#IFNDEF
Preprocessor conditional directive
Syntax:
#ifndef symbol
' Conditionally included statements
endif
Description:
Conditionally includes statements at compile time.
Statements within the
#ifndef...#endif block are included if
symbol is not defined and excluded (ignored) if
symbol is defined.
#ifndef symbol is equivalent to
#if Not defined(symbol)#IFNDEF __MYFILE_BI__
#DEFINE __MYFILE_BI__
' Declarations
#ENDIF
Differences from QB:
See also:
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