Un ejemplo de AboutDialog usando Gtk.ApplicationWindow y Menu
Necesita ejecutar GTK+ 3.4 o superior para que funcione
#include <gtk/gtk.h>
/* Callback function in which reacts to the "response" signal from the user in
* the message dialog window.
* This function is used to destroy the dialog window.
*/
static void
on_close (GtkDialog *dialog,
gint response_id,
gpointer user_data)
{
/* This will cause the dialog to be destroyed */
gtk_widget_destroy (GTK_WIDGET (dialog));
}
/* Callback function for the response signal "activate" related to the SimpleAction
* "about_action".
* This function is used to cause the about dialog window to popup.
*/
static void
about_cb (GSimpleAction *simple,
GVariant *parameter,
gpointer user_data)
{
GtkWidget *about_dialog;
about_dialog = gtk_about_dialog_new ();
/* Lists of authors/ documentators to be used later, they must be initialized
* in a null terminated array of strings.
*/
const gchar *authors[] = {"GNOME Documentation Team", NULL};
const gchar *documenters[] = {"GNOME Documentation Team", NULL};
/* We fill in the information for the about dialog */
gtk_about_dialog_set_program_name (GTK_ABOUT_DIALOG (about_dialog), "AboutDialog Example");
gtk_about_dialog_set_copyright (GTK_ABOUT_DIALOG (about_dialog), "Copyright \xc2\xa9 2012 GNOME Documentation Team");
gtk_about_dialog_set_authors (GTK_ABOUT_DIALOG (about_dialog), authors);
gtk_about_dialog_set_documenters (GTK_ABOUT_DIALOG (about_dialog), documenters);
gtk_about_dialog_set_website_label (GTK_ABOUT_DIALOG (about_dialog), "GNOME Developer Website");
gtk_about_dialog_set_website (GTK_ABOUT_DIALOG (about_dialog), "http://developer.gnome.org");
/* We do not wish to show the title, which in this case would be
* "AboutDialog Example". We have to reset the title of the messagedialog
* window after setting the program name.
*/
gtk_window_set_title (GTK_WINDOW (about_dialog), "");
/* To close the aboutdialog when "close" is clicked we connect the response
* signal to on_close
*/
g_signal_connect (GTK_DIALOG (about_dialog), "response",
G_CALLBACK (on_close), NULL);
/* Show the about dialog */
gtk_widget_show (about_dialog);
}
static void
activate (GtkApplication *app,
gpointer user_data)
{
GtkWidget *window;
GSimpleAction *about_action;
/* Create a window with a title and a default size */
window = gtk_application_window_new (app);
gtk_window_set_title (GTK_WINDOW (window), "AboutDialog Example");
gtk_window_set_default_size (GTK_WINDOW (window), 200, 200);
/* Create a new simple action, giving it a NULL parameter type. It will
* always be NULL for actions invoked from a menu. (e.g clicking on an "ok"
* or "cancel" button)
*/
about_action = g_simple_action_new ("about", NULL);
/* Connect the "activate" signal to the appropriate callback function.
* It will indicate that the action was just activated.
*/
g_signal_connect (about_action, "activate", G_CALLBACK (about_cb),
GTK_WINDOW (window));
/* Adds the about_action to the overall action map. An Action map is an
* interface that contains a number of named GAction instances
* (such as about_action)
*/
g_action_map_add_action (G_ACTION_MAP (window), G_ACTION (about_action));
gtk_widget_show_all (window);
}
/* Callback function for the response signal "activate" from the "quit" action
* found in the function directly below.
*/
static void
quit_cb (GSimpleAction *simple,
GVariant *parameter,
gpointer user_data)
{
GApplication *application = user_data;
g_application_quit (application);
}
/* Startup function for the menu we are creating in this sample */
static void
startup (GApplication *app,
gpointer user_data)
{
GMenu *menu;
GSimpleAction *quit_action;
/* Initialize the GMenu, and add a menu item with label "About" and action
* "win.about". Also add another menu item with label "Quit" and action
* "app.quit"
*/
menu = g_menu_new ();
g_menu_append (menu, "About", "win.about");
g_menu_append (menu, "Quit", "app.quit");
/* Create a new simple action for the application. (In this case it is the
* "quit" action.
*/
quit_action = g_simple_action_new ("quit", NULL);
/* Ensure that the menu we have just created is set for the overall application */
gtk_application_set_app_menu (GTK_APPLICATION (app), G_MENU_MODEL (menu));
g_signal_connect (quit_action,
"activate",
G_CALLBACK (quit_cb),
app);
g_action_map_add_action (G_ACTION_MAP (app), G_ACTION (quit_action));
}
/* Startup function for the application */
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);
g_signal_connect (app, "startup", G_CALLBACK (startup), NULL);
status = g_application_run (G_APPLICATION (app), argc, argv);
g_object_unref (app);
return status;
}
En este ejemplo se usa lo siguiente:
GtkApplication
GtkWindow
GtkAboutDialog
GMenu
GActionMap