You can cancel the call, and if the server ignores you, it's left working on a canceled operation.
Nothing. Nothing at all.
Escaping the trap.
It's not the Windows version that lost it. It's your display driver that lost it.
You can't, really. It's not your window.
Single-parameter constructors are also conversions.
Variadic templates to the rescue.
They aren't valid, but then again, nothing would have been.
You did generate them, indirectly.
Going through old virtual boxes of stuff.