using System;
using System.Runtime.InteropServices;

internal class NativeMethods
{
  public const int TV_FIRST = 0x1100;
  public const int TVM_SETEXTENDEDSTYLE = TV_FIRST + 44;
  public const int TVM_GETEXTENDEDSTYLE = TV_FIRST + 45;
  public const int TVM_SETAUTOSCROLLINFO = TV_FIRST + 59;
  public const int TVS_NOHSCROLL = 0x8000;
  public const int TVS_EX_AUTOHSCROLL = 0x0020;
  public const int TVS_EX_FADEINOUTEXPANDOS = 0x0040;
  public const int GWL_STYLE = -16;

  [DllImport("user32.dll", CharSet = CharSet.Unicode)]
  internal static extern int SendMessage(IntPtr hWnd, UInt32 Msg, int wParam, int lParam);

  [DllImport("user32.dll", CharSet = CharSet.Unicode)]
  internal static extern void SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);

  [DllImport("user32.dll", CharSet = CharSet.Unicode)]
  internal static extern int GetWindowLong(IntPtr hWnd, int nIndex);

  [DllImport("uxtheme.dll", CharSet = CharSet.Unicode)]
  public extern static int SetWindowTheme(IntPtr hWnd, string pszSubAppName, string pszSubIdList);
}