Procedures

[ STATIC ] { PUBLIC | PRIVATE } { PROCEDURE | SUB }
  Identifier
  (
    [ Parameter AS Datatype [ , ... ] ] [ , ]
    [ OPTIONAL Optional Parameter AS Datatype [ , ... ] ] [ , ] [ ... ]
  )
  ...
END

3.0	Syntax [ STATIC ] { PUBLIC | PRIVATE } { PROCEDURE | SUB }   Identifier   (     [ [ BYREF ] Parameter AS Datatype [ , ... ] ] [ , ]     [ OPTIONAL [ BYREF ] Optional Parameter AS Datatype [ , ... ] ] [ , ] [ ... ]   )   ... END

This declares a procedure, i.e. a method that returns nothing.

The END keyword indicates the end of the procedure.

Functions

[ STATIC ] { PUBLIC | PRIVATE } { FUNCTION | PROCEDURE | SUB }
  Identifier
  (
    [ Parameter AS Datatype [ , ... ] ] [ , ]
    [ OPTIONAL Optional Parameter AS Datatype [ , ... ] ] [ , ] [ ... ]
  )
  AS Datatype
  ...
END

3.0	Syntax [ STATIC ] { PUBLIC | PRIVATE } { FUNCTION | PROCEDURE | SUB }   Identifier   (     [ [ BYREF ] Parameter AS Datatype [ , ... ] ] [ , ]     [ OPTIONAL [ BYREF ] Optional Parameter AS Datatype [ , ... ] ] [ , ] [ ... ]   )   AS Datatype   ... END

This declares a function, i.e. a method that returns a value.

The END keyword indicates the end of the function.

The datatype of the return value must be specified.

Of course, these declarations must be written on a unique line. They are separated there so that it is readable.

Use the ../return keyword to terminate the function and pass the return value back to the caller.

Examples

Method Access

The method is accessible everywhere in the class it is declared.

• If the PUBLIC keyword is specified, it is also accessible to the other classes having a reference to an object of this class.

• If the STATIC keyword is specified, the method can only access to the static variables of the class.

Method Arguments

All method arguments are separated by commas.

• If the OPTIONAL keyword is specified, all parameters after the keywords are optional. You can specify a default value after the parameter declaration by using the equal sign.

• If the parameters list end with ..., then the method can take extra arguments. Every additional argument passed to the method is accessible with the Param class.

3.0

Arguments Passed By Reference When the BYREF keyword is specified, the argument must be an assignment expression that will be modified by the called function. SUB ConvPixelToCentimeter(BYREF Value as Float, Dpi AS Integer)   Value = Value / Dpi * 2.54 END PUBLIC SUB Main()   DIM Size AS Float   Size = 256   ConvPixelToCentimeter(BYREF Size, 96)   PRINT Size END 6.773333333333 If you do not specify BYREF at function call, then the argument is passed by value, even if BYREF was specified at function declaration. In other words: the called function allows an argument to be passed by reference, whereas the caller decides it.