galatyphoon wrote: > > Hi; > > I've checked all sample codes in Developer's Kit and "DjTrader's Un- > Official Developer's Document" but i've found nothing about the Query > class in the COM library. Looking at the members of this class, i guess > that this class lets developers to query QP3 databases. But since i've > no idea about the internal structure about the databases (table names, > column names etc.) i couldn't make it work so far. > > And a second question, how can i list the components of a certain index > (let's say SP500) with QP3 COM library? Symbols class list symbols only > according to exchange memberships or types (futures, stocks etc.)? >
What do you mean by the Query class? I have occasionally used COM to access the Quotes Plus database and I don't remember seeing a class called Query. There are no Quote Plus COM methods for listing the components of the SP 500 index. Howard > >
