unit DirectoryExists;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

// BeginExample: DirectoryExists
// Routine: SysUtils.DirectoryExists
// Routine: SysUtils.CreateDir
// Method: SysUtils.Exception.Create

// BeginCode
{
The following example creates a directory ‘C:\temp’ if it
does not already exist.
}
uses FileCtrl;
procedure TForm1.Button1Click(Sender: TObject);
begin
  if not SysUtils.DirectoryExists('C:\temp') then
    if not CreateDir('C:\temp') then
      raise Exception.Create('Cannot create C:\temp');
  if not CreateDir('C:\temp') then
    raise Exception.Create('Cannot create C:\temp again!');
end;
// EndCode
// EndExample: DirectoryExists
end.
