#include <stdio.h>
#include <gtk/gtk.h>

static void print_hello(GtkWidget *widget, gpointer data) {
  g_print("Hello World\n");
}

static void activate(GtkApplication *app, gpointer data) {
  GtkWidget *window = gtk_application_window_new(app);
  gtk_window_set_title(GTK_WINDOW(window), "Window");
  gtk_window_set_default_size(GTK_WINDOW(window), 600, 320);

  GtkButtonBox *button_box = gtk_button_box_new(GTK_ORIENTATION_HORIZONTAL);
  /* 按钮 */
  GtkButton *button = gtk_button_new_with_label("Hello");
  gtk_container_add(GTK_CONTAINER(button_box), button);

  gtk_container_add(GTK_CONTAINER(window), button_box);

  g_signal_connect(button, "clicked", G_CALLBACK(print_hello), NULL);
//  g_signal_connect_swapped(button, "clicked", G_CALLBACK(gtk_window_close), window);

  gtk_widget_show_all(window);
}
int main(int argc, char **argv) {
  GtkApplication *app = gtk_application_new("com.simon.clang", G_APPLICATION_DEFAULT_FLAGS);
  g_signal_connect(app, "activate", G_CALLBACK(activate), NULL);

  int status = g_application_run(app, argc, argv);

  g_object_unref(app);

  return status;
}