PreviewRegionSelected Event

In This Topic

This event is raised when a highlighted region has been selected by a user using the mouse.

The event makes use of tunel routing strategy. Please check the corresponded GdViewer.RegionSelectedEventArgs for given parameters.

Highlighted regions for currently displayed document are identified and created when searching text, for example using the SearchText(String,Int32,Boolean) method or the second similar overloaded method as well. You can also define highlighted regions directly using the AddRegion(String,Double,Double,Double,Double,Color,RegionFillMode) method.

Syntax

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

'Declaration

 

Public Event PreviewRegionSelected As GdViewer.PreviewRegionSelectedHandler

public event GdViewer.PreviewRegionSelectedHandler PreviewRegionSelected

public event PreviewRegionSelected: GdViewer.PreviewRegionSelectedHandler;

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

public: __event GdViewer.PreviewRegionSelectedHandler* PreviewRegionSelected

public:

event GdViewer.PreviewRegionSelectedHandler^ PreviewRegionSelected

Event Data

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

Property	Description
Handled	(Inherited from System.Windows.RoutedEventArgs)
OriginalSource	(Inherited from System.Windows.RoutedEventArgs)
RegionID	The unique region identifier of the highlighted region selected by a user.
RoutedEvent	(Inherited from System.Windows.RoutedEventArgs)
Source	(Inherited from System.Windows.RoutedEventArgs)

Remarks

Be aware that the RegionsAreEditable property needs to be turned on to enable the region selection.

Example

Please follow the example for the RegionSelected event to motivate yourself on how to utilize this event in your GdViewer control.

Example

Please follow the example for the event to motivate yourself on how to utilize this event in your GdViewer control.

Reference

GdViewer Class
GdViewer Members
GdViewer.RegionSelectedEventArgs Class
SearchText(String,Int32,Boolean) Method
AddRegion(String,Double,Double,Double,Double,Color,RegionFillMode) Method
RegionsAreEditable Property
GdViewer.PreviewRegionSelectedHandler Delegate
GdViewer.RegionSelectedEventArgs Class
RegionSelected Event
PreviewRegionEdited Event
RegionEdited Event
RegionsAreEditable Property
RegionSelected Event