Sorry, I don't know what is this supposed to prove, but I can definitely assure you that all the mentioned controls, and many others, are exactly native controls under the 3 first tier platforms (MSW, GTK and macOS).
> Do you have any proof?
Proof of absence of something is hard to make, all I can say is that you can go through MSDN, GTK and Cocoa documentation to convince yourself.
Sorry, I don't know what is this supposed to prove, but I can definitely assure you that all the mentioned controls, and many others, are exactly native controls under the 3 first tier platforms (MSW, GTK and macOS).
> Do you have any proof?
Proof of absence of something is hard to make, all I can say is that you can go through MSDN, GTK and Cocoa documentation to convince yourself.