using System.Runtime.InteropServices; namespace EveOPreview { [StructLayout(LayoutKind.Sequential)] class DWM_THUMBNAIL_PROPERTIES { public uint dwFlags; public RECT rcDestination; public RECT rcSource; public byte opacity; [MarshalAs(UnmanagedType.Bool)] public bool fVisible; [MarshalAs(UnmanagedType.Bool)] public bool fSourceClientAreaOnly; } }