C#自定义控件六高级时钟
效果图：
接着上次的简单时钟，这次要高级多了，算法更正，可以自定义时钟分钟秒钟刻度等颜色，与系统时钟对应，随你怎么改，源代码具有很高的参考价值。
第一步：添加用户控件，命名为myNewClock
第二步：定义变量，要用到时钟，画布等
private Timer myTimer;//定义时钟，定时重新绘制
private Graphics g;//创建画布
private Pen pen;//创建画笔
private int width;//画布高度
private int height;//画布宽度
第三步：定义属性，可以自由增加
Color hourColor = Color.Red;
/// <summary>
/// 时钟颜色
/// </summary>
[CategoryAttribute("颜色"), Description("时钟颜色")]
public Color HourColor
{
get { return hourColor; }
set { hourColor=value; }
}
Color minuteColor = Color.Green;
/// <summary>
/// 分钟颜色
/// </summary>
[CategoryAttribute("颜色"), Description("分钟颜色")]
public Color MinuteColor
{
get { return minuteColor; }
set { minuteColor = value; }
}
Color secondColor = Color.Blue;
/// <summary>
/// 秒钟颜色
/// </summary>
[CategoryAttribute("颜色"), Description("秒钟颜色")]
public Color SecondColor
{
get { return secondColor; }
set { secondColor = value; }
}
Color bigScaleColor = Color.DarkGreen;
/// <summary>
/// 大刻度颜色
/// </summary>
[CategoryAttribute("颜色"), Description("大刻度颜色")]
public Color BigScaleColor
{
get { return bigScaleColor; }
set { bigScaleColor = value; }
}
Color litterScaleColor = Color.Olive;
/// <summary>
/// 小刻度颜色
/// </summary>
[CategoryAttribute("颜色"), Description("小刻度颜色")]
public Color LitterScaleColor
{
get { return litterScaleColor; }
set { litterScaleColor = value; }
}
Color textColor = Color.White;
/// <summary>
/// 刻度值颜色
/// </summary>
[CategoryAttribute("颜色"), Description("刻度值颜色")]
public Color TextColor
{
get { return textColor; }
set { textColor = value; }
}
Color bigBackColor = Color.Black;
/// <summary>
/// 外圆背景色
/// </summary>
[CategoryAttribute("颜色"), Description("外圆背景颜色")]
public Color BigBackColor
{
get { return bigBackColor; }
set { bigBackColor = value; }
}
Color litterBackColor = Color.White;
/// <summary>
/// 内圆颜色
/// </summary>
[CategoryAttribute("颜色"), Description("内圆颜色")]
public Color LitterBackColor
{
get { return litterBackColor; }
set { litterBackColor = value; }
}
第四步：重写OnPaint方法
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
g = e.Graphics;
g.SmoothingMode = SmoothingMode.AntiAlias; //
g.SmoothingMode = SmoothingMode.HighQuality;//绘图模式 默认为粗糙模式，将会出现锯齿！
width = this.Width;//时钟宽度
height = this.Height;//时钟高度
int x1 = 0;//开始绘制时钟起点X坐标
int y1 = 0;//开始绘制时钟起点Y坐标
/*------------------------------------------------------------------------------
计算：整点刻度12个，每个刻度偏移角度为360/12 = 30 度 及为小时偏移角度
分秒刻度为60个，每个刻度偏移角度为360/60 = 6 度 及为分、秒偏移角度
--------------------------------------------------------------------------------*/
g.FillEllipse(new SolidBrush( bigBackColor), x1 + 2, y1 + 2, width - 4, height - 4); //外圆
pen = new Pen(new SolidBrush(litterBackColor), 2);
g.DrawEllipse(pen, x1 + 7, y1 + 7, width - 13, height - 13);// 内圆
g.TranslateTransform(x1 + (width / 2), y1 + (height / 2));//重新设置坐标原点
g.FillEllipse(Brushes.White, -5, -5, 10, 10);//绘制表盘中心
for (int x = 0; x < 60; x++) //小刻度
{
g.FillRectangle(new SolidBrush(litterScaleColor), new Rectangle(-2, (System.Convert.ToInt16(height - 8) / 2 - 2) * (-1), 3, 10));
g.RotateTransform(6);//偏移角度
}
for (int i = 12; i > 0; i--) //大刻度
{
string myString = i.ToString();
//绘制整点刻度