[Pharo-users] How to open files in the underlying OS

I'm building an app with Pharo 11. The OS (for the moment) is Windows 10 home. At a certain point I need to open several types of files (pdf, wav, url, etc.) with the registered apps in Windows (or any other OS) and keep working in Pharo, in parallel. I couldn't find the way to do it - that is, to use the Windows shell. I loaded the Pharo-OS-Windows package, but when I evaluate something like WinShell shellOpen: 'c:\pharo.pdf' apparently nothing happens. The inspector gives me a WinHandle(@ 16r00000002) Which is the right way to do it? *Rui Viana Pereira*