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 relArea()
 Obtain the logical number of the workarea
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 Prototype

     ERRCODE relArea(
                      WORKAREAP wa,
                      USHORT relNum,
                      USHORTP nArea
                    )

 Arguments

     wa is a pointer to self.

     relNum is an unsigned short value that specifies the relation number
     for which to obtain the workarea number.

     nArea is a pointer to an unsigned short value that determines the
     number of the workarea.

 Description

     Obtains the CA-Clipper SELECT() area of the child relation referenced by
     relNum.  relNum is a one-based number.

 Default Behavior

     relArea() implements the behavior of the CA-Clipper function
     DBRSELECT().  It scans relations for the workarea at wa and returns the
     area number of the child workarea.

 Implementation Notes

     .  If this method is reimplemented, be careful to return the area
        number for the relation at relNum-1 since relNum is a one-based
        number.

 Files:  Header file is Rdd.api.