| DirectX SDK | 
The DirectMusicPerformance.AddNotificationType method causes the performance to generate notification messages whenever events of the requested type occur.
object.AddNotificationType( _
    type As CONST_DMUS_NOTIFICATION_TYPE)
If the method fails, it raises an error, and Err.Number can be set to one of the following values:
| DMUS_E_INVALIDARG | 
| DMUS_E_OUTOFMEMORY |