Question

我一直在使用gtkmm编写Gtk +应用程序，我正在尝试添加一个调用回调的全局键盘快捷键。不幸的是，Gtk :: AccelGroup的connect（）方法在gtkmm中不可用，显然是故意的，因为你可以使用ActionGroups建立连接......

无论如何，我有以下代码：

actions_= Gtk::ActionGroup::create();
actions_->set_accel_group(Gtk::AccelGroup::create());

actions_->add(
    Gtk::Action::create("new"), Gtk::AccelKey("<control>n"),
    sigc::mem_fun(this, &Window::new_buffer_thing)
);

_gtk_window().add_accel_group(actions_->get_accel_group());

在没有警告的情况下编译并运行，但键盘快捷方式不执行任何操作。我已经花了好几个小时摆弄这个，所以任何帮助或方向都会受到赞赏！

我做错了什么吗？为什么加速器不起作用？

Answer 1

回答这个问题有点晚了，但我今天也在解决同样的问题，即使在不同的环境中：python，gtk2。

根据我对this tutorial的一些小实验的理解，除非与工具箱或菜单栏相关联，否则操作不会处于活动状态。太糟糕了，就这样做，将工具栏打包成一个VBox，让它看不见，就像这样：

resources :votes

知道相同的方法是否有助于OP会很有趣。

Answer 2

阅读mariotomo的答案后，这是我对gtkmm3的隐藏菜单栏的实现。

快捷键加速器可用于隐藏的菜单栏：）

#include <iostream>
#include <gtkmm.h>

using Gtk::Application;
using Gtk::Box;
using Gtk::Builder;

using Gio::SimpleActionGroup;

using std::cout;

class ExampleWindow : public Gtk::Window
{
public:
    ExampleWindow(const Glib::RefPtr<Application>& app);

private:
    void on_action_file_new();
    // for hidden menubar
    void on_action_secret();

    Box box1;
    Box box2;

    Glib::RefPtr<Builder>           builder;
    Glib::RefPtr<SimpleActionGroup> actiongroup;
};

ExampleWindow::ExampleWindow(const Glib::RefPtr<Application>& app)
    : box1(Gtk::ORIENTATION_VERTICAL)
    , box2(Gtk::ORIENTATION_VERTICAL)
{
    set_title("Menubar test");
    set_default_size(400, 200);

    add(box1);

    box1.add(box2);

    //Define the actions:
    actiongroup = Gio::SimpleActionGroup::create();

    actiongroup->add_action("new"   , sigc::mem_fun(*this, &ExampleWindow::on_action_file_new));
    actiongroup->add_action("secret", sigc::mem_fun(*this, &ExampleWindow::on_action_secret));

    insert_action_group("example"       , actiongroup);
    insert_action_group("example-hidden", actiongroup);

    builder = Gtk::Builder::create();

    app->set_accel_for_action("example.new"          , "<Primary>n");
    app->set_accel_for_action("example-hidden.secret", "<Primary>m");

    const char *visible_ui_info =
        "<interface>"
        "  <menu id='visible-menubar'>"
        "    <submenu>"
        "      <attribute name='label' translatable='yes'>_File</attribute>"
        "      <section>"
        "        <item>"
        "          <attribute name='label' translatable='yes'>_New</attribute>"
        "          <attribute name='action'>example.new</attribute>"
        "          <attribute name='accel'>&lt;Primary&gt;n</attribute>"
        "        </item>"
        "      </section>"
        "    </submenu>"
        "  </menu>"
        "</interface>";
    
    const char *hidden_ui_info = 
        "<interface>"
        "  <menu id='hidden-menubar'>"
        "    <submenu>"
        "      <attribute name='label' translatable='yes'>_Secret</attribute>"
        "      <section>"
        "        <item>"
        "          <attribute name='label' translatable='yes'>_Key</attribute>"
        "          <attribute name='action'>example-hidden.secret</attribute>"
        "          <attribute name='accel'>&lt;Primary&gt;m</attribute>"
        "        </item>"
        "      </section>"
        "    </submenu>"
        "  </menu>"
        "</interface>";

    builder->add_from_string(visible_ui_info);
    builder->add_from_string(hidden_ui_info);

    // Get the visible menubar:
    auto object1  = builder->get_object("visible-menubar");
    auto gmenu1   = Glib::RefPtr<Gio::Menu>::cast_dynamic(object1);
    auto menubar1 = Gtk::make_managed<Gtk::MenuBar>(gmenu1);
    box1.pack_start(*menubar1, Gtk::PACK_SHRINK);

    // Get the hidden menubar
    auto object2  = builder->get_object("hidden-menubar");
    auto gmenu2   = Glib::RefPtr<Gio::Menu>::cast_dynamic(object2);
    auto menubar2 = Gtk::make_managed<Gtk::MenuBar>(gmenu2);
    box2.pack_start(*menubar2, Gtk::PACK_SHRINK);

    show_all_children();
    box2.hide();
}

void ExampleWindow::on_action_file_new()
{
    cout << "New menu item was selected.\n";
}

void ExampleWindow::on_action_secret()
{
    cout << "Secret menu item was selected.\n";
}

int main()
{
    auto app = Application::create("org.gtkmm.example");

    ExampleWindow window(app);

    return app->run(window);
}

连接Gtk +中的关键加速器（gtkmm）

2 个答案: