Class passed to an error. More...

#include <opencv2/core/exception.hpp>

Collaboration diagram for cv::Exception:

Public Member Functions
	Exception ()

	Exception (Error::Code _code, const std::string &_err, const std::string &_func, const std::string &_file, int _line)

virtual	~Exception () CV_NOEXCEPT

const char *	codeMessage () const

void	formatMessage ()

virtual const char *	what () const CV_NOEXCEPT CV_OVERRIDE

Public Attributes
Error::Code	code
	error code

std::string	err
	error description

std::string	file
	source file name where the error has occurred

std::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

std::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, samples/cpp/snippets/detect_blob.cpp, and samples/hog_tapi.cpp.

Constructor & Destructor Documentation

◆ Exception() [1/2]

cv::Exception::Exception ( )

Default constructor

◆ Exception() [2/2]

cv::Exception::Exception	(	Error::Code	_code,
		const std::string &	_err,
		const std::string &	_func,
		const std::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 ( )

virtual

Member Function Documentation

◆ codeMessage()

const char * cv::Exception::codeMessage ( ) const

◆ formatMessage()

void cv::Exception::formatMessage ( )

◆ what()

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

virtual

Returns: the error description and the context as a text string.

Examples: samples/hog_tapi.cpp.

Member Data Documentation

◆ code

Error::Code cv::Exception::code

error code

See also: CVStatus

◆ err

std::string cv::Exception::err

error description

◆ file

std::string cv::Exception::file

source file name where the error has occurred

◆ func

std::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

std::string cv::Exception::msg

the formatted error message

Examples: samples/cpp/pca.cpp, and samples/cpp/snippets/detect_blob.cpp.

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

opencv2/core/exception.hpp

Public Member Functions

Public Attributes