using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; public class Form1 : Form { protected override void OnPaint(PaintEventArgs e) { Graphics g = e.Graphics; g.FillRectangle(Brushes.White, this.ClientRectangle); FontFamily ff = new FontFamily("Times New Roman"); float emSizeInGU = 24f; Font f = new Font(ff, emSizeInGU); int emSizeInDU = ff.GetEmHeight(FontStyle.Regular); int ascentInDU = ff.GetCellAscent(FontStyle.Regular); int descentInDU = ff.GetCellDescent(FontStyle.Regular); int lineSpacingInDU = ff.GetLineSpacing(FontStyle.Regular); float ascentInGU = ascentInDU * (emSizeInGU / emSizeInDU); float descentInGU = descentInDU * (emSizeInGU / emSizeInDU); float lineSpacingInGU = lineSpacingInDU * (emSizeInGU / emSizeInDU); PointF textOrigin = new PointF(20, 20); PointF nextLineOrigin = new PointF(textOrigin.X,textOrigin.Y + f.Height); g.DrawString("AxgQ", f, Brushes.Black, textOrigin); g.DrawString("AxgQ", f, Brushes.Black, nextLineOrigin); int lineLen = 100; g.DrawLine(Pens.Blue,textOrigin,new PointF(textOrigin.X + lineLen, textOrigin.Y)); g.DrawLine(Pens.Red,nextLineOrigin,new PointF(nextLineOrigin.X + lineLen, nextLineOrigin.Y)); PointF p = new PointF(textOrigin.X,textOrigin.Y + lineSpacingInGU); g.DrawLine(Pens.Blue, p,new PointF(p.X + lineLen, p.Y)); p = new PointF(nextLineOrigin.X,nextLineOrigin.Y + lineSpacingInGU); g.DrawLine(Pens.Red, p,new PointF(p.X + lineLen, p.Y)); p = new PointF(textOrigin.X,textOrigin.Y + lineSpacingInGU - ascentInGU); g.DrawLine(Pens.Blue, p,new PointF(p.X + lineLen, p.Y)); p = new PointF(nextLineOrigin.X, nextLineOrigin.Y +lineSpacingInGU - ascentInGU); g.DrawLine(Pens.Red, p, new PointF(p.X + lineLen, p.Y)); p = new PointF(textOrigin.X,textOrigin.Y + lineSpacingInGU + descentInGU); g.DrawLine(Pens.Blue, p,new PointF(p.X + lineLen, p.Y)); p = new PointF(nextLineOrigin.X,nextLineOrigin.Y + lineSpacingInGU + descentInGU); g.DrawLine(Pens.Red, p,new PointF(p.X + lineLen, p.Y)); } public static void Main() { Application.Run(new Form1()); } }