Occurs before an AnnObject is about to be changed.

Syntax

Visual Basic (Declaration)
Public Event BeforeObjectChanged() As EventHandler(Of AnnBeforeObjectChangedEventArgs)

Visual Basic (Usage)	Copy Code
`Dim instance As AnnAutomation Dim handler As EventHandler(Of AnnBeforeObjectChangedEventArgs) AddHandler instance.BeforeObjectChanged, handler`

C#
public event EventHandler<AnnBeforeObjectChangedEventArgs> BeforeObjectChanged()

C++/CLI
public: event EventHandler<AnnBeforeObjectChangedEventArgs>^ BeforeObjectChanged();

Example

This example will prevent changing the pen of all annotation objects.

Visual Basic Copy Code

Visual Basic	Copy Code
Public Sub AnnAutomation_BeforeObjectChanged(ByVal manager As AnnAutomationManager) ' subscribe to the BeforeObjectChanged of all automations For Each automation As AnnAutomation In manager.Automations AddHandler automation.BeforeObjectChanged, AddressOf automation_BeforeObjectChanged Next automation End Sub Private Sub automation_BeforeObjectChanged(ByVal sender As Object, ByVal e As AnnBeforeObjectChangedEventArgs) ' prevent changing the pen If e.ChangeType = AnnObjectChangedType.Pen Then e.Cancel = True End If End Sub

Public Sub AnnAutomation_BeforeObjectChanged(ByVal manager As AnnAutomationManager)

   ' subscribe to the BeforeObjectChanged of all automations

   For Each automation As AnnAutomation In manager.Automations

      AddHandler automation.BeforeObjectChanged, AddressOf automation_BeforeObjectChanged

   Next automation

End Sub

Private Sub automation_BeforeObjectChanged(ByVal sender As Object, ByVal e As AnnBeforeObjectChangedEventArgs)

   ' prevent changing the pen

   If e.ChangeType = AnnObjectChangedType.Pen Then

      e.Cancel = True

   End If

End Sub

C# Copy Code

C#	Copy Code
public void AnnAutomation_BeforeObjectChanged(AnnAutomationManager manager) { // subscribe to the BeforeObjectChanged of all automations foreach(AnnAutomation automation in manager.Automations) automation.BeforeObjectChanged += new EventHandler<AnnBeforeObjectChangedEventArgs>(automation_BeforeObjectChanged); } private void automation_BeforeObjectChanged(object sender, AnnBeforeObjectChangedEventArgs e) { // prevent changing the pen if(e.ChangeType == AnnObjectChangedType.Pen) e.Cancel = true; }

public void AnnAutomation_BeforeObjectChanged(AnnAutomationManager manager) 
     { 
  // subscribe to the BeforeObjectChanged of all automations 
  foreach(AnnAutomation automation in manager.Automations) 
     automation.BeforeObjectChanged += new EventHandler<AnnBeforeObjectChangedEventArgs>(automation_BeforeObjectChanged); 
     } 
     private void automation_BeforeObjectChanged(object sender, AnnBeforeObjectChangedEventArgs e) 
     { 
  // prevent changing the pen 
  if(e.ChangeType == AnnObjectChangedType.Pen) 
     e.Cancel = true; 
     }

Remarks

This event will be fired before an AnnObject is about to be modified by this AnnAutomation

Requirements

Target Platforms: Microsoft .NET Framework 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family

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BeforeObjectChanged Event
See Also Example

Syntax

Example

Remarks

Requirements

See Also

Reference