Visual Programming User Guide : Appendixes : Appendix B. Calling external functions using Smalltalk : Calling a platform function : Error handling
Error handling
When using platform functions, the most common errors are that the DLL cannot be loaded or that the function you are calling does not exist. You can perform an error check on the platform function as follows:
(platformFunction abtValidAddress)
ifFalse:
^CwMessagePrompter errorMessage:
'The function was not created successfully.'].
Other errors resulting from incorrect parameters should be handled by the function being called.
Last modified date: 01/29/2015