Манипуляции с заголовком формы

Code:

unit Unit1;

interface

uses

Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs;

type

TForm1 = class(TForm)

   procedure FormPaint(Sender: TObject);

   procedure FormResize(Sender: TObject);

   procedure FormDeactivate(Sender: TObject);

   procedure FormActivate(Sender: TObject);

private

public

   { Public declarations }

end;

var

Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.FormPaint(Sender: TObject);

var

LabelHeight, LabelWidth, LabelTop: Integer;

caption_height, border3d_y, button_width, border_thickness: Integer;

MyCanvas: TCanvas;

CaptionBarRect: TRect;

begin

CaptionBarRect := Rect(0, 0, 0, 0);

MyCanvas := TCanvas.Create;

MyCanvas.Handle := GetWindowDC(Form1.Handle);

border3d_y := GetSystemMetrics(SM_CYEDGE);

button_width := GetSystemMetrics(SM_CXSIZE);

border_thickness := GetSystemMetrics(SM_CYSIZEFRAME);

caption_height := GetSystemMetrics(SM_CYCAPTION);

LabelWidth := Form1.Canvas.TextWidth(Form1.Caption);

LabelHeight := Form1.Canvas.TextHeight(Form1.Caption);

LabelTop := LabelHeight - (caption_height div 2);

CaptionBarRect.Left := border_thickness + border3d_y + button_width;

CaptionBarRect.Right := Form1.Width - (border_thickness + border3d_y)

               - (button_width * 4);

CaptionBarRect.Top := border_thickness + border3d_y;

CaptionBarRect.Bottom := caption_height;

if Form1.Active then

   MyCanvas.Brush.Color := clActiveCaption

else

   MyCanvas.Brush.Color := clInActiveCaption;

MyCanvas.Brush.Style := bsSolid;

MyCanvas.FillRect(CaptionBarRect);

MyCanvas.Brush.Style := bsClear;

MyCanvas.Font.Color := clCaptionText;

MyCanvas.Font.Name := 'MS Sans Serif';

MyCanvas.Font.Style := MyCanvas.Font.Style + [fsBold];

DrawText(MyCanvas.Handle, PChar(' ' + Form1.Caption), Length(Form1.Caption) + 1,

   CaptionBarRect, DT_CENTER or DT_SINGLELINE or DT_VCENTER);

MyCanvas.Free;

end;

procedure TForm1.FormResize(Sender: TObject);

begin

Form1.Paint;

end;

procedure TForm1.FormDeactivate(Sender: TObject);

begin

Form1.Paint;

end;

procedure TForm1.FormActivate(Sender: TObject);

begin

Form1.Paint;

end;

end.