Dongle for wireless device doesn't work that way.
The dongle pretend to be the device and take care of all the communication.
From the OS point of view, using a wired usb keyboard or a wireless
keyboard using a dongle is the same thing.
Also, bluetooth keyboard doesn't provide dongle.
I wasn't referring to one of those RF-dongles from Logitech, but a usb
gizmo that specifically creates a bluetooth 'network' that actual real
bluetooth devices can connect to, for example
http://www.amazon.com/dp/B007Q45EF4
