DBus - received im message and time stamp

[dibo20 at wp.pl]

Hi,

I'm listening for signal ReceivedImMsg. When window with contact is 
opened, then is ok - I get conversation id argument and can get message 
time stamp by calling PurpleConversationGetMessageHistory -> 
PurpleConversationMessageGetTimestamp. But when window is closed, then 
argument with conversation id is 0. So how can I get time stamp? I can 
get system local time, but what if message is offline (sent to me some 
times ago).

Regards