public static extern UInt32 NT_SP_CaptureImage(IntPtr handle, IntPtr file_name_utf8, IntPtr call_back_data, SP_SDKCaptureImageCallBack call_back);
public static extern UInt32 NT_SP_CaptureImage(IntPtr handle, [MarshalAs(UnmanagedType.LPStr)] String file_name_utf8, IntPtr call_back_data, SP_SDKCaptureImageCallBack call_back);