As an example, suppose we have
[code]
class ResizeEventArgs : RoutedEventArgs
{
public float Amount {get;}
public ResizeEventArgs(RoutedEvent @event, object sender, float amount) :
base(@event, sender)
{ this.Amount = amount; }
}
[/code]
If we attempt to use ResizeEventArgs as an EventArgs then Noesis will error with
[code]
InvalidOperationException: Event args for ResizeEventHandler have to define the method 'static void InvokeHandler(Delegate handler, IntPtr sender, IntPtr args)'
[/code]
Implementing InvokeHandler from a user perspective is practically impossible, making it very difficult to use this custom RoutedEventArgs implementation.