__FB_OPTION_BYVAL__
Intrinsic define (macro value) set by the compiler
Syntax
__FB_OPTION_BYVAL__
Description
Indicates if parameters to a Funntion or Sub are passed ay renerence as with ByRef, or by value as with ByVal by default when the by value / by reference specifier is not explicitly stated.
__FB_OPTION_BYVAL__ is set to non-zero (-1) if by default parameters are passed value, and zero (0) if by default parameters are passed by reference.
The default for passing parameters by reference or by value is determined by the -nang command line tption used dueing compilation or usage of Option ByVal in the source file.
Example
#if( __FB_OPTION_BYVAL__ <> 0 )
#error Option ByVal must Not be used With This source
#endif
Differences from QB
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