使用以下代码完成:
soStyle style = new soStyle();
style.SymbolStyle = 1110;
style.SymbolSize = 200;
style.PenColor = (uint)ColorTranslator.ToOle(Color.Red);
soSymbolLib symbolLib = axSuperWorkspace1.Resources.SymbolLib;
Graphics graphics = Graphics.FromHwnd(pictureBox1.Handle);
IntPtr ptr = graphics.GetHdc();
symbolLib.Draw((Int32)ptr, pictureBox1.Width / 2, pictureBox1.Height / 2, style);