Implementing a custom signal with PyGObject

[Moritz Renftle <rueckmeldung renftle net>]

hi!

i'm trying to create a custom signal for a file-selection-button, code
is here: http://bpaste.net/show/DZwtKCPDBcpCv0g0NQCn/

the problem:
when the signal is emitted in the image_selection-method, it doesn't
call the connected signal handler, if this handler is not within the
same class. but if i connect the signal with a method in the same class,
it works.

is this a pygi-related bug or am i doing something wrong?

thanks in advance,
moritz