{ Copyright (C) 2004 Olivier GUILBAUD

  This library is free software; you can redistribute it and/or modify it
  under the terms of the GNU Library General Public License as published by
  the Free Software Foundation; either version 2 of the License, or (at your
  option) any later version.

  This program is distributed in the hope that it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
  for more details.

  You should have received a copy of the GNU Library General Public License
  along with this library; if not, write to the Free Software Foundation,
  Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
}

unit lr_fpc;

{$mode objfpc}{$H+}

interface

uses
  Classes, SysUtils,Graphics,LCLType,LCLIntf;

function CopyPalette(Source: hPalette): hPalette;
procedure Frame3D(Canvas: TCanvas; var Rect: TRect; TopColor, BottomColor: TColor; Width: Integer);

implementation

function CopyPalette(Source: hPalette): hPalette;
var
  LP: ^TLogPalette;
  NumEntries: integer;
begin
  Result := 0;
  GetMem(LP, Sizeof(TLogPalette) + 256*Sizeof(TPaletteEntry));
  try
    with LP^ do
      begin
      palVersion := $300;
      palNumEntries := 256;
      NumEntries := GetPaletteEntries(Source, 0, 256, palPalEntry);
      if NumEntries > 0 then
        begin
        palNumEntries := NumEntries;
        Result := CreatePalette(LP^);
        end;
      end;
  finally
    FreeMem(LP, Sizeof(TLogPalette) + 256*Sizeof(TPaletteEntry));
  end;
end;

procedure Frame3D(Canvas: TCanvas; var Rect: TRect; TopColor, BottomColor: TColor; Width: Integer);

  procedure DoRect;
  var
    TopRight, BottomLeft: TPoint;
  begin
    with Canvas, Rect do
    begin
      TopRight.X := Right;
      TopRight.Y := Top;
      BottomLeft.X := Left;
      BottomLeft.Y := Bottom;
      Pen.Color := TopColor;
      PolyLine([BottomLeft, TopLeft, TopRight]);
      Pen.Color := BottomColor;
      Dec(BottomLeft.X);
      PolyLine([TopRight, BottomRight, BottomLeft]);
    end;
  end;

begin
  Canvas.Pen.Width := 1;
  Dec(Rect.Bottom);
  Dec(Rect.Right);
  while Width > 0 do
  begin
    Dec(Width);
    DoRect;
    InflateRect(Rect, -1, -1);
  end;
  Inc(Rect.Bottom);
  Inc(Rect.Right);
end;

end.