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• NAME
• SYNOPSIS
• FUNCTION DESCRIPTIONS
• CatchException
• DestroyExceptionInfo
• GetExceptionInfo
• GetLocaleExceptionMessage
• MagickError
• MagickWarning
• SetErrorHandler
• SetExceptionInfo
• SetFatalErrorHandler
• SetWarningHandler
• ThrowException

NAME

error - Dealing with Errors

SYNOPSIS

CatchException( const ExceptionInfo *exception );

void DestroyExceptionInfo( ExceptionInfo *exception );

GetExceptionInfo( ExceptionInfo *exception );

const char * GetLocaleExceptionMessage( const ExceptionType severity, const char *tag );

void MagickError( const ExceptionType error, const char *reason, const char *description );

void MagickWarning( const ExceptionType warning, const char *reason, const char *description );

ErrorHandler SetErrorHandler( ErrorHandler handler );

SetExceptionInfo( ExceptionInfo *exception, ExceptionType severity );

ErrorHandler SetWarningHandler( ErrorHandler handler );

void ThrowException( ExceptionInfo *exception, const ExceptionType severity, const char *reason, const char *description );

FUNCTION DESCRIPTIONS

CatchException

CatchException() returns if no exceptions is found otherwise it reports the exception as a warning, error, or fatal depending on the severity.

The format of the CatchException method is:

CatchException ( const ExceptionInfo *exception );

A description of each parameter follows:

exception:

The exception info.

DestroyExceptionInfo

DestroyExceptionInfo() deallocates memory associated with exception.

The format of the DestroyExceptionInfo method is:

void DestroyExceptionInfo ( ExceptionInfo *exception );

A description of each parameter follows:

exception:

The exception info.

GetExceptionInfo

GetExceptionInfo() initializes an exception to default values.

The format of the GetExceptionInfo method is:

GetExceptionInfo ( ExceptionInfo *exception );

A description of each parameter follows:

exception:

The exception info.

GetLocaleExceptionMessage

GetLocaleExceptionMessage() converts a enumerated exception severity and tag to a message in the current locale.

The format of the GetLocaleExceptionMessage method is:

const char *GetLocaleExceptionMessage ( const ExceptionType severity, const char *tag );

A description of each parameter follows:

severity:

the severity of the exception.

tag:

the message tag.

MagickError

Method MagickError calls the error handler methods with an error reason.

The format of the MagickError method is:

void MagickError ( const ExceptionType error, const char *reason, const char *description );

A description of each parameter follows:

exception:

Specifies the numeric error category.

reason:

Specifies the reason to display before terminating the program.

description:

Specifies any description to the reason.

MagickFatalError() calls the fatal error handler methods with an error reason.

The format of the MagickError method is:

    void MagickFatalError(const ExceptionType error,const char *reason,
      const char *description)

A description of each parameter follows:

exception:

Specifies the numeric error category.

reason:

Specifies the reason to display before terminating the program.

description:

Specifies any description to the reason.

MagickWarning

Method MagickWarning calls the warning handler methods with a warning reason.

The format of the MagickWarning method is:

void MagickWarning ( const ExceptionType warning, const char *reason, const char *description );

A description of each parameter follows:

warning:

The warning severity.

reason:

Define the reason for the warning.

description:

Describe the warning.

SetErrorHandler

SetErrorHandler() sets the error handler to the specified method and returns the previous error handler.

The format of the SetErrorHandler method is:

ErrorHandler SetErrorHandler ( ErrorHandler handler );

A description of each parameter follows:

handler:

The method to handle errors.

SetExceptionInfo

SetExceptionInfo() set the exception severity.

The format of the SetExceptionInfo method is:

SetExceptionInfo ( ExceptionInfo *exception, ExceptionType severity );

A description of each parameter follows:

exception:

The exception info.

severity:

The exception severity.

SetFatalErrorHandler

SetFatalErrorHandler() sets the fatal error handler to the specified method and returns the previous fatal error handler.

The format of the SetErrorHandler method is:

    ErrorHandler SetErrorHandler(ErrorHandler handler)

A description of each parameter follows:

handler:

The method to handle errors.

SetWarningHandler

SetWarningHandler() sets the warning handler to the specified method and returns the previous warning handler.

The format of the SetWarningHandler method is:

ErrorHandler SetWarningHandler ( ErrorHandler handler );

A description of each parameter follows:

handler:

The method to handle warnings.

ThrowException

ThrowException() throws an exception with the specified severity code, reason, and optional description.

The format of the ThrowException method is:

void ThrowException ( ExceptionInfo *exception, const ExceptionType severity, const char *reason, const char *description );

A description of each parameter follows:

exception:

The exception.

severity:

The severity of the exception.

reason:

The reason of the exception.

description:

The exception description.