Leadtools.Windows.Annotations Requires Document/Medical license. | Send comments on this topic. | Back to Introduction - All Topics | Help Version 16.5.9.25
OnBeforeObjectChanged Method
See Also 
Leadtools.Windows.Annotations Namespace > AnnAutomation Class : OnBeforeObjectChanged Method



e
An AnnBeforeObjectChangedEventArgs that contains the event data.
e
An AnnBeforeObjectChangedEventArgs that contains the event data.
Raises the AnnAutomation.BeforeObjectChanged event.

Syntax

Visual Basic (Declaration) 
Protected Overridable Sub OnBeforeObjectChanged( _
   ByVal e As AnnBeforeObjectChangedEventArgs _
)
Visual Basic (Usage)Copy Code
Dim instance As AnnAutomation
Dim e As AnnBeforeObjectChangedEventArgs
 
instance.OnBeforeObjectChanged(e)
C# 
protected virtual void OnBeforeObjectChanged( 
   AnnBeforeObjectChangedEventArgs e
)
C++/CLI 
protected:
virtual void OnBeforeObjectChanged( 
   AnnBeforeObjectChangedEventArgs^ e
)

Parameters

e
An AnnBeforeObjectChangedEventArgs that contains the event data.

Example

For C#/VB examples, refer to AnnAutomation.BeforeObjectChanged.

Remarks

Raising an event invokes the event handler through a delegate. The OnBeforeObjectChanged method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class. Notes to Inheritors: When overriding OnBeforeObjectChanged in a derived class, be sure to call the base class's OnBeforeObjectChanged method so that registered delegates receive the event.

Requirements

Target Platforms: Microsoft .NET Framework 3.0, Windows XP, Windows Vista, and Windows Server 2003 family

See Also

OnBeforeObjectChanged requires a Document/Medical product license and unlock key. For more information, refer to: Imaging Pro/Document/Medical Features and Unlocking Special LEAD Features.