Legacy Document
Important: The information in this document is obsolete and should not be used for new development.
Important: The information in this document is obsolete and should not be used for new development.
The Query Definition Function Resource
A query document may contain a query definition function, which can modify the query record and, if necessary, fill in the query template to create a complete query.If you want to include a query definition function, you must make it the first piece of code in a resource of type
'qdef'in the query document.Note that, because a query in memory consists only of a 2-byte length value followed by a character string, the query definition function has to know the exact contents and structure of a query in order to modify it. For a sample query definition function that uses a dialog box to prompt the user for a user name and password, see Listing 12-7 on page 12-53.