Scroll Event (GdViewer)

In This Topic

This event is raised when the user scrolls through the GdViewer control area using the mouse move or when they scroll using the vertical or the horizontal scrollbars directly.

The event makes use of bubble routing strategy. Please check the corresponded GdViewer.ScrollEventArgs for more details.

Syntax

Visual Basic
C#
Delphi
JScript
Managed Extensions for C++
C++/CLI

'Declaration
 
Public Event Scroll As GdViewer.ScrollHandler

public event GdViewer.ScrollHandler Scroll

public event Scroll: GdViewer.ScrollHandler;

In JScript, you can handle the events defined by another class, but you cannot define your own.

public: __event GdViewer.ScrollHandler* Scroll

public:
event GdViewer.ScrollHandler^ Scroll

Event Data

The event handler receives an argument of type GdViewer.ScrollEventArgs containing data related to this event. The following GdViewer.ScrollEventArgs properties provide information specific to this event.

Property	Description
Handled	(Inherited from System.Windows.RoutedEventArgs)
OriginalSource	(Inherited from System.Windows.RoutedEventArgs)
RoutedEvent	(Inherited from System.Windows.RoutedEventArgs)
Source	(Inherited from System.Windows.RoutedEventArgs)

Example

How to utilize this event in your GdViewer control.

VB.NET
C#

'We assume that the GdViewer1 control has been properly integrated
'and the Scroll event has been properly added.
            
'Define the event.
Sub GdViewer1_Scroll(ByVal sender As Object, ByVal e As GdPicture14.WPF.GdViewer.ScrollEventArgs)
    'Do your stuff here.
End Sub

//We assume that the GdViewer1 control has been properly integrated
//and the Scroll event has been properly added.
            
//Define the event.
void GdViewer1_Scroll(object sender, GdPicture14.WPF.GdViewer.ScrollEventArgs e)
{
    //Do your stuff here.
}

Reference

GdViewer Class
GdViewer Members
GdViewer.ScrollHandler Delegate
GdViewer.ScrollEventArgs Class
SetHorizontalScrollBarPosition Method
SetVerticalScrollBarPosition Method