1. XML tags completion for known tags. This can be done for *.UI files,
and maybe some part of *.QS. Basic XML structure is already know -
so even for unknown XML variants - the IDE knows what tag to close.
That would indeed be very cool.
2. Class implementations - for example, I derive from an interface and
pressing control+enter on the type will add missing methods.
That already works if you right-click on the implementation class' name
and choose Refactor -> Insert Virtual Function of Base Classes.
You get same menu with Alt+Enter on the class name.
There are a lot more refactoring actions available, all context aware.
Maybe you need some time to explore them all.
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