unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    DriveComboBox1: TDriveComboBox;
    Memo1: TMemo;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var tmp:TDriveComboBox;i:integer;
begin
   tmp:=TDriveComboBox.Create(Form1);
   tmp.Parent:=Form1;
   tmp.Top:=50;
   tmp.Left:=50;
   tmp.Visible:=True;
   for i:=0 to tmp.Items.Count-1 do
     Memo1.Lines.Add(tmp.Items[i]);
//   tmp.Name:='tmp';
//   Sleep(10000);
   tmp.Destroy;

end;

procedure TForm1.Button2Click(Sender: TObject);
var i:integer;
begin
   Memo1.Lines.add('count:'+IntToStr(Form1.ControlCount));
   for i:=0 to Form1.ControlCount-1 do
     Memo1.Lines.Add(inttostr(i)+':'+ Form1.Controls[i].Name);
end;

procedure TForm1.Button3Click(Sender: TObject);
var s:string;
begin
  s:='012:45';
  Memo1.Lines.Add(s+' '+IntToStr(pos(':',s)));
end;

end.