RE: [gtkmm] creating a C callback from a SigC::Slot without a Sig nalProxy

[Murray Cumming Comneon com]

----Original Message-----
> From: ERDI Gergo [mailto:cactus cactus rulez org] 
> Sent: Freitag, 28. März 2003 14:10
> To: Cumming Murray (COMNEON Linz)
> Cc: GTKmm Mailing List; libsigc-mlist lists sourceforge net
> Subject: RE: [gtkmm] creating a C callback from a SigC::Slot 
> without a Sig nalProxy
> 
> 
> On Thu, 27 Mar 2003 Murray Cumming Comneon com wrote:
> 
> > I guess the problem is the async part, meaning that the 
> function will return
> > before the callback has actually been called. This function 
> doesn't seem to
> > have a "destroy user data" callback parameter so the 
> user_data would have to
> > survive _forever_.
> 
> While getting bored to death today I thought about this some more and
> realized that the callback _is_ the 'destroy user data' 
> callback as well,

So, just make a regular proxy like the ones you see in the TreeView .cpp
files, and do a "delete this" in the callback instead of the destroy
callback.
> since it's only going to be called once. So, I guess my 
> question can now
> be reduced to (emphasized for our readers on the SigC list who have
> missed the beginning of this thread):
> 
> How can I ref/unref a SigC::Slot?

I don't think you need to worry about that. Just delete your copy of the
slot. Reference-counting is automatic.

Murray Cumming
murrayc usa net
www.murrayc.com