[Interest] dealing with high-DPI on Windows

[Hamish Moffatt]

Does anyone have any suggestions for dealing with high-DPI environments 
in Qt on Windows? Does Qt have anything built-in which helps?

On Mac we drop in @2x images, enable Qt::AA_UseHighDpiPixmaps and life 
is mostly good. But I don't think this happens on Windows (and usually 
devicePixelRatio is < 2 anyway), so do I need to do inspect the screen 
resolution and do this load different images manually? And make sure I 
handle the application being dragged to a different screen etc?


Hamish