Right-clicking doesn't work (it just opens the app) and dragging doesn't work either (they appear to be un-draggable). What is the correct way to do this?
As the functionality is not part of Lxqt - I don't think there is one correct way of doing it.
One option is to copy the appropriate launcher from /usr/share/applications but as Lxqt uses PCManFM you have a second option
- Open the file manager
- Click on Applications
- Navigate to the launcher you want on the desktop
- Drag it to the desktop and and select Copy here from the confirmation dialog
Okay, this works for the desktop but not for the quicklaunch.
EDIT: Nevermind. The usr/share/application icons work for the quicklaunch.