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

Panel.AutoScroll

  
Imports System
Imports System.Drawing
Imports System.Windows.Forms
Imports System.ruponentModel
Imports System.Drawing.Drawing2D
Imports System.IO
Public Class MainClass
    
    Shared Sub Main()
        Dim form1 As Form = New Form1
        Application.Run(form1)

    End Sub
End Class

Public Class Form1
    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
    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 Panel1 As System.Windows.Forms.Panel
    Friend WithEvents Button6 As System.Windows.Forms.Button
    Friend WithEvents Button5 As System.Windows.Forms.Button
    Friend WithEvents Button4 As System.Windows.Forms.Button
    Friend WithEvents Button3 As System.Windows.Forms.Button
    Friend WithEvents Button2 As System.Windows.Forms.Button
    Friend WithEvents Button1 As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Panel1 = New System.Windows.Forms.Panel()
        Me.Button6 = New System.Windows.Forms.Button()
        Me.Button5 = New System.Windows.Forms.Button()
        Me.Button4 = New System.Windows.Forms.Button()
        Me.Button3 = New System.Windows.Forms.Button()
        Me.Button2 = New System.Windows.Forms.Button()
        Me.Button1 = New System.Windows.Forms.Button()
        Me.Panel1.SuspendLayout()
        Me.SuspendLayout()
        "
        "Panel1
        "
        Me.Panel1.Anchor = (((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom) _
                    Or System.Windows.Forms.AnchorStyles.Left) _
                    Or System.Windows.Forms.AnchorStyles.Right)
        Me.Panel1.AutoScroll = True
        Me.Panel1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.Panel1.Controls.AddRange(New System.Windows.Forms.Control() {Me.Button6, Me.Button5, Me.Button4, Me.Button3, Me.Button2, Me.Button1})
        Me.Panel1.Location = New System.Drawing.Point(8, 8)
        Me.Panel1.Name = "Panel1"
        Me.Panel1.Size = New System.Drawing.Size(284, 172)
        Me.Panel1.TabIndex = 1
        "
        "Button6
        "
        Me.Button6.FlatStyle = System.Windows.Forms.FlatStyle.System
        Me.Button6.Location = New System.Drawing.Point(16, 180)
        Me.Button6.Name = "Button6"
        Me.Button6.Size = New System.Drawing.Size(168, 24)
        Me.Button6.TabIndex = 5
        Me.Button6.Text = "Button6"
        "
        "Button5
        "
        Me.Button5.FlatStyle = System.Windows.Forms.FlatStyle.System
        Me.Button5.Location = New System.Drawing.Point(16, 148)
        Me.Button5.Name = "Button5"
        Me.Button5.Size = New System.Drawing.Size(168, 24)
        Me.Button5.TabIndex = 4
        Me.Button5.Text = "Button5"
        "
        "Button4
        "
        Me.Button4.FlatStyle = System.Windows.Forms.FlatStyle.System
        Me.Button4.Location = New System.Drawing.Point(16, 116)
        Me.Button4.Name = "Button4"
        Me.Button4.Size = New System.Drawing.Size(168, 24)
        Me.Button4.TabIndex = 3
        Me.Button4.Text = "Button4"
        "
        "Button3
        "
        Me.Button3.FlatStyle = System.Windows.Forms.FlatStyle.System
        Me.Button3.Location = New System.Drawing.Point(16, 84)
        Me.Button3.Name = "Button3"
        Me.Button3.Size = New System.Drawing.Size(168, 24)
        Me.Button3.TabIndex = 2
        Me.Button3.Text = "Button3"
        "
        "Button2
        "
        Me.Button2.FlatStyle = System.Windows.Forms.FlatStyle.System
        Me.Button2.Location = New System.Drawing.Point(16, 52)
        Me.Button2.Name = "Button2"
        Me.Button2.Size = New System.Drawing.Size(168, 24)
        Me.Button2.TabIndex = 1
        Me.Button2.Text = "Button2"
        "
        "Button1
        "
        Me.Button1.FlatStyle = System.Windows.Forms.FlatStyle.System
        Me.Button1.Location = New System.Drawing.Point(16, 20)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(168, 24)
        Me.Button1.TabIndex = 0
        Me.Button1.Text = "Button1"
        "
        "ScrollablePanel
        "
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 14)
        Me.ClientSize = New System.Drawing.Size(300, 186)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.Panel1})
        Me.Font = New System.Drawing.Font("Tahoma", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Name = "ScrollablePanel"
        Me.Text = "Scrollable Panel"
        Me.Panel1.ResumeLayout(False)
        Me.ResumeLayout(False)
    End Sub
#End Region
End Class

Panel.BorderStyle

  
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class PanelInAction
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class
Public Class Form1
    Inherits System.Windows.Forms.Form
    Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
    Friend WithEvents Label1 As System.Windows.Forms.Label

    Dim Panel1 As New Panel
    Dim Panel2 As New Panel
    Dim WithEvents RadioButton1 As New RadioButton
    Dim WithEvents RadioButton2 As New RadioButton
    Dim WithEvents RadioButton3 As New RadioButton
    Dim WithEvents RadioButton4 As New RadioButton
    Dim WithEvents RadioButton5 As New RadioButton
    Dim WithEvents RadioButton6 As New RadioButton
    Public Sub New()
        MyBase.New()
        Me.TextBox1 = New System.Windows.Forms.TextBox
        Me.Label1 = New System.Windows.Forms.Label
        Me.SuspendLayout()
        Me.TextBox1.Location = New System.Drawing.Point(8, 200)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(272, 20)
        Me.TextBox1.TabIndex = 0
        Me.TextBox1.Text = ""
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(292, 273)
        Me.Controls.Add(Me.Label1)
        Me.Controls.Add(Me.TextBox1)
        Me.Name = "Form1"
        Me.Text = "Form1"
        Me.ResumeLayout(False)

        Panel1.Location = New Point(20, 60)
        Panel1.Size = New Size(110, 100)
        Panel1.BorderStyle = BorderStyle.FixedSingle
        Panel2.Location = New Point(140, 60)
        Panel2.Size = New Size(110, 100)
        Panel2.BorderStyle = BorderStyle.FixedSingle
        RadioButton1.Location = New Point(6, 16)
        RadioButton1.Text = "Radio Button 1"
        RadioButton1.Size = New Size(120, 16)
        RadioButton2.Location = New Point(6, 36)
        RadioButton2.Text = "Radio Button 2"
        RadioButton2.Size = New Size(120, 20)
        RadioButton3.Location = New Point(6, 56)
        RadioButton3.Text = "Radio Button 3"
        RadioButton3.Size = New Size(120, 20)
        RadioButton4.Location = New Point(6, 16)
        RadioButton4.Text = "Radio Button 4"
        RadioButton4.Size = New Size(120, 16)
        RadioButton5.Location = New Point(6, 36)
        RadioButton5.Text = "Radio Button 5"
        RadioButton5.Size = New Size(120, 20)
        RadioButton6.Location = New Point(6, 56)
        RadioButton6.Text = "Radio Button 6"
        RadioButton6.Size = New Size(120, 20)
        Panel1.Controls.Add(RadioButton1)
        Panel1.Controls.Add(RadioButton2)
        Panel1.Controls.Add(RadioButton3)
        Panel2.Controls.Add(RadioButton4)
        Panel2.Controls.Add(RadioButton5)
        Panel2.Controls.Add(RadioButton6)
        Controls.Add(Panel1)
        Controls.Add(Panel2)
        AddHandler RadioButton1.CheckedChanged, AddressOf _
            RadioButton1_CheckedChanged
        AddHandler RadioButton2.CheckedChanged, AddressOf _
            RadioButton2_CheckedChanged
        AddHandler RadioButton3.CheckedChanged, AddressOf _
            RadioButton3_CheckedChanged
        AddHandler RadioButton4.CheckedChanged, AddressOf _
            RadioButton4_CheckedChanged
        AddHandler RadioButton5.CheckedChanged, AddressOf _
            RadioButton5_CheckedChanged
        AddHandler RadioButton6.CheckedChanged, AddressOf _
            RadioButton6_CheckedChanged
    End Sub
    Private Sub RadioButton1_CheckedChanged(ByVal sender As _
        System.Object, ByVal e As System.EventArgs) 
        TextBox1.Text = "You clicked radio button 1"
    End Sub
    Private Sub RadioButton2_CheckedChanged(ByVal sender As _
        System.Object, ByVal e As System.EventArgs) 
        TextBox1.Text = "You clicked radio button 2"
    End Sub
    Private Sub RadioButton3_CheckedChanged(ByVal sender As _
        System.Object, ByVal e As System.EventArgs) 
        TextBox1.Text = "You clicked radio button 3"
    End Sub
    Private Sub RadioButton4_CheckedChanged(ByVal sender As _
        System.Object, ByVal e As System.EventArgs) 
        TextBox1.Text = "You clicked radio button 4"
    End Sub
    Private Sub RadioButton5_CheckedChanged(ByVal sender As _
        System.Object, ByVal e As System.EventArgs) 
        TextBox1.Text = "You clicked radio button 5"
    End Sub
    Private Sub RadioButton6_CheckedChanged(ByVal sender As _
        System.Object, ByVal e As System.EventArgs) 
        TextBox1.Text = "You clicked radio button 6"
    End Sub
End Class

Panel.Controls.Add

  

Imports System
Imports System.Data
Imports System.Windows.Forms
Imports System.Drawing
Imports System.Drawing.Printing
Public Class MainClass
    
    Shared Sub Main()
       Dim form1 As Form = New Form1
       Application.Run(form1)    
    End Sub
End Class

Public Class Form1
    Private Sub btnScroll_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnScroll.Click
        Panel1.AutoScrollPosition = New Point(Integer.Parse(txtX.Text), Integer.Parse(txtY.Text))
    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.Panel1 = New System.Windows.Forms.Panel
        Me.Label1 = New System.Windows.Forms.Label
        Me.Label2 = New System.Windows.Forms.Label
        Me.Label3 = New System.Windows.Forms.Label
        Me.txtX = New System.Windows.Forms.TextBox
        Me.txtY = New System.Windows.Forms.TextBox
        Me.btnScroll = New System.Windows.Forms.Button
        Me.Label4 = New System.Windows.Forms.Label
        Me.Label5 = New System.Windows.Forms.Label
        Me.Panel1.SuspendLayout()
        Me.SuspendLayout()
        "
        "Panel1
        "
        Me.Panel1.Anchor = CType((((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom) _
                    Or System.Windows.Forms.AnchorStyles.Left) _
                    Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)
        Me.Panel1.AutoScroll = True
        Me.Panel1.Controls.Add(Me.Label5)
        Me.Panel1.Controls.Add(Me.Label4)
        Me.Panel1.Controls.Add(Me.Label2)
        Me.Panel1.Controls.Add(Me.Label1)
        Me.Panel1.Location = New System.Drawing.Point(8, 8)
        Me.Panel1.Name = "Panel1"
        Me.Panel1.Size = New System.Drawing.Size(272, 216)
        Me.Panel1.TabIndex = 0
        "
        "Label1
        "
        Me.Label1.AutoSize = True
        Me.Label1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.Label1.Location = New System.Drawing.Point(0, 0)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(29, 15)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "(0, 0)"
        "
        "Label2
        "
        Me.Label2.AutoSize = True
        Me.Label2.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.Label2.Location = New System.Drawing.Point(200, 200)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(53, 15)
        Me.Label2.TabIndex = 1
        Me.Label2.Text = "(200, 200)"
        "
        "Label3
        "
        Me.Label3.Anchor = CType((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left), System.Windows.Forms.AnchorStyles)
        Me.Label3.AutoSize = True
        Me.Label3.Location = New System.Drawing.Point(0, 232)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(44, 13)
        Me.Label3.TabIndex = 1
        Me.Label3.Text = "Scroll to:"
        "
        "txtX
        "
        Me.txtX.Anchor = CType((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left), System.Windows.Forms.AnchorStyles)
        Me.txtX.Location = New System.Drawing.Point(48, 232)
        Me.txtX.Name = "txtX"
        Me.txtX.Size = New System.Drawing.Size(24, 20)
        Me.txtX.TabIndex = 2
        Me.txtX.Text = "50"
        "
        "txtY
        "
        Me.txtY.Anchor = CType((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left), System.Windows.Forms.AnchorStyles)
        Me.txtY.Location = New System.Drawing.Point(72, 232)
        Me.txtY.Name = "txtY"
        Me.txtY.Size = New System.Drawing.Size(24, 20)
        Me.txtY.TabIndex = 3
        Me.txtY.Text = "50"
        "
        "btnScroll
        "
        Me.btnScroll.Anchor = CType((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left), System.Windows.Forms.AnchorStyles)
        Me.btnScroll.Location = New System.Drawing.Point(96, 232)
        Me.btnScroll.Name = "btnScroll"
        Me.btnScroll.Size = New System.Drawing.Size(72, 24)
        Me.btnScroll.TabIndex = 4
        Me.btnScroll.Text = "Scroll"
        "
        "Label4
        "
        Me.Label4.AutoSize = True
        Me.Label4.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.Label4.Location = New System.Drawing.Point(50, 50)
        Me.Label4.Name = "Label4"
        Me.Label4.Size = New System.Drawing.Size(41, 15)
        Me.Label4.TabIndex = 2
        Me.Label4.Text = "(50, 50)"
        "
        "Label5
        "
        Me.Label5.AutoSize = True
        Me.Label5.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.Label5.Location = New System.Drawing.Point(100, 100)
        Me.Label5.Name = "Label5"
        Me.Label5.Size = New System.Drawing.Size(53, 15)
        Me.Label5.TabIndex = 3
        Me.Label5.Text = "(100, 100)"
        "
        "Form1
        "
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(289, 256)
        Me.Controls.Add(Me.btnScroll)
        Me.Controls.Add(Me.txtY)
        Me.Controls.Add(Me.txtX)
        Me.Controls.Add(Me.Label3)
        Me.Controls.Add(Me.Panel1)
        Me.Name = "Form1"
        Me.Text = "UsePanel"
        Me.Panel1.ResumeLayout(False)
        Me.Panel1.PerformLayout()
        Me.ResumeLayout(False)
        Me.PerformLayout()
    End Sub
    Friend WithEvents Panel1 As System.Windows.Forms.Panel
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents txtX As System.Windows.Forms.TextBox
    Friend WithEvents txtY As System.Windows.Forms.TextBox
    Friend WithEvents btnScroll As System.Windows.Forms.Button
    Friend WithEvents Label5 As System.Windows.Forms.Label
    Friend WithEvents Label4 As System.Windows.Forms.Label
End Class

Panel.Refresh()

  
Imports System
Imports System.Collections
Imports System.ruponentModel
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 PanningForm()
        Application.Run(myform)
    End Sub
End Class
Public Class PanningForm
    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
    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 upButton As System.Windows.Forms.Button
    Friend WithEvents panel1 As System.Windows.Forms.Panel
    Friend WithEvents downButton As System.Windows.Forms.Button
    Friend WithEvents leftButton As System.Windows.Forms.Button
    Friend WithEvents rightButton As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.upButton = New System.Windows.Forms.Button()
        Me.panel1 = New System.Windows.Forms.Panel()
        Me.downButton = New System.Windows.Forms.Button()
        Me.leftButton = New System.Windows.Forms.Button()
        Me.rightButton = New System.Windows.Forms.Button()
        Me.SuspendLayout()
        "
        "upButton
        "
        Me.upButton.Anchor = System.Windows.Forms.AnchorStyles.Top
        Me.upButton.Location = New System.Drawing.Point(132, 10)
        Me.upButton.Name = "upButton"
        Me.upButton.Size = New System.Drawing.Size(24, 23)
        Me.upButton.TabIndex = 5
        Me.upButton.Text = "^"
        "
        "panel1
        "
        Me.panel1.Anchor = (((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom) _
                    Or System.Windows.Forms.AnchorStyles.Left) _
                    Or System.Windows.Forms.AnchorStyles.Right)
        Me.panel1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
        Me.panel1.Location = New System.Drawing.Point(36, 43)
        Me.panel1.Name = "panel1"
        Me.panel1.Size = New System.Drawing.Size(216, 184)
        Me.panel1.TabIndex = 2
        "
        "downButton
        "
        Me.downButton.Anchor = System.Windows.Forms.AnchorStyles.Bottom
        Me.downButton.Location = New System.Drawing.Point(132, 234)
        Me.downButton.Name = "downButton"
        Me.downButton.Size = New System.Drawing.Size(24, 23)
        Me.downButton.TabIndex = 6
        Me.downButton.Text = "v"
        "
        "leftButton
        "
        Me.leftButton.Anchor = System.Windows.Forms.AnchorStyles.Left
        Me.leftButton.Location = New System.Drawing.Point(6, 124)
        Me.leftButton.Name = "leftButton"
        Me.leftButton.Size = New System.Drawing.Size(24, 23)
        Me.leftButton.TabIndex = 3
        Me.leftButton.Text = "<"
        "
        "rightButton
        "
        Me.rightButton.Anchor = System.Windows.Forms.AnchorStyles.Right
        Me.rightButton.Location = New System.Drawing.Point(262, 124)
        Me.rightButton.Name = "rightButton"
        Me.rightButton.Size = New System.Drawing.Size(24, 23)
        Me.rightButton.TabIndex = 4
        Me.rightButton.Text = ">"
        "
        "PanningForm
        "
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(292, 266)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.upButton, Me.panel1, Me.downButton, Me.leftButton, Me.rightButton})
        Me.Name = "PanningForm"
        Me.Text = "PanningForm"
        Me.ResumeLayout(False)
    End Sub
#End Region
    Dim bmp As Bitmap = New Bitmap("figure2.bmp")
    Dim offset As Size = New Size(0, 0)
    Private Sub panel1_Paint(ByVal sender As Object, ByVal e As PaintEventArgs) Handles panel1.Paint
        Dim g As Graphics = e.Graphics
        Dim destRect As Rectangle = Me.panel1.ClientRectangle
        Dim srcRect As Rectangle = New Rectangle(offset.Width, offset.Height, destRect.Width, destRect.Height)
        g.DrawImage(bmp, destRect, srcRect, g.PageUnit)
    End Sub
    Private Sub upButton_Click(ByVal sender As Object, ByVal e As EventArgs) Handles upButton.Click
        offset.Height = offset.Height + 10
        panel1.Refresh()
    End Sub
    Private Sub downButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles downButton.Click
        offset.Height = offset.Height - 10
        panel1.Refresh()
    End Sub
    Private Sub rightButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles rightButton.Click
        offset.Width = offset.Width + 10
        panel1.Refresh()
    End Sub
    Private Sub leftButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles leftButton.Click
        offset.Width = offset.Width - 10
        panel1.Refresh()
    End Sub
End Class