I made some tests with the menus_and_toolbars example in
gtkmm-documentation. Something like this will probably work:
Glib::ustring ui_info =
"<interface>"
" <menu id='menu-linuxchess'>"
" <submenu>"
...
" </submenu>"
" </menu>"
"</interface>";
Glib::ustring ui_info2 =
"<interface>"
" <menu id='menu-linuxchess-part2'>"
" <submenu id="xyz">"
...
" </submenu>"
" </menu>"
"</interface>";
m_refBuilder = Gtk::Builder::create();
m_refBuilder->add_from_string(ui_info);
m_refBuilder->add_from_string(ui_info2); auto object =
m_refBuilder->get_object("menu-linuxchess");
auto gmenu = Glib::RefPtr<Gio::Menu>::cast_dynamic(object);
if (gmenu)
{
auto subobject = m_refBuilder->get_object("xyz");
auto gsubmenu = Glib::RefPtr<Gio::Menu>::cast_dynamic(subobject);
if (gsubmenu)
gmenu->append_submenu("SomeLabel", gsubmenu);
}
On 2020-07-27 15:50, Carlo Wood wrote:
Hi,
the documentation at
https://developer.gnome.org/gtkmm/stable/classGtk_1_1Builder.html#ae3520ee31a98ac30b728f93522de8df5
says: "Parses a string containing a GtkBuilder UI definition and merges
it with the current contents of the builder."
But when I try this:
Glib::ustring ui_info =
"<interface>"
" <menu id='menu-linuxchess'>"
" <submenu>"
...
" </submenu>"
" </menu>"
"</interface>";
Glib::ustring ui_info2 =
"<interface>"
" <menu id='menu-linuxchess'>"
" <submenu>"
...
" </submenu>"
" </menu>"
"</interface>";
m_refBuilder = Gtk::Builder::create();
m_refBuilder->add_from_string(ui_info);
m_refBuilder->add_from_string(ui_info2);
Then the last line *replaces* the content of m_refBuilder.
Nothing is merged, I just get a menu with the definition
from ui_info2.
How can I do this?
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