public static extern int SendMessage(IntPtr hWnd, WM_WindowsMessage wMsg, uint wParam, string lParam);
public static extern int SendMessage(IntPtr hWnd, WM_WindowsMessage wMsg, IntPtr wParam, IntPtr lParam);
public static int SendMessage(IntPtr hWnd, WM_WindowsMessage wMsg, SC_SysCommand wParam) { return(SendMessage(hWnd, wMsg, (uint)wParam, 0)); }