Leadtools.Windows.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
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. |
Imports Leadtools.Windows.Controls Imports Leadtools.Windows.Annotations 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
using Leadtools.Windows.Controls; using Leadtools.Windows.Annotations; using Leadtools.Demos; using Leadtools.Help; 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; }
using Leadtools.Windows.Controls; using Leadtools.Windows.Annotations; using Leadtools.Examples; using Leadtools.Silverlight.Demos; 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; }
Imports Leadtools.Windows.Controls Imports Leadtools.Windows.Annotations Imports Leadtools.Silverlight.Demos 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