The following code:

#include <gtkmm/treemodelcolumn.h>
#include <gtkmm/treeviewcolumn.h>

int main(int argc, char *argv[]) {
  
  Gtk::TreeModelColumn<int> col;
  Gtk::TreeViewColumn col2("A", col);
  
}

gives these errors in G++-3.4:

/usr/include/gtkmm-2.0/glibmm/object.h: In constructor
`Gtk::TreeViewColumn::TreeViewColumn(const Glib::ustring&, const
Gtk::TreeModelColumn<ColumnType>&) [with T_ModelColumnType = int]':
private2.cc:7:   instantiated from here
/usr/include/gtkmm-2.0/glibmm/object.h:76: error:
`Glib::ConstructParams::ConstructParams(const Glib::ConstructParams&)' is
private
/usr/include/gtkmm-2.0/gtkmm/treeviewcolumn.h:674: error: within this context

apparently this is because of this code:

template <class T_ModelColumnType>
TreeViewColumn::TreeViewColumn(const Glib::ustring& title,
                               const TreeModelColumn<T_ModelColumnType>&
column)
:
  Glib::ObjectBase(0), // not (yet) a custom class
  Gtk::Object(Glib::ConstructParams(class_init_(), "title", title.c_str(),
(char*) 0))
{
  pack_start(column, true /* expand */);
}

Apparently the Glib::ConstructParams needs to be copyable.  This is
something to do with passing a reference to a temporary.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12226 was mentioned as related.

I imagine this is quite common in Gtkmm but I think this is the only
instance in a header as its a template.

Not sure about workarounds here if copy construction is unacceptable,
perhaps making the params into a member variable would solve the problem.

Here's a test case of this, works in 3.2/3.3 but not 3.4:

struct A
{
  A(const char* p, ...);
private:
  A(const A&);
};
 
struct B
{
  B(const A&);
};
 
int main(int argc, char *argv[]) {
   
  B b( A("title", (char*) 0) );
   
}