How to get notification when Actor is selected in Editor?

I am trying to do the same. Did you get any answer ? did you advance on it ?

There is a way to check if an actor is selected in editor by checking with AActor::IsSelected(). You can also use a TActorIterator to go through every actor of your scene and return true when on is selected.

for(TActorIterator<AActor> ActorIterator = ItBegin; ActorIterator; ++ActorIterator)
	{
		if(ActorIterator->IsSelected()) //do something	
	}

But there is one problem I haven’t been able to figure out yet : when to call this method. I haven’t managed to use Tick in the editor when the game isn’t running… so yeah…