NativeMethods.cs

using System;
using System.Runtime.InteropServices;

namespace Codeite.ClipFriend
{
    internal static class NativeMethods
    {
        // See http://msdn.microsoft.com/en-us/library/ms649021%28v=vs.85%29.aspx
        public const int WM_CLIPBOARDUPDATE = 0x031D;
        public static IntPtr HWND_MESSAGE = new IntPtr(-3);

        // See http://msdn.microsoft.com/en-us/library/ms632599%28VS.85%29.aspx#message_only
        [DllImport("user32.dll", SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool AddClipboardFormatListener(IntPtr hwnd);

        // See http://msdn.microsoft.com/en-us/library/ms633541%28v=vs.85%29.aspx
        // See http://msdn.microsoft.com/en-us/library/ms649033%28VS.85%29.aspx
        [DllImport("user32.dll", SetLastError = true)]
        public static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);
    }
}