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, 12, false, Color.FromArgb(112, 127, 154), Color.FromArgb(19, 23, 32)); base.OnPaint(e); Graphics g = e.Graphics; g.DrawString("", new Font("微软雅黑", 9, FontStyle.Regular), new SolidBrush(Color.White), 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。