Callback Framework for C++
You can discuss libsigc++ questions on GNOME’s Discourse instance, under the Platform/Language bindings category with a cplusplus tag.
There is an old mailing list, which is now closed for new posts. There is an archive of messages here. Please do not email the developers directly.
Please report bugs as GitHub issues, or provide improvements as GitHub pull requests.
The libsigc++ source code is in the libsigcplusplus repository on GitHub.