messages=linphone_chat_room_get_history(cr,NB_MSG_HIST);
g_object_set_data(G_OBJECT(chat_view),"from_message",g_strdup(uri_str));
display_history_message(chat_view,messages,uri);
messages=linphone_chat_room_get_history(cr,NB_MSG_HIST);
g_object_set_data(G_OBJECT(chat_view),"from_message",g_strdup(uri_str));
display_history_message(chat_view,messages,uri);