Installed wine stable, winetricks, PoL, Q4wine. No "Wine Windows Program Loader" entry on Dolphin context menu, neither on KDE launcher menu. Can only open .exe via Q4wine or console.
Kubuntu 18.04(Almost fresh install)
linux 4.15.0-20-generic(x86_64)
Plasma 5.12.4
Best Answer
Actually the launcher is misplaced in Ubuntu 18+, Ubuntu made a mistake, all the other distributions based on ubuntu including linux mint inherited the bug, nobody cared to fix
Run the below command in terminal
Now right click the windows app and click open with , you can now see open with "wine windows program loader" in the applications list.