Deselektion von ListView-Items bei Rechtsklick vermeiden?

[Bummi]

Delphi-Quellcode:

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, Menus, ComCtrls;

type
  TListView=Class(ComCtrls.TListView)
     Procedure MyRightMouse(Var msg:TWMRButtonDown);message WM_RButtonDown;
  End;

  TForm1 = class(TForm)
    ListView1: TListView;
    PopupMenu1: TPopupMenu;
    mn1: TMenuItem;
  private
    { Private-Deklarationen }
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

{ TListView }

procedure TListView.MyRightMouse(var msg: TWMRButtonDown);
var
 p:TPoint;
begin
   p := ClientToScreen( Point(msg.XPos,msg.YPos));
   if assigned(Popupmenu) then Popupmenu.Popup(p.x,p.y);
   msg.Result := -1;
end;

end.