[dviper]

Доброго времени суток!

Помогите, пожалуйста, новичку в разработке компонента!
Вопрос: Как с класса-потомка запустить метод invalidate в родительском классе?
Например, как написать

Код:

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procedure TTitle.SetCaption(Value: string); begin    FCaption := Value;    TDNCommentaryButton.Invalidate -- ? end;

Листинг компонента приведен ниже

Код:

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unit DNCommentaryButton;   interface   uses   SysUtils, Classes, Controls, Messages, Graphics, Windows, ExtCtrls;   type   TTextAligment = (caLeft, caRight, caMiddle);   TTextVAligment = (caTop, caBottom, caCentre);     TPaddingCaption = class(TPersistent)   private     FpcLeft, FpcRight, FpcTop, FpcBottom: Integer;     procedure SetpsLeft(Value: Integer);     procedure SetpsRight(Value: Integer);     procedure SetpsTop(Value: Integer);     procedure SetpsBottom(Value: Integer);   published     property pcLeft: Integer read FpcLeft write SetpsLeft;     property pcRight: Integer read FpcRight write SetpsRight;     property pcTop: Integer read FpcTop write SetpsTop;     property pcBottom: Integer read FpcBottom write SetpsBottom;   end;     { -- Title -- Заголовок -- }   TTitle = class(TPersistent)   private     FFont: TFont;     FCaption: string;     FTextAligment: TTextAligment;     FTextVAligment: TTextVAligment;     procedure SetCaption(Value: string);  published     { Published declarations }     property Font: TFont read FFont write FFont;     property Caption: string read FCaption write SetCaption;     property TextAligment: TTextAligment read FTextAligment write FTextAligment;     property TextVAligment: TTextVAligment read FTextVAligment write FTextVAligment;   end;     // { -- Commentary -- Примечание -- }   // TCommentary = class(TPersistent)   // private   // published   // end;     // { -- BackgroundImage -- Фоновый рисунок -- }   // TBackgroundImage = class(TPersistent)   // private   // { Private declarations }     // public   // published   // { Published declarations }     // end;     { -- TDNCommentaryButton -- }   TDNCommentaryButton = class(TCustomControl)   private     { Private declarations }     FTitle: TTitle;     FPaddingCaption: TPaddingCaption;   protected     { Protected declarations }     r: TRect;     procedure SetTitle(Value: TTitle);     procedure SetPaddingCaption(Value: TPaddingCaption);   public     { Public declarations }     procedure Paint; override;     constructor Create(AOwner: TComponent); override;     destructor Destroy; override;   published     { Published declarations }     property Align;     property ParentFont;     property ParentShowHint;     property ShowHint;     property Visible;     property OnClick;     property Title: TTitle read FTitle write SetTitle;     property PaddingCaption: TPaddingCaption read FPaddingCaption write SetPaddingCaption;     end;   procedure Register;   implementation   procedure Register; begin   RegisterComponents('DNControls', [TDNCommentaryButton]); end;   { TDNCommentaryButton }   constructor TDNCommentaryButton.Create(AOwner: TComponent); begin   inherited Create(AOwner);   ControlStyle := ControlStyle + [csOpaque];     FPaddingCaption := TPaddingCaption.Create;   FTitle := TTitle.Create; end;   destructor TDNCommentaryButton.Destroy; begin   inherited Destroy; end;     procedure TDNCommentaryButton.Paint; var   X: Integer;   Y: Integer; begin   inherited Paint;   r := ClientRect;     SetBkMode(Canvas.Handle, TRANSPARENT);     // Caption -- Заголовок   Canvas.Font := Font;   case FTitle.TextAligment of     caLeft:       X := FPaddingCaption.FpcLeft;     caRight:       X := Self.Width - Canvas.TextWidth(FTitle.FCaption) - FPaddingCaption.FpcRight;     caMiddle:       X := (Width div 2) - (Canvas.TextWidth(FTitle.FCaption) div 2);   end;     case FTitle.FTextVAligment of     caTop:       Y := FPaddingCaption.FpcTop;     caBottom:       Y := Self.Height - Canvas.TextHeight(FTitle.FCaption) - FPaddingCaption.FpcBottom;     caCentre:       Y := (Height div 2) - (Canvas.TextHeight(FTitle.FCaption) div 2);   end;     Canvas.TextOut(X, Y, FTitle.Caption); end;   procedure TDNCommentaryButton.SetPaddingCaption(Value: TPaddingCaption); begin   FPaddingCaption := Value;   Invalidate; end;   procedure TDNCommentaryButton.SetTitle(Value: TTitle); begin   FTitle := Value;   Invalidate; end;       { TPaddingCaption }   procedure TPaddingCaption.SetpsBottom(Value: Integer); begin   FpcBottom := Value; end;   procedure TPaddingCaption.SetpsLeft(Value: Integer); begin   FpcLeft := Value; end;   procedure TPaddingCaption.SetpsRight(Value: Integer); begin   FpcRight := Value; end;   procedure TPaddingCaption.SetpsTop(Value: Integer); begin   FpcTop := Value; end;   { TTitle }   procedure TTitle.SetCaption(Value: string); begin    FCaption := Value;   end;   end.

[NumLock]

создать у TTitle поле FParent и передать его в конструкторе. в SetCaption вызвать нужный у FParent.

[dviper]

Я новичок в этом деле! Если не трудно, можно по подробнее...?!

[NumLock]

Код:

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unit Unit1;   interface   uses   Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,   Dialogs;   type   TMetro2033 = class   private     FParent: TWinControl;     FCaption: String;     procedure SetCaption(Value: String);   public     property Caption: String read FCaption write SetCaption;     constructor Create(AParent: TWinControl);   end;     TForm1 = class(TForm)     procedure FormCreate(Sender: TObject);   private     { Private declarations }   public     { Public declarations }   end;   var   Form1: TForm1;   implementation   {$R *.dfm}   { TMetro2033 }   constructor TMetro2033.Create(AParent: TWinControl); begin   inherited Create;   FParent:=AParent; end;   procedure TMetro2033.SetCaption(Value: String); begin   if Value<>FCaption then   begin     FCaption:=Value;     FParent.Invalidate;   end; end;   { TForm1 }   procedure TForm1.FormCreate(Sender: TObject); begin   with TMetro2033.Create(Self) do   begin     Caption:='Metro2033';   end; end;   end.

[dviper]

Для тех, кому это интересно!

Ниже приведен рабочий код:

Код:

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unit DNCommentaryButton;   interface   uses   SysUtils, Classes, Controls, Messages, Graphics, Windows, ExtCtrls;   type   TTextAligment = (caLeft, caRight, caMiddle);   TTextVAligment = (caTop, caBottom, caCentre);     TPaddingCaption = class(TPersistent)   private     FpcLeft, FpcRight, FpcTop, FpcBottom: Integer;     procedure SetpsLeft(Value: Integer);     procedure SetpsRight(Value: Integer);     procedure SetpsTop(Value: Integer);     procedure SetpsBottom(Value: Integer);   published     property pcLeft: Integer read FpcLeft write SetpsLeft;     property pcRight: Integer read FpcRight write SetpsRight;     property pcTop: Integer read FpcTop write SetpsTop;     property pcBottom: Integer read FpcBottom write SetpsBottom;   end;     { -- Title -- Заголовок -- }   TTitle = class(TPersistent)   private     FFont: TFont;     FCaption: string;     FParent: TWinControl;     FTextAligment: TTextAligment;     FTextVAligment: TTextVAligment;   public     procedure SetCaption(Value: string);     constructor Create(AParent: TWinControl);   published     { Published declarations }     property Font: TFont read FFont write FFont;     property Caption: string read FCaption write SetCaption;     property TextAligment: TTextAligment read FTextAligment write FTextAligment;     property TextVAligment: TTextVAligment read FTextVAligment write FTextVAligment;   end;     // { -- Commentary -- Примечание -- }   // TCommentary = class(TPersistent)   // private   // published   // end;     // { -- BackgroundImage -- Фоновый рисунок -- }   // TBackgroundImage = class(TPersistent)   // private   // { Private declarations }     // public   // published   // { Published declarations }     // end;     { -- TDNCommentaryButton -- }   TDNCommentaryButton = class(TCustomControl)   private     { Private declarations }     FTitle: TTitle;     FPaddingCaption: TPaddingCaption;   protected     { Protected declarations }     r: TRect;     procedure SetTitle(Value: TTitle);     procedure SetPaddingCaption(Value: TPaddingCaption);   public     { Public declarations }     procedure Paint; override;     constructor Create(AOwner: TComponent); override;     destructor Destroy; override;   published     { Published declarations }     property Align;     property ParentFont;     property ParentShowHint;     property ShowHint;     property Visible;     property OnClick;     property Title: TTitle read FTitle write SetTitle;     property PaddingCaption: TPaddingCaption read FPaddingCaption write SetPaddingCaption;     end;   procedure Register;   implementation   procedure Register; begin   RegisterComponents('DNControls', [TDNCommentaryButton]); end;   { TDNCommentaryButton }   constructor TDNCommentaryButton.Create(AOwner: TComponent); begin   inherited Create(AOwner);   ControlStyle := ControlStyle + [csOpaque];     FPaddingCaption := TPaddingCaption.Create;   FTitle := TTitle.Create(Self); end;   destructor TDNCommentaryButton.Destroy; begin   inherited Destroy; end;   procedure TDNCommentaryButton.Paint; var   X: Integer;   Y: Integer; begin   inherited Paint;   r := ClientRect;     SetBkMode(Canvas.Handle, TRANSPARENT);     // Caption -- Заголовок   Canvas.Font := Font;   case FTitle.TextAligment of     caLeft:       X := FPaddingCaption.FpcLeft;     caRight:       X := Self.Width - Canvas.TextWidth(FTitle.FCaption) - FPaddingCaption.FpcRight;     caMiddle:       X := (Width div 2) - (Canvas.TextWidth(FTitle.FCaption) div 2);   end;     case FTitle.FTextVAligment of     caTop:       Y := FPaddingCaption.FpcTop;     caBottom:       Y := Self.Height - Canvas.TextHeight(FTitle.FCaption) - FPaddingCaption.FpcBottom;     caCentre:       Y := (Height div 2) - (Canvas.TextHeight(FTitle.FCaption) div 2);   end;     Canvas.TextOut(X, Y, FTitle.Caption); end;   procedure TDNCommentaryButton.SetPaddingCaption(Value: TPaddingCaption); begin   FPaddingCaption := Value;   Invalidate; end;   procedure TDNCommentaryButton.SetTitle(Value: TTitle); begin   FTitle := Value;   Invalidate; end;   { TPaddingCaption }   procedure TPaddingCaption.SetpsBottom(Value: Integer); begin   FpcBottom := Value; end;   procedure TPaddingCaption.SetpsLeft(Value: Integer); begin   FpcLeft := Value; end;   procedure TPaddingCaption.SetpsRight(Value: Integer); begin   FpcRight := Value; end;   procedure TPaddingCaption.SetpsTop(Value: Integer); begin   FpcTop := Value; end;   { TTitle }   constructor TTitle.Create(AParent: TWinControl); begin   inherited Create;   FParent := AParent; end;   procedure TTitle.SetCaption(Value: string); begin   FCaption := Value;   FParent.Invalidate; end;   end.

Огромный Респект NumLock-у!!!