[Interest] Interest Digest, Vol 114, Issue 38

[Scott Bloom]

Here is why upgrading to Qt would be important.  The monitor on a perfectly working machine, dies.

They put in a new monitor for the engineer.  IT dept has decided the 4k monitor for 300 bucks is the standard.

Now the application which LOOKED and worked great, now looks like crap, because the version of Qt its built on, doesn’t have fully working high DPI support.

Some of their tools work great, others look like total crap. They notify vendors, we need high DPI support.

Multiple vendors stuck on Qt 5.12.9 are fubar,  customer sends letter out, fix it, and drop Qt if necessary.  (Yes we have gotten that in writing) if Qt GUI cant support high DPI monitors.

The response of, its fully supported on CentOS 7 with zero issues.  Worked until they had other tools that were working fine (not Qt based)

Scott

-----Original Message-----
From: Interest <interest-bounces at qt-project.org> On Behalf Of Hamish Moffatt
Sent: Saturday, March 27, 2021 5:49 PM
To: interest at qt-project.org
Subject: Re: [Interest] Interest Digest, Vol 114, Issue 38

On 27/3/21 9:04 pm, Roland Hughes wrote:
> If I read Scott's original posts correctly, the compelling reason is a 
> roughly $1 billion multi-year project was started and the OS 
> physically cannot be changed out until that many year project is over.
> The UI can be updated and new functionality added.
>
> You get such projects in the industrial controls world. Generally 
> custom device drivers for custom devices that are part of a production 
> process. It is too expensive in terms of down time and development 
> costs to switch to a new OS version.
>
> If memory serves he is talking about chip fabrication. Downtime is 
> most likely measured at > $1 million per day.
>
> In the medical device world it is almost impossible to change out an 
> OS without having to go down the "new product" approval process. That 
> is lengthy and expensive.
>
> You can, because the design of the device mitigates RISK the UI could 
> pose to patient safety/health, change out the UI library and go down 
> the "minor enhancements" (I forget the correct name) FDA approval 
> path. This is by no means free, but it is far less expensive and time 
> consuming.
>
> If you __have__ to open the hood for a regulatory change, like the 
> service password example I gave, most companies will try to freshen up 
> the screen library to get better graphics and performance 
> improvements. Every performance improvement can help extend battery life.
>
> On 3/26/2021 10:13 PM, interest-request at qt-project.org wrote:
>> I still haven't seen any convincing argument on why you expect to use 
>> a brand new Qt with ancient compilers/OSs?
>

None of that was an argument for upgrading Qt, just for not upgrading the rest.



Hamish

_______________________________________________
Interest mailing list
Interest at qt-project.org
https://lists.qt-project.org/listinfo/interest