This is a quick one, you may want to fine tune things and optimize quite a few details..
class RoundedButton : Button
{
GraphicsPath GetRoundPath(RectangleF Rect, int radius)
{
float r2 = radius / 2f;
GraphicsPath GraphPath = new GraphicsPath();
GraphPath.AddArc(Rect.X, Rect.Y, radius, radius, 180, 90);
GraphPath.AddLine(Rect.X + r2, Rect.Y, Rect.Width - r2, Rect.Y);
GraphPath.AddArc(Rect.X + Rect.Width - radius, Rect.Y, radius, radius, 270, 90);
GraphPath.AddLine(Rect.Width, Rect.Y + r2, Rect.Width, Rect.Height - r2);
GraphPath.AddArc(Rect.X + Rect.Width - radius,
Rect.Y + Rect.Height - radius, radius, radius, 0, 90);
GraphPath.AddLine(Rect.Width - r2, Rect.Height, Rect.X + r2, Rect.Height);
GraphPath.AddArc(Rect.X, Rect.Y + Rect.Height - radius, radius, radius, 90, 90);
GraphPath.AddLine(Rect.X, Rect.Height - r2, Rect.X, Rect.Y + r2);
GraphPath.CloseFigure();
return GraphPath;
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
RectangleF Rect = new RectangleF(0, 0, this.Width, this.Height);
using (GraphicsPath GraphPath = GetRoundPath(Rect, 50))
{
this.Region = new Region(GraphPath);
using (Pen pen = new Pen(Color.CadetBlue, 1.75f))
{
pen.Alignment = PenAlignment.Inset;
e.Graphics.DrawPath(pen, GraphPath);
}
}
}
}
Obviously, since we have a class we can cache the GraphicsPath
in a class variable. And of course you pick the color..