private void Initialize()
{
// If the extension hasn't been started yet or it's been turned off, bail
if (s_extension == null || this.State != ExtensionState.Enabled)
return;
// Reset event handlers
IActiveViewEvents_Event avEvent = ArcMap.Document.FocusMap as IActiveViewEvents_Event;
avEvent.ItemAdded += AvEvent_ItemAdded;
avEvent.ItemDeleted += AvEvent_ItemAdded;
avEvent.ContentsChanged += avEvent_ContentsChanged;
// Update the UI
m_map = ArcMap.Document.FocusMap;
FillLayerComboBox();
FillLanguageComboBox();
}