In UWP apps, printing is typically handled through the Printing API, which involves user interaction via the PrintingUI for selecting printers, print settings, and previewing the print content. This approach ensures a consistent user experience and allows the user to have control over the printing process.
If you require silent printing or more advanced printing capabilities beyond what the Printing API offers, you may need to explore alternative solutions. One possible approach is to create a desktop bridge (Centennial) app, which combines UWP features with the flexibility of traditional Win32 applications. Desktop bridge apps have more access to system resources, including the ability to use Win32 APIs for printing. However, it's essential to consider the implications of using a desktop bridge app, as it may affect the app's behavior and distribution.
Keep in mind that the Windows ecosystem is continually evolving, and new features or changes may be introduced in future updates. Therefore, I recommend checking the official Microsoft documentation and the Windows Developer Blog for the latest information and updates on UWP and Windows 11.