On Sun, Jun 21, 2009 at 02:13:52PM +0200, Julien Martin wrote:
> *static void hello(GtkWidget *widget, gpointer data) {
> gchar * _data = (gchar *) data;
> g_print(_data);
> 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
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