2D Graphics C#

using System;
using System.Drawing;
using System.Drawing.Text;
using System.Windows.Forms;
   
class BoldAndItalicTighter: Form
{
     public static void Main()
     {
          Application.Run(new BoldAndItalicTighter());
     }
     public BoldAndItalicTighter()
     {
          Text = "Bold and Italic (Tighter)";
          Font = new Font("Times New Roman", 24);
          ResizeRedraw = true; 
     }
     protected override void OnPaint(PaintEventArgs pea)
     {
          DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
     }     
     protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
     {
          string str        = "text.";
          Brush        brush       = new SolidBrush(clr);
          Font         fontRegular = Font;
          Font         fontBold    = new Font(fontRegular, FontStyle.Bold);
          Font         fontItalic  = new Font(fontRegular, FontStyle.Italic);
          PointF       ptf         = new PointF(0, 0);
          StringFormat strfmt      = StringFormat.GenericTypographic;
          strfmt.FormatFlags      |= StringFormatFlags.MeasureTrailingSpaces;
   
          grfx.DrawString(str, fontRegular, brush, ptf, strfmt);
     }
}