Mega Code Archive
Panel Refresh()
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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 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.ComponentModel.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
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