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 filterText()
 Return filter condition of the specified workarea
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 Prototype

     ERRCODE filterText(
                         WORKAREAP wa,
                         BYTEP cExpr
                       )

 Arguments

     wa is a pointer to self.

     cExpr is a pointer to a buffer containing the text expression.

 Description

     filterText() returns a text string indicating the current filtering
     condition set for the data store referenced by wa.

 Default Behavior

     The workarea implementation returns the value at wa->filter.cExpr.

 Implementation Notes

     .  This method emulates CA-Clipper DBFILTER() function.  Refer to
        this function for more information regarding the rules of
        implementation.

 Files:  Header file is Rdd.api.