Cool... I just didn't want to mention anything that doesn't apply. You can find some things on it here: http://adndevblog.typepad.com/autocad/
After doing a search I found these specifically:
http://adndevblog.typepad.com/autocad/2012/08/managing-events-at-a-per-document-level.html
http://adndevblog.typepad.com/autocad/2012/05/handling-events-in-vbnet.html
(there was more so who knows there may be something more specific to what you're looking for. Also, I didn't look at these in any great detail so hopefully their accurate).
Here's something I did some time back in a project where I needed to track a few application-level events... specifically window moved and sized events as well as determining whether or not AutoCAD is quiescent before moving on to a specific process. I've modified it so that you can use it to illustrate in your own project (no command is necessary... just netload and try a few things out in AutoCAD).
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.Internal.Reactors;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.EditorInput;
[assembly: ExtensionApplication(typeof(AutoCADEvents.CADApplicationExtension))]
namespace AutoCADEvents
{
public sealed class CADApplicationExtension : IExtensionApplication
{
#region IExtensionApplication Interface Implementation To Register/Deregister Events
void IExtensionApplication.Initialize()
{
ApplicationEventManager appEventMgr = ApplicationEventManager.Instance();
appEventMgr.ApplicationMainWindowMoved += new ApplicationMainWindowMovedEventHandler(appEventMgr_ApplicationMainWindowMoved);
appEventMgr.ApplicationMainWindowSized += new ApplicationMainWindowSizedEventHandler(appEventMgr_ApplicationMainWindowSized);
Application.DocumentManager.DocumentBecameCurrent += new DocumentCollectionEventHandler(DocumentManager_DocumentBecameCurrent);
Application.DocumentManager.DocumentToBeDeactivated += new DocumentCollectionEventHandler(DocumentManager_DocumentToBeDeactivated);
Application.DocumentManager.DocumentToBeDestroyed += new DocumentCollectionEventHandler(DocumentManager_DocumentToBeDestroyed);
Application.DocumentManager.DocumentDestroyed += new DocumentDestroyedEventHandler(DocumentManager_DocumentDestroyed);
Document activeDoc = Application.DocumentManager.MdiActiveDocument;
activeDoc.Editor.EnteringQuiescentState += new EventHandler(ed_EnteringQuiescentState);
activeDoc.Editor.LeavingQuiescentState += new EventHandler(ed_LeavingQuiescentState);
activeDoc.CommandCancelled += new CommandEventHandler(Document_CommandCancelled);
}
void IExtensionApplication.Terminate()
{
Application.DocumentManager.DocumentBecameCurrent -= new DocumentCollectionEventHandler(DocumentManager_DocumentBecameCurrent);
Application.DocumentManager.DocumentToBeDeactivated -= new DocumentCollectionEventHandler(DocumentManager_DocumentToBeDeactivated);
Application.DocumentManager.DocumentToBeDestroyed -= new DocumentCollectionEventHandler(DocumentManager_DocumentToBeDestroyed);
Application.DocumentManager.DocumentDestroyed -= new DocumentDestroyedEventHandler(DocumentManager_DocumentDestroyed);
}
#endregion
#region A Couple Window Events
void appEventMgr_ApplicationMainWindowSized(object sender, EventArgs e)
{
try
{
Editor ed = Application.DocumentManager.MdiActiveDocument.Editor;
ed.WriteMessage("\nAutoCAD's window size just changed.\n");
}
catch { }
}
void appEventMgr_ApplicationMainWindowMoved(object sender, EventArgs e)
{
try
{
Editor ed = Application.DocumentManager.MdiActiveDocument.Editor;
ed.WriteMessage("\nAutoCAD's window was just moved.\n");
}
catch { }
}
#endregion
#region Some Document Events Used to Determine Application Quiescence In This Example
void DocumentManager_DocumentBecameCurrent(object sender, DocumentCollectionEventArgs e)
{
Editor ed = e.Document.Editor;
ed.EnteringQuiescentState += new EventHandler(ed_EnteringQuiescentState);
ed.LeavingQuiescentState += new EventHandler(ed_LeavingQuiescentState);
e.Document.CommandCancelled += new CommandEventHandler(Document_CommandCancelled);
}
void DocumentManager_DocumentToBeDeactivated(object sender, DocumentCollectionEventArgs e)
{
Editor ed = e.Document.Editor;
ed.EnteringQuiescentState -= new EventHandler(ed_EnteringQuiescentState);
ed.LeavingQuiescentState -= new EventHandler(ed_LeavingQuiescentState);
e.Document.CommandCancelled -= new CommandEventHandler(Document_CommandCancelled);
}
void DocumentManager_DocumentToBeDestroyed(object sender, DocumentCollectionEventArgs e)
{
Editor ed = e.Document.Editor;
ed.EnteringQuiescentState -= new EventHandler(ed_EnteringQuiescentState);
ed.LeavingQuiescentState -= new EventHandler(ed_LeavingQuiescentState);
e.Document.CommandCancelled -= new CommandEventHandler(Document_CommandCancelled);
}
void DocumentManager_DocumentDestroyed(object sender, DocumentDestroyedEventArgs e)
{
//If in Zero-Document state, create new drawing to make active
}
#endregion
#region Event Handlers
public static void ed_EnteringQuiescentState(object sender, EventArgs e)
{
Editor ed = sender as Editor;
ed.WriteMessage("\nEntering Quiescence");
}
void ed_LeavingQuiescentState(object sender, EventArgs e)
{
Editor ed = sender as Editor;
ed.WriteMessage("\nLeaving Quiescence");
}
void Document_CommandCancelled(object sender, CommandEventArgs e)
{
Editor ed = Application.DocumentManager.MdiActiveDocument.Editor;
ed.WriteMessage("\nA command was just cancelled.");
}
#endregion
}
}
