public static extern IntPtr SendMessage(HandleRef hWnd, int msg, int wParam, ref TVITEM lParam);
public static extern IntPtr SendMessage(HandleRef hWnd, int msg, int wParam, ref TVITEM lParam);
public static extern IntPtr SendMessage(HandleRef hWnd, int msg, int wParam, ref TVITEM lParam);
public static extern IntPtr SendMessage(HandleRef hWnd, int msg, int wParam, ref TVITEM lParam);