BYREF Statement

BYREF varname AS type

Declares a parameter as by reference (BYREF).  Parameter can be to a sub program (RUN/SPAWN/CALL), a subroutine or function (SUB/FUNCTION) or an external library function (DECLARE)

Examples:

' Forward or external declarations

DECLARE FUNCTION Pelle ALIAS "mm@pelle"

DECLARE FUNCTION MessageBox LIB "kernel32.dll" ALIAS "MessageBoxA"( BYVAL hWnd AS INTEGER,

                                                                   BYREF lpText AS STRING,

                                                                   BYREF lpCapt AS STRING,

                                                                   BYVAL uType AS INTEGER ) AS INTEGER

' Parameters to Sub Program

BYREF hult AS STRING

BYVAL anka AS INTEGER

' Using Arrays as Parameters.  Arrays must be as BYREF

SUB PrintArray( BYREF arr AS INTEGER )

  DIM i AS INTEGER

  FOR i = 1 TO 10

     PRINT "Array(";i;")=";arr(i),

  ENDFOR

END SUB

DIM SomeArray(10) AS INTEGER

CALL PrintArray( SomeArray )

END