MATLAB BUILDER EX 1 Guide de l'utilisateur télécharger pdf (Page 33)

Handling Errors During a Method Call

Handling Errors During a M ethod Call

Errors that occur while creating a class instance or during a class method

create a n exception in the current procedure. Visual Basic p rovides

an exception handling capability through the

On Error Goto <label>

statement, in which the program execution jumps to <label> when an error

occurs. (

<label> must be located in the same procedure as the On Error

Goto

statement). All errors are handled this way, including errors within

the original MATLAB code. An exception creates a Visual Basic

ErrObject

object in the current context in a variable called Err. (See the Visual Basic for

Applications documentation for a detailed discussion on VBA error handling.)

All of the examples in this section illustrate the typical error trapping logic

used in function call w rappers for MATLAB Builder for Excel components.

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MATLAB BUILDER EX 1 Guide de l'utilisateur Page 33