QBasic 1.1: ABSOLUTE Keyword

Explanation

CALL ABSOLUTE Statement

Transfers control to a machine-language procedure.

Worth knowing

Useful and cross-version information about the programming environments of QBasic, QuickBasic and Visual Basic for DOS.

ASCII Code Tables
Keyboard Scan Codes
Syntax Conventions
Screen Modes
Color Attributes
Error Codes

You are here: References Overview > QBasic 1.1 Commands List > ABSOLUTE Keyword

Syntax

CALL ABSOLUTE ([argumentlist,] offset%)

Description / Parameter(s)

argumentlist	Arguments passed to a machine-language procedure as offsets from the current data segment.
offset%	The offset from the current code segment, set by DEF SEG, to the starting location of the procedure.

Example


'Calls routine for printing the screen to a local printer.
DIM a%(2)
DEF SEG = VARSEG(a%(0))
FOR i% = 0 TO 2
  READ d%
  POKE VARPTR(a%(0)) + i%, d%
NEXT i%
DATA 205, 5, 203  : ' int 5  retf  'Machine-language code
                                   'for printing screen.
CALL ABSOLUTE(VARPTR(a%(0)))
DEF SEG