unit2.pas

这是一个用DELPHI编写的汽车动态的在地图上运动轨迹的例子.

unit Unit2;

interface

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

type
  TForm2 = class(TForm)
    ColorDialog1: TColorDialog;
    Button1: TButton;
    Button3: TButton;
    BitBtn1: TBitBtn;
    ComboBox1: TComboBox;
    TrackBar1: TTrackBar;
    Label1: TLabel;
    Label2: TLabel;
    procedure Button1Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure TrackBar1Change(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form2: TForm2;

implementation

var
   backColor: TColor;
   fillPattern : smallint;
    position : string;
{$R *.dfm}

procedure TForm2.Button1Click(Sender: TObject);
begin
  if (ColorDialog1.Execute) then
  begin
    backColor := ColorDialog1.Color;
    ComboBox1.Color := backColor;
  end;
end;

procedure TForm2.Button3Click(Sender: TObject);
begin
  fillPattern := ComboBox1.Color;
end;

procedure TForm2.TrackBar1Change(Sender: TObject);
var
  post : integer;
begin
  post := TrackBar1.Position;

end;

end.