Gtk/KeysInfo

#include <gtkmm.h>

class MainWindow
:
    public Gtk::Window
{
public:

    MainWindow();
    virtual ~MainWindow();

private:

    bool get_key_info (GdkEventKey *);

    // Gtkmm Widgets...

    Gtk::Grid grid;
    Gtk::Entry entry;
    Gtk::Label label;
};


MainWindow::MainWindow()
{
    set_title ("Window Keys");

    grid.set_column_homogeneous (false);
    grid.set_row_homogeneous (false);
    grid.set_row_spacing (10);

    grid.attach (entry, 0, 0, 1, 1);
    grid.attach (label, 0, 1, 1, 1);

    entry.signal_key_press_event().connect (
        sigc::mem_fun (*this, &MainWindow::get_key_info));

    add (grid);

    show_all_children();
}

bool
MainWindow::get_key_info (GdkEventKey * key)
{
    label.set_text (

        Glib::ustring::compose ("State   : %1\n", key->state) +
        Glib::ustring::compose ("KeyVal  : %1\n", key->keyval) +
        Glib::ustring::compose ("KeyCode : %1\n", key->hardware_keycode) +
        Glib::ustring::compose ("Group   : %1\n", key->group) +
        Glib::ustring::compose ("Modifier? %1\n", key->is_modifier));

    return true;
}

MainWindow::~MainWindow()
{
}

int main (int argc, char *argv[])
{
    Glib::RefPtr<Gtk::Application> app =
        Gtk::Application::create (argc, argv);

    MainWindow main_window;

    return
        app->run (main_window);
}