On Tue, 2017-07-04 at 09:44 +0100, Daniel Boles wrote: > How/can I receive an event when some object of my choice is > destroyed, so that I can take appropriate action? > > Here's an example I came up against lately. I should probably > refactor the code so I don't need to do things this way... but it > illustrates the question quite well. I have a ComboBox where, via > some boring exposition, I want to put a signal_changed() handler on > its StyleContext. However, that handler holds a reference to a row in > the ComboBox's model. Therefore, I need to receive notification when > that model dies (i.e. when all holders of RefPtrs release them), so > that I can disconnect that signal_changed() handler and therefore > stop it from trying to access a dead row. [snip]
This shouldn't generally happen. The sigc::trackable base class should take care of this. Maybe it would be best to try to reduce this to a simple test case. -- Murray Cumming murr...@murrayc.com www.murrayc.com _______________________________________________ gtkmm-list mailing list gtkmm-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtkmm-list
