https://bugs.winehq.org/show_bug.cgi?id=53260
--- Comment #4 from orowwith2os@gmail.com --- (In reply to Austin English from comment #3)
(In reply to orowwith2os from comment #2)
(In reply to Austin English from comment #1)
How are you trying to run the native application? It's not clear what you're asking for here.
What I am asking for is a popup menu that allows you to select a native application to open, say, a .txt file with, similar to how Windows will show a menu to select an app if there's no default app to run/open that file.
Where would this dialog be found/called from?
I'm having a bit of trouble understanding the sentence, but assuming you mean how Wine would show the dialog: XDG desktop portals. Wine can call xdg-desktop-portal on the host and it'll redirect to the DE/WM equivalent. Flatpak utilizes this inside its sandbox to give access to the host system, like for file pickers.