Delphi控件源码

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Delphi

Unit1.pas：源码内容

							unit Unit1;
interface
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;
type
  TForm1 = class(TForm)
    Label1: TLabel;
    GroupBox1: TGroupBox;
    RadioButton1: TRadioButton;
    RadioButton2: TRadioButton;
    RadioButton3: TRadioButton;
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;
var
  Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.Button1Click(Sender: TObject);
begin
    if radiobutton1.checked=true then form1.color:=clRed
    else if radiobutton2.checked=true then  form1.color:=clYellow
    else  form1.color:=clBlue
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
       close;
end;
end.

						