Your development environment has an Error object that will be triggered if any Library operation causes an error


Err.Number =                Some specific number

Err.Source =                   The Libraries name

Err.Description =          The specific Library operation that generated the error, the command issued and the associated MatLab error if any


Note that the Log feature records both the commands and any associated errors.


VB6 and VBA:  


    Err.Clear

    On Error Resume Next

    lib.Execute "z=cosss(5)"

    If Err <> 0 Then

        MsgBox Err.Description, vbCritical, Err.Source

    End If


VB.NET


       Try

some operation what may cause an error

Catch

       Display something to the user ...  Err.Description

End Catch




           



Log Errors:


The logging feature will also log any errors.




Display Errors:

The Figure.Display operation can potentially produce a number of errors or issues.  These Display issues are shown in the Plot window itself