Mega Code Archive
Use ScrollBars to control the scroll of an Image
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imports System
imports System.Drawing
imports System.Windows.Forms
public class ScrollBars : inherits Form
dim pnl as Panel
dim pb as PictureBox
dim hbar as HScrollBar
dim vbar as VScrollBar
dim img as Image
public sub New()
Size = new Size(480,300)
img = Image.FromFile("yourfile.jpg")
pnl = new Panel()
pnl.Parent = me
pnl.Size = new Size(400,200)
pnl.Location = new Point(10,10)
pnl.BorderStyle = BorderStyle.FixedSingle
pb = new PictureBox()
pb.Parent = pnl
pb.Size = new Size(img.Size.Width, img.Size.Height)
pb.Location = new Point(0, 0)
pb.SizeMode = PictureBoxSizeMode.CenterImage
pb.Image = img
hbar = new HScrollBar()
hbar.Parent = me
hbar.Location = new Point(pnl.Left, pnl.Bottom + 25)
hbar.Size = new Size(pnl.Width, 25)
hbar.Minimum = 0
hbar.Maximum = 100
hbar.SmallChange = 1
hbar.LargeChange = 10
hbar.Value = 10
AddHandler hbar.ValueChanged, AddressOf hbar_OnValueChanged
vbar = new VScrollBar()
vbar.Parent = me
vbar.Location = new Point(pnl.Right + 25, pnl.Top)
vbar.Size = new Size(25, pnl.Height)
vbar.Minimum = 0
vbar.Maximum = 100
vbar.SmallChange = 1
vbar.LargeChange = 10
vbar.Value = CType((vbar.Maximum - vbar.Minimum) / 2, integer)
AddHandler vbar.ValueChanged, AddressOf vbar_OnValueChanged
end sub ' close for constructor
private sub hbar_OnValueChanged(ByVal sender as object,ByVal e as EventArgs)
pb.Location = new Point(CType((pnl.Size.Width - img.Size.Width) * _
hbar.Value /(hbar.Maximum - hbar.LargeChange + 1), integer), _
pb.Top)
end sub
private sub vbar_OnValueChanged(ByVal sender as object,ByVal e as EventArgs)
pb.Location = new Point(pb.Left, _
CType((pnl.Size.Height - img.Size.Height) * _
vbar.Value / (vbar.Maximum - vbar.LargeChange + 1), integer))
end sub
public shared sub Main()
Application.Run(new ScrollBars())
end sub
end class
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