The definition of a User-Defined
Type begins with the reserved word TYPE
and ends with the keywords END TYPE. In between, you define the
names and
TYPE StudentRecord
LastName AS STRING * 20 ' A 20-character string
FirstName AS STRING * 15 ' A 15-character string
IDnum AS LONG ' Student ID, a Long-integer
Contact AS STRING * 30 ' Emergency contact person
ContactPhone AS STRING * 14 ' Their phone number
ContactRel AS STRING * 8 ' Relationship to student.
AverageGrade AS SINGLE ' Single-precision % grade
END TYPE
Remember that the definition of a User-Defined Type does not set aside memory for storing data of that Type. Rather, it defines a template for the new Type StudentRecord. Then when the compiler encounters a statement declaring (or creating) a variable of the new Type, it will "know" how many bytes of storage to set aside for the variable. In order to use this new Type, you must declare variables of that Type with the DIM statement:
DIM Student AS StudentRecord
See Also
Accessing the fields of a User-Defined Type
Arrays within User-Defined Types
Using arrays of User-Defined Types
Using User-Defined Types with procedures and functions
Storage requirements and restrictions