Receiving Virtual Server events from a managed program

Last week I talked about how to receive Virtual Server events from a VBScript - this week I am going to talk about doing this from a managed application. To do this you need to:

1. Setup the managed application appropriately to talk to the Virtual Server COM interfaces (details here: https://blogs.msdn.com/virtual_pc_guy/search.aspx?q=typer&p=1)

2. Declare your Virtual Server COM object 'WithEvents' as follows:

   Private WithEvents virtualServer As VMVirtualServer = Nothing

   instead of:

   Private virtualServer As VMVirtualServer = Nothing

3. Create a subroutine to catch the event:

   Public Sub virtualServer_EventLogged(ByVal logMessageID As Integer) Handles virtualServer.OnEventLogged

   'Do something with the event
   msgbox(CStr(logMessageID))

   End Sub

There - really quite simple.

Cheers,
Ben

Comments

• Anonymous
  January 27, 2006
  Hi, Ben,
  Very nice series on Event detection and handling on VS.
  
  We are trying to detect when a legacy(and unstable) application crash the virtual machine. Is such event a vmVirtualMachineEvent_TripleFault or a
  vmVirtualMachineEvent_HeartbeatStopped?
  
  What are the difference between these two events in terms of impact on host OS?
  
  Ying
• Anonymous
  January 27, 2006
  Hi Ying,
  
  You should be looking at 'HeartbeatStopped' event - as that will fire whenever the virtual machine crashes. TripleFault is a specific kind of crash - and will still trigger a 'HeartbeatStopped' event.
  
  Cheers,
  Ben