Private Sub ShowLineAndAlignment(ByVal e As PaintEventArgs)

    ' Construct a new Rectangle.
    Dim displayRectangle _
        As New Rectangle(New Point(40, 40), New Size(80, 80))

    ' Construct two new StringFormat objects
    Dim format1 As New StringFormat(StringFormatFlags.NoClip)
    Dim format2 As New StringFormat(format1)

    ' Set the LineAlignment and Alignment properties for
    ' both StringFormat objects to different values.
    format1.LineAlignment = StringAlignment.Near
    format1.Alignment = StringAlignment.Center
    format2.LineAlignment = StringAlignment.Center
    format2.Alignment = StringAlignment.Far

    ' Draw the bounding rectangle and a string for each
    ' StringFormat object.
    e.Graphics.DrawRectangle(Pens.Black, displayRectangle)
    e.Graphics.DrawString("Showing Format1", Me.Font, Brushes.Red, _
        RectangleF.op_Implicit(displayRectangle), format1)
    e.Graphics.DrawString("Showing Format2", Me.Font, Brushes.Red, _
        RectangleF.op_Implicit(displayRectangle), format2)
End Sub

' 导入命名空间
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
Imports System.Math

public class MeasureCharacterRange
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class

public class Form1
  Inherits System.Windows.Forms.Form

  Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
        Dim txt As String = "www.java2s.com"
        Dim the_font As New Font("Times New Roman", 50, FontStyle.Bold, GraphicsUnit.Pixel)
        Dim layout_rect As New RectangleF(0, 0, Me.ClientSize.Width, Me.ClientSize.Height)
        Dim string_format As New StringFormat
        string_format.LineAlignment = StringAlignment.Center
        string_format.Alignment = StringAlignment.Center

        e.Graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAliasGridFit

        Dim character_ranges(txt.Length - 1) As CharacterRange
        For i As Integer = 0 To txt.Length - 1
            character_ranges(i) = New CharacterRange(i, 1)
        Next i

        string_format.SetMeasurableCharacterRanges(character_ranges)

        Dim character_regions() As Region = e.Graphics.MeasureCharacterRanges(txt, the_font, layout_rect, string_format)

        For Each rgn As Region In character_regions
            Dim character_bounds As RectangleF = rgn.GetBounds(e.Graphics)
            Dim character_rect As Rectangle = Rectangle.Round(character_bounds)

            e.Graphics.DrawRectangle(Pens.White, character_rect)
        Next rgn

        e.Graphics.DrawString(txt, the_font, Brushes.Black, layout_rect, string_format)

  End Sub

  Public Sub New()
   
    MyBase.New()
    Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
    Me.ClientSize = New System.Drawing.Size(292, 273)
    Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen

  End Sub

End Class