1 #include <gtk/gtk.h>
2
3
4 /*Callback function in which reacts to the "response" signal. Be sure to place
5 it before the function it is called in*/
6 static void
on_response(GtkDialog * dialog,gint response_id,gpointer user_data)7 on_response (GtkDialog *dialog,
8 gint response_id,
9 gpointer user_data)
10 {
11 /*For demonstration purposes, this will show the int value
12 of the response type*/
13 g_print ("response is %d\n", response_id);
14
15 /*This will cause the dialog to be destroyed*/
16 gtk_widget_destroy (GTK_WIDGET (dialog));
17 }
18
19
20
21 /*Callback function in which reacts to the "clicked" signal*/
22 static void
show_dialog(GtkButton * button,gpointer user_data)23 show_dialog (GtkButton *button,
24 gpointer user_data)
25 {
26 GtkWindow *window = user_data;
27 GtkWidget *dialog;
28 GtkWidget *content_area;
29 GtkWidget *label;
30
31 gint response_id;
32
33 /*Create the dialog window. Modal windows prevent interaction with other
34 windows in the same application*/
35 dialog = gtk_dialog_new_with_buttons ("A Gtk+ Dialog",
36 window,
37 GTK_DIALOG_MODAL,
38 GTK_STOCK_OK,
39 GTK_RESPONSE_OK,
40 NULL);
41
42 /*Create a label and attach it to the content area of the dialog*/
43 content_area = gtk_dialog_get_content_area (GTK_DIALOG (dialog));
44 label = gtk_label_new ("This demonstrates a dialog with a label");
45 gtk_container_add (GTK_CONTAINER (content_area), label);
46
47 /*The main purpose of this is to show dialog's child widget, label*/
48 gtk_widget_show_all (dialog);
49
50 /*Connecting the "response" signal from the user to the associated
51 callback function*/
52 g_signal_connect (GTK_DIALOG (dialog),
53 "response",
54 G_CALLBACK (on_response),
55 NULL);
56
57 }
58
59
60
61 static void
activate(GtkApplication * app,gpointer user_data)62 activate (GtkApplication *app,
63 gpointer user_data)
64 {
65 GtkWidget *window;
66 GtkWidget *button;
67
68 /*Create a window with a title and a default size*/
69 window = gtk_application_window_new (app);
70 gtk_window_set_title (GTK_WINDOW (window), "GNOME Button");
71 gtk_window_set_default_size (GTK_WINDOW (window), 250, 50);
72
73 /*Create a button with a label, and add it to the window*/
74 button = gtk_button_new_with_label ("Click Me");
75 gtk_container_add (GTK_CONTAINER (window), button);
76
77 /*Connecting the clicked signal to the callback*/
78 g_signal_connect (GTK_BUTTON (button),
79 "clicked",
80 G_CALLBACK (show_dialog),
81 GTK_WINDOW (window));
82
83 gtk_widget_show_all (window);
84 }
85
86
87
88 int
main(int argc,char ** argv)89 main (int argc, char **argv)
90 {
91 GtkApplication *app;
92 int status;
93
94 app = gtk_application_new ("org.gtk.example", G_APPLICATION_FLAGS_NONE);
95 g_signal_connect (app, "activate", G_CALLBACK (activate), NULL);
96 status = g_application_run (G_APPLICATION (app), argc, argv);
97 g_object_unref (app);
98
99 return status;
100 }
101