Searches a table on a specified field                     

function PXSrchFld

   (TblHandle       : TableHandle;       { table to search in               }
    RecHandle       : RecordHandle;      { record buffer with field to find }
    FldHandle       : FieldHandle;       { field number to search on        }
    Mode            : Integer): Integer; { searching from first/next record }

Errors: PXERR_BLOBNOSEARCH       60  Cant search on a Blob field
        PXERR_INVFIELDHANDLE     75  Invalid field handle
        PXERR_INVTABLEHANDLE     76  Invalid table handle
        PXERR_RECNOTFOUND        89  Record was not found
        PXERR_ENDOFTABLE        101  End of table
        PXERR_INVRECHANDLE      104  Invalid record handle


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