About structures
A structure is a collection of one
or more related variables of the same or different data types grouped
under a single name. In some languages, such as Pascal and COBOL,
structures are called records
.
Structures allow you to refer to related entities as a unit
rather than individually. For example, if you define the user’s
ID, address, access level, and a picture (bitmap) of the employee
as a structure called user_struct, you can then refer to
this collection of variables as user_struct.
Two kinds
There are two kinds of structures:
- Global
structures, which are not associated with any object
in your application. You can declare an instance of the structure
and reference the instance in any script in your application. - Object-level structures,
which are associated with a particular type of window, menu, or
user object, or with the Application object. These structures can
always be used in scripts for the object itself. You can also choose
to make the structures accessible from other scripts.
Deciding which kind you want
When you design your application, think about how the structures
you are defining will be used:
- If the structure is
general-purpose and applies throughout the application, make it
a global
structure. - If the structure applies only to a particular type
of object, make it an object-level
structure.
Document get from Powerbuilder help
Thank you for watching.
Subscribe
Login
0 Comments
Oldest