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error - ImageMagick Error Routines

NAME

error - ImageMagick Error Routines

SYNOPSIS

DefaultErrorHandler(message,qualifier)

DefaultWarningHandler(message,qualifier)

Error(message,qualifier)

previous_handler=SetErrorHandler(handler)

previous_handler=SetWarningHandler(handler)

Warning(message,qualifier)

FUNCTION DESCRIPTIONS

DefaultErrorHandler

Function DefaultErrorHandler displays an error message and then terminates the program.

The format of the DefaultErrorHandler routine is: 

        DefaultErrorHandler(message,qualifier)

A description of each parameter follows:

o message:
Specifies the message to display before terminating the program.

o qualifier:
Specifies any qualifier to the message.

DefaultWarningHandler

Function DefaultWarningHandler displays a warning message.

The format of the DefaultWarningHandler routine is: 

        DefaultWarningHandler(message,qualifier)

A description of each parameter follows:

o message:
Specifies the message to display before terminating the program.

o qualifier:
Specifies any qualifier to the message.

Error

Function Error calls the error handler routines with an error message.

The format of the Error routine is: 

        Error(message,qualifier)

A description of each parameter follows:

o message:
Specifies the message to display before terminating the program.

o qualifier:
Specifies any qualifier to the message.

SetErrorHandler

Function SetErrorHandler sets the error handler to the specified routine and returns the previous error handler.

The format of the SetErrorHandler routine is: 

        previous_handler=SetErrorHandler(handler)

A description of each parameter follows:

o handler:
Specifies a pointer to a routine to handle errors.

SetWarningHandler

Function SetWarningHandler sets the warning handler to the specified routine and returns the previous warning handler.

The format of the SetWarningHandler routine is: 

        previous_handler=SetWarningHandler(handler)

A description of each parameter follows:

o handler:
Specifies a pointer to a routine to handle warnings.

Warning

Function Warning calls the warning handler routines with an warning message.

The format of the Warning routine is: 

        Warning(message,qualifier)

A description of each parameter follows:

o message:
Specifies the message to display before terminating the program.

o qualifier:
Specifies any qualifier to the message.

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Modified: Wed May 7 00:32:25 1997 GMT
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