ControlStyles.ResizeRedraw : ControlStyles « System.Windows.Forms « VB.Net by API

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VB.Net
VB.Net Tutorial
VB.Net by API » System.Windows.Forms » ControlStyles 
ControlStyles.ResizeRedraw
  
Imports System
Imports System.Collections
Imports System.ComponentModel
Imports System.Windows.Forms
Imports System.Data
Imports System.Configuration
Imports System.Resources
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Drawing.Imaging

Public Class MainClass
    Shared Sub Main()
        Dim myform As Form = New TransparencyForm()
        Application.Run(myform)
    End Sub
End Class

Public Class TransparencyForm
    Inherits System.Windows.Forms.Form
    Public Sub New()
        MyBase.New()

        InitializeComponent()
        Me.SetStyle(ControlStyles.ResizeRedraw, True)
        Me.SetStyle(ControlStyles.DoubleBuffer, True)
        Me.SetStyle(ControlStyles.AllPaintingInWmPaint, True)
    End Sub

    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(2320)
        Me.splitter2.Name = "splitter2"
        Me.splitter2.Size = New System.Drawing.Size(3102)
        Me.splitter2.TabIndex = 9
        Me.splitter2.TabStop = False
        '
        'splitter1
        '
        Me.splitter1.Location = New System.Drawing.Point(2290)
        Me.splitter1.Name = "splitter1"
        Me.splitter1.Size = New System.Drawing.Size(3102)
        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(1170)
        Me.groupBox1.Name = "groupBox1"
        Me.groupBox1.Size = New System.Drawing.Size(112102)
        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(316)
        Me.panel1.Name = "panel1"
        Me.panel1.Size = New System.Drawing.Size(10683)
        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(1170)
        Me.groupBox3.Name = "groupBox3"
        Me.groupBox3.Size = New System.Drawing.Size(235102)
        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(316)
        Me.panel3.Name = "panel3"
        Me.panel3.Size = New System.Drawing.Size(22983)
        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(117102)
        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(316)
        Me.panel2.Name = "panel2"
        Me.panel2.Size = New System.Drawing.Size(11183)
        Me.panel2.TabIndex = 0
        '
        'TransparencyForm
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(513)
        Me.ClientSize = New System.Drawing.Size(352102)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.splitter2, Me.splitter1, Me.groupBox1, Me.groupBox3, Me.groupBox2})
        Me.Name = "TransparencyForm"
        Me.Text = "TransparencyForm"
        Me.groupBox1.ResumeLayout(False)
        Me.groupBox3.ResumeLayout(False)
        Me.groupBox2.ResumeLayout(False)
        Me.ResumeLayout(False)
    End Sub

    Dim backgroundString As String = "a\n b\n c\n d\n e\n f\n g\n H \n"

    Private Sub panel1_Paint(ByVal sender As Object, ByVal e As PaintEventArgsHandles panel1.Paint
        Dim As Graphics = e.Graphics
        Dim bmp As Bitmap = New Bitmap("figure2.BMP")
        g.DrawString(backgroundString, Me.Font, Brushes.Black, Me.ClientRectangle.Left, Me.ClientRectangle.Top)
        Dim rect As Rectangle = New Rectangle(00, bmp.Width, bmp.Height)
        rect.Offset((Me.panel1.ClientRectangle.Width - rect.Width2(Me.panel1.ClientRectangle.Height - rect.Height2)
        g.DrawImage(bmp, rect)
    End Sub

    Private Sub panel2_Paint(ByVal sender As Object, ByVal e As PaintEventArgsHandles panel2.Paint
        Dim As Graphics = e.Graphics
        Dim bmp As Bitmap = New Bitmap("figure2.BMP")
        g.DrawString(backgroundString, Me.Font, Brushes.Black, Me.ClientRectangle.Left, Me.ClientRectangle.Top)

        Dim colorMap As ColorMap() = New ColorMap() {New ColorMap()}
        colorMap(0).OldColor = bmp.GetPixel(0, bmp.Height - 1)
        colorMap(0).NewColor = Color.White
        Dim attr As ImageAttributes = New ImageAttributes()
        attr.SetRemapTable(colorMap)

        Dim rect As Rectangle = New Rectangle(00, bmp.Width, bmp.Height)
        rect.Offset((Me.panel1.ClientRectangle.Width - rect.Width2(Me.panel1.ClientRectangle.Height - rect.Height2)
        g.DrawImage(bmp, rect)
    End Sub

    Private Sub panel3_Paint(ByVal sender As Object, ByVal e As PaintEventArgsHandles panel3.Paint
        Dim As Graphics = e.Graphics
        Dim bmp As Bitmap = New Bitmap("figure2.BMP")
        g.DrawString(backgroundString, Me.Font, Brushes.Black, Me.ClientRectangle.Left, Me.ClientRectangle.Top)

        bmp.MakeTransparent(bmp.GetPixel(0, bmp.Height - 1))
        Dim rect As Rectangle = New Rectangle(00, bmp.Width, bmp.Height)
        rect.Offset((Me.panel1.ClientRectangle.Width - rect.Width2(Me.panel1.ClientRectangle.Height - rect.Height2)
        g.DrawImage(bmp, rect)
    End Sub

    Private Sub TransparencyForm_Layout(ByVal sender As Object, ByVal e As LayoutEventArgsHandles MyBase.Layout
        panel1.Refresh()
        panel2.Refresh()
        panel3.Refresh()
    End Sub
End Class

   
    
  
Related examples in the same category
1.ControlStyles.AllPaintingInWmPaint
2.ControlStyles.DoubleBuffer
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