text: #include "my_application.h"
  
  #include <flutter_linux/flutter_linux.h>
  
  #include "flutter/generated_plugin_registrant.h"
  
  struct _MyApplication {
    GtkApplication parent_instance;
  };
  
  G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
  
  // Implements GApplication::activate.
  static void my_application_activate(GApplication* application) {
    GtkWindow* window =
        GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application)));
    GtkHeaderBar *header_bar = GTK_HEADER_BAR(gtk_header_bar_new());
    gtk_widget_show(GTK_WIDGET(header_bar));
    gtk_header_bar_set_title(header_bar, "Amadeo");
    gtk_header_bar_set_show_close_button(header_bar, TRUE);
    gtk_window_set_titlebar(window, GTK_WIDGET(header_bar));
    gtk_window_set_default_size(window, 1280, 720);
    gtk_widget_show(GTK_WIDGET(window));
  
    g_autoptr(FlDartProject) project = fl_dart_project_new();
  
    FlView* view = fl_view_new(project);
    gtk_widget_show(GTK_WIDGET(view));
    gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
  
    fl_register_plugins(FL_PLUGIN_REGISTRY(view));
  
    gtk_widget_grab_focus(GTK_WIDGET(view));
  }
  
  static void my_application_class_init(MyApplicationClass* klass) {
    G_APPLICATION_CLASS(klass)->activate = my_application_activate;
  }
  
  static void my_application_init(MyApplication* self) {}
  
  MyApplication* my_application_new() {
    return MY_APPLICATION(g_object_new(my_application_get_type(), nullptr));
  }
  