Comment by simion314

I would say that Qt, GTK, Swing are perfect for application for doing your job. I know it sucks when this applications will not use the native file manager (Qt uses it but GTK refused maybe still refuses to integrate ) but at the end of the day most applicatons are created for heavy work and the UX is more important then the border radius of a button.

So my opinion is if you want an app that looks perfect in screenshots or your customers are liking the buttonsand complain if the corners are not round enough then you should use the native looking stuff, but if your customers do their job using this app and every minute lost because of bugs. missing feature or bad UX then the look of the toolkit is not the issue, focus on what the customer is doing , see where you can improve his work and you will have happy customers.