Изменение шрифта в окне подсказки

type 
   TForm1 = class(TForm) 
     procedure FormCreate(Sender: TObject); 
   private 
   public 
     procedure MyShowHint(var HintStr: string; 
                         var CanShow: Boolean; 
                         var HintInfo: THintInfo); 
end; 

var 
   Form1: TForm1; 

implementation 

{$R *.DFM} 

procedure TForm1.MyShowHint(var HintStr: string; 
                             var CanShow: Boolean; 
                             var HintInfo: THintInfo); 
var i : integer; 
begin 
   for i := 0 to Application.ComponentCount - 1 do 
     if Application.Components[i] is THintWindow then 
       with THintWindow(Application.Components[i]).Canvas do 
       begin 
         Font.Name   := 'Arial'; 
         Font.Size   := 18; 
         Font.Style  := [fsBold]; 
         HintInfo.HintColor := clWhite; 
       end; 
end; 

procedure TForm1.FormCreate(Sender: TObject); 
begin 
   Application.OnShowHint := MyShowHint; 
end;