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The Fortran name of this function is NhlFIsApp.

This boolean function returns True if the given id identifies an App class object, and False otherwise.

C Synopsis

#include </ncarg/hlu/App.h>

NhlBoolean NhlIsApp(
	        int	id,

Fortran Synopsis

      subroutine NhlFIsApp(id, istatus)
      integer id, istatus


id (input)
Specifies an integer id to an existing HLU object.
istatus (output, Fortran only)
On output, the status of the object.


You use this function to determine if the id you supply identifies an App class object.

Return values

The NhlIsApp C function returns True if the id identifies an App class object and False otherwise; the NhlFIsApp Fortran subroutine returns the boolean value in istatus.