XnView Software

Currently, on the 'Actions' tab, the heading of the action parameters is irritating: As you can see in the screenshot above, the heading of the action parameters (here: 'Blur') is highlighted in a way that one might think that it is selected (which is not the case, as far as I can see there is no such thing like a selection here). I'd appreciate if the heading would be highlighted in a different way. Or why not use a group panel with the heading "Action 'Blur' - Parameters"?

Below please find a draft which...
...uses a group box for the action parameters.
...uses different labels for the tab and the group boxes.
...which has a better window title (version number and 'windows' are both superfluous, if needed, the user can see the version number in tab 'About')

It's not that irritating But yes I can see your point about it looking less stylish.

Personally i think this should remain (for now) and not replace it with a 'circle-ui' as you have done in your second screenshot.

I may think of an alternative heading style later and post.

I've already changed heading with group box in development version...