VB.Net/2D/Wmf

Материал из VB Эксперт
Версия от 12:42, 26 мая 2010; Admin (обсуждение | вклад) (1 версия)
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Create wmf file and draw to it

Imports System
Imports System.Windows.Forms
Imports System.Collections.Generic
Imports System.ruponentModel
Imports System.Drawing.Imaging
Imports System.Drawing
Public Class MainClass
   Shared Sub Main()
        Const WID As Integer = 200
        Dim file_name As String = "test.wmf"
        
        Dim gr As Graphics
        gr = Graphics.FromImage(new Bitmap(100,100))
        " Make a Graphics object so we can use its hDC as a reference.
        Dim hdc As IntPtr = gr.GetHdc
        " Make the Metafile, using the reference hDC.
        Dim bounds As New RectangleF(0, 0, WID, WID)
        Dim mf As New Metafile(file_name, hdc, _
            bounds, MetafileFrameUnit.Pixel)
        gr.ReleaseHdc(hdc)
        " Make a Graphics object and draw.
        gr = Graphics.FromImage(mf)
        gr.PageUnit = GraphicsUnit.Pixel
        gr.Clear(Color.White)
        gr.DrawEllipse(Pens.Red, bounds)
        gr.DrawLine(Pens.Blue, 0, 0, WID, WID)
        gr.DrawLine(Pens.Blue, WID, 0, 0, WID)
        " Close the metafile and free resources.
        gr.Dispose()
        mf.Dispose()

   End Sub 
End Class


Read from wmf file and display it on a form

Imports System
Imports System.Windows.Forms
Imports System.Collections.Generic
Imports System.ruponentModel
Imports System.Drawing.Imaging
Imports System.Drawing
Public Class MainClass
   Shared Sub Main()
       Dim form1 As Form1 =  new Form1()
       Application.Run(form1)
   End Sub 
End Class
Public Class Form1
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Const WID As Integer = 200
        Dim file_name As String = "test.wmf"
        
        " Reload the metafile and copy it into a Bitmap.
        Dim mf As Metafile = New Metafile(file_name)
        Dim bm As New Bitmap(WID, WID)
        Dim gr As Graphics = Graphics.FromImage(bm)
        Dim dest_bounds As New RectangleF(0, 0, WID, WID)
        Dim source_bounds As New RectangleF(0, 0, WID + 1, WID + 1)
        gr.DrawImage(mf, bounds, source_bounds, GraphicsUnit.Pixel)
        
        picOrig.SizeMode = PictureBoxSizeMode.AutoSize
        picOrig.Image = bm
        gr.Dispose()
        mf.Dispose()
    End Sub
End Class

<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _
Partial Public Class Form1
    Inherits System.Windows.Forms.Form
    "Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected Overloads 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.ruponentModel.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.
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Me.picSmall = New System.Windows.Forms.PictureBox
        Me.picOrig = New System.Windows.Forms.PictureBox
        CType(Me.picSmall, System.ruponentModel.ISupportInitialize).BeginInit()
        CType(Me.picOrig, System.ruponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        "
        "picSmall
        "
        Me.picSmall.Location = New System.Drawing.Point(64, 8)
        Me.picSmall.Name = "picSmall"
        Me.picSmall.Size = New System.Drawing.Size(32, 24)
        Me.picSmall.TabIndex = 3
        Me.picSmall.TabStop = False
        "
        "picOrig
        "
        Me.picOrig.Location = New System.Drawing.Point(8, 8)
        Me.picOrig.Name = "picOrig"
        Me.picOrig.Size = New System.Drawing.Size(48, 56)
        Me.picOrig.TabIndex = 2
        Me.picOrig.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(326, 215)
        Me.Controls.Add(Me.picSmall)
        Me.Controls.Add(Me.picOrig)
        Me.Name = "Form1"
        Me.Text = "MakeMetafile"
        CType(Me.picSmall, System.ruponentModel.ISupportInitialize).EndInit()
        CType(Me.picOrig, System.ruponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)
    End Sub
    Friend WithEvents picSmall As System.Windows.Forms.PictureBox
    Friend WithEvents picOrig As System.Windows.Forms.PictureBox
End Class


Save an Image to Wmf file format

Imports System
Imports System.Windows.Forms
Imports System.Collections.Generic
Imports System.ruponentModel
Imports System.Drawing.Imaging
Imports System.Drawing
Public Class MainClass
   Shared Sub Main()
        Dim bm As New Bitmap(256, 256)
        " Draw on it.
        Dim gr As Graphics = Graphics.FromImage(bm)
        gr.Clear(Color.White)
        gr.DrawEllipse(Pens.Red, 0, 0, bm.Width - 1, bm.Height - 1)
        gr.DrawLine(Pens.Green, 0, 0, bm.Width - 1, bm.Height - 1)
        gr.DrawLine(Pens.Blue, bm.Width - 1, 0, 0, bm.Height - 1)
        " Save the result as a JPEG file.
        bm.Save("test.wmf", ImageFormat.Wmf)
   End Sub 
End Class


Shrink a wmf Image

Imports System
Imports System.Windows.Forms
Imports System.Collections.Generic
Imports System.ruponentModel
Imports System.Drawing.Imaging
Imports System.Drawing
Public Class MainClass
   Shared Sub Main()
       Dim form1 As Form1 =  new Form1()
       Application.Run(form1)
   End Sub 
End Class
Public Class Form1
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Const WID As Integer = 200
        Dim file_name As String = "test.wmf"
        
        " Reload the metafile and copy it into a Bitmap.
        Dim mf As Metafile = New Metafile(file_name)
        Dim bm As New Bitmap(WID, WID)
        Dim gr As Graphics = Graphics.FromImage(bm)
        Dim dest_bounds As New RectangleF(0, 0, WID, WID)
        Dim source_bounds As New RectangleF(0, 0, WID + 1, WID + 1)
        gr.ScaleTransform(0.5, 0.5)
        gr.DrawImage(mf, bounds, source_bounds, GraphicsUnit.Pixel)
        
        picOrig.SizeMode = PictureBoxSizeMode.AutoSize
        picOrig.Image = bm
        gr.Dispose()
        mf.Dispose()
    End Sub
End Class

<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _
Partial Public Class Form1
    Inherits System.Windows.Forms.Form
    "Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected Overloads 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.ruponentModel.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.
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Me.picSmall = New System.Windows.Forms.PictureBox
        Me.picOrig = New System.Windows.Forms.PictureBox
        CType(Me.picSmall, System.ruponentModel.ISupportInitialize).BeginInit()
        CType(Me.picOrig, System.ruponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        "
        "picSmall
        "
        Me.picSmall.Location = New System.Drawing.Point(64, 8)
        Me.picSmall.Name = "picSmall"
        Me.picSmall.Size = New System.Drawing.Size(32, 24)
        Me.picSmall.TabIndex = 3
        Me.picSmall.TabStop = False
        "
        "picOrig
        "
        Me.picOrig.Location = New System.Drawing.Point(8, 8)
        Me.picOrig.Name = "picOrig"
        Me.picOrig.Size = New System.Drawing.Size(48, 56)
        Me.picOrig.TabIndex = 2
        Me.picOrig.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(326, 215)
        Me.Controls.Add(Me.picSmall)
        Me.Controls.Add(Me.picOrig)
        Me.Name = "Form1"
        Me.Text = "MakeMetafile"
        CType(Me.picSmall, System.ruponentModel.ISupportInitialize).EndInit()
        CType(Me.picOrig, System.ruponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)
    End Sub
    Friend WithEvents picSmall As System.Windows.Forms.PictureBox
    Friend WithEvents picOrig As System.Windows.Forms.PictureBox
End Class
Источник — «http://vbex.ru/index.php?title=VB.Net/2D/Wmf&oldid=169»