Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class MeasureString
public Shared Sub Main
Application.Run(New Form1)
End Sub
End class
Public Class Form1
Private Sub PictureBox1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles PictureBox1.Paint
Dim textArea As SizeF
Dim linePen As Pen
Dim largeFont As Font
Dim fontRatio As Single
Dim ascentSize As Single
Dim descentSize As Single
Dim emSize As Single
Dim cellHeight As Single
Dim internalLeading As Single
Dim externalLeading As Single
e.Graphics.TextRenderingHint = Drawing.Text.TextRenderingHint.AntiAlias
largeFont = New Font("Times New Roman", 96, FontStyle.Regular)
fontRatio = largeFont.Height / largeFont.FontFamily.GetLineSpacing(FontStyle.Regular)
textArea = e.Graphics.MeasureString("AbcJgp", largeFont)
e.Graphics.DrawString("AbcJgp", largeFont, Brushes.Black, 0, 0)
linePen = New Pen(Color.Gray, 1)
linePen.DashStyle = Drawing2D.DashStyle.Dash
ascentSize = largeFont.FontFamily.GetCellAscent(FontStyle.Regular) * fontRatio
descentSize = largeFont.FontFamily.GetCellDescent(FontStyle.Regular) * fontRatio
emSize = largeFont.FontFamily.GetEmHeight(FontStyle.Regular) * fontRatio
cellHeight = ascentSize + descentSize
internalLeading = cellHeight - emSize
externalLeading = (largeFont.FontFamily.GetLineSpacing(FontStyle.Regular) * fontRatio) - cellHeight
e.Graphics.DrawLine(linePen, 0, 0, textArea.Width, 0)
e.Graphics.DrawLine(linePen, 0, textArea.Height, textArea.Width, textArea.Height)
e.Graphics.DrawLine(linePen, 0, ascentSize, textArea.Width, ascentSize)
e.Graphics.DrawLine(linePen, 0, ascentSize + descentSize, textArea.Width, ascentSize + descentSize)
linePen.Dispose()
largeFont.Dispose()
e.Graphics.ResetTransform()
End Sub
End Class
_
Partial Class Form1
Inherits System.Windows.Forms.Form
'Form overrides dispose to clean up the component list.
_
Protected Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing AndAlso components IsNot Nothing Then
components.Dispose()
End If
MyBase.Dispose(disposing)
End Sub
'Required by the Windows Form Designer
Private components As System.ComponentModel.IContainer
'NOTE: The following procedure is required by the Windows Form Designer
'It can be modified using the Windows Form Designer.
'Do not modify it using the code editor.
_
Private Sub InitializeComponent()
Me.PictureBox1 = New System.Windows.Forms.PictureBox
CType(Me.PictureBox1, System.ComponentModel.ISupportInitialize).BeginInit()
Me.SuspendLayout()
'
'PictureBox1
'
Me.PictureBox1.BackColor = System.Drawing.Color.White
Me.PictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
Me.PictureBox1.Location = New System.Drawing.Point(8, 8)
Me.PictureBox1.Name = "PictureBox1"
Me.PictureBox1.Size = New System.Drawing.Size(550, 224)
Me.PictureBox1.TabIndex = 0
Me.PictureBox1.TabStop = False
'
'Form1
'
Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
Me.ClientSize = New System.Drawing.Size(600, 242)
Me.Controls.Add(Me.PictureBox1)
Me.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle
Me.MaximizeBox = False
Me.Name = "Form1"
Me.Text = "Measuring Text"
CType(Me.PictureBox1, System.ComponentModel.ISupportInitialize).EndInit()
Me.ResumeLayout(False)
End Sub
Friend WithEvents PictureBox1 As System.Windows.Forms.PictureBox
End Class