You could use the QueryDef object to list alle queries, combo/listboxes, forms/reports that use a SQL-sting in its recordsource.
I think this will look "backwards" than what I was after. I do not keep any DAO.QueryDef objects in the FE DB. I dynamically create them via code just before they are needed.
I found one Combo Box with a raw SQL statement entered into it... something I understand performs less quickly than saving the query into a DAO.QueryDef object and having the control refer to the query object.
Also, I do not have a "special" prefix just for ComboBox controls. If they are suppose to be the GUI control for a database field, then the control is named according to my GUI field naming standard "fld*" where "*" is what ever the real DB column is the control displays.