> On 11 Nov 2015, at 01:40, Adam Light <acli...@gmail.com> wrote:
> 
> I built Qt 5.6 (latest from the 5.6 git branch as of this morning) and tested 
> our application with the build on Windows 10. I'm calling 
> QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
> before the QApplication is created.
> 
> I don't have an actual High DPI monitor so I've been testing by clicking the 
> "scaling level" link in the Display control panel applet and setting the 
> scaling factor to 200%. I then click OK, Apply, log out of my account, and 
> log back in.

You can also set the QT_SCALE_FACTOR environment variable for quick testing 
like like this.  (Set it to 2, not 200%.)

> 
> First of all, thanks to everyone who's been involved in improving the HiDPI 
> code for Qt 5.6. HiDPI is much better now in 5.6 compared to 5.5.
> 
> I've noticed that a lot of the UI elements that look like they're using icons 
> for which a HiDPI version is not being used, including:
>  * radio/check buttons
>  * arrows on combo boxes, tool buttons, scroll bars, tab widgets
>  * The ? and X icon of QMdiSubwindow
>  * The clear button (grey X) of a QLineEdit

This could be an nice opportunity for a contribution from someone with artistic 
ambitions.

Morten




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