I have a PDF viewer which is an UWP app, is it possible to register to Windows platform so that this app can be launched by Windows when Desktop App calls shell API (ShellExecute with open verb) to open the PDF document?
I have a PDF viewer which is an UWP app, is it possible to register to Windows platform so that this app can be launched by Windows when Desktop App calls shell API (ShellExecute with open verb) to open the PDF document?
Yes, add a file type association in the AppxManifest. If you're using Visual Studio there is a graphical editor that will guide you (open the file package.appxmanifest)