std-sys-dos-p


Synopsis

(std-sys-dos-p)

Description

Predicate if the current AutoCAD version is a version for DOS, if it's running under MS DOS or a similar operating system (PC-DOS by IBM or PT-DOS) or if it's running in a DOS box under Windows.

Cached version

This function is only called once, the result is stored in the global symbol *SYS-DOS*. All subsequent calls just return a result dependent on the value of this symbol.

Arguments

None

Return Value

T or nil.

Side Effects

Works with the global symbol *SYS-DOS*.

Module

Defined in STDINIT