Le dimanche 21 juin 2009 14:20:17, David Nečas a écrit : > On Sun, Jun 21, 2009 at 02:13:52PM +0200, Julien Martin wrote: > > *static void hello(GtkWidget *widget, gpointer data) { > > gchar * _data = (gchar *) data;
There is no need to cast a gpointer. > > g_print(_data); Same as David, never put a variable for the format of printf like functions, always use %s e.g. fooprintf("%s", variable). Mike > > g_print("\n"); > > }* > > > > wich I call as follows: > > * > > g_signal_connect(G_OBJECT(button), "clicked", G_CALLBACK(hello), "hello > > toto");* > > > > I get the following warning each time I compile: > > > > *warning: the format is not a litteral string and no format argument* > > > > Can anyone please help? > > I need to "cast" the data variable to gchar *. What am I doing wrong? > > The problem is not in the typecasting. The problem is that if you do > (directly or indirectly) > > g_signal_connect(G_OBJECT(button), "clicked", G_CALLBACK(hello), "%s"); > > your program will crash. Print the message as > > g_print("%s\n", data); > > Yeti > > _______________________________________________ > gtk-list mailing list > gtk-list@gnome.org > http://mail.gnome.org/mailman/listinfo/gtk-list _______________________________________________ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list