Re: best practice with ArrayHandle

[Krzesimir Nowak <qdlacz gmail com>]

On Mon, 2011-02-21 at 16:53 +0100, Yann Leydier wrote:
> Hi,
> 
> I'm currently preparing my code to be Windows-friendly. I wrote the 
> following lines to enable Windows-style buttons ordering in a dialog and 
> I wondered if there is a simplest way to do it :
> 
> dial.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
> dial.add_button(Gtk::Stock::ADD, Gtk::RESPONSE_ACCEPT);
> int altbut[] = { Gtk::RESPONSE_ACCEPT, Gtk::RESPONSE_CANCEL };
> dial.set_alternative_button_order_from_array(Glib::ArrayHandle<int>(altbut, 
> 2, Glib::OWNERSHIP_NONE));
> 

Best practice with ArrayHandle is "Just don't use it explicitly" - it is
just a helper type to handle memory management and is convertible from C
arrays to std::{vector,list,deque} and vice versa. It is meant to be
used only by wrappers like glibmm or gtkmm - not by users of these
wrappers. So your code should look like this:

dial.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
dial.add_button(Gtk::Stock::ADD, Gtk::RESPONSE_ACCEPT);

std::vector<int> altbut;

altbut.reserve(2);
altbut.push_back(Gtk::RESPONSE_ACCEPT);
altbut.push_back(Gtk::RESPONSE_CANCEL);
dial.set_alternative_button_order_from_array(altbut);

> Thanks!
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