unit exsortzeos;

{$mode objfpc}{$H+}

interface

uses
  Classes, SysUtils, DB, RxDBGrid, ZConnection, ZDataset, ZAbstractRODataset;

type
  TFBDataSetSortEngine = class(TExDBGridSortEngine)
  public
    procedure Sort(Field:TField; ADataSet:TDataSet; Asc:boolean);override;
  end;

implementation

procedure TFBDataSetSortEngine.Sort(Field:TField; ADataSet:TDataSet; Asc:boolean);
begin
  if Assigned(ADataSet) then
  begin
    (ADataSet as TZQuery).SortedFields:='"' + Field.FieldName + '"';
    if Asc then
      (ADataSet as TZQuery).SortType:=stAscending
    else
      (ADataSet as TZQuery).SortType:=stDescending;
  end
end;

initialization
  RegisterExDBGridSortEngine(TFBDataSetSortEngine, TZQuery);
end.