Re: [fltk/fltk] Add a function to close all windows and return from Fl::run() (Issue #498) - Forums

Here is what the user originally wrote :

The issue is that calling system exit(), although simple, does not return from Fl::run() and destructors do not get called.

I would therefore tend to believe the new function should delete all windows and subwindows rather than hide them, because if they're only hidden, Fl_Window_Driver objects will be destroyed, but Fl_Window objects won't be. Class Fl_Window_Driver is not accessible to FLTK users, so program resources are likely to be stored in Fl_Window controlled-structures.

Does this make sense at all in terms of program resources if exit() is called after window destruction ? That is, wouldn't program resources be equally freed with and without the new function? If yes, the new function would make sense only if the program continues windowless after the function call. I may have missed something from the previous discussion.

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