I am using DelphiX in Delphi6 pro.

I have a database to log all the players' ID cardinal when they added to the session.

When i try to DXPlay.sendmessage to some players just logged off, that mean the ID cardinal is invalid. Then error prompted out.

Is there any method to avoid 'sendmessage' to some invalid cardinal which they just left session?

Is there any method to check the Player.name is still in the session? or avoid error prompt out?

Thanks.