Declaration

  TIEFolderWatch = class(TComponent)
  public
    constructor Create();
    destructor Destroy; override;
    procedure Start(const WatchPath: string = '');
    procedure Stop();
    function Running(): Boolean;
  published
    property AutoStart: Boolean;
    property WatchSubTree: Boolean;
    property WatchOptions: TWatchOptions;
    property WatchActions: TWatchActions;
    property BufferSize: Integer;
    property Path: string;
    property OnNotify: TFileChangeNotifyEvent;
    property OnChange: TNotifyEvent;
    property OnError: TOnError;
  end;

Description

Component that automatically notifies changes to files within a specified folder. Used by TImageEnFolderMView.

Demo

Demos\PDF\PDFPrinter\PdfPrinter.dpr

Example

// When an image is added to C:\Images\, display it in a TImageEnView

procedure TForm1.FormCreate(Sender: TObject);
begin
  IEFolderWatch1.OnNotify := IEFolderWatch1Notify;
  IEFolderWatch1.Start('C:\Images\');
end;

procedure TForm1.IEFolderWatch1Notify(const Sender: TObject; const Action:
    TWatchAction; const FileName: string);
begin
  if Action = waAdded then
    ImageEnView1.IO.LoadFromFile( Filename );
end;

Attribution

Based on Cromis.DirectoryWatch by Iztok Kacin, Cromis (iztok.kacin@gmail.com).

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