unidbgrd 勾选全不选

procedure Tmyframe.UniDBGrid1AfterLoad(Sender: TUniDBGrid);
var
  DBGridJSName: string;
begin
  DBGridJSName := (Sender as TUniDBGrid).JSName;
  UniSession.AddJS('Ext.defer(function(){' +                //
    DBGridJSName + '.getSelectionModel().deselectAll(); ' + //
    DBGridJSName + '.view.refresh()}, 20); ');
end;