User`s guide

Handling Errors During a Method Call
3-13
Handling Errors During a Method Call
Errors that occur while creating a class instance or during a class method
create an exception in the current procedure. Visual Basic provides 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 wrappers for MATLAB Excel Builder components.