- OT SetErrorHandler version modi64257ed version OT Type Description inNewHandler String Name method execute result String name previous errorlarr handler Discussion OT sets action perform when ObjectTools encounters error previous error handler returned By default action taken when error occurs If pass name existing method inHandler method get called when error occurs method take two String parameters parameter contain description error occurred second parameter contain name ObjectTools method was called when error occurred Note If put TRACE statement end your error handler method when error occurs debugger come up step line line after caused error Whether not error handler set whenever error occurs OK variable set zero

OT SetErrorHandler

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OT SetErrorHandler version 1 modiﬁed version 2.0

OT SetErrorHandler(inNewHandler) String

→

Parameter Type Description

inNewHandler String Name of a 4D method to execute

→

Function result String The name of the previous error

← handler

Discussion

OT SetErrorHandler sets the action to perform when ObjectTools encounters an error. The previous error handler is returned.

By default, action is taken when an error occurs.

If you pass the name of an existing 4D method in inHandler, that method will get called when an error occurs. The method must take two String parameters. The ﬁrst parameter will contain a description of the error that occurred. The second parameter will contain the name of the ObjectTools method that was called when the error occurred.

Note If you put a TRACE statement at the end of your error handler method, when an error occurs the 4D debugger will come up. If you then step one line, you will be at the line after the one that caused the error.

Whether or not an error handler is set, whenever an error occurs the OK variable is set to zero.

OT SetErrorHandler returns the old handler so that you may dynamically change the error handling within your code.

Topics of Interest
Object Utility Routines
Error Handling

Published date: Mon, 31 Jul 2006 00:34:46 GMT → View XML Version

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