VB.Net Tutorial/2D Graphics/Draw Image

Материал из VB Эксперт
Версия от 12:55, 26 мая 2010; Admin (обсуждение | вклад) (1 версия)
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Draw an image

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class ImageDisplay
   public Shared Sub Main
        Application.Run(New FrmDisplayLogo)
   End Sub
End class
Public Class FrmDisplayLogo
   Inherits System.Windows.Forms.Form
   
   Private Sub FrmDisplayLogo_Load(ByVal sender As _
      System.Object, ByVal e As System.EventArgs) _
      Handles MyBase.Load
      Dim width As Integer = 200
      Dim height As Integer = 200
      Dim mGraphicsObject As Graphics
      mGraphicsObject = Me.CreateGraphics
      
      mGraphicsObject.DrawImage(Image.FromFile("YourImage.bmp"), 5, 5, width, height)
   End Sub " FrmDisplayLogo_Load
#Region " Windows Form Designer generated code "
   Public Sub New()
      MyBase.New()
      " This call is required by Windows Form Designer.
      InitializeComponent()
      " Add any initialization after InitializeComponent() call
   End Sub " new
   "Form overrides dispose to clean up the component list.
   Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
      If disposing Then
         If Not (components Is Nothing) Then
            components.Dispose()
         End If
      End If
      MyBase.Dispose(disposing)
   End Sub
   Friend WithEvents cmdSetButton As System.Windows.Forms.Button
   "Required by the Windows Form Designer
   Private components As System.ruponentModel.Container
   "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.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
      Me.ClientSize = New System.Drawing.Size(568, 273)
   End Sub
#End Region

End Class

Draw Image and string

Imports System.Drawing
Imports System.Drawing.Imaging
Imports System.Windows.Forms
public class DrawImageAndString
   public Shared Sub Main
        Application.Run(New TransparencyForm)
   End Sub
End class
Public Class TransparencyForm
    Inherits System.Windows.Forms.Form
#Region " Windows Form Designer generated code "
    Public Sub New()
        MyBase.New()
        "This call is required by the Windows Form Designer.
        InitializeComponent()
        "Add any initialization after the InitializeComponent() call
        Me.SetStyle(ControlStyles.ResizeRedraw, True)
        Me.SetStyle(ControlStyles.DoubleBuffer, True)
        Me.SetStyle(ControlStyles.AllPaintingInWmPaint, True)
    End Sub
    "Form overrides dispose to clean up the component list.
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        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.
    Friend WithEvents splitter2 As System.Windows.Forms.Splitter
    Friend WithEvents splitter1 As System.Windows.Forms.Splitter
    Friend WithEvents groupBox1 As System.Windows.Forms.GroupBox
    Friend WithEvents panel1 As System.Windows.Forms.Panel
    Friend WithEvents groupBox3 As System.Windows.Forms.GroupBox
    Friend WithEvents panel3 As System.Windows.Forms.Panel
    Friend WithEvents groupBox2 As System.Windows.Forms.GroupBox
    Friend WithEvents panel2 As System.Windows.Forms.Panel
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.splitter2 = New System.Windows.Forms.Splitter()
        Me.splitter1 = New System.Windows.Forms.Splitter()
        Me.groupBox1 = New System.Windows.Forms.GroupBox()
        Me.panel1 = New System.Windows.Forms.Panel()
        Me.groupBox3 = New System.Windows.Forms.GroupBox()
        Me.panel3 = New System.Windows.Forms.Panel()
        Me.groupBox2 = New System.Windows.Forms.GroupBox()
        Me.panel2 = New System.Windows.Forms.Panel()
        Me.groupBox1.SuspendLayout()
        Me.groupBox3.SuspendLayout()
        Me.groupBox2.SuspendLayout()
        Me.SuspendLayout()
        "
        "splitter2
        "
        Me.splitter2.Location = New System.Drawing.Point(232, 0)
        Me.splitter2.Name = "splitter2"
        Me.splitter2.Size = New System.Drawing.Size(3, 102)
        Me.splitter2.TabIndex = 9
        Me.splitter2.TabStop = False
        "
        "splitter1
        "
        Me.splitter1.Location = New System.Drawing.Point(229, 0)
        Me.splitter1.Name = "splitter1"
        Me.splitter1.Size = New System.Drawing.Size(3, 102)
        Me.splitter1.TabIndex = 6
        Me.splitter1.TabStop = False
        "
        "groupBox1
        "
        Me.groupBox1.Controls.AddRange(New System.Windows.Forms.Control() {Me.panel1})
        Me.groupBox1.Dock = System.Windows.Forms.DockStyle.Left
        Me.groupBox1.Location = New System.Drawing.Point(117, 0)
        Me.groupBox1.Name = "groupBox1"
        Me.groupBox1.Size = New System.Drawing.Size(300, 102)
        Me.groupBox1.TabIndex = 5
        Me.groupBox1.TabStop = False
        Me.groupBox1.Text = "Original Colors"
        "
        "panel1
        "
        Me.panel1.BackColor = System.Drawing.Color.White
        Me.panel1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.panel1.Dock = System.Windows.Forms.DockStyle.Fill
        Me.panel1.Location = New System.Drawing.Point(3, 16)
        Me.panel1.Name = "panel1"
        Me.panel1.Size = New System.Drawing.Size(106, 83)
        Me.panel1.TabIndex = 0
        "
        "groupBox3
        "
        Me.groupBox3.Controls.AddRange(New System.Windows.Forms.Control() {Me.panel3})
        Me.groupBox3.Dock = System.Windows.Forms.DockStyle.Fill
        Me.groupBox3.Location = New System.Drawing.Point(117, 0)
        Me.groupBox3.Name = "groupBox3"
        Me.groupBox3.Size = New System.Drawing.Size(235, 102)
        Me.groupBox3.TabIndex = 8
        Me.groupBox3.TabStop = False
        Me.groupBox3.Text = "Made Transparent"
        "
        "panel3
        "
        Me.panel3.BackColor = System.Drawing.Color.White
        Me.panel3.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.panel3.Dock = System.Windows.Forms.DockStyle.Fill
        Me.panel3.Location = New System.Drawing.Point(3, 16)
        Me.panel3.Name = "panel3"
        Me.panel3.Size = New System.Drawing.Size(229, 83)
        Me.panel3.TabIndex = 0
        "
        "groupBox2
        "
        Me.groupBox2.Controls.AddRange(New System.Windows.Forms.Control() {Me.panel2})
        Me.groupBox2.Dock = System.Windows.Forms.DockStyle.Left
        Me.groupBox2.Name = "groupBox2"
        Me.groupBox2.Size = New System.Drawing.Size(117, 102)
        Me.groupBox2.TabIndex = 7
        Me.groupBox2.TabStop = False
        Me.groupBox2.Text = "White Background"
        "
        "panel2
        "
        Me.panel2.BackColor = System.Drawing.Color.White
        Me.panel2.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.panel2.Dock = System.Windows.Forms.DockStyle.Fill
        Me.panel2.Location = New System.Drawing.Point(3, 16)
        Me.panel2.Name = "panel2"
        Me.panel2.Size = New System.Drawing.Size(111, 83)
        Me.panel2.TabIndex = 0
        "
        "TransparencyForm
        "
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(352, 102)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.groupBox1})
        Me.Name = "TransparencyForm"
        Me.Text = "TransparencyForm"
        Me.groupBox1.ResumeLayout(False)
        Me.groupBox3.ResumeLayout(False)
        Me.groupBox2.ResumeLayout(False)
        Me.ResumeLayout(False)
    End Sub
#End Region

    Dim backgroundString As String = "the quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\nthe quick brown fox jumps over the lazy dog\n"

    Private Sub panel1_Paint(ByVal sender As Object, ByVal e As PaintEventArgs) Handles panel1.Paint
        Dim g As Graphics = e.Graphics
        Dim bmp As Bitmap = New Bitmap("yourfile.jpg")
        g.DrawString(backgroundString, Me.Font, Brushes.Black, Me.ClientRectangle.Left, Me.ClientRectangle.Top)
        Dim rect As Rectangle = New Rectangle(0, 0, bmp.Width, bmp.Height)
        rect.Offset(10,10)
        g.DrawImage(bmp, rect)
    End Sub
    Private Sub TransparencyForm_Layout(ByVal sender As Object, ByVal e As LayoutEventArgs) Handles MyBase.Layout
        panel1.Refresh()
    End Sub
End Class