[dwm] Virtual keyboards

Hi,

It's dishwasher time for my keyboard. For the days it'll be drying, any
ideas how to get a virtual keyboard like xkbd, xvkbd, or matchbox-keyboard
(last one seems nice enough) to run with dwm?

They all seem to work by drawing a window that is supposed to never receive
keyboard focus from the wm (see attachment), but *will* receive mouse button
clicks (?!).

Regards,
Peter