How to unload application window in qt++?

Question

Qt

Suppose that a certain injector is written in QT in the form of a graphical application, after the injector starts a certain process, you need to unload this window so that it does not take up space in memory and generally does not annoy the eye, and after the process has worked out, clearly show the window. What is the best way to implement such behavior?

Answer 1

so as not to take up space in memory and

Well, the answer has already been formulated. In pluses, to free up memory, you need to do delete