#includeQString urlString = "https://www.example.com/path/to/resource.html"; KUrl url(urlString); QString host = url.host(); // host = "www.example.com"
#includeThis code creates a KUrl object from a URL string, sets a new host name using the `setHost()` method, and retrieves the updated URL string using the `prettyUrl()` method. The resulting URL string is `https://new-host.com/path/to/resource.html`. These examples use the `KUrl` class, which is provided by the KDE libraries. The package library required for this code is likely `kdelibs`.QString urlString = "https://www.example.com/path/to/resource.html"; KUrl url(urlString); url.setHost("new-host.com"); QString newUrlString = url.prettyUrl(); // newUrlString = "https://new-host.com/path/to/resource.html"