upolybezier.pas

DelphiWin32核心API参考光盘内容.是学习书籍中的源码,便于学习.

unit UPolyBezier;

interface

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

type
  TForm1 = class(TForm)
    procedure FormPaint(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.FormPaint(Sender: TObject);
var
  Points: array[0..6] of TPoint; // points defining the bezier curver
begin
  {define the bezier curve}
  Points[0].X := 10;
  Points[0].Y := 50;
  Points[1].X := 40;
  Points[1].Y := 90;
  Points[2].X := 80;
  Points[2].Y := 10;
  Points[3].X := 110;
  Points[3].Y := 50;
  Points[4].X := 140;
  Points[4].Y := 10;
  Points[5].X := 180;
  Points[5].Y := 90;
  Points[6].X := 210;
  Points[6].Y := 50;

  {draw the bezier curve}
  PolyBezier(Canvas.Handle, Points, 7);
end;

end.