C#绘制圆形时钟
本文由作者参考部分案例后加以修改完成:
参考链接如下:
http://blog.csdn.net/xuemoyao/article/details/8001113
http://wenku.baidu.com/view/1221d6522f60ddccda38a0e7
(1) 最终效果
(2)程序实现分析:
选用Paint事件进行实现绘制,然后加一个定时器设定为1000毫秒更新一次。
(3)具体方法
在Form窗体(设置大小为300*300),中添加Time1,属性Enabled改为true,Interval设置为1000
然后在Designer.cs中Form1的属性定义下添加
this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);
在Form1.cs中Form1类下添加函数
Private void Form_Paint(Object Sender,PaintEventArgs e)
{
Graphics g=e.Graphics; //定义g为该窗体控件的画布
int r=100;
// 绘制数字时钟
Rectangle r1=new Rectangle(50,10,200,20);
//参数分别为左上角矩形坐标,宽度和长度
g.FillRectangle(Brushes.Chocolate,r1);//填充颜色
int ss=DateTime.Now.Second;
int mm=DateTime.Now.Minute;
int hh=DateTime.Now.Hour;
String s=Convert.ToString(ss);
String m=Convert.ToString(mm);
String h=Convert.ToString(hh);
if(ss>=0&&ss<=9)
s=”0”+s;
if(mm>=0&&mm<=9)
m=”0”+m;
if(hh>=0&&hh<=9)
h=”0”+h;
Font f1=new Font(“宋体”,12,FontStyle.Bold);
StringFormat sf1=new StringFormat();
SolidBrush s1=new SolidBrush(Color.White);
g.Drawstring(“当前时间”+h+”:”+m+”:”+s,f1,s1,r1,sf1);
g.DrawString("当前时间 " + h + ":" + m + ":" + s, f1, s1, r1, sf1);
//绘制圆形轮廓
g.FillEllipse(Brushes.White,50,50,200,200)
g.DrawEllipse(New Pen(Color.Red,2),46,46,208,208);
g.DrawEllipse(new Pen(Color.DarkGray, 1), 50,50, 200, 200);
//绘制数字刻度
g.ResetTransform();
g.TranslateTransform(150, 150); //重新定位坐标
Font drawFont = new Font("Arial", 12);
SolidBrush drawBrush = new SolidBrush(Color.Black);
e.Graphics.DrawString("6", drawFont, drawBrush,-7,70);
e.Graphics.DrawString("12", drawFont, drawBrush, -9, -80);
e.Graphics.DrawString("3", drawFont, drawBrush, 70, -7);
e.Graphics.DrawString("9", drawFont, drawBrush, -80, -7);
//绘制刻度
for (int z = 0; z < 60; z++)
{
g.SmoothingMode=System.Drawing.Drawing2D
.SmoothingMode.HighQuality;
//使画出的指针更平滑、高质量
g.ResetTransform;
g.TranslateTransform(150,150); //更改坐标原点
g.RotateYransform(z*5); //旋转,每一秒旋转6度
if(z%5==0)
g=DrawLine(new Pen(Color.Black,3.0f).r-12,0,r-5,0);
//小时刻度
else
g.DrawLine(new Pen(Color.Black,1.5f),r-8,0,r-5,0);
//分钟标准刻度
}
//绘制秒针
g.ResetTransform(); //恢复默认状态
g.TranslateTransform(150,150);
g.RotateTransform(ss*6+270);
//以水平线为x轴,从垂直上方开始旋转,每次旋转6度。
Pen secPen=new Pen(Color.Red,1);
secPen.StartCap=System.Drawing.Drawing2D.LineCap.RoundAnchor;
//画线,从圆点开始
secPen.EndCap=System.Drawing.Drawing2D.LineCap.ArrowAnchor;
//画线,结束于箭头
g.DrawLine(secPen,0,0,65,0);//65表示线的长度
//绘制分针
g.ResetTransform();
g.TranslateTransform(150,150);
g.RotateTransform(mm*6+270);
Pen minPen=new Pen(Color.Blue,2);
minPen.StartCap = System.Drawing.Drawing2D.LineCap.RoundAnchor;
minPen.EndCap = System.Drawing.Drawing2D.LineCap.ArrowAnchor;
g.DrawLine(minPen, 0, 0,50 , 0);
//绘制时针
g.ResetTransform();
g.TranslateTransform(150,150);
g.RotateTransform(hh*30+mm*1/2+270);
Pen hourPen = new Pen(Color.Black,3);
hourPen.EndCap = System.Drawing.Drawing2D.LineCap.ArrowAnchor;
g.DrawLine(hourPen, 0, 0, 35, 0);
}
time1的响应事件
private void timer1_Tick(object sender, EventArgs e)
{
Invalidate();
}
作者: 水面一一举风荷
出处: http://www.cnblogs.com/Lotusmoon/
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