Get text from Textbox in GTK+ - c++

Question

I'm trying to get the input text from a text box in a callback function when the user changes something it it (on "changed").
The code goes as follow:
#include <stdio.h>
#include <gtk/gtk.h>
void enter_callback( GtkWidget *widget, GtkEditable *buffer)
{
printf("%s",gtk_editable_get_chars(buffer, 0, -1));
}
int main(int argc, char *argv[])
{
GtkWidget *window;
GtkWidget *text;
GtkWidget *table;
gtk_init (&argc, &argv);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
table = gtk_table_new (2, 2, TRUE);
gtk_container_add (GTK_CONTAINER (window), table);
text=gtk_text_new(NULL, NULL);
gtk_text_set_editable(text, TRUE);
gtk_signal_connect(GTK_OBJECT(text), "changed", GTK_SIGNAL_FUNC(enter_callback), (GtkEditable*)text);
gtk_table_attach_defaults(GTK_TABLE(table), text, 0, 1, 0, 1);
gtk_container_border_width (GTK_CONTAINER (window), 40);
gtk_window_set_default_size (GTK_WINDOW(window), 640, 200);
gtk_widget_show(text);
gtk_widget_show(window);
gtk_widget_show(table);
gtk_main();
return 0;
}
The code compiles just right, I'm compiling it on Code::Blocks on debug, checking output on the console by printf. The problem is I get <NULL> as a callback everytime I change something on the textbox. How can I get the correct output?
SOLUTION:
As noted by Washu, gtk_text is deprecated and gtk_text_view should be used instead.

Answer 1

According to the GTK documentation, GtkText is deprecated, buggy, and should not be used. You should instead be using the GtkTextView widget via gtk_text_view_new.

Answer 2

You can use GtkEntry widget too. And use gtk_entry_get_text () (which return const gchar * value) that to get text from GtkEntry, for instance.