#ifundefined

Test if a constant has not been defined.

#ifundefined  Constant

    < Precompiler directives and ProcScript statements >

#endif

Parameters

Constant—contant name

Description

The #ifundefined directive can be used to create a block of ProcScript statements and precompiler directives whenever the constant specified does not already exist.

In the following code, if the constant <DEBUG_ALLOWED> has not been defined, a compiler information message is generated and a nodebug ProcScript statement is generated and compiled. 

#ifundefined DEBUG_ALLOWED
   #info Debugging not enabled.
   nodebug
#endif

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