Occurs before an AnnObjectBase 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 stroke of all annotation objects.

Visual Basic Copy Code

Visual Basic	Copy Code
Private 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 stroke If e.ChangeType = AnnObjectChangedType.Stroke Then e.Cancel = True End If End Sub

Private 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 stroke

   If e.ChangeType = AnnObjectChangedType.Stroke Then

      e.Cancel = True

   End If

End Sub

C# Copy Code

C#	Copy Code
private 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 stroke if(e.ChangeType == AnnObjectChangedType.Stroke) e.Cancel = true; }

private 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 stroke 
   if(e.ChangeType == AnnObjectChangedType.Stroke) 
      e.Cancel = true; 
}

Remarks

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

Requirements

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

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BeforeObjectChanged Event
See Also Example

Syntax

Example

Remarks

Requirements

See Also

Reference