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unit AdvPanel;

interface

uses ExtCtrls,Classes,Messages ;

const
  WM_MouseEnter = $B013;
  WM_MouseLeave = $B014;

type
  TAdvPanel = class(TPanel)
  private
    FOnMouseLeave: TNotifyEvent;
    FOnMouseEnter: TNotifyEvent;
    procedure WM_MouseEnter(var Msg: TMessage); message WM_MouseEnter;
    procedure WM_MouseLeave(var Msg: TMessage); message WM_MouseLeave;
    procedure SetOnMouseEnter(const Value: TNotifyEvent);
    procedure SetOnMouseLeave(const Value: TNotifyEvent);
  published
    property OnMouseEnter: TNotifyEvent read FOnMouseEnter write SetOnMouseEnter;
    property OnMouseLeave: TNotifyEvent read FOnMouseLeave write SetOnMouseLeave;
  end;

{ TAdvPanel }
implementation

procedure TAdvPanel.WM_MouseLeave(var Msg: TMessage);

begin
  if Assigned(FOnMouseLeave) then
    FOnMouseLeave(self);
end;

procedure TAdvPanel.WM_MouseEnter(var Msg: TMessage);
begin
  if Assigned(FOnMouseEnter) then
    FOnMouseEnter(self);
end;

procedure TAdvPanel.SetOnMouseEnter(const Value: TNotifyEvent);
begin
  FOnMouseEnter := Value;
end;

procedure TAdvPanel.SetOnMouseLeave(const Value: TNotifyEvent);
begin
  FOnMouseLeave := Value;
end;
end.