精简后,就其实一点,只要有paint事件的组件,都可画圆角,没有的外面套一个panel就行了。
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Drawing.Drawing2D; using System.Linq; using System.Text; using System.Windows.Forms; namespace Gid_1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Draw(Rectangle rectangle, Graphics g, int _radius, bool cusp, Color begin_color, Color end_color) { int span = 2; //抗锯齿 g.SmoothingMode = SmoothingMode.AntiAlias; //渐变填充 LinearGradientBrush myLinearGradientBrush = new LinearGradientBrush(rectangle, begin_color, end_color, LinearGradientMode.Vertical); //画尖角 if (cusp) { span = 10; PointF p1 = new PointF(rectangle.Width - 12, rectangle.Y + 10); PointF p2 = new PointF(rectangle.Width - 12, rectangle.Y + 30); PointF p3 = new PointF(rectangle.Width, rectangle.Y + 20); PointF[] ptsArray = { p1, p2, p3 }; g.FillPolygon(myLinearGradientBrush, ptsArray); } //填充 g.FillPath(myLinearGradientBrush, DrawRoundRect(rectangle.X, rectangle.Y, rectangle.Width - span, rectangle.Height-1, _radius)); } public static GraphicsPath DrawRoundRect(int x, int y, int width, int height, int radius) { //四边圆角 GraphicsPath gp = new GraphicsPath(); gp.AddArc(x, y, radius, radius, 180, 90); gp.AddArc(width - radius, y, radius, radius, 270, 90); gp.AddArc(width - radius, height - radius, radius, radius, 0, 90); gp.AddArc(x, height - radius, radius, radius, 90, 90); gp.CloseAllFigures(); return gp; } private void panel1_Paint(object sender, PaintEventArgs e) { Draw(e.ClipRectangle, e.Graphics, 18,true, Color.FromArgb(90, 143, 0), Color.FromArgb(41, 67, 0)); base.OnPaint(e); Graphics g = e.Graphics; g.DrawString("其实我是个Panel", new Font("微软雅黑", 9, FontStyle.Regular), new SolidBrush(Color.White), new PointF(10, 10)); } private void panel2_Paint(object sender, PaintEventArgs e) { Draw(e.ClipRectangle, e.Graphics, 18, false, Color.FromArgb(113, 113, 113), Color.FromArgb(0, 0, 0)); base.OnPaint(e); Graphics g = e.Graphics; g.DrawString("其实我是个Panel", new Font("微软雅黑", 9, FontStyle.Regular), new SolidBrush(Color.White), new PointF(10, 10)); } private void button1_Paint(object sender, PaintEventArgs e) { Draw(e.ClipRectangle, e.Graphics, 18, false, Color.FromArgb(0, 122, 204), Color.FromArgb(8, 39, 57)); base.OnPaint(e); Graphics g = e.Graphics; g.DrawString("其实我是个按钮", new Font("微软雅黑", 9, FontStyle.Regular), new SolidBrush(Color.White), new PointF(10, 10)); } private void label1_Paint(object sender, PaintEventArgs e) { Draw(e.ClipRectangle, e.Graphics, 18, false, Color.FromArgb(210, 210, 210), Color.FromArgb(242, 242, 242)); base.OnPaint(e); Graphics g = e.Graphics; g.DrawString("其实我是Label", new Font("微软雅黑", 9, FontStyle.Regular), new SolidBrush(Color.Black), new PointF(10, 10)); } } }
int _radius 圆的度数
bool cusp 画不画尖角
Color begin_color, Color end_color 渐变色的起始和结束颜色
private void Draw(Rectangle rectangle, Graphics g, int _radius, bool cusp, Color begin_color, Color end_color)
{.......}
圆角按钮要设置
否则4个角还有颜色。
皆可画圆。
本文转自:http://www.cnblogs.com/qiaoke/p/6124693.html