Re: http://www.gtk.org/tutorial/sec-anupgradedhelloworld.html

[Hubert Sokołowski <h sokolowski wsisiz edu pl>]

On Thu, 17 Feb 2005 13:05:43 +0100
Gert Cuykens <gert cuykens gmail com> wrote:

> static void callback( GtkWidget *widget, gpointer   data ){
>     g_print ("Hello again - %s was pressed\n", (gchar *) data);
> }
>
> why do they put () around gchar ?
> why can it not be gchar *data ?
>
> What does %s do ?
> Are gpointer and gchar global variables of gtk ?
> Are gpointer and gchar data types or objects ?
> What does gpointer and gchar represent ?
You should learn some more about programming in C before you start
writing GTK apps.

hs