char*buf=sqlite3_mprintf("SELECT * FROM history WHERE remoteContact = %Q AND direction = %i AND status != %i",peer.c_str(),LinphoneChatMessageIncoming,LinphoneChatMessageStateDisplayed);
buf=sqlite3_mprintf("UPDATE history SET status=%i WHERE remoteContact=%Q AND direction=%i;",LinphoneChatMessageStateDisplayed,peer.c_str(),LinphoneChatMessageIncoming);