Since the language of the messagebox() is dependent on the OS, I would suggest you create your own messagebox class.

>How can I change the language used in the dialog box buttons of the Messagebox() function?
>
>When I set the nDialogBoxType parameter of the Messagebox() function to 4 in order to display the "Yes", "No" dialog buttons, I need it to display "Oui" and "Non" instead.