Leadtools.WinForms Namespace > RasterImageViewer Class : InteractivePage Event |
public event EventHandler<RasterViewerLineEventArgs> InteractivePage
'Declaration Public Event InteractivePage As EventHandler(Of RasterViewerLineEventArgs)
'Usage Dim instance As RasterImageViewer Dim handler As EventHandler(Of RasterViewerLineEventArgs) AddHandler instance.InteractivePage, handler
public event EventHandler<RasterViewerLineEventArgs> InteractivePage
add_InteractivePage(function(sender, e)) remove_InteractivePage(function(sender, e))
public: event EventHandler<RasterViewerLineEventArgs^>^ InteractivePage
The event handler receives an argument of type RasterViewerLineEventArgs containing data related to this event. The following RasterViewerLineEventArgs properties provide information specific to this event.
Property | Description |
---|---|
Begin | Returns the beginning point for the current interactive mode line. |
Cancel (Inherited from Leadtools.WinForms.RasterViewerInteractiveEventArgs) | Gets or sets a value indicating whether the interactive mode should be canceled. |
End | Returns the end point for the current interactive mode line. |
Status (Inherited from Leadtools.WinForms.RasterViewerInteractiveEventArgs) | Gets the current status of the interactive mode. |
Private Sub viewer_InteractivePage(ByVal sender As Object, ByVal e As RasterViewerLineEventArgs) Dim viewer As RasterImageViewer = CType(IIf(TypeOf sender Is RasterImageViewer, sender, Nothing), RasterImageViewer) If e.Status = RasterViewerInteractiveStatus.Begin Then viewer.Cursor = Cursors.SizeNS ElseIf e.Status = RasterViewerInteractiveStatus.End Then viewer.Cursor = Cursors.Default End If Console.WriteLine("InteractivePage: e.Begin {0}, e.End{1}, e.Status {2}, e.Cancel {3}", e.Begin, e.End, e.Status, e.Cancel) End Sub Public Sub RasterImageViewer_InteractivePage(ByVal viewer As RasterImageViewer) ' Load a multipage file Dim codecs As RasterCodecs = New RasterCodecs() viewer.Image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "eye.gif")) codecs.Dispose() viewer.InteractiveMode = RasterViewerInteractiveMode.Page AddHandler viewer.InteractivePage, AddressOf viewer_InteractivePage MessageBox.Show("Drag mouse across image to view different pages") ' After you are done, you must remove the event handler as in below ' ' viewer.InteractivePage -= new EventHandler<RasterViewerLineEventArgs>(viewer_InteractivePage); End Sub Public NotInheritable Class LEAD_VARS Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" End Class
private void viewer_InteractivePage(object sender, RasterViewerLineEventArgs e) { RasterImageViewer viewer = sender as RasterImageViewer; if (e.Status == RasterViewerInteractiveStatus.Begin) viewer.Cursor = Cursors.SizeNS; else if (e.Status == RasterViewerInteractiveStatus.End) viewer.Cursor = Cursors.Default; Console.WriteLine("InteractivePage: e.Begin {0}, e.End{1}, e.Status {2}, e.Cancel {3}", e.Begin, e.End, e.Status, e.Cancel); } public void RasterImageViewer_InteractivePage(RasterImageViewer viewer) { // Load a multipage file RasterCodecs codecs = new RasterCodecs(); viewer.Image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "eye.gif")); codecs.Dispose(); viewer.InteractiveMode = RasterViewerInteractiveMode.Page; viewer.InteractivePage += new EventHandler<RasterViewerLineEventArgs>(viewer_InteractivePage); MessageBox.Show("Drag mouse across image to view different pages"); // After you are done, you must remove the event handler as in below // // viewer.InteractivePage -= new EventHandler<RasterViewerLineEventArgs>(viewer_InteractivePage); } 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