Set StyleName for one single control, yet no style for the rest of the app

[CyberPeter 14]

I can set a StyleName for a particular control, for instance:
 

MyCustomControlDescendant->StyleName = L"Windows11 Modern Light" ;

 

However, this only works if a Style has been applied application wide:
 

TStyleManager::TrySetStyle()

(Any Style)

Usually I prefer no Style, because Styles do flicker a lot etc.

But for a TrackBar for instance, an ugly control, a Style feels appropriate.

Sadly assigning one to just the control via StyleName is not possible, unless I first load a style application wide

 

My question, is it possible at all and if so, how ?

[Rollo62 565]

Flicker?  Is that the case under VCL?

Maybe this is interesting for setting per control
https://blogs.embarcadero.com/vcl-per-control-styles-coming-in-rad-studio-10-4/
 

[aehimself 402]

I had one situation when VCL styles flickered a lot, and that was if they were on an anchored / aligned panel and the form was being resized. Setting .ParentBackround := False on the panel solved this though.

[CyberPeter 14]

12 hours ago, Rollo62 said:

Flicker?  Is that the case under VCL?

Maybe this is interesting for setting per control
https://blogs.embarcadero.com/vcl-per-control-styles-coming-in-rad-studio-10-4/
 

VCL yes.
Thank you I will check out the article.

[CyberPeter 14]

2 hours ago, aehimself said:

I had one situation when VCL styles flickered a lot, and that was if they were on an anchored / aligned panel and the form was being resized. Setting .ParentBackround := False on the panel solved this though.

It's just a general thing in more complex applications (I find), especially with ListView and TreeView etc. and especially when the computer runs a bit slower (had some pc fan issues and the reduced speed made it very obvious).
In my applications styles are implemented to be able to support a dark theme but I personally prefer to use simply Windows for the best performance.

 

For a static application with some buttons etc, styles can be nice, but for faster moving data, scrolling etc. Styles reduce the perceived quality of the application (in my view).
When I dynamically create a form with lots of components on it (e.g. an Options Window) there is very obvious flicker as well while the window comes into view

Edited 7 hours ago by CyberPeter

[Brian Evans 112]

Don't forget the difference between a user trying to get work done in an application vs a developer playing/scrolling around. I find a modern styled application can be easier for a user to read and follow as they work on the content shown in the application. Some appreciate being able to adjust things to their taste - especially older workers desiring larger fonts and more contrast. Users rarely dynamically resize forms these days - either it is full screen or snapped to half a screen or some other region. 

 

I have gotten distracted working on things that seemed important - speed while users really wanted predictability. For example a form frozen for 4 seconds feels worse to a user than an active form showing progress that takes 15 seconds. When developing I might scroll through 1000's of records while a user is more likely to search and display 10-100 records and examine them when actually doing work.