public CircleForm()
{
InitializeComponent();
System.Drawing.Drawing2D.GraphicsPath path = new System.Drawing.Drawing2D.GraphicsPath();
path.AddEllipse(0, 0, 400, 400);
Region region = new Region(path);
pictureBox1.Region = region;
pen = new Pen(CurrentColor, size);
bmp = new Bitmap(pictureBox1.Width, pictureBox1.Height);
circlePen = new CirclePen();
pen.StartCap = pen.EndCap = System.Drawing.Drawing2D.LineCap.Round;
pictureBox1.Image = bmp;
g = Graphics.FromImage(pictureBox1.Image);
g.SetClip(region, System.Drawing.Drawing2D.CombineMode.Replace);
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
g.Clear(Color.White);
pic.Parent = pictureBox1;
pic.BackColor = Color.Transparent;
pic.SizeMode = PictureBoxSizeMode.AutoSize;
pic.BorderStyle = BorderStyle.FixedSingle;
pic.Visible = false;
}
public CircleForm()
{
InitializeComponent();
System.Drawing.Drawing2D.GraphicsPath path = new System.Drawing.Drawing2D.GraphicsPath();
path.AddEllipse(0, 0, 400, 400);
Region region = new Region(path);
pictureBox1.Region = region;
pen = new Pen(CurrentColor, size);
bmp = new Bitmap(pictureBox1.Width, pictureBox1.Height);
circlePen = new CirclePen();
pen.StartCap = pen.EndCap = System.Drawing.Drawing2D.LineCap.Round;
pictureBox1.Image = bmp;
g = Graphics.FromImage(pictureBox1.Image);
g.SetClip(region, System.Drawing.Drawing2D.CombineMode.Replace);
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
g.Clear(Color.White);
}