学步园

简单的彩虹笔刷范例,用WPF还真好玩

LinearGradientBrush就可以做线性的渐层

RadialGradientBrush可以做椭圆的渐层

只要将画刷设定到Background属性,就可以在Window填满下列效果了

using System;<br /> using System.Windows;<br /> using System.Windows.Input;<br /> using System.Windows.Media;<br /> using System.Reflection;</p> <p>namespace Cloud.GradiateTheBrush<br /> {<br /> public class GradiateTheBrush : Window<br /> {<br /> [STAThread]<br /> public static void Main()<br /> {<br /> Application app = new Application();<br /> app.Run(new GradiateTheBrush());<br /> }</p> <p> public GradiateTheBrush()<br /> {<br /> this.Title = "Gradiate Brush";</p> <p> //LinearGradientBrush brush = new LinearGradientBrush();<br /> //brush.StartPoint = new Point(0, 0);<br /> //brush.EndPoint = new Point(1, 0);<br /> RadialGradientBrush brush = new RadialGradientBrush();<br /> this.Background = brush;</p> <p> brush.GradientStops.Add(new GradientStop(Colors.Red, 0));<br /> brush.GradientStops.Add(new GradientStop(Colors.Orange, 0.17));<br /> brush.GradientStops.Add(new GradientStop(Colors.Yellow, 0.33));<br /> brush.GradientStops.Add(new GradientStop(Colors.Green, 0.5));<br /> brush.GradientStops.Add(new GradientStop(Colors.Blue, 0.67));<br /> brush.GradientStops.Add(new GradientStop(Colors.Indigo, 0.84));<br /> brush.GradientStops.Add(new GradientStop(Colors.Violet, 1));<br /> }</p> <p> }<br /> }