CALL ABSOLUTE - mkilgore/QB64pe GitHub Wiki

CALL ABSOLUTE is used to access interrupts on the computer or execute assembly type procedures.

Syntax

CALL ABSOLUTE([argumentList,] integerOffset)

CALL ABSOLUTE is implemented to support older code and is not recommended practice. To handle mouse input, use _MOUSEINPUT and related functions.

CALL and parameter brackets are required in the statement.
argumentList contains the list of arguments passed to the procedure.
integerOffset contains the offset from the current code segment, set by DEF SEG and SADD, to the starting location of the called procedure.
QBasic and QB64 have the ABSOLUTE statement built in and require no library, like QuickBASIC did.
NOTE: QB64 does not support INT 33h mouse functions above 3 or BYVAL in an ABSOLUTE statement. Registers are emulated.