using System; using System.Drawing; using System.Windows.Forms; class DigitalClock: Form { public static void Main() { Application.Run(new DigitalClock()); } public DigitalClock() { ResizeRedraw = true; Timer timer = new Timer(); timer.Tick += new EventHandler(TimerOnTick); timer.Interval = 1000; timer.Start(); } private void TimerOnTick(object obj, EventArgs ea) { Invalidate(); } protected override void OnPaint(PaintEventArgs pea) { Graphics grfx = pea.Graphics; DateTime dt = DateTime.Now; string strTime = dt.ToString("d") + " " + dt.ToString("T"); SizeF sizef = grfx.MeasureString(strTime, Font); float fScale = Math.Min(ClientSize.Width / sizef.Width, ClientSize.Height / sizef.Height); Font font = new Font(Font.FontFamily, fScale * Font.SizeInPoints); StringFormat strfmt = new StringFormat(); strfmt.Alignment = strfmt.LineAlignment = StringAlignment.Center; grfx.DrawString(strTime, font, new SolidBrush(ForeColor), ClientRectangle, strfmt); } }