HighDPI and Qt Designer

davecotter

I too am using Qt Designer (Qt 5.9.1). My app shell looks great on mac (retina @ 200%) but tiny small on Windows 10 (HiDPI @ %200)

Notice the windows one is half the size of the mac one.

i've done this at startup:

QApplication		a(argc, argv);

a.setAttribute(Qt::AA_EnableHighDpiScaling);

but window still teensy.

any ideas?

sierdzio

@davecotter said in HighDPI and Qt Designer:

i've done this at startup:
QApplication a(argc, argv);

a.setAttribute(Qt::AA_EnableHighDpiScaling);

AA_EnableHighDpiScaling has to be set before Q*Application constructor is called. So in your case it will not turn this feature on. See the documentation.

This should work:

QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
QApplication app(argc, argv);

davecotter

oh! so that worked, even for my Widgets app! so yay!

sierdzio

Nice :-) Happy coding!