小编Zyp*_*icx的帖子

我最近开始学习如何使用GTK +(3)创建GUI应用程序,方法是遵循gnome网站上的教程(下面的第一个链接).

所以,我开始学习前几个教程,一切都很顺利.这是我写的一些早期代码:

#include <gtk/gtk.h>

static void activate (GtkApplication* app, gpointer user_data){
  GtkWidget *window;
  GtkWidget *button_box;
  GtkWidget *button;

  window = gtk_application_window_new (app);
  gtk_window_set_title (GTK_WINDOW (window), "First application");
  gtk_window_set_default_size (GTK_WINDOW (window), 640, 480);

  button_box = gtk_button_box_new(GTK_ORIENTATION_HORIZONTAL);
  gtk_container_add(GTK_CONTAINER(window), button_box);

  button = gtk_button_new_with_label("Click this!");
  g_signal_connect_swapped(button, "clicked", G_CALLBACK(g_print), "Hello, world!\n");
  g_signal_connect_swapped(button, "clicked", G_CALLBACK(gtk_widget_destroy), window);
  gtk_container_add(GTK_CONTAINER(button_box), button);

  gtk_widget_show_all (window);
}

int main(int argc, char *argv[]){
  GtkApplication *app;
  int status;

  app = gtk_application_new ("com.example.application", G_APPLICATION_FLAGS_NONE);
  g_signal_connect (app, "activate", G_CALLBACK (activate), NULL);
  status = g_application_run (G_APPLICATION (app), …