Futurebasic/Language/Reference/proc

PROC

function

Syntax

procAddress& = PROC "label"

Description

This function looks for the indicated label in your program, and returns a memory address which can be used to call the instructions which follow label. Typically, label will indicate the beginning of an ENTERPROC procedure which is to be used as a "callback procedure" by a MacOS Toolbox routine.

  • In cpu68K compiles, PROC returns the memory address of the first program instruction that follows the label. This is the same as the address returned by the LINE function.
  • in cpuPPC compiles, PROC returns a "universal procedure pointer." This allows MacOS Toolbox routines in PPC machines to correctly use the referenced ENTERPROC procedure as a callback procedure.

See Also

CALLENTERPROC; LINE; @FN

This article is issued from Wikibooks. The text is available under Creative Commons Attribution-Share Alike 4.0 unless otherwise noted. Additional terms may apply for the media files.