Leadtools.Annotations Namespace > AnnAutomation Class : BeforeObjectChanged Event |
public event EventHandler<AnnBeforeObjectChangedEventArgs> BeforeObjectChanged
'Declaration Public Event BeforeObjectChanged As EventHandler(Of AnnBeforeObjectChangedEventArgs)
'Usage Dim instance As AnnAutomation Dim handler As EventHandler(Of AnnBeforeObjectChangedEventArgs) AddHandler instance.BeforeObjectChanged, handler
public event EventHandler<AnnBeforeObjectChangedEventArgs> BeforeObjectChanged
add_BeforeObjectChanged(function(sender, e)) remove_BeforeObjectChanged(function(sender, e))
public: event EventHandler<AnnBeforeObjectChangedEventArgs^>^ BeforeObjectChanged
The event handler receives an argument of type AnnBeforeObjectChangedEventArgs containing data related to this event. The following AnnBeforeObjectChangedEventArgs properties provide information specific to this event.
Property | Description |
---|---|
Cancel | Gets or sets a value indicating whether the change should be canceled. |
ChangeType | Gets the type of change. |
Designer | Gets the designer responsible for the change. |
Objects | Gets the objects that have been changed. |
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 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; }
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2