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 Panelplus1.FrameColor := clRed;
 Panelplus1.Frame := True;
 Panelplus1.Repaint;					

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{****************************************************
 Eine Panel-Komponente mit zusätzlichen Funktionen.

                             galagher, Oktober 2004
*****************************************************}


unit PanelPlus;

interface

uses Types, SysUtils, Classes, ExtCtrls, Windows, Graphics, Controls;

type
  TPanelPlus = class(TPanel)
  private
    { Private-Deklarationen }
    FCaptionTop: Integer;
    FFrameColor: TColor;
    FFrame, FDrawScrew: Boolean;
  protected
    { Protected-Deklarationen }
    procedure Paint; override;
    procedure SetCaptionTop(Value: Integer);
    procedure SetFrameColor(Value: TColor);
    procedure SetFrame(Value: Boolean);
    procedure SetDrawScrew(Value: Boolean);
  public
    { Public-Deklarationen }
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
  published
    { Published-Deklarationen }
    property CaptionTop: Integer read FCaptionTop write SetCaptionTop;
    property Frame: Boolean read FFrame write SetFrame;
    property FrameColor: TColor read FFrameColor write SetFrameColor;
    property DrawScrew: Boolean read FDrawScrew write SetDrawScrew;
  end;

procedure Register;

implementation

{Zeichnen - wegen der Möglichkeit, die Caption nach oben oder unten zu}
{setzen, kann diese Prozedur nicht einfach vom Vorfahren übernommen werden}
procedure TPanelPlus.Paint;
const
  Alignments: array[TAlignment] of Longint = (DT_LEFT, DT_RIGHT, DT_CENTER);
var
  Rect: TRect;
  TopColor, BottomColor: TColor;
  FontHeight: Integer;
  Flags: Longint;

  procedure AdjustColors(Bevel: TPanelBevel);
  begin
   TopColor := clBtnHighlight;
   if Bevel = bvLowered then TopColor := clBtnShadow;
   BottomColor := clBtnShadow;
   if Bevel = bvLowered then BottomColor := clBtnHighlight;
  end;

begin
 Rect := GetClientRect;
 if BevelOuter <> bvNone then
 begin
  AdjustColors(BevelOuter);
  Frame3D(Canvas, Rect, TopColor, BottomColor, BevelWidth);
 end;

 Frame3D(Canvas, Rect, Color, Color, BorderWidth);
 if BevelInner <> bvNone then
 begin
  AdjustColors(BevelInner);
  Frame3D(Canvas, Rect, TopColor, BottomColor, BevelWidth);
 end;

 with Canvas do
 begin
  Brush.Color := Color;
  FillRect(Rect);
  Brush.Style := bsClear;
  Font := Self.Font;
  FontHeight := TextHeight('W');
  with Rect do
  begin
   Top := ((Bottom + Top) - FontHeight) div 2;
   Bottom := Top + FontHeight;
  end;

  Rect.Top := Rect.Top+FCaptionTop;
  Rect.Bottom := Rect.Bottom+Rect.Top;

  Flags := DT_EXPANDTABS or DT_VCENTER or Alignments[Alignment];
  Flags := DrawTextBiDiModeFlags(Flags);

  if FFrame then  {Einen Rahmen um das PanelPlus zeichnen}
  begin
   Pen.Color := FFrameColor;
   Pen.Width := BevelWidth+BorderWidth+2;
   Rectangle(BevelWidth+BorderWidth+1,BevelWidth+BorderWidth+1,ClientWidth-
    BevelWidth-BorderWidth-1,ClientHeight-BevelWidth-BorderWidth-1);
  end;

  DrawText(Handle, PChar(Caption), -1, Rect, Flags);
 end;

 if FDrawScrew then  {"Schrauben" zeichnen}
 begin
  if Height <= 80 then  {Nur 2 "Schrauben": links und rechts Mitte}
  begin
   Canvas.Pen.Color := $00A58F92;
   Canvas.Pen.Width := 1;
   Canvas.Brush.Color := $00D9CCCA;
   Canvas.FillRect(Types.Rect(6,Height div 2-3,12,Height div 2-2+5));
   Canvas.Ellipse(5, Height div 2-4, 13, Height div 2+4);
   Canvas.MoveTo(7,Height div 2-2);
   Canvas.LineTo(11,Height div 2+2);
   Canvas.FillRect(Types.Rect(Width-6,Height div 2-3,Width-12,Height div 2-2+6));
   Canvas.Ellipse(Width-5, Height div 2-4, Width-13, Height div 2+4);
   Canvas.MoveTo(Width-8,Height div 2-2);
   Canvas.LineTo(Width-12,Height div 2+2);
  end
  else                  {4 "Schrauben": links oben/unten, rechts oben/unten}
  begin
   Canvas.Pen.Color := $00A58F92;
   Canvas.Pen.Width := 1;
   Canvas.Brush.Color := $00D9CCCA;
   Canvas.FillRect(Types.Rect(6,6,12,12));
   Canvas.Ellipse(5, 5, 13,13);
   Canvas.FillRect(Types.Rect(Width-6,Height-6,Width-12,Height-12));
   Canvas.Ellipse(Width-5, Height-5, Width-13,Height-13);
   Canvas.FillRect(Types.Rect(Width-6,6,Width-12,12));
   Canvas.Ellipse(Width-5, 5, Width-13,13);
   Canvas.FillRect(Types.Rect(6,Height-6,12,Height-12));
   Canvas.Ellipse(5, Height-5, 13,Height-13);
   Canvas.MoveTo(7,7);
   Canvas.LineTo(11,11);
   Canvas.MoveTo(Width-8,Height-8);
   Canvas.LineTo(Width-12,Height-12);
   Canvas.MoveTo(Width-8,7);
   Canvas.LineTo(Width-12,11);
   Canvas.MoveTo(7,Height-8);
   Canvas.LineTo(11,Height-12);
  end;
 end;
end;

{------------------------------------------------------------------------------}

{Y-Position von Caption setzen}
procedure TPanelPlus.SetCaptionTop(Value: Integer);
begin
 FCaptionTop := Value;
 Paint;
end;

{------------------------------------------------------------------------------}

{Rahmenfarbe}
procedure TPanelPlus.SetFrameColor(Value: TColor);
begin
 FFrameColor := Value;
 Paint;
end;

{------------------------------------------------------------------------------}

{Rahmen Ja/Nein}
procedure TPanelPlus.SetFrame(Value: Boolean);
begin
 FFrame := Value;
 Paint;
end;

{------------------------------------------------------------------------------}

procedure TPanelPlus.SetDrawScrew(Value: Boolean);
begin
 FDrawScrew := Value;
 Paint;
end;

{------------------------------------------------------------------------------}

constructor TPanelPlus.Create(AOwner: TComponent);
begin
 inherited Create(AOwner);
 FFrameColor := Color;
end;

{------------------------------------------------------------------------------}

destructor TPanelPlus.Destroy;
begin
 inherited Destroy;
end;

{------------------------------------------------------------------------------}

procedure Register;
begin
 RegisterComponents('Samples', [TPanelPlus]);
end;

end.