internal static extern int SetWindowLong32(IntPtr windowHandle, WinApiHelpers.GWLParameter nIndex, int dwNewLong);
 internal static extern IntPtr SetWindowLongPtr64(IntPtr windowHandle, WinApiHelpers.GWLParameter nIndex, IntPtr dwNewLong);
 public static extern int GetWindowLong(IntPtr hWnd, WinApiHelpers.GWLParameter nIndex);