nSegmentClockStyle.TimeOnly)
   {
    strTime = _dateTime.ToString("T", DateTimeFormatInfo.InvariantInfo);
   }
   else if(this._clockStyle == SevenSegmentClockStyle.DateOnly)
   {
//设置日期格式
    strTime = _dateTime.ToString("yyyy-MM-dd", DateTimeFormatInfo.InvariantInfo);
   }
   else
   {
    strTime = _dateTime.ToString("yyyy-MM-dd", DateTimeFormatInfo.InvariantInfo) + " " + _dateTime.ToString("T", DateTimeFormatInfo.InvariantInfo);
   }

   SizeF  sizef   = ssd.MeasureString(strTime, Font);
   float  fScale  = Math.Min(destRect.Width  / sizef.Width, destRect.Height / sizef.Height);
   Font   font    = new Font(Font.FontFamily, fScale * Font.SizeInPoints);

   sizef = ssd.MeasureString(strTime, font);
   _clockStringWidth = (int)sizef.Width;
   _clockStringHeight = (int)sizef.Height;

   ssd.DrawString(strTime, font, new SolidBrush(this._clockColor),
    (destRect.Width  - sizef.Width) / 2,
    (destRect.Height - sizef.Height) / 2);
   grfx.Restore(gs);
   return m_Bitmap;
  }
 }
}

//--------------------------（如转载，请保留版权信息）-------------------------//
//   SevenSegmentDisplay.cs 2001 by Charles Petzold                        //
//------------------------改编：朱继山 a3news(AT)hotmail.com  -----------//
using System;
using System.Drawing;
using System.Windows.Forms;

namespace BrawDraw.Com.PhotoFrame.Net.PublicFunctions.Clock
{
//字符绘制的算法
 class SevenSegmentDisplay
 {
  Graphics grfx;
  Brush _brush = Brushes.Black;
  bool _isDrawShadow = true;
  Color _shadowColor = Color.FromArgb(60, Color.White);
  Brush _shadowBrush = null;
  // Indicates what segments are illuminated for all 10 digits

  static byte[,] bySegment = {
         {1, 1, 1, 0, 1, 1, 1},       // 0
         {0, 0, 1, 0, 0, 1, 0},       // 1
         {1, 0, 1, 1, 1, 0, 1},       // 2
         {1, 0, 1, 1, 0, 1, 1},       // 3
         {0, 1, 1, 1, 0, 1, 0},     &nbs

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