Declaration Operation Codes
Declaration operation codes are used to name and define subroutines, variables, arrays, and constants. When you declare a procedure, variable, or constant, you also define its access , depending upon where you place the declaration and what keywords you use to declare it.
A declaration operation code reserves the memory needed to create a variable, but does not explicitly create it. You can explicitly create a variable and assign it a value at the same time by using the following syntax:
// MyField is created and assigned the initial value 45.
DCLFLD Name( MyField ) Type (*Integer) Len( 2) Inz( 45 )
If your variable is an object variable, you can explicitly create an instance of its class when you declare it by using the New keyword, as illustrated below:
DclFld TheOtherForm Type( Form2 ) New( *Dft )
The following is a listing of declaration operation codes and those that allow you to specify an access type .
- BEGCLASS
- BEGCONSTRUCTOR
- BEGENUM
- BEGFUNC
- BEGINTERFACE
- BEGPROP
- BEGSR
- DCLALIAS
- DCLARRAY
- DCLCONST
- DCLDB
- DCLDISKFILE
- DCLDS
- DCLEVENT
- DCLFLD
- DCLMEMORYFILE
- DCLSUBFILE
- DCLSUBFILEFLD
- DCLWORKSTNFILE