в 16:40, 26 мая 2010

2010-05-26T16:40:06Z

Admin: 1 версия

2010-05-26T12:41:52Z

1 версия

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==Displaying and resizing an image==

<source lang="vbnet">
Imports System
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
Imports System.Drawing.Text
Public Class MainClass
Shared Sub Main()
Dim myform As Form = New FrmDisplayLogo()
Application.Run(myform)
End Sub " Main
End Class

Public Class FrmDisplayLogo
Inherits System.Windows.Forms.Form
" width controls
Friend WithEvents txtWidth As TextBox
Friend WithEvents lblWidth As Label
" height controls
Friend WithEvents lblHeight As Label
Friend WithEvents txtHeight As TextBox
Private mGraphicsObject As Graphics
Private mImage As Image
" sets member variables on form load
Private Sub FrmDisplayLogo_Load(ByVal sender As _
System.Object, ByVal e As System.EventArgs) _
Handles MyBase.Load
" get Form"s graphics object
mGraphicsObject = Me.CreateGraphics
" load image
mImage = Image.FromFile("figure2.bmp")
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.lblWidth = New System.Windows.Forms.Label()
Me.lblHeight = New System.Windows.Forms.Label()
Me.txtWidth = New System.Windows.Forms.TextBox()
Me.txtHeight = New System.Windows.Forms.TextBox()
Me.cmdSetButton = New System.Windows.Forms.Button()
Me.SuspendLayout()
"
"lblWidth
"
Me.lblWidth.Location = New System.Drawing.Point(440, 56)
Me.lblWidth.Name = "lblWidth"
Me.lblWidth.TabIndex = 0
Me.lblWidth.Text = "Width"
"
"lblHeight
"
Me.lblHeight.Location = New System.Drawing.Point(440, 128)
Me.lblHeight.Name = "lblHeight"
Me.lblHeight.TabIndex = 2
Me.lblHeight.Text = "Height"
"
"txtWidth
"
Me.txtWidth.Location = New System.Drawing.Point(440, 88)
Me.txtWidth.Name = "txtWidth"
Me.txtWidth.TabIndex = 1
Me.txtWidth.Text = ""
"
"txtHeight
"
Me.txtHeight.Location = New System.Drawing.Point(440, 160)
Me.txtHeight.Name = "txtHeight"
Me.txtHeight.TabIndex = 3
Me.txtHeight.Text = ""
"
"cmdSetButton
"
Me.cmdSetButton.Location = New System.Drawing.Point(456, 200)
Me.cmdSetButton.Name = "cmdSetButton"
Me.cmdSetButton.TabIndex = 4
Me.cmdSetButton.Text = "Set"
"
"FrmDisplayLogo
"
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(568, 273)
Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.cmdSetButton, Me.txtHeight, Me.lblHeight, Me.txtWidth, Me.lblWidth})
Me.Name = "FrmDisplayLogo"
Me.Text = "Display Logo"
Me.ResumeLayout(False)
End Sub
#End Region
Private Sub cmdSetButton_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles cmdSetButton.Click

Dim width As Integer = Convert.ToInt32(txtWidth.Text)
Dim height As Integer = Convert.ToInt32(txtHeight.Text)

If (width > 375 OrElse height > 225) Then
MessageBox.Show("Height or Width too large")
Return
End If
mGraphicsObject.Clear(Me.BackColor)

mGraphicsObject.DrawImage(mImage, 5, 5, width, height)
End Sub
End Class

</source>

==Draw Image on a Frame==

<source lang="vbnet">
Imports System
Imports System.Runtime.InteropServices
Imports System.Drawing
Imports System.ruponentModel
Imports System.Windows.Forms
Imports System.IO
Public Class MainClass

Shared Sub Main(ByVal args As String())
Dim myform As Form = New Form1()
Application.Run(myform)
End Sub
End Class
Public Class Form1
Private Sub Form1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
Dim bm As Bitmap = new Bitmap("figure2.bmp")
" Make the bitmap"s "background" pixels transparent.
bm.MakeTransparent(bm.GetPixel(1, 1))
" Draw the bitmap onto the form.
e.Graphics.DrawImage(bm, 0, 0)
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 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.SuspendLayout()
"
"Form1
"
Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
Me.ClientSize = New System.Drawing.Size(702, 303)
Me.Name = "Form1"
Me.Text = "ShowCursors"
Me.ResumeLayout(False)
End Sub
End Class

</source>

==Process an Image: invert Pixel==

<source lang="vbnet">
Imports System.Drawing.Drawing2D
Imports System
Imports System.Drawing.Text
Imports System.Drawing
Imports System.Windows.Forms
Imports System.Math
Public Class MainClass
Shared Sub Main()
Dim form1 As Form = 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
Dim bm As New Bitmap("figure2.bmp")
Dim source_bm As New Bitmap(bm)

bm.Dispose()
picSource.Image = source_bm
" Arrange the controls.
picDest.Size = picSource.Size
" Make the result Bitmap.
Dim dest_bm As New Bitmap(source_bm)
" Process the image"s pictures.
For y As Integer = 0 To dest_bm.Height - 1
For x As Integer = 0 To dest_bm.Width - 1
" Get this pixel"s color.
Dim clr As Color = dest_bm.GetPixel(x, y)
" Invert the color"s components.
clr = Color.FromArgb(255, _
255 - clr.R, _
255 - clr.G, _
255 - clr.B)
" Set the result pixel"s color.
dest_bm.SetPixel(x, y, clr)
Next x
Next y
" Display the results.
picDest.Image = dest_bm
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.SplitContainer1 = New System.Windows.Forms.SplitContainer
Me.picSource = New System.Windows.Forms.PictureBox
Me.picDest = New System.Windows.Forms.PictureBox
Me.SplitContainer1.Panel1.SuspendLayout()
Me.SplitContainer1.Panel2.SuspendLayout()
Me.SplitContainer1.SuspendLayout()
CType(Me.picSource, System.ruponentModel.ISupportInitialize).BeginInit()
CType(Me.picDest, System.ruponentModel.ISupportInitialize).BeginInit()
Me.SuspendLayout()
"
"SplitContainer1
"
Me.SplitContainer1.Dock = System.Windows.Forms.DockStyle.Fill
Me.SplitContainer1.Location = New System.Drawing.Point(0, 24)
Me.SplitContainer1.Name = "SplitContainer1"
"
"SplitContainer1.Panel1
"
Me.SplitContainer1.Panel1.AutoScroll = True
Me.SplitContainer1.Panel1.Controls.Add(Me.picSource)
"
"SplitContainer1.Panel2
"
Me.SplitContainer1.Panel2.AutoScroll = True
Me.SplitContainer1.Panel2.Controls.Add(Me.picDest)
Me.SplitContainer1.Size = New System.Drawing.Size(522, 249)
Me.SplitContainer1.SplitterDistance = 270
Me.SplitContainer1.TabIndex = 1
Me.SplitContainer1.Text = "SplitContainer1"
"
"picSource
"
Me.picSource.AutoSize = True
Me.picSource.Location = New System.Drawing.Point(0, 0)
Me.picSource.Name = "picSource"
Me.picSource.Size = New System.Drawing.Size(208, 184)
Me.picSource.SizeMode = System.Windows.Forms.PictureBoxSizeMode.AutoSize
Me.picSource.TabIndex = 0
Me.picSource.TabStop = False
"
"picDest
"
Me.picDest.AutoSize = True
Me.picDest.Location = New System.Drawing.Point(0, 0)
Me.picDest.Name = "picDest"
Me.picDest.Size = New System.Drawing.Size(184, 184)
Me.picDest.SizeMode = System.Windows.Forms.PictureBoxSizeMode.AutoSize
Me.picDest.TabIndex = 1
Me.picDest.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(522, 273)
Me.Controls.Add(Me.SplitContainer1)
Me.Name = "Form1"
Me.Text = "InvertImageGetSetPixels"
Me.SplitContainer1.Panel1.ResumeLayout(False)
Me.SplitContainer1.Panel1.PerformLayout()
Me.SplitContainer1.Panel2.ResumeLayout(False)
Me.SplitContainer1.Panel2.PerformLayout()
Me.SplitContainer1.ResumeLayout(False)
CType(Me.picSource, System.ruponentModel.ISupportInitialize).EndInit()
CType(Me.picDest, System.ruponentModel.ISupportInitialize).EndInit()
Me.ResumeLayout(False)
Me.PerformLayout()
End Sub
Friend WithEvents SplitContainer1 As System.Windows.Forms.SplitContainer
Friend WithEvents picSource As System.Windows.Forms.PictureBox
Friend WithEvents picDest As System.Windows.Forms.PictureBox
End Class

</source>

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VB.Net/2D/Draw Image - История изменений

в 16:40, 26 мая 2010

Admin: 1 версия