testledform.pas

来自「Delphi高级开发指南是开发程序的好帮手」· PAS 代码 · 共 46 行

unit TestLedForm;

interface

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

type
  TForm1 = class(TForm)
    Option: TLabel;
    DDHLed1: TDDHLed;
    Label2: TLabel;
    Button1: TButton;
    ColorDialog1: TColorDialog;
    procedure OptionClick(Sender: TObject);
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.OptionClick(Sender: TObject);
begin
  if DDHLed1.Status = lsOn then
    DDHLed1.Status := lsOff
  else
    DDHLed1.Status := lsOn;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  if ColorDialog1.Execute then
    DDHLed1.Color := ColorDialog1.Color;
end;

end.