public:

	ErrorMessageData(const ErrorMessageData &data);

	~ErrorMessageData();

	ErrorMessageData(StringID summary_msg, StringID detailed_msg, uint duration = 0, int x = 0, int y = 0, const GRFFile *textref_stack_grffile = nullptr, uint textref_stack_size = 0, const uint32 *textref_stack = nullptr);

	/** Check whether error window shall display a company manager face */

	bool HasFace() const { return face != INVALID_COMPANY; }

	void SetDParam(uint n, uint64 v);

	void SetDParamStr(uint n, const char *str);