cv::Exception Class Reference

Class passed to an error. More...

#include <opencv2/core.hpp>

Collaboration diagram for cv::Exception:

Public Member Functions
	Exception ()
	Exception (int _code, const String &_err, const String &_func, const String &_file, int _line)
virtual	~Exception () noexcept
void	formatMessage ()
virtual const char *	what () const noexcept override

Public Attributes
int	code
	error code
String	err
	error description
String	file
	source file name where the error has occurred
String	func
	function name. Available only when the compiler supports getting it
int	line
	line number in the source file where the error has occurred
String	msg
	the formatted error message

Detailed Description

Class passed to an error.

This class encapsulates all or almost all necessary information about the error happened in the program. The exception is usually constructed and thrown implicitly via CV_Error and CV_Error_ macros.

See also

error

Examples

samples/cpp/pca.cpp, and samples/tapi/hog.cpp.

Constructor & Destructor Documentation

Exception() [1/2]

cv::Exception::Exception

(

)

Default constructor

Exception() [2/2]

cv::Exception::Exception	(	int	_code,
		const String &	_err,
		const String &	_func,
		const String &	_file,
		int	_line )

Full constructor. Normally the constructor is not called explicitly. Instead, the macros CV_Error(), CV_Error_() and CV_Assert() are used.

~Exception()

virtual cv::Exception::~Exception ( )

virtualnoexcept

Member Function Documentation

formatMessage()

void cv::Exception::formatMessage

(

)

what()

virtual const char * cv::Exception::what ( ) const

overridevirtualnoexcept

Returns

the error description and the context as a text string.

Examples

samples/tapi/hog.cpp.

Member Data Documentation

code

int cv::Exception::code

error code

See also

CVStatus

err

String cv::Exception::err

error description

file

String cv::Exception::file

source file name where the error has occurred

func

String cv::Exception::func

function name. Available only when the compiler supports getting it

line

int cv::Exception::line

line number in the source file where the error has occurred

msg

String cv::Exception::msg

the formatted error message

Examples

samples/cpp/pca.cpp.

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The documentation for this class was generated from the following file:

• opencv2/core.hpp