VB.Net by API/System.Windows.Forms/TrackBar

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TrackBar.Maximum

  

Imports System.Collections
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class DrawCurveTension
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class
Public Class Form1
    Private BendPoints As New Generic.List(Of Point)
    Private Sub Form1_MouseClick(ByVal sender As Object,ByVal e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseClick
        BendPoints.Add(New Point(e.X, e.Y))
        Me.Refresh()
    End Sub
    Private Sub Form1_Paint(ByVal sender As Object, _
          ByVal e As System.Windows.Forms.PaintEventArgs) _
          Handles Me.Paint
        Dim tension As Single
        Dim canvas As Graphics
        Dim scanPoint As Point
        Const PointSize As Integer = 2
        tension = TensionLevel.Value / TensionLevel.Maximum
        LabelTension.Text = "Tension:  " & tension.ToString
        canvas = e.Graphics
        For Each scanPoint In BendPoints
            canvas.FillEllipse(Brushes.Red,scanPoint.X - PointSize,scanPoint.Y - PointSize,PointSize * 2, PointSize * 2)
        Next scanPoint
        If (BendPoints.Count > 1) Then
            canvas.DrawCurve(Pens.Black, BendPoints.ToArray, tension)
        End If
    End Sub
    Private Sub TensionLevel_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) _
          Handles TensionLevel.ValueChanged
        Me.Refresh()
    End Sub
    Private Sub ActReset_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles ActReset.Click
        BendPoints.Clear()
        Me.Refresh()
    End Sub
End Class

<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _
Partial 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.LabelTension = New System.Windows.Forms.Label
        Me.TensionLevel = New System.Windows.Forms.TrackBar
        Me.ActReset = New System.Windows.Forms.Button
        CType(Me.TensionLevel, System.ruponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        "
        "LabelTension
        "
        Me.LabelTension.AutoSize = True
        Me.LabelTension.Location = New System.Drawing.Point(24, 32)
        Me.LabelTension.Name = "LabelTension"
        Me.LabelTension.Size = New System.Drawing.Size(66, 13)
        Me.LabelTension.TabIndex = 0
        Me.LabelTension.Text = "Tension: 0.0"
        "
        "TensionLevel
        "
        Me.TensionLevel.Location = New System.Drawing.Point(136, 24)
        Me.TensionLevel.Name = "TensionLevel"
        Me.TensionLevel.Size = New System.Drawing.Size(224, 45)
        Me.TensionLevel.TabIndex = 1
        "
        "ActReset
        "
        Me.ActReset.Location = New System.Drawing.Point(392, 24)
        Me.ActReset.Name = "ActReset"
        Me.ActReset.Size = New System.Drawing.Size(75, 23)
        Me.ActReset.TabIndex = 2
        Me.ActReset.Text = "Reset"
        Me.ActReset.UseVisualStyleBackColor = True
        "
        "Form1
        "
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(547, 264)
        Me.Controls.Add(Me.ActReset)
        Me.Controls.Add(Me.TensionLevel)
        Me.Controls.Add(Me.LabelTension)
        Me.Name = "Form1"
        Me.Text = "Drawing Cardinal Splines"
        CType(Me.TensionLevel, System.ruponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)
        Me.PerformLayout()
    End Sub
    Friend WithEvents LabelTension As System.Windows.Forms.Label
    Friend WithEvents TensionLevel As System.Windows.Forms.TrackBar
    Friend WithEvents ActReset As System.Windows.Forms.Button
End Class


TrackBar.TickStyle

  
imports System
imports System.Drawing
imports System.Windows.Forms
public class TrackBars : inherits Form
  dim htbar as TrackBar
  dim vtbar as TrackBar
  public sub New()
    Size = new Size(500,520)
    htbar = new TrackBar()
    htbar.Parent = me
    htbar.Orientation = Orientation.Horizontal
    htbar.Size = new Size(200, 10)
    htbar.Location = new Point(0, 25)
    htbar.TickStyle = TickStyle.BottomRight
    htbar.TickFrequency = 25
    htbar.Minimum = 25
    htbar.Maximum = 400
    htbar.SmallChange = 10
    htbar.LargeChange = 25
    htbar.BackColor = Color.Yellow
    htbar.Value = 100
    AddHandler htbar.ValueChanged, AddressOf htbar_OnValueChanged
    vtbar = new TrackBar()
    vtbar.Parent = me
    vtbar.Orientation = Orientation.Vertical
    vtbar.Size = new Size(25, 300)
    vtbar.Location = new Point(25, 25)
    vtbar.TickStyle = TickStyle.BottomRight
    vtbar.SetRange(25,400)
    vtbar.SmallChange = 10
    vtbar.LargeChange = 50
    vtbar.TickFrequency = CInt(vtbar.Maximum / 20)
    vtbar.BackColor = Color.Pink
    vtbar.Value = 200
    AddHandler vtbar.ValueChanged, AddressOf vtbar_OnValueChanged
  end sub  "  close for constructor
  private sub htbar_OnValueChanged(ByVal sender as object, _
              ByVal e as EventArgs)
    Console.WriteLine(htbar.Value)
  end sub
  private sub vtbar_OnValueChanged(ByVal sender as object, _
              ByVal e as EventArgs)
    Console.WriteLine(vtbar.Value)
    Console.WriteLine(vtbar.LargeChange)
  end sub
  public shared sub Main() 
    Application.Run(new TrackBars())
  end sub
end class


TrackBar.Value

  

Imports System.Collections
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class DrawCurveTension
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class
Public Class Form1
    Private BendPoints As New Generic.List(Of Point)
    Private Sub Form1_MouseClick(ByVal sender As Object,ByVal e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseClick
        BendPoints.Add(New Point(e.X, e.Y))
        Me.Refresh()
    End Sub
    Private Sub Form1_Paint(ByVal sender As Object, _
          ByVal e As System.Windows.Forms.PaintEventArgs) _
          Handles Me.Paint
        Dim tension As Single
        Dim canvas As Graphics
        Dim scanPoint As Point
        Const PointSize As Integer = 2
        tension = TensionLevel.Value / TensionLevel.Maximum
        LabelTension.Text = "Tension:  " & tension.ToString
        canvas = e.Graphics
        For Each scanPoint In BendPoints
            canvas.FillEllipse(Brushes.Red,scanPoint.X - PointSize,scanPoint.Y - PointSize,PointSize * 2, PointSize * 2)
        Next scanPoint
        If (BendPoints.Count > 1) Then
            canvas.DrawCurve(Pens.Black, BendPoints.ToArray, tension)
        End If
    End Sub
    Private Sub TensionLevel_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) _
          Handles TensionLevel.ValueChanged
        Me.Refresh()
    End Sub
    Private Sub ActReset_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles ActReset.Click
        BendPoints.Clear()
        Me.Refresh()
    End Sub
End Class

<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _
Partial 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.LabelTension = New System.Windows.Forms.Label
        Me.TensionLevel = New System.Windows.Forms.TrackBar
        Me.ActReset = New System.Windows.Forms.Button
        CType(Me.TensionLevel, System.ruponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        "
        "LabelTension
        "
        Me.LabelTension.AutoSize = True
        Me.LabelTension.Location = New System.Drawing.Point(24, 32)
        Me.LabelTension.Name = "LabelTension"
        Me.LabelTension.Size = New System.Drawing.Size(66, 13)
        Me.LabelTension.TabIndex = 0
        Me.LabelTension.Text = "Tension: 0.0"
        "
        "TensionLevel
        "
        Me.TensionLevel.Location = New System.Drawing.Point(136, 24)
        Me.TensionLevel.Name = "TensionLevel"
        Me.TensionLevel.Size = New System.Drawing.Size(224, 45)
        Me.TensionLevel.TabIndex = 1
        "
        "ActReset
        "
        Me.ActReset.Location = New System.Drawing.Point(392, 24)
        Me.ActReset.Name = "ActReset"
        Me.ActReset.Size = New System.Drawing.Size(75, 23)
        Me.ActReset.TabIndex = 2
        Me.ActReset.Text = "Reset"
        Me.ActReset.UseVisualStyleBackColor = True
        "
        "Form1
        "
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(547, 264)
        Me.Controls.Add(Me.ActReset)
        Me.Controls.Add(Me.TensionLevel)
        Me.Controls.Add(Me.LabelTension)
        Me.Name = "Form1"
        Me.Text = "Drawing Cardinal Splines"
        CType(Me.TensionLevel, System.ruponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)
        Me.PerformLayout()
    End Sub
    Friend WithEvents LabelTension As System.Windows.Forms.Label
    Friend WithEvents TensionLevel As System.Windows.Forms.TrackBar
    Friend WithEvents ActReset As System.Windows.Forms.Button
End Class


TractBar.BackColor

  
imports System
imports System.Drawing
imports System.Windows.Forms
public class TrackBars : inherits Form
  dim htbar as TrackBar
  dim vtbar as TrackBar
  public sub New()
    Size = new Size(500,520)
    htbar = new TrackBar()
    htbar.Parent = me
    htbar.Orientation = Orientation.Horizontal
    htbar.Size = new Size(200, 10)
    htbar.Location = new Point(0, 25)
    htbar.TickStyle = TickStyle.BottomRight
    htbar.TickFrequency = 25
    htbar.Minimum = 25
    htbar.Maximum = 400
    htbar.SmallChange = 10
    htbar.LargeChange = 25
    htbar.BackColor = Color.Yellow
    htbar.Value = 100
    AddHandler htbar.ValueChanged, AddressOf htbar_OnValueChanged
    vtbar = new TrackBar()
    vtbar.Parent = me
    vtbar.Orientation = Orientation.Vertical
    vtbar.Size = new Size(25, 300)
    vtbar.Location = new Point(25, 25)
    vtbar.TickStyle = TickStyle.BottomRight
    vtbar.SetRange(25,400)
    vtbar.SmallChange = 10
    vtbar.LargeChange = 50
    vtbar.TickFrequency = CInt(vtbar.Maximum / 20)
    vtbar.BackColor = Color.Pink
    vtbar.Value = 200
    AddHandler vtbar.ValueChanged, AddressOf vtbar_OnValueChanged
  end sub  "  close for constructor
  private sub htbar_OnValueChanged(ByVal sender as object, _
              ByVal e as EventArgs)
    Console.WriteLine(htbar.Value)
  end sub
  private sub vtbar_OnValueChanged(ByVal sender as object, _
              ByVal e as EventArgs)
    Console.WriteLine(vtbar.Value)
    Console.WriteLine(vtbar.LargeChange)
  end sub
  public shared sub Main() 
    Application.Run(new TrackBars())
  end sub
end class


TractBar.LargeChange

  

imports System
imports System.Drawing
imports System.Windows.Forms
public class TrackBars : inherits Form
  dim htbar as TrackBar
  dim vtbar as TrackBar
  public sub New()
    Size = new Size(500,520)
    htbar = new TrackBar()
    htbar.Parent = me
    htbar.Orientation = Orientation.Horizontal
    htbar.Size = new Size(200, 10)
    htbar.Location = new Point(0, 25)
    htbar.TickStyle = TickStyle.BottomRight
    htbar.TickFrequency = 25
    htbar.Minimum = 25
    htbar.Maximum = 400
    htbar.SmallChange = 10
    htbar.LargeChange = 25
    htbar.BackColor = Color.Yellow
    htbar.Value = 100
    AddHandler htbar.ValueChanged, AddressOf htbar_OnValueChanged
    vtbar = new TrackBar()
    vtbar.Parent = me
    vtbar.Orientation = Orientation.Vertical
    vtbar.Size = new Size(25, 300)
    vtbar.Location = new Point(25, 25)
    vtbar.TickStyle = TickStyle.BottomRight
    vtbar.SetRange(25,400)
    vtbar.SmallChange = 10
    vtbar.LargeChange = 50
    vtbar.TickFrequency = CInt(vtbar.Maximum / 20)
    vtbar.BackColor = Color.Pink
    vtbar.Value = 200
    AddHandler vtbar.ValueChanged, AddressOf vtbar_OnValueChanged
  end sub  "  close for constructor
  private sub htbar_OnValueChanged(ByVal sender as object, _
              ByVal e as EventArgs)
    Console.WriteLine(htbar.Value)
  end sub
  private sub vtbar_OnValueChanged(ByVal sender as object, _
              ByVal e as EventArgs)
    Console.WriteLine(vtbar.Value)
    Console.WriteLine(vtbar.LargeChange)
  end sub
  public shared sub Main() 
    Application.Run(new TrackBars())
  end sub
end class


TractBar.SmallChange

  
imports System
imports System.Drawing
imports System.Windows.Forms
public class TrackBars : inherits Form
  dim htbar as TrackBar
  dim vtbar as TrackBar
  public sub New()
    Size = new Size(500,520)
    htbar = new TrackBar()
    htbar.Parent = me
    htbar.Orientation = Orientation.Horizontal
    htbar.Size = new Size(200, 10)
    htbar.Location = new Point(0, 25)
    htbar.TickStyle = TickStyle.BottomRight
    htbar.TickFrequency = 25
    htbar.Minimum = 25
    htbar.Maximum = 400
    htbar.SmallChange = 10
    htbar.LargeChange = 25
    htbar.BackColor = Color.Yellow
    htbar.Value = 100
    AddHandler htbar.ValueChanged, AddressOf htbar_OnValueChanged
    vtbar = new TrackBar()
    vtbar.Parent = me
    vtbar.Orientation = Orientation.Vertical
    vtbar.Size = new Size(25, 300)
    vtbar.Location = new Point(25, 25)
    vtbar.TickStyle = TickStyle.BottomRight
    vtbar.SetRange(25,400)
    vtbar.SmallChange = 10
    vtbar.LargeChange = 50
    vtbar.TickFrequency = CInt(vtbar.Maximum / 20)
    vtbar.BackColor = Color.Pink
    vtbar.Value = 200
    AddHandler vtbar.ValueChanged, AddressOf vtbar_OnValueChanged
  end sub  "  close for constructor
  private sub htbar_OnValueChanged(ByVal sender as object, _
              ByVal e as EventArgs)
    Console.WriteLine(htbar.Value)
  end sub
  private sub vtbar_OnValueChanged(ByVal sender as object, _
              ByVal e as EventArgs)
    Console.WriteLine(vtbar.Value)
    Console.WriteLine(vtbar.LargeChange)
  end sub
  public shared sub Main() 
    Application.Run(new TrackBars())
  end sub
end class


TractBar.TickFrequency

  
imports System
imports System.Drawing
imports System.Windows.Forms
public class TrackBars : inherits Form
  dim htbar as TrackBar
  dim vtbar as TrackBar
  public sub New()
    Size = new Size(500,520)
    htbar = new TrackBar()
    htbar.Parent = me
    htbar.Orientation = Orientation.Horizontal
    htbar.Size = new Size(200, 10)
    htbar.Location = new Point(0, 25)
    htbar.TickStyle = TickStyle.BottomRight
    htbar.TickFrequency = 25
    htbar.Minimum = 25
    htbar.Maximum = 400
    htbar.SmallChange = 10
    htbar.LargeChange = 25
    htbar.BackColor = Color.Yellow
    htbar.Value = 100
    AddHandler htbar.ValueChanged, AddressOf htbar_OnValueChanged
    vtbar = new TrackBar()
    vtbar.Parent = me
    vtbar.Orientation = Orientation.Vertical
    vtbar.Size = new Size(25, 300)
    vtbar.Location = new Point(25, 25)
    vtbar.TickStyle = TickStyle.BottomRight
    vtbar.SetRange(25,400)
    vtbar.SmallChange = 10
    vtbar.LargeChange = 50
    vtbar.TickFrequency = CInt(vtbar.Maximum / 20)
    vtbar.BackColor = Color.Pink
    vtbar.Value = 200
    AddHandler vtbar.ValueChanged, AddressOf vtbar_OnValueChanged
  end sub  "  close for constructor
  private sub htbar_OnValueChanged(ByVal sender as object, _
              ByVal e as EventArgs)
    Console.WriteLine(htbar.Value)
  end sub
  private sub vtbar_OnValueChanged(ByVal sender as object, _
              ByVal e as EventArgs)
    Console.WriteLine(vtbar.Value)
    Console.WriteLine(vtbar.LargeChange)
  end sub
  public shared sub Main() 
    Application.Run(new TrackBars())
  end sub
end class


TractBar.Value

  
imports System
imports System.Drawing
imports System.Windows.Forms
public class TrackBars : inherits Form
  dim htbar as TrackBar
  dim vtbar as TrackBar
  public sub New()
    Size = new Size(500,520)
    htbar = new TrackBar()
    htbar.Parent = me
    htbar.Orientation = Orientation.Horizontal
    htbar.Size = new Size(200, 10)
    htbar.Location = new Point(0, 25)
    htbar.TickStyle = TickStyle.BottomRight
    htbar.TickFrequency = 25
    htbar.Minimum = 25
    htbar.Maximum = 400
    htbar.SmallChange = 10
    htbar.LargeChange = 25
    htbar.BackColor = Color.Yellow
    htbar.Value = 100
    AddHandler htbar.ValueChanged, AddressOf htbar_OnValueChanged
    vtbar = new TrackBar()
    vtbar.Parent = me
    vtbar.Orientation = Orientation.Vertical
    vtbar.Size = new Size(25, 300)
    vtbar.Location = new Point(25, 25)
    vtbar.TickStyle = TickStyle.BottomRight
    vtbar.SetRange(25,400)
    vtbar.SmallChange = 10
    vtbar.LargeChange = 50
    vtbar.TickFrequency = CInt(vtbar.Maximum / 20)
    vtbar.BackColor = Color.Pink
    vtbar.Value = 200
    AddHandler vtbar.ValueChanged, AddressOf vtbar_OnValueChanged
  end sub  "  close for constructor
  private sub htbar_OnValueChanged(ByVal sender as object, _
              ByVal e as EventArgs)
    Console.WriteLine(htbar.Value)
  end sub
  private sub vtbar_OnValueChanged(ByVal sender as object, _
              ByVal e as EventArgs)
    Console.WriteLine(vtbar.Value)
    Console.WriteLine(vtbar.LargeChange)
  end sub
  public shared sub Main() 
    Application.Run(new TrackBars())
  end sub
end class


TractBar.ValueChanged

  
imports System
imports System.Drawing
imports System.Windows.Forms
public class TrackBars : inherits Form
  dim htbar as TrackBar
  dim vtbar as TrackBar
  public sub New()
    Size = new Size(500,520)
    htbar = new TrackBar()
    htbar.Parent = me
    htbar.Orientation = Orientation.Horizontal
    htbar.Size = new Size(200, 10)
    htbar.Location = new Point(0, 25)
    htbar.TickStyle = TickStyle.BottomRight
    htbar.TickFrequency = 25
    htbar.Minimum = 25
    htbar.Maximum = 400
    htbar.SmallChange = 10
    htbar.LargeChange = 25
    htbar.BackColor = Color.Yellow
    htbar.Value = 100
    AddHandler htbar.ValueChanged, AddressOf htbar_OnValueChanged
    vtbar = new TrackBar()
    vtbar.Parent = me
    vtbar.Orientation = Orientation.Vertical
    vtbar.Size = new Size(25, 300)
    vtbar.Location = new Point(25, 25)
    vtbar.TickStyle = TickStyle.BottomRight
    vtbar.SetRange(25,400)
    vtbar.SmallChange = 10
    vtbar.LargeChange = 50
    vtbar.TickFrequency = CInt(vtbar.Maximum / 20)
    vtbar.BackColor = Color.Pink
    vtbar.Value = 200
    AddHandler vtbar.ValueChanged, AddressOf vtbar_OnValueChanged
  end sub  "  close for constructor
  private sub htbar_OnValueChanged(ByVal sender as object, _
              ByVal e as EventArgs)
    Console.WriteLine(htbar.Value)
  end sub
  private sub vtbar_OnValueChanged(ByVal sender as object, _
              ByVal e as EventArgs)
    Console.WriteLine(vtbar.Value)
    Console.WriteLine(vtbar.LargeChange)
  end sub
  public shared sub Main() 
    Application.Run(new TrackBars())
  end sub
end class
Источник — «http://vbex.ru/index.php?title=VB.Net_by_API/System.Windows.Forms/TrackBar&oldid=2757»