[GTK+ 3][C] label centré + bouton qui s'affiche pas

#include <gtk/gtk.h> static void hello(GtkWidget *widget, gpointer data); static gboolean delete_event(GtkWidget *widget, GdkEvent *event, gpointer data); static void destroy(GtkWidget *widget, gpointer data); int main(int argc, char *argv[]) { GtkWidget *maFenetre; GtkWidget *monBouton; GtkWidget *monLabel; gtk_init (&argc, &argv); maFenetre = gtk_window_new(GTK_WINDOW_TOPLEVEL); gtk_window_set_title(GTK_WINDOW(maFenetre), "ma fenêtre"); gtk_window_set_default_size(GTK_WINDOW(maFenetre), 300, 300); g_signal_connect(maFenetre, "delete-event", G_CALLBACK(delete_event), NULL); g_signal_connect(maFenetre, "destroy", G_CALLBACK(destroy), NULL); monBouton = gtk_button_new_with_label("fermer"); g_signal_connect(monBouton, "clicked", G_CALLBACK(hello), NULL); g_signal_connect_swapped(monBouton, "clicked", G_CALLBACK(gtk_widget_destroy), maFenetre); monLabel=gtk_label_new("Salut à tous.\nMerci pour votre aide."); gtk_label_set_justify(GTK_LABEL(monLabel), GTK_JUSTIFY_LEFT); gtk_container_add(GTK_CONTAINER(maFenetre), monLabel); gtk_container_add(GTK_CONTAINER(maFenetre), monBouton); gtk_widget_show(monLabel); gtk_widget_show(monBouton); gtk_widget_show(maFenetre); gtk_main (); return 0; } static void hello(GtkWidget *widget, gpointer data){g_print("boutton\n");} static gboolean delete_event(GtkWidget *widget, GdkEvent *event, gpointer data){g_print ("fermeture\n"); return FALSE;} static void destroy(GtkWidget *widget, gpointer data){gtk_main_quit();}

J'ai trouvé. (j'aurais du lire l'avertissement dans la console)
Faut ajouter les contenus label et button dans un box et ajouter le box dans la fenêtre et ça marche.

Voici le code résolu:

Code:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
#include <gtk/gtk.h>
 
static void hello(GtkWidget *widget, gpointer data);
static gboolean delete_event(GtkWidget *widget, GdkEvent *event, gpointer data);
static void destroy(GtkWidget *widget, gpointer data);
 
int main(int argc, char *argv[])
{
    GtkWidget *maFenetre;
    GtkWidget *maBox;
    GtkWidget *monBoutton;
    GtkWidget *monLabel;
 
    gtk_init (&argc, &argv);
 
    maFenetre = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    gtk_window_set_title(GTK_WINDOW(maFenetre), "ma fenêtre");
    gtk_window_set_default_size(GTK_WINDOW(maFenetre), 300, 300);
    g_signal_connect(maFenetre, "delete-event", G_CALLBACK(delete_event), NULL);
    g_signal_connect(maFenetre, "destroy", G_CALLBACK(destroy), NULL);
 
 
    monBoutton = gtk_button_new_with_label("fermer");
    g_signal_connect(monBoutton, "clicked", G_CALLBACK(hello), NULL);
    g_signal_connect_swapped(monBoutton, "clicked", G_CALLBACK(gtk_widget_destroy), maFenetre);
 
 
    monLabel=gtk_label_new("Salut à tous.\nMerci pour votre aide.");
    gtk_label_set_justify(GTK_LABEL(monLabel), GTK_JUSTIFY_LEFT);
 
 
    maBox = gtk_box_new(0,0);
 
 
    gtk_container_add(GTK_CONTAINER(maBox), monLabel);
    gtk_container_add(GTK_CONTAINER(maBox), monBoutton);
    gtk_container_add(GTK_CONTAINER(maFenetre),maBox);
 
 
    gtk_widget_show(maBox);
    gtk_widget_show(monLabel);
    gtk_widget_show(monBoutton);
    gtk_widget_show(maFenetre);
 
    gtk_main ();
 
    return 0;
}
 
 
static void hello(GtkWidget *widget, gpointer data)
{
	g_print("boutton\n");
}
 
static gboolean delete_event(GtkWidget *widget, GdkEvent *event, gpointer data)
{
	g_print ("fermeture\n");
return FALSE;
}
 
static void destroy(GtkWidget *widget, gpointer data)
{
	gtk_main_quit();
}