A major exception applies to the basic IupOpen routine in the core IUP library (iup.ew). Here the call to the C-function is simplified to avoid the need for any parameters. Whilst a parallel between ...

This is not specific to IUP or the bindings. It also works for running other graphical application libraries like CL-SDL2. There is a global callback for running functions when IUP event loop is idle.

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