[Development] High-dpi Qt best practices

[Sorvig Morten]

On Oct 9, 2012, at 1:53 PM, Olivier Goffart <olivier at woboq.com>
 wrote:
> 
>>>> This is a behaviour change that breaks existing code (in applications and
>>>> in Qt), so it's opt-in via QT_HIDPI_AWARE. 
> 
> I don't think having opt in like that is a good idea. It will be a mess when 
> you mix different libraries or piece of code together.
> That is why I think one need an explicit way to do it.

That's a good point - QT_HIDPI_AWARE applies to all Qt code in the process. 

For now I think this is good enough and is not something I want to change. We can look at alternatives later on if you want to get into the details of the changes.

> 
> Can I have a link to the gerrit change?

Qt 4: https://codereview.qt-project.org/#change,33266
Qt 5: https://codereview.qt-project.org/#change,36293

Morten