Tuto WEBDEV 25

Part 9: Useful features of WEBDEV 337 Types of affected errors Two types of errors can occur in WLanguage: • the "non-fatal" errors (also called runtime errors): in most cases, these errors are managed in the code and they do not stop the application. For example, opening a file that cannot be accessed or an archive that does not exist. • the "fatal" errors (also called programming errors): in most cases, these errors are linked to a development problem (access to a non-declared file, use of non-existing controls ...). A "fatal" error can also occur after a "non-fatal" error that was not processed properly. In this case, the application will be stopped. The mechanism for managing errors is used to manage these two types of errors according to different methods in order to specify behaviors adapted to the errors that occur. Automatic management of errors: a training example ▶ To understand the different error cases as well as their management, we will be using a training example supplied with WEBDEV. 1. Display the WEBDEV home page (Ctrl + <). 2. On the home page, click "Open an example". The list of complete examples and training examples supplied with WEBDEV is displayed. 3.  Type "Error" in the search area. Only the examples containing this word are listed. 4. Select the "WW_Auto_Error_Management" project. The project is loaded.