Question

求一个C#编写的完整的时钟代码，有指针的那种

我需要源代码。。急！
我说的是那只钟要有指针

Answer 1

完整的Clock控件代码

using System;
using System.Drawing;

namespace SC.DesktopCalendar.Clock
{
public class AnalogClock : System.Windows.Forms.UserControl
{
const float PI=3.141592654F;

DateTime dateTime;

float fRadius;
float fCenterX;
float fCenterY;
float fCenterCircleRadius;

float fHourLength;
float fMinLength;
float fSecLength;

float fHourThickness;
float fMinThickness;
float fSecThickness;

bool bDraw5MinuteTicks=true;
bool bDraw1MinuteTicks=true;
float fTicksThickness=1;

Color hrColor=Color.DarkMagenta ;
Color minColor=Color.Green ;
Color secColor=Color.Red ;
Color circleColor=Color.Red;
Color ticksColor=Color.Black;

private System.Windows.Forms.Timer timer1;
private System.ComponentModel.IContainer components;

public AnalogClock()
{
// This call is required by the Windows.Forms Form Designer.
InitializeComponent();

// TODO: Add any initialization after the 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 Component 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()
{
this.components = new System.ComponentModel.Container();
this.timer1 = new System.Windows.Forms.Timer(this.components);
//
// timer1
//
this.timer1.Enabled = true;
this.timer1.Interval = 1000;
this.timer1.Tick += new System.EventHandler(this.timer1_Tick);
//
// AnalogClock
//
this.Name = "AnalogClock";
this.Resize += new System.EventHandler(this.AnalogClock_Resize);
this.Load += new System.EventHandler(this.AnalogClock_Load);
this.Paint += new System.Windows.Forms.PaintEventHandler(this.AnalogClock_Paint);

}
#endregion

private void AnalogClock_Load(object sender, System.EventArgs e)
{
dateTime=DateTime.Now;
this.AnalogClock_Resize(sender,e);
}

private void timer1_Tick(object sender, System.EventArgs e)
{
this.dateTime=DateTime.Now;
this.Refresh();
}

public void Start()
{
timer1.Enabled=true;
this.Refresh();
}

public void Stop()
{
timer1.Enabled=false;
}

private void DrawLine(float fThickness, float fLength, Color color, float fRadians, System.Windows.Forms.PaintEventArgs e)
{
e.Graphics.DrawLine(new Pen( color, fThickness ),
fCenterX - (float)(fLength/9*System.Math.Sin(fRadians)),
fCenterY + (float)(fLength/9*System.Math.Cos(fRadians)),
fCenterX + (float)(fLength*System.Math.Sin(fRadians)),
fCenterY - (float)(fLength*System.Math.Cos(fRadians)));
}

private void DrawPolygon(float fThickness, float fLength, Color color, float fRadians, System.Windows.Forms.PaintEventArgs e)
{

PointF A=new PointF( (float)(fCenterX+ fThickness*2*System.Math.Sin(fRadians+PI/2)),
(float)(fCenterY - fThickness*2*System.Math.Cos(fRadians+PI/2)) );
PointF B=new PointF( (float)(fCenterX+ fThickness*2*System.Math.Sin(fRadians-PI/2)),
(float)(fCenterY - fThickness*2*System.Math.Cos(fRadians-PI/2)) );
PointF C=new PointF( (float)(fCenterX+ fLength*System.Math.Sin(fRadians)),
(float) (fCenterY - fLength*System.Math.Cos(fRadians)) );
PointF D=new PointF( (float)(fCenterX- fThickness*4*System.Math.Sin(fRadians)),
(float)(fCenterY + fThickness*4*System.Math.Cos(fRadians) ));
PointF[] points={A,D,B,C};
e.Graphics.FillPolygon( new SolidBrush(color), points );
}

private void AnalogClock_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
float fRadHr=(dateTime.Hour%12+dateTime.Minute/60F) *30*PI/180;
float fRadMin=(dateTime.Minute)*6*PI/180;
float fRadSec=(dateTime.Second)*6*PI/180;

DrawPolygon(this.fHourThickness, this.fHourLength, hrColor, fRadHr, e);
DrawPolygon(this.fMinThickness, this.fMinLength, minColor, fRadMin, e);
DrawLine(this.fSecThickness, this.fSecLength, secColor, fRadSec, e);

for(int i=0;i<60;i++)
{
if ( this.bDraw5MinuteTicks==true && i%5==0 ) // Draw 5 minute ticks
{
e.Graphics.DrawLine( new Pen( ticksColor, fTicksThickness ),
fCenterX + (float)( this.fRadius/1.50F*System.Math.Sin(i*6*PI/180) ) ,
fCenterY - (float)( this.fRadius/1.50F*System.Math.Cos(i*6*PI/180) ),
fCenterX + (float)( this.fRadius/1.65F*System.Math.Sin(i*6*PI/180) ),
fCenterY - (float)( this.fRadius/1.65F*System.Math.Cos(i*6*PI/180)) );
}
else if ( this.bDraw1MinuteTicks==true ) // draw 1 minute ticks
{
e.Graphics.DrawLine( new Pen( ticksColor, fTicksThickness ),
fCenterX + (float) ( this.fRadius/1.50F*System.Math.Sin(i*6*PI/180) ),
fCenterY - (float) ( this.fRadius/1.50F*System.Math.Cos(i*6*PI/180) ),
fCenterX + (float) ( this.fRadius/1.55F*System.Math.Sin(i*6*PI/180) ),
fCenterY - (float) ( this.fRadius/1.55F*System.Math.Cos(i*6*PI/180) ) );
}
}

//draw circle at center
e.Graphics.FillEllipse( new SolidBrush( circleColor ), fCenterX-fCenterCircleRadius/2, fCenterY-fCenterCircleRadius/2, fCenterCircleRadius, fCenterCircleRadius);
}

private void AnalogClock_Resize(object sender, System.EventArgs e)
{
this.Width = this.Height;
this.fRadius = this.Height/2;
this.fCenterX = this.ClientSize.Width/2;
this.fCenterY = this.ClientSize.Height/2;
this.fHourLength = (float)this.Height/3/1.65F;
this.fMinLength = (float)this.Height/3/1.20F;
this.fSecLength = (float)this.Height/3/1.15F;
this.fHourThickness = (float)this.Height/100;
this.fMinThickness = (float)this.Height/150;
this.fSecThickness = (float)this.Height/200;
this.fCenterCircleRadius = this.Height/50;
this.Refresh();
}

public Color HourHandColor
{
get { return this.hrColor; }
set { this.hrColor=value; }
}

public Color MinuteHandColor
{
get { return this.minColor; }
set { this.minColor=value; }
}

public Color SecondHandColor
{
get { return this.secColor; }
set { this.secColor=value;
this.circleColor=value; }
}

public Color TicksColor
{
get { return this.ticksColor; }
set { this.ticksColor=value; }
}

public bool Draw1MinuteTicks
{
get { return this.bDraw1MinuteTicks; }
set { this.bDraw1MinuteTicks=value; }
}

public bool Draw5MinuteTicks
{
get { return this.bDraw5MinuteTicks; }
set { this.bDraw5MinuteTicks=value; }
}

}
}

Answer 2

c#里有指针吗

追问

那只钟有指针。。。。