimediaTimerDelegate = new MultimediaTimerDelegate(ProcessMultimediaTimer); Resolution = 5; Interval = 10; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Destructor #region 소멸자 - ~MultimediaTimer() /// <summary> /// 소멸자 /// </summary> ~MultimediaTimer() { Dispose(false); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 시작하기 - Start() /// <summary> /// 시작하기 /// </summary> public void Start() { if(this.disposed) { throw new ObjectDisposedException("MultimediaTimer"); } if(IsRunning) { return; } uint userContext = 0; this.timerID = TimeSetEvent((uint)Interval, (uint)Resolution, multimediaTimerDelegate, ref userContext, 1); if(this.timerID == 0) { int error = Marshal.GetLastWin32Error(); throw new Win32Exception(error); } } #endregion #region 중단하기 - Stop() /// <summary> /// 중단하기 /// </summary> public void Stop() { if(this.disposed) { throw new ObjectDisposedException("MultimediaTimer"); } if(!IsRunning) { return; } StopInternal(); } #endregion #region 리소스 해제하기 - Dispose() /// <summary> /// 리소스 해제하기 /// </summary> public void Dispose() { Dispose(true); } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Private #region 멀티미디어 타이머 처리하기 - ProcessMultimediaTimer(id, message, userContext, reserved1, reserved2) /// <summary> /// 멀티미디어 타이머 처리하기 /// </summary> /// <param name="id">ID</param> /// <param name="message">메시지</param> /// <param name="userContext">사용자 컨텍스트</param> /// <param name="reserved1">예약 1</param> /// <param name="reserved2">예약 2</param> private void ProcessMultimediaTimer(uint id, uint message, ref uint userContext, uint reserved1, uint reserved2) { Tick?.Invoke(this, EventArgs.Empty); } #endregion #region 중단하기 (내부용) - StopInternal() /// <summary> /// 중단하기 (내부용) /// </summary> private void StopInternal() { TimeKillEvent(this.timerID); this.timerID = 0; } #endregion #region 리소스 해제하기 - Dispose(disposing) /// <summary> /// 리소스 해제하기 /// </summary> /// <param name="disposing">리소스 해제 여부</param> private void Dispose(bool disposing) { if(this.disposed) { return; } this.disposed = true; if(IsRunning) { StopInternal(); } if(disposing) { Tick = null; GC.SuppressFinalize(this); } } #endregion } } |
▶ MainForm.cs
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using System; using System.Diagnostics; using System.Windows.Forms; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : Form { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 스톱워치 /// </summary> private Stopwatch stopwatch = new Stopwatch(); /// <summary> /// 멀티미디어 타이머 /// </summary> private MultimediaTimer multimediaTimer; /// <summary> /// 표시 타이머 /// </summary> private Timer displayTimer; /// <summary> /// 현재 경과 시간 (단위 : 밀리초) /// </summary> private double currentElapsedTime; /// <summary> /// 이전 시간 (단위 : 밀리초) /// </summary> private double previousTime; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); this.multimediaTimer = new MultimediaTimer(); this.multimediaTimer.Interval = 1; this.multimediaTimer.Resolution = 0; this.displayTimer = new Timer(); this.displayTimer.Interval = 30; FormClosing += Form_FormClosing; this.multimediaTimer.Tick += multimediaTimer_Tick; this.displayTimer.Tick += displayTimer_Tick; this.multimediaTimer.Start(); this.displayTimer.Start(); this.stopwatch.Start(); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 폼을 닫을 경우 처리하기 - Form_FormClosing(sender, e) /// <summary> /// 폼을 닫을 경우 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void Form_FormClosing(object sender, FormClosingEventArgs e) { this.displayTimer.Stop(); this.multimediaTimer.Stop(); } #endregion #region 멀티미디어 타이머 틱 처리하기 - multimediaTimer_Tick(sender, e) /// <summary> /// 멀티미디어 타이머 틱 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void multimediaTimer_Tick(object sender, EventArgs e) { this.currentElapsedTime = this.stopwatch.ElapsedMilliseconds - this.previousTime; Console.WriteLine($"멀티미디어 타이머 : [{DateTime.UtcNow:o}] {currentElapsedTime}"); this.previousTime = this.stopwatch.ElapsedMilliseconds ; } #endregion #region 표시 타이머 틱 처리하기 - displayTimer_Tick(sender, e) /// <summary> /// 표시 타이머 틱 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void displayTimer_Tick(object sender, EventArgs e) { this.currentElaspesTimeValueLabel.Text = this.currentElapsedTime.ToString(); } #endregion } } |
TestProject.zip
■ Task 클래스의 Delay 정적 메소드를 사용해 1초를 대기하는 방법을 보여준다. ▶ 예제 코드 (C#)
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using System; using System.Threading.Tasks; await Task.Delay(TimeSpan.FromSeconds(1)); |
■ Timer 클래스에서 periodic 팩토리 생성자를 사용하는 방법을 보여준다. ▶ main.dart
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import 'dart:async'; import 'package:flutter/material.dart'; void main() { runApp(TestApplication()); } class TestApplication extends StatelessWidget { @override Widget build(BuildContext context) { return MaterialApp( title: 'Test Application', theme: ThemeData( primarySwatch: Colors.blue, ), home: MainPage(), ); } } class MainPage extends StatefulWidget { @override _MainPageState createState() => _MainPageState(); } class _MainPageState extends State<MainPage> { Timer _timer; bool _isRunning = false; int _timerCount = 0; String _buttonText = 'Start'; @override void dispose() { _timer?.cancel(); super.dispose(); } @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: Text('Test Application'), ), body: Center( child: Column( mainAxisAlignment: MainAxisAlignment.center, children: [ RaisedButton( child: Text("$_buttonText"), color: Colors.orange, onPressed: () { _isRunning = !_isRunning; if (_isRunning) { setState(() { _timerCount = 0; _buttonText = 'Stop'; }); _timer = Timer.periodic(Duration(milliseconds: 10), (timer) { setState(() { _timerCount++; }); }); } else { _timer?.cancel(); setState(() { _buttonText = 'Start'; }); } }, ), Padding( padding: const EdgeInsets.only(top: 10.0), child: Text("$_timerCount"), ), ], ), ), ); } } |
test_app.zip
■ DispatcherTimer 클래스를 사용해 원 형태로 이동시키는 방법을 보여준다. ▶ MainWindow.xaml
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<Window x:Class="TestProject.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Width="800" Height="600" Title="DispatcherTimer 클래스 : 원 형태으로 이동시키기" FontFamily="나눔고딕코딩" FontSize="16"> <Canvas Name="canvas" Margin="10"> <Ellipse Name="ellipse" Width="30" Height="30" Fill="Orange" /> <Button Name="button" Canvas.Right="10" Canvas.Bottom="10" Width="100" Height="30" Content="실행" /> </Canvas> </Window> |
▶ MainWindow.xaml.cs
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using System; using System.Windows; using System.Windows.Controls; using System.Windows.Threading; namespace TestProject { /// <summary> /// 메인 윈도우 /// </summary> public partial class MainWindow : Window { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 타이머 /// </summary> private DispatcherTimer timer; /// <summary> /// 캔버스 중심 X /// </summary> private double canvasCenterX; /// <summary> /// 캔버스 중심 Y /// </summary> private double canvasCenterY; /// <summary> /// 타원 1/2 너비 /// </summary> private double ellipseHalfWidth; /// <summary> /// 타원 1/2 높이 /// </summary> private double ellipseHalfHeight; /// <summary> /// 반지름 /// </summary> private double radius = 250; /// <summary> /// 각도 /// </summary> private double angle = 0; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainWindow() /// <summary> /// 생성자 /// </summary> public MainWindow() { InitializeComponent(); this.timer = new DispatcherTimer(); this.timer.Interval = TimeSpan.FromMilliseconds(100); SizeChanged += Window_SizeChanged; Loaded += Window_Loaded; this.timer.Tick += timer_Tick; this.button.Click += button_Click; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 윈도우 크기 변경시 처리하기 - Window_SizeChanged(sender, e) /// <summary> /// 윈도우 크기 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void Window_SizeChanged(object sender, SizeChangedEventArgs e) { this.canvasCenterX = this.canvas.ActualWidth / 2; this.canvasCenterY = this.canvas.ActualHeight / 2; } #endregion #region 윈도우 로드시 처리하기 - Window_Loaded(sender, e) /// <summary> /// 윈도우 로드시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void Window_Loaded(object sender, RoutedEventArgs e) { this.ellipseHalfWidth = this.ellipse.Width / 2; this.ellipseHalfHeight = this.ellipse.Height / 2; double ellipseLeft = this.canvasCenterX - this.ellipseHalfWidth; double ellipseTop = this.canvasCenterY + this.radius - this.ellipseHalfHeight; Canvas.SetLeft(this.ellipse, ellipseLeft); Canvas.SetTop (this.ellipse, ellipseTop ); } #endregion #region 타이머 틱 처리하기 - timer_Tick(sender, e) /// <summary> /// 타이머 틱 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void timer_Tick(object sender, EventArgs e) { this.angle = this.angle + 10; if(this.angle > 360) { this.angle = 0; } double radian = this.angle * Math.PI / 180; double ellipseLeft = this.canvasCenterX + this.radius * Math.Sin(radian) - this.ellipseHalfWidth; double ellipseTop = this.canvasCenterY + this.radius * Math.Cos(radian) - this.ellipseHalfHeight; Canvas.SetLeft(this.ellipse, ellipseLeft); Canvas.SetTop (this.ellipse, ellipseTop ); } #endregion #region 실행 버튼 클릭시 처리하기 - button_Click(sender, e) /// <summary> /// 실행 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void button_Click(object sender, RoutedEventArgs e) { this.angle = 0; double ellipseLeft = this.canvasCenterX - this.ellipseHalfWidth; double ellipseTop = this.canvasCenterY + this.radius - this.ellipseHalfHeight; Canvas.SetLeft(this.ellipse, ellipseLeft); Canvas.SetTop (this.ellipse, ellipseTop ); this.timer.Start(); } #endregion } } |
TestProject.zip
■ DispatcherTimer 클래스를 사용해 파동 형태로 이동시키는 방법을 보여준다. ▶ MainWindow.xaml
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<Window x:Class="TestProject.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Width="800" Height="600" Title="DispatcherTimer 클래스 : 파동 형태로 이동시키기" FontFamily="나눔고딕코딩" FontSize="16"> <Canvas Name="canvas" Margin="10"> <Ellipse Name="ellipse" Canvas.Left="0" Canvas.Top="250" Width="30" Height="30" Fill="Orange" /> <Button Name="button" Canvas.Bottom="10" Canvas.Right="10" Width="100" Height="30" Content="실행" /> </Canvas> </Window> |
▶ MainWindow.xaml.cs
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using System; using System.Windows; using System.Windows.Controls; using System.Windows.Threading; namespace TestProject { /// <summary> /// 메인 윈도우 /// </summary> public partial class MainWindow : Window { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 타이머 /// </summary> private DispatcherTimer timer; /// <summary> /// 진폭 /// </summary> private const double AMPLITUDE = 50; /// <summary> /// 파장 /// </summary> private const double WAVE_LENGTH = 100; /// <summary> /// 주기 /// </summary> private const double CYCLE = 5; /// <summary> /// 시간 /// </summary> private double time = 0; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainWindow() /// <summary> /// 생성자 /// </summary> public MainWindow() { InitializeComponent(); this.timer = new DispatcherTimer(); this.timer.Interval = TimeSpan.FromMilliseconds(100); this.timer.Tick += timer_Tick; this.button.Click += button_Click; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 타이머 틱 처리하기 - timer_Tick(sender, e) /// <summary> /// 타이머 틱 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void timer_Tick(object sender, EventArgs e) { double target = this.canvas.ActualWidth; double left = Canvas.GetLeft(this.ellipse) + 10; double top = AMPLITUDE * Math.Sin(2 * Math.PI * this.time / CYCLE - 2 * Math.PI * left / WAVE_LENGTH) + 250; if(left + this.ellipse.Width > target) { this.timer.Stop(); return; } this.time = this.time + 0.05; Canvas.SetLeft(this.ellipse, left); Canvas.SetTop (this.ellipse, top ); } #endregion #region 실행 버튼 클릭시 처리하기 - button_Click(sender, e) /// <summary> /// 실행 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void button_Click(object sender, RoutedEventArgs e) { this.time = 0; Canvas.SetLeft(this.ellipse, 0 ); Canvas.SetTop (this.ellipse, 250); this.timer.Start(); } #endregion } } |
TestProject.zip
■ DispatcherTimer 클래스를 사용해 사각형을 부드럽게 이동시키는 방법을 보여준다. ▶ MainWindow.xaml
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<Window x:Class="TestProject.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Width="800" Height="600" Title="DispatcherTimer 클래스 : 사각형을 부드럽게 이동시키기" FontFamily="나눔고딕코딩" FontSize="16"> <Canvas Name="canvas" Margin="10"> <Rectangle Name="rectangle" Canvas.Left="0" Canvas.Top="200" Width="100" Height="100" Fill="Orange" /> <Button Name="button" Canvas.Right="10" Canvas.Bottom="10" Width="100" Height="30" Content="실행" /> </Canvas> </Window> |
▶ MainWindow.xaml.cs
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using System; using System.Windows; using System.Windows.Controls; using System.Windows.Threading; namespace TestProject { /// <summary> /// 메인 윈도우 /// </summary> public partial class MainWindow : Window { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 타이머 /// </summary> private DispatcherTimer timer; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainWindow() /// <summary> /// 생성자 /// </summary> public MainWindow() { InitializeComponent(); this.timer = new DispatcherTimer(); this.timer.Interval = TimeSpan.FromMilliseconds(100); this.timer.Tick += timer_Tick; this.button.Click += button_Click; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 타이머 틱 처리하기 - timer_Tick(sender, e) /// <summary> /// 타이머 틱 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void timer_Tick(object sender, EventArgs e) { double left = Canvas.GetLeft(this.rectangle); double target = this.canvas.ActualWidth - 5; if(left + this.rectangle.Width > target) { this.timer.Stop(); return; } // 개체 X축 = 개체 X축 + 0.1 * (종착 X축 - 개체 X축) left = left + 0.1 * (target - left); Canvas.SetLeft(this.rectangle, left); } #endregion #region 실행 버튼 클릭시 처리하기 - button_Click(sender, e) /// <summary> /// 실행 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void button_Click(object sender, RoutedEventArgs e) { Canvas.SetLeft(this.rectangle, 0); this.timer.Start(); } #endregion } } |
TestProject.zip
■ DispatcherTimer 클래스의 Tick 이벤트를 사용하는 방법을 보여준다. ▶ MainPage.xaml
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<Page x:Class="TestProject.MainPage" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"> <Grid Background="{StaticResource ApplicationPageBackgroundThemeBrush}"> <TextBlock Name="textBlock" HorizontalAlignment="Center" VerticalAlignment="Center" FontFamily="Lucida Console" FontSize="90" /> </Grid> </Page> |
▶ MainPage.xaml.cs
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using System; using Windows.UI.Xaml; using Windows.UI.Xaml.Controls; namespace TestProject { /// <summary> /// 메인 페이지 /// </summary> public sealed partial class MainPage : Page { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainPage() /// <summary> /// 생성자 /// </summary> public MainPage() { InitializeComponent(); DispatcherTimer timer = new DispatcherTimer(); timer.Interval = TimeSpan.FromSeconds(1); timer.Tick += timer_Tick; timer.Start(); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 타이머 틱 처리하기 - timer_Tick(sender, e) /// <summary> /// 타이머 틱 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void timer_Tick(object sender, object e) { this.textBlock.Text = DateTime.Now.ToString("HH:mm:ss"); } #endregion } } |
TestProject.zip
■ Application 클래스의 DoEvents 정적 메소드를 사용해 시간을 지연하는 방법을 보여준다. ▶ 예제 코드 (C#)
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using System; using System.Windows.Forms; #region 시간 지연하기 - Delay(delayTime) /// <summary> /// 시간 지연하기 /// </summary> /// <param name="delayTime">지연 시간 (단위 : 밀리초)</param> public void Delay(int delayTime) { DateTime currentTime = DateTime.Now; TimeSpan durationTimeSpan = new TimeSpan(0, 0, 0, 0, delayTime); DateTime thresholdTime = currentTime.Add(durationTimeSpan); while(thresholdTime >= currentTime) { Application.DoEvents(); currentTime = DateTime.Now; } } #endregion |
■ Timer 클래스를 사용하는 방법을 보여준다. ▶ 예제 코드 (C#)
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using System; using System.Threading; ... /// <summary> /// 타이머 /// </summary> private Timer timer; /// <summary> /// 시작 시간 /// </summary> private DateTime startTime = DateTime.Now; ... #region 타이머 콜백 처리하기 - TimerCallback(startTime) /// <summary> /// 타이머 콜백 처리하기 /// </summary> /// <param name="startTime">시작 시간</param> private void TimerCallback(DateTime startTime) { TimeSpan elapsedTimeSpan = DateTime.Now - startTime; Console.WriteLine ( "[{0} 스레드] {1}에서 {2}초", Thread.CurrentThread.ManagedThreadId, startTime.ToString("yyyy-MM-dd hh:mm:ss"), elapsedTimeSpan.Seconds ); } #endregion ... this.timer = new Timer(_ => TimerCallback(this.startTime), null, TimeSpan.FromSeconds(1), TimeSpan.FromSeconds(2)); |
■ Timer 클래스를 사용하는 방법을 보여준다. ▶ 예제 코드 (C#)
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using System.Threading; ... /// <summary> /// 잠금자 /// </summary> private static object _locker = new object(); /// <summary> /// 타이머 /// </summary> private Timer timer; ... this.timer = new Timer(TimerCallback, null, 1000, 1000); ... #region 타이머 콜백 처리하기 - TimerCallback(state) /// <summary> /// 타이머 콜백 처리하기 /// </summary> /// <param name="state">상태</param> private void TimerCallback(object state) { lock(_locker) { ... } } #endregion |
■ DispatcherTimer 클래스를 사용하는 방법을 보여준다. ▶ 예제 코드 (XAML)
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<Grid x:Name="grid" Background="White"> <TextBlock x:Name="textBlock" Loaded="textBlock_Loaded" /> </Grid> |
▶ 예제 코드 (C#)
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using System; using System.Windows.Input; using System.Windows.Threading; /// <summary> /// 카운트 /// </summary> private int count = 0; #region 텍스트 블럭 로드시 처리하기 - textBlock_Loaded(sender, e) /// <summary> /// 텍스트 블럭 로드시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> public void textBlock_Loaded(object sender, RoutedEventArgs e) { DispatcherTimer dispatcherTimer = new DispatcherTimer(); dispatcherTimer.Interval = new TimeSpan(0, 0, 0, 0, 100); // 100 밀리초 dispatcherTimer.Tick += dispatcherTimer_Tick; dispatcherTimer.Start(); } #endregion #region 디스패처 타이머 틱 발생시 처리하기 - dispatcherTimer_Tick(sender, e) /// <summary> /// 디스패처 타이머 틱 발생시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> public void dispatcherTimer_Tick(object sender, EventArgs e) { this.textBlock.Text = string.Format("Count : {0}", this.count++); } #endregion |