Probleme mit einer eigenen Komponente

[Wal]

Habe Probleme mit dem Click und MouseDown Ereignis, hier der Code :

Delphi-Quellcode:

unit cPOSCompo;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  ExtCtrls, StdCtrls;

type
  TOnMouseEvent = procedure( Msg: TWMMouse ) of object;

  TcPOSCompo = class(TCustomControl)
  protected

    procedure WMMouseEnter( var Msg : TWMMouse ); message CM_MOUSEENTER;
    procedure WMMouseLeave( var Msg : TWMMouse ); message CM_MOUSELEAVE;
    procedure WMLButtonUp( var Msg : TWMLButtonUp ); message WM_LBUTTONUP;
    procedure WMLButtonDown( var Msg : TWMLButtonUp ); message WM_LBUTTONDOWN;
  private
    FImage: TImage;
    FLabel: TLabel;
    FEntered : boolean;
    FDown : boolean;
    FPic : TPicture;
    FPicDown : TPicture;
    FPicUp : TPicture;
    FOnMouseEnter : TOnMouseEvent;
    FOnMouseLeave : TOnMouseEvent;
    FOnMouseDown  : TOnMouseEvent;
    FOnMouseUp    : TOnMouseEvent;
    procedure setCaption(Value: String);
    function getCaption: String;
    procedure setFont(Value: TFont);
    function getFont: TFont;
    procedure SetPic( Value : TPicture );
    procedure SetPicDown( Value : TPicture );
    procedure SetPicUp( Value : TPicture );
  public
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
    procedure Resize; override;
  published
    property Caption: String read getCaption write setCaption;
    property Font: TFont read getFont write setFont;
    property Pic : TPicture read FPic write SetPic;
    property PicDown : TPicture read FPicDown write SetPicDown;
    property PicUp : TPicture read FPicUp write SetPicUp;
    property OnMouseDown : TOnMouseEvent read FOnMouseDown write FOnMouseDown;
    property OnMouseEnter : TOnMouseEvent read FOnMouseEnter write FOnMouseEnter;
    property OnMouseLeave : TOnMouseEvent read FOnMouseLeave write FOnMouseLeave;
    property OnMouseUp : TOnMouseEvent read FOnMouseUp write FOnMouseUp;
    property OnClick;
  end;

procedure Register;

implementation

procedure Register;
begin
  RegisterComponents('cPos_Live', [TcPOSCompo]);
end;

constructor TcPOSCompo.Create(AOwner: TComponent);
begin
  Inherited;
  FImage := TImage.Create(self);
  FImage.Parent := self;
  FLabel:= TLabel.create(self);
  FLabel.Parent := self;
  FPic := TPicture.Create;
  FPicUp := TPicture.Create;
  FPicDown := TPicture.Create;
  FLabel.Visible := False;
  FLabel.Transparent := True;
  Self.AutoSize := True;
  FImage.AutoSize := True;
  FEntered := False;
  FDown := False;
end;

destructor TcPOSCompo.Destroy;
begin
  FPic.Free;
  FPicDown.Free;
  FPicUp.Free;
  Inherited;
end;

procedure TcPOSCompo.Resize;
begin
  FImage.Picture := FPic;
End;

procedure TcPOSCompo.WMMouseEnter( var Msg: TWMMouse );
begin
  FEntered := True;
  if FDown then FImage.Picture := FPicDown else FImage.Picture := FPicUp;
  if Assigned( FOnMouseEnter ) then FOnMouseEnter( Msg );
end;

procedure TcPOSCompo.WMMouseLeave( var Msg: TWMMouse );
begin
  FEntered := False;
  FImage.Picture := FPic;
  if Assigned( FOnMouseLeave ) then FOnMouseLeave( Msg );
end;

procedure TcPOSCompo.WMLButtonDown(var Msg: TWMMouse);
begin
  inherited;
  FDown := True;
  if FEntered then FImage.Picture := FPicDown;
  if Assigned( FOnMouseDown ) then FOnMouseDown( Msg );
end;

procedure TcPOSCompo.WMLButtonUp(var Msg: TWMMouse);
begin
  inherited;
  FDown := False;
  if FEntered then FImage.Picture := FPicUp;
  if Assigned( FOnMouseUp ) then FOnMouseUp( Msg );
end;

procedure TcPOSCompo.setCaption(Value: String);
begin
  FLabel.Caption := Value;
  If FLabel.Caption = '' then FLabel.Visible := False
  else FLabel.Visible := True;
end;

function TcPOSCompo.getCaption: String;
begin
  result := FLabel.Caption;
end;

procedure TcPOSCompo.setFont(Value: TFont);
begin
  FLabel.Font := Value;
end;

function TcPOSCompo.getFont: TFont;
begin
  result := FLabel.Font;
end;

procedure TcPOSCompo.SetPic( Value : TPicture );
begin
  FPic.Assign( Value );
end;

procedure TcPOSCompo.SetPicDown( Value : TPicture );
begin
  FPicDown.Assign( Value );
end;

procedure TcPOSCompo.SetPicUp( Value : TPicture );
begin
  FPicUp.Assign( Value );
end;

end.

Das MouseDown für die PicDown-Umschaltung und das Click für das reagieren auf den Button im Programm funzt nicht, ich gehe mal davon aus, da ich ja auf das Image oder Label Klicke und nicht auf das Kompo. Wie könnte ich das lösen ?
Vielen Dank im vorraus.

Wal