JamBaseShellListViewThumbnailUpdated Event

public event EventHandler<ThumbnailUpdatedEventArgs> ThumbnailUpdated

Public Event ThumbnailUpdated As EventHandler(Of ThumbnailUpdatedEventArgs)

public:
 event EventHandler<ThumbnailUpdatedEventArgs^>^ ThumbnailUpdated {
	void add (EventHandler<ThumbnailUpdatedEventArgs^>^ value);
	void remove (EventHandler<ThumbnailUpdatedEventArgs^>^ value);
}

member ThumbnailUpdated : IEvent<EventHandler<ThumbnailUpdatedEventArgs>,
    ThumbnailUpdatedEventArgs>

//The following example draws a frame around the thumbnails of folders.
private void ShellListView1_ThumbnailUpdated(object sender, Shell.ThumbnailUpdatedEventArgs e)
{
    if (e.Item.IsFolder)
    {
        using (Graphics g = Graphics.FromImage(e.Thumbnail))
        using (Pen p = new Pen(SystemBrushes.Control, 1))
        {
            g.DrawRectangle(p, 0, 0, e.Thumbnail.Width - 1, e.Thumbnail.Height - 1);
        }
    }

}