public static extern ErrorStatus acdbGetObjectId( out ObjectId id, ref Ads_name name);
public static extern PromptStatus acedSSName( ref Ads_name ss, int i, out Ads_name name);
public static extern PromptStatus acedSSFree( ref Ads_name ss);
public static extern PromptStatus acedSSLength( ref Ads_name ss, out int len);
public static extern PromptStatus acedSSGet( string str, IntPtr pt1, IntPtr pt2, IntPtr filter, out Ads_name ss);