前言

• glade生成的xml格式不被gtkmm4支持, 需要作修改

来看一个从字符串中生成UI的例子

• #include <gtkmm/application.h>
  #include <gtkmm.h>
  #include <iostream>
  using namespace std;
  
  class ExampleWindow : public Gtk::Window
  {
  public:
      ExampleWindow();
      virtual ~ExampleWindow() {};
      void on_action_file_new()
      {
          cout << "New" << endl;
      };
      void on_action_file_open() {};
      void on_action_file_quit() {};
  
      Gtk::Box m_Box;
  };
  ExampleWindow::ExampleWindow()
  {
      auto m_refBuilder = Gtk::Builder::create();
  
      Glib::ustring ui_info =
          "<interface>"
          "  <menu id='menubar'>"
          "    <submenu>"
          "      <attribute name='label' translatable='yes'>_File</attribute>"
          "      <section>"
          "        <item>"
          "          <attribute name='label' translatable='yes'>_New</attribute>"
          "          <attribute name='action'>example.new</attribute>"
          "        </item>"
          "      </section>"
          "      <section>"
          "        <item>"
          "          <attribute name='label' translatable='yes'>_Quit</attribute>"
          "          <attribute name='action'>example.quit</attribute>"
          "        </item>"
          "      </section>"
          "    </submenu>"
          "    <submenu>"
          "      <attribute name='label' translatable='yes'>_Edit</attribute>"
          "      <item>"
          "        <attribute name='label' translatable='yes'>_Copy</attribute>"
          "        <attribute name='action'>example.copy</attribute>"
          "      </item>"
          "      <item>"
          "        <attribute name='label' translatable='yes'>_Paste</attribute>"
          "        <attribute name='action'>example.paste</attribute>"
          "      </item>"
          "    </submenu>"
          "  </menu>"
          "</interface>";
      //绑定行动的对应动作 实际绑定
      auto m_refActionGroup = Gio::SimpleActionGroup::create();
      m_refActionGroup->add_action("new", sigc::mem_fun(*this, &ExampleWindow::on_action_file_new));
      m_refActionGroup->add_action("open", sigc::mem_fun(*this, &ExampleWindow::on_action_file_open));
      m_refActionGroup->add_action("quit", sigc::mem_fun(*this, &ExampleWindow::on_action_file_quit));
      insert_action_group("example", m_refActionGroup);//行动组example 实体诞生
  
      m_refBuilder->add_from_string(ui_info);
      //m_refBuilder->add_from_file("K:\\CPlusPlus\\cgcc\\Xml_UI.xml");
  
      auto gmenu = m_refBuilder->get_object<Gio::Menu>("menubar");
      auto pMenuBar = Gtk::make_managed<Gtk::PopoverMenuBar>(gmenu);
      m_Box.append(*pMenuBar);
      set_child(m_Box);
  
      pMenuBar->set_visible(true);
      m_Box.set_visible(true);
  }
  int main(int argc, char* argv[])
  {
      auto app = Gtk::Application::create("org.gtkmm.example");
      //app快捷键 键位设置对应行动 预先设置
      app->set_accel_for_action("example.new", "<Primary>n");//表示Ctrl+N
      app->set_accel_for_action("example.quit", "<Primary>q");//表示Ctrl+Q
      app->set_accel_for_action("example.copy", "<Primary>c");//表示Ctrl+C
      app->set_accel_for_action("example.paste", "<Primary>v");//表示Ctrl+V
      //Shows the window and returns when it is closed.
      return app->make_window_and_run<ExampleWindow>(argc, argv);
  }
  

  可以把那些字符串放入一个xml文件
  
  然后
  m_refBuilder->add_from_file(“K:\CPlusPlus\cgcc\Xml_UI.xml”);
  代替上面的add_from_string.