In GridColumn's DoHeaderClick event,

function TGridColumn.DoHeaderClick: Boolean;
begin
  {$IFNDEF DESIGN}
  if Assigned(FOnHeaderClick) then
     FOnHeaderClick(Self);
  {$ENDIF}
  Result:=True;
end;

But TGridColumn's property OnHeaderClick is TNotifyEvent,
the TNotifyEvent can't have return value, can change this to a function, then in
DoHeaderClick,

function TGridColumn.DoHeaderClick: Boolean;
begin
  {$IFNDEF DESIGN}
  if Assigned(FOnHeaderClick) then
     Result := FOnHeaderClick(Self);
  {$ENDIF}
end;

thanks!

kentersoft,

Thanks.  I think this is already fixed, but if not, I will make sure that it is.

Tim Young
Elevate Software
www.elevatesoft.com