VB.NET Graphics.MeasureString方法代碼示例

Private Sub MeasureStringMin(ByVal e As PaintEventArgs)

    ' Set up string.
    Dim measureString As String = "Measure String"
    Dim stringFont As New Font("Arial", 16)

    ' Measure string.
    Dim stringSize As New SizeF
    stringSize = e.Graphics.MeasureString(measureString, stringFont)

    ' Draw rectangle representing size of string.
    e.Graphics.DrawRectangle(New Pen(Color.Red, 1), 0.0F, 0.0F, _
    stringSize.Width, stringSize.Height)

    ' Draw string to screen.
    e.Graphics.DrawString(measureString, stringFont, Brushes.Black, _
    New PointF(0, 0))
End Sub

Private Sub MeasureStringSizeF(ByVal e As PaintEventArgs)

    ' Set up string.
    Dim measureString As String = "Measure String"
    Dim stringFont As New Font("Arial", 16)

    ' Set maximum layout size.
    Dim layoutSize As New SizeF(200.0F, 50.0F)

    ' Measure string.
    Dim stringSize As New SizeF
    stringSize = e.Graphics.MeasureString(measureString, stringFont, _
    layoutSize)

    ' Draw rectangle representing size of string.
    e.Graphics.DrawRectangle(New Pen(Color.Red, 1), 0.0F, 0.0F, _
    stringSize.Width, stringSize.Height)

    ' Draw string to screen.
    e.Graphics.DrawString(measureString, stringFont, Brushes.Black, _
    New PointF(0, 0))
End Sub

Private Sub MeasureStringWidth(ByVal e As PaintEventArgs)

    ' Set up string.
    Dim measureString As String = "Measure String"
    Dim stringFont As New Font("Arial", 16)

    ' Set maximum width of string.
    Dim stringWidth As Integer = 200

    ' Measure string.
    Dim stringSize As New SizeF
    stringSize = e.Graphics.MeasureString(measureString, _
    stringFont, stringWidth)

    ' Draw rectangle representing size of string.
    e.Graphics.DrawRectangle(New Pen(Color.Red, 1), 0.0F, 0.0F, _
    stringSize.Width, stringSize.Height)

    ' Draw string to screen.
    e.Graphics.DrawString(measureString, stringFont, Brushes.Black, _
    New PointF(0, 0))
End Sub

Private Sub MeasureStringPointFFormat(ByVal e As PaintEventArgs)

    ' Set up string.
    Dim measureString As String = "Measure String"
    Dim stringFont As New Font("Arial", 16)

    ' Set point for upper-left corner of string.
    Dim x As Single = 50.0F
    Dim y As Single = 50.0F
    Dim ulCorner As New PointF(x, y)

    ' Set string format.
    Dim newStringFormat As New StringFormat
    newStringFormat.FormatFlags = StringFormatFlags.DirectionVertical

    ' Measure string.
    Dim stringSize As New SizeF
    stringSize = e.Graphics.MeasureString(measureString, stringFont, _
    ulCorner, newStringFormat)

    ' Draw rectangle representing size of string.
    e.Graphics.DrawRectangle(New Pen(Color.Red, 1), x, y, _
    stringSize.Width, stringSize.Height)

    ' Draw string to screen.
    e.Graphics.DrawString(measureString, stringFont, Brushes.Black, _
    ulCorner, newStringFormat)
End Sub

Private Sub MeasureStringSizeFFormat(ByVal e As PaintEventArgs)

    ' Set up string.
    Dim measureString As String = "Measure String"
    Dim stringFont As New Font("Arial", 16)

    ' Set maximum layout size.
    Dim layoutSize As New SizeF(100.0F, 200.0F)

    ' Set string format.
    Dim newStringFormat As New StringFormat
    newStringFormat.FormatFlags = StringFormatFlags.DirectionVertical

    ' Measure string.
    Dim stringSize As New SizeF
    stringSize = e.Graphics.MeasureString(measureString, stringFont, _
    layoutSize, newStringFormat)

    ' Draw rectangle representing size of string.
    e.Graphics.DrawRectangle(New Pen(Color.Red, 1), 0.0F, 0.0F, _
    stringSize.Width, stringSize.Height)

    ' Draw string to screen.
    e.Graphics.DrawString(measureString, stringFont, Brushes.Black, _
    New PointF(0, 0), newStringFormat)
End Sub

Private Sub MeasureStringWidthFormat(ByVal e As PaintEventArgs)

    ' Set up string.
    Dim measureString As String = "Measure String"
    Dim stringFont As New Font("Arial", 16)

    ' Set maximum width of string.
    Dim stringWidth As Integer = 100

    ' Set string format.
    Dim newStringFormat As New StringFormat
    newStringFormat.FormatFlags = StringFormatFlags.DirectionVertical

    ' Measure string.
    Dim stringSize As New SizeF
    stringSize = e.Graphics.MeasureString(measureString, stringFont, _
    stringWidth, newStringFormat)

    ' Draw rectangle representing size of string.
    e.Graphics.DrawRectangle(New Pen(Color.Red, 1), 0.0F, 0.0F, _
    stringSize.Width, stringSize.Height)

    ' Draw string to screen.
    e.Graphics.DrawString(measureString, stringFont, Brushes.Black, _
    New PointF(0, 0), newStringFormat)
End Sub

Private Sub MeasureStringSizeFFormatInts(ByVal e As PaintEventArgs)

    ' Set up string.
    Dim measureString As String = "Measure String"
    Dim stringFont As New Font("Arial", 16)

    ' Set maximum layout size.
    Dim layoutSize As New SizeF(100.0F, 200.0F)

    ' Set string format.
    Dim newStringFormat As New StringFormat
    newStringFormat.FormatFlags = StringFormatFlags.DirectionVertical

    ' Measure string.
    Dim charactersFitted As Integer
    Dim linesFilled As Integer
    Dim stringSize As New SizeF
    stringSize = e.Graphics.MeasureString(measureString, stringFont, _
    layoutSize, newStringFormat, charactersFitted, linesFilled)

    ' Draw rectangle representing size of string.
    e.Graphics.DrawRectangle(New Pen(Color.Red, 1), 0.0F, 0.0F, _
    stringSize.Width, stringSize.Height)

    ' Draw string to screen.
    e.Graphics.DrawString(measureString, stringFont, Brushes.Black, _
    New PointF(0, 0), newStringFormat)

    ' Draw output parameters to screen.
    Dim outString As String = "chars " & charactersFitted & _
    ", lines " & linesFilled
    e.Graphics.DrawString(outString, stringFont, Brushes.Black, _
    New PointF(100, 0))
End Sub

' 導入命名空間
Imports System
Imports System.Drawing
Imports System.Collections
Imports System.ComponentModel
Imports System.Windows.Forms
Imports System.Globalization


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

Public Class Form1
    Inherits System.Windows.Forms.Form

    Private Sub Form1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint
        Dim g As Graphics = e.Graphics

        Dim s As String = "a multi-line string:" & vbCrLf & "line 2" & vbCrLf & "line 3"

        Dim layoutRect As RectangleF = RectangleF.op_Implicit(ClientRectangle)
        g.DrawString(s, Me.Font, Brushes.Black, layoutRect)
        Dim size As SizeF = g.MeasureString(s, Me.Font, layoutRect.Size)
        g.DrawRectangle(Pens.Black, 0, 0, size.Width, size.Height)

    End Sub


    Public Sub New()
        MyBase.New()
        InitializeComponent()
    End Sub

    Private components As System.ComponentModel.IContainer

    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(20, 60)
        Me.Name = "Form1"
        Me.Text = "Form1"
        Me.Font = New System.Drawing.Font("Microsoft Sans Serif", 14.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
    End Sub

End Class