TImageEnView.AsyncLoading

Declaration

property AsyncLoading: Boolean;

Description

Set to load images in a background thread to prevent tying up up the user interface.

Note:
◼When AsyncLoading is enabled, calls to LoadFromFile will be asynchronous, so you will need to use OnImageLoaded to update your application user interface
◼If you attempt to access IEBitmap by code, or user interaction, ImageEn will force loading (become synchronous)
◼This method uses AsyncMode

Demos

	Demos\Multi\MView_AttachedViewer\MViewPreview.dpr
	Demos\Multi\MViewPreview\MViewPreview.dpr

Example

// Load images in background thread
procedure TMainForm.btnLoadClick(Sender: TObject);
begin
  ImageEnView1.AsyncLoading := True;
  ImageEnView1.IO.LoadFromFile( IEFolderMView.SelectedFilename );
end;

// Update the UI
procedure TMainForm.ImageEnView1ImageLoaded(Sender: TObject);
begin
  lblSize.Caption := Format( '%d x %d px', [ ImageEnView1.IEBitmap.Width, ImageEnView1.IEBitmap.Height ]);
end;

TImageEnView.AsyncLoading