[gst-devel] does signal has last param user_data in gstreamer?

[Farkas Levente]

hi,
let see an example: both gst-inspect input-selector and
http://www.gstreamer.net/data/doc/gstreamer/head/gst-plugins-bad-plugins/html/gst-plugins-bad-plugins-input-selector.html
said that the signal "switch" has a last argument as
gpointer user_data
and the signal "block" has no such last argument in the gst-inspect
output, but has in the above docs.
but when i look onto the source code in gstinputselector.h none of these
signal has last param!

since there are many signal (almos all) which has last param user_data
so my questions in general:
is the last param user_data exist or not at all? or it's something glib
specific thing or ...?
thanks in advance.
regards.

-- 
  Levente                               "Si vis pacem para bellum!"