Re: Object copying

[Jonathon Jongsma <jonathon quotidian org>]

On Fri, 2010-09-10 at 19:02 +0200, Glus Xof wrote:
> Hi all,
> 
> After trying to make the copy of an object, I get the following message:
> 
> ---------------------------------------------------------------------------------------------------------------------------------------------------------------------
> In file included from ./groups.h:8,
>                  from groups.cc:1:
> /usr/local/include/gtkmm-2.4/gtkmm/treemodelcolumn.h: In member
> function ‘User::KeyModelColumns&
> User::KeyModelColumns::operator=(const User::KeyModelColumns&)’:
> /usr/local/include/gtkmm-2.4/gtkmm/treemodelcolumn.h:92: error:
> ‘Gtk::TreeModelColumnRecord&
> Gtk::TreeModelColumnRecord::operator=(const
> Gtk::TreeModelColumnRecord&)’ is private
> ././user.h:148: error: within this context
> ././user.h: In member function ‘User& User::operator=(const User&)’:
> ././user.h:16: note: synthesized method ‘User::KeyModelColumns&
> User::KeyModelColumns::operator=(const User::KeyModelColumns&)’ first
> required here
> /usr/local/include/gtkmm-2.4/gtkmm/comboboxtext.h:49: error:
> ‘Gtk::ComboBoxText& Gtk::ComboBoxText::operator=(const
> Gtk::ComboBoxText&)’ is private
> ././user.h:16: error: within this context
> /usr/local/include/gtkmm-2.4/gtkmm/comboboxtext.h:49: error:
> ‘Gtk::ComboBoxText& Gtk::ComboBoxText::operator=(const
> Gtk::ComboBoxText&)’ is private
> ././user.h:16: error: within this context
> /usr/local/include/gtkmm-2.4/gtkmm/entry.h:122: error: ‘Gtk::Entry&
> Gtk::Entry::operator=(const Gtk::Entry&)’ is private
> ././user.h:16: error: within this context
> /usr/local/include/gtkmm-2.4/gtkmm/button.h:80: error: ‘Gtk::Button&
> Gtk::Button::operator=(const Gtk::Button&)’ is private
> ././user.h:16: error: within this context
> /usr/local/include/gtkmm-2.4/gtkmm/treeview.h:199: error:
> ‘Gtk::TreeView& Gtk::TreeView::operator=(const Gtk::TreeView&)’ is
> private
> ././user.h:16: error: within this context
> /usr/local/include/gtkmm-2.4/gtkmm/table.h:193: error: ‘Gtk::Table&
> Gtk::Table::operator=(const Gtk::Table&)’ is private
> ././user.h:16: error: within this context
> /usr/local/include/gtkmm-2.4/gtkmm/menu.h:77: error: ‘Gtk::Menu&
> Gtk::Menu::operator=(const Gtk::Menu&)’ is private
> ././user.h:16: error: within this context
> groups.cc: In member function ‘void Groups::set_user_object(const User&)’:
> groups.cc:113: note: synthesized method ‘User& User::operator=(const
> User&)’ first required here
> ---------------------------------------------------------------------------------------------------------------------------------------------------------------------
> 
> What's happen ???

The object is not copyable.  you'll need to pass it by reference
(pointer, reference) rather than by value.