[linux][c/c++]代码片段02

• 2019 年 11 月 11 日
• 笔记

 gcc `pkg-config –cflags gtk+-3.0` -o example-1 example-1.c `pkg-config –libs gtk+-3.0`

#include <gtk/gtk.h>    static void  print_hello (GtkWidget *widget,               gpointer   data)  {      g_print ("Hello Worldn");  }    static void  activate (GtkApplication *app,            gpointer        user_data)  {      GtkWidget *window;      GtkWidget *button;      GtkWidget *button_box;        window = gtk_application_window_new (app);      gtk_window_set_title (GTK_WINDOW (window), "Window");      gtk_window_set_default_size (GTK_WINDOW (window), 200, 200);        button_box = gtk_button_box_new (GTK_ORIENTATION_HORIZONTAL);      gtk_container_add (GTK_CONTAINER (window), button_box);        button = gtk_button_new_with_label ("Hello World");      g_signal_connect (button, "clicked", G_CALLBACK (print_hello), NULL);      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 ("org.gtk.example", G_APPLICATION_FLAGS_NONE);      g_signal_connect (app, "activate", G_CALLBACK (activate), NULL);      status = g_application_run (G_APPLICATION (app), argc, argv);      g_object_unref (app);        return status;  }