Available in LEADTOOLS Vector Imaging toolkits.
Vector Images: Change Notification
LVectorBase::EnableAlwaysEndNotification
LVectorBase::EnableChangeNotification
LVectorBase::EndChanging
LVectorBase::IsAlwaysEndNotification
LVectorBase::IsChangeNotificationEnabled
LVectorBase::StartChanging
LVectorWindow::EnableAlwaysEndNotification
LVectorWindow::EnableChangeNotification