InteractivePan Event

C#
Visual Basic
Objective-C
Java
C++

public event EventHandler<RasterViewerLineEventArgs> InteractivePan

'Declaration
 
Public Event InteractivePan As EventHandler(Of RasterViewerLineEventArgs)

'Usage
 
Dim instance As RasterImageViewer
Dim handler As EventHandler(Of RasterViewerLineEventArgs)
 
AddHandler instance.InteractivePan, handler

public:
event EventHandler<RasterViewerLineEventArgs^>^ InteractivePan

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.

Occurs when the InteractiveMode property is set to RasterViewerInteractiveMode.Pan or RasterViewerInteractiveMode.Scale.

This sample changes the mouse cursor when panning, and displays the contents of the InteractivePan event in the console

C#
Visual Basic
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Imports Leadtools.WinForms
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Color
Imports Leadtools.Drawing

Private Sub viewer_InteractivePan(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.Hand
   ElseIf e.Status = RasterViewerInteractiveStatus.End Then
      viewer.Cursor = Cursors.Default
   End If
   Console.WriteLine("InteractivePan: 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_InteractivePan(ByVal viewer As RasterImageViewer)
   AddHandler viewer.InteractivePan, AddressOf viewer_InteractivePan
   viewer.InteractiveMode = RasterViewerInteractiveMode.Pan

   ' Do the panning

   ' After you are done, you must remove the event handler as in below
   ' viewer.InteractivePan -= new EventHandler<RasterViewerLineEventArgs>(viewer_InteractivePan);
End Sub

using Leadtools.WinForms;
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Color;
using Leadtools.Drawing;

private void viewer_InteractivePan(object sender, RasterViewerLineEventArgs e)
{
   RasterImageViewer viewer = sender as RasterImageViewer;
   if (e.Status == RasterViewerInteractiveStatus.Begin)
      viewer.Cursor = Cursors.Hand;
   else if (e.Status == RasterViewerInteractiveStatus.End)
      viewer.Cursor = Cursors.Default;
   Console.WriteLine("InteractivePan: e.Begin {0}, e.End{1}, e.Status {2}, e.Cancel {3}", e.Begin, e.End, e.Status, e.Cancel);
}
public void RasterImageViewer_InteractivePan(RasterImageViewer viewer)
{
   viewer.InteractivePan += new EventHandler<RasterViewerLineEventArgs>(viewer_InteractivePan);
   viewer.InteractiveMode = RasterViewerInteractiveMode.Pan;

   // Do the panning

   // After you are done, you must remove the event handler as in below
   // viewer.InteractivePan -= new EventHandler<RasterViewerLineEventArgs>(viewer_InteractivePan);
}

Target Platforms

Reference

RasterImageViewer Class
RasterImageViewer Members