Leadtools.WinForms Namespace > RasterImageViewer Class : AutoScrollSmallChange Property |
[BrowsableAttribute(false)] public virtual Size AutoScrollSmallChange {get;}
'Declaration <BrowsableAttribute(False)> Public Overridable ReadOnly Property AutoScrollSmallChange As Size
'Usage Dim instance As RasterImageViewer Dim value As Size value = instance.AutoScrollSmallChange
[BrowsableAttribute(false)] public virtual Size AutoScrollSmallChange {get;}
BrowsableAttribute() get_AutoScrollSmallChange();
[BrowsableAttribute(false)] public: virtual property Size AutoScrollSmallChange { Size get(); }
Private Class MyForm3 : Inherits Form Public viewer As RasterImageViewer Private panel As Panel Private myHScroll As HScrollBar Private myVScroll As VScrollBar Public Sub New(ByVal title As String) Text = title Me.Size = New Size(750, 450) panel = New Panel() panel.Dock = DockStyle.Fill Controls.Add(panel) ' Create the raster viewer viewer = New RasterImageViewer() viewer.Dock = DockStyle.Fill viewer.Width = 500 viewer.DoubleBuffer = True panel.Controls.Add(viewer) ' Load an image into the viewer Dim codecs As RasterCodecs = New RasterCodecs() viewer.Image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Sample1.cmp")) codecs.Dispose() viewer.AutoScroll = False Dim size As Size = viewer.AutoScrollMinSize ' Create two scrollbar controls for scrolling myHScroll = New HScrollBar() myHScroll.Location = New Point(100, 50) myHScroll.Dock = DockStyle.Top myHScroll.Height *= 2 myHScroll.Minimum = 0 myHScroll.Maximum = viewer.Image.Width AddHandler myHScroll.ValueChanged, AddressOf hScroll_ValueChanged panel.Controls.Add(myHScroll) myHScroll.BringToFront() myVScroll = New VScrollBar() myVScroll.Dock = DockStyle.Left myVScroll.Location = New Point(100, 100) myVScroll.Width *= 2 myVScroll.Minimum = 0 myVScroll.Maximum = viewer.Image.Height AddHandler myVScroll.ValueChanged, AddressOf vScroll_ValueChanged panel.Controls.Add(myVScroll) myVScroll.BringToFront() viewer.BringToFront() OnSizeChanged(EventArgs.Empty) End Sub Private Sub vScroll_ValueChanged(ByVal sender As Object, ByVal e As EventArgs) viewer.ScrollPosition = New Point(myHScroll.Value, myVScroll.Value) End Sub Private Sub hScroll_ValueChanged(ByVal sender As Object, ByVal e As EventArgs) viewer.ScrollPosition = New Point(myHScroll.Value, myVScroll.Value) End Sub Protected Overrides Sub OnSizeChanged(ByVal e As EventArgs) If (Not myHScroll Is Nothing) AndAlso (Not myVScroll Is Nothing) Then myHScroll.SmallChange = viewer.AutoScrollSmallChange.Width myHScroll.LargeChange = viewer.AutoScrollLargeChange.Width myVScroll.SmallChange = viewer.AutoScrollSmallChange.Height myVScroll.LargeChange = viewer.AutoScrollLargeChange.Height Console.WriteLine("AutoScrollSmallChange {0}", viewer.AutoScrollSmallChange) Console.WriteLine("AutoScrollLargeChange {0}", viewer.AutoScrollLargeChange) Console.WriteLine("AutoScrollMinSize {0}", viewer.AutoScrollMinSize) Console.WriteLine("SmallScrollChangeRatio {0}", viewer.SmallScrollChangeRatio) Console.WriteLine("HScroll {0}", viewer.HScroll) Console.WriteLine("VScroll {0}", viewer.VScroll) Console.WriteLine("") myHScroll.Enabled = viewer.HScroll myVScroll.Enabled = viewer.VScroll End If MyBase.OnSizeChanged(e) End Sub End Class Public Sub RasterImageViewer_HScroll(ByVal title As String) Dim form As MyForm3 = New MyForm3(title) form.ShowDialog() End Sub Public NotInheritable Class LEAD_VARS Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" End Class
class MyForm3 : Form { public RasterImageViewer viewer; Panel panel; HScrollBar hScroll; VScrollBar vScroll; public MyForm3(string title) { Text = title; Size = new Size(750, 450); panel = new Panel(); panel.Dock = DockStyle.Fill; Controls.Add(panel); // Create the raster viewer viewer = new RasterImageViewer(); viewer.Dock = DockStyle.Fill; viewer.Width = 500; viewer.DoubleBuffer = true; panel.Controls.Add(viewer); // Load an image into the viewer RasterCodecs codecs = new RasterCodecs(); viewer.Image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Sample1.cmp")); codecs.Dispose(); viewer.AutoScroll = false; Size size = viewer.AutoScrollMinSize; // Create two scrollbar controls for scrolling hScroll = new HScrollBar(); hScroll.Location = new Point(100, 50); hScroll.Dock = DockStyle.Top; hScroll.Height *= 2; hScroll.Minimum = 0; hScroll.Maximum = viewer.Image.Width; hScroll.ValueChanged += new EventHandler(hScroll_ValueChanged); panel.Controls.Add(hScroll); hScroll.BringToFront(); vScroll = new VScrollBar(); vScroll.Dock = DockStyle.Left; vScroll.Location = new Point(100, 100); vScroll.Width *= 2; vScroll.Minimum = 0; vScroll.Maximum = viewer.Image.Height; vScroll.ValueChanged += new EventHandler(vScroll_ValueChanged); panel.Controls.Add(vScroll); vScroll.BringToFront(); viewer.BringToFront(); OnSizeChanged(EventArgs.Empty); } void vScroll_ValueChanged(object sender, EventArgs e) { viewer.ScrollPosition = new Point(hScroll.Value, vScroll.Value); } void hScroll_ValueChanged(object sender, EventArgs e) { viewer.ScrollPosition = new Point(hScroll.Value, vScroll.Value); } protected override void OnSizeChanged(EventArgs e) { if((hScroll != null) && (vScroll != null)) { hScroll.SmallChange = viewer.AutoScrollSmallChange.Width; hScroll.LargeChange = viewer.AutoScrollLargeChange.Width; vScroll.SmallChange = viewer.AutoScrollSmallChange.Height; vScroll.LargeChange = viewer.AutoScrollLargeChange.Height; Console.WriteLine("AutoScrollSmallChange {0}", viewer.AutoScrollSmallChange); Console.WriteLine("AutoScrollLargeChange {0}", viewer.AutoScrollLargeChange); Console.WriteLine("AutoScrollMinSize {0}", viewer.AutoScrollMinSize); Console.WriteLine("SmallScrollChangeRatio {0}", viewer.SmallScrollChangeRatio); Console.WriteLine("HScroll {0}", viewer.HScroll); Console.WriteLine("VScroll {0}", viewer.VScroll); Console.WriteLine(""); hScroll.Enabled = viewer.HScroll; vScroll.Enabled = viewer.VScroll; } base.OnSizeChanged(e); } } public void RasterImageViewer_HScroll(string title) { MyForm3 form = new MyForm3(title); form.ShowDialog(); } static class LEAD_VARS { public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; }
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2