How to switch between windows in GTK3 (C Language) - c

Question

I have an App which as some point Opens a new Window and works fine.
Then After I'm done with it, I need to switch back to the main window.
I understood that I need the function:
gtk_widget_hide();
but I cant figure out how to hide the main Window, to print only the second one and again after I click the button in the second window to go back to the first one.
This is what I have so far:
#include <stdio.h>
#include <gtk/gtk.h>
static void crete_new_wind (GtkWidget *widget);
gboolean destroy (GtkWidget *window);
int main (int argc, char *argv[]){
GtkWidget *window, *button, *box;
gtk_init (&argc, &argv);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (window), "First Window");
gtk_container_set_border_width (GTK_CONTAINER (window), 10);
gtk_widget_set_size_request (window, 300, 300);
gtk_window_set_position (GTK_WINDOW (window), GTK_WIN_POS_CENTER);
button = gtk_button_new_with_label ("Go to Window B");
g_signal_connect (G_OBJECT (button), "clicked", G_CALLBACK (crete_new_wind), (gpointer) window);
box = gtk_box_new (TRUE, 1);
gtk_box_pack_end (GTK_BOX (box), button, TRUE, TRUE, 1);
gtk_container_add (GTK_CONTAINER (window), box);
gtk_widget_show_all (window);
gtk_main ();
return 0;
}
void crete_new_wind (GtkWidget *widget){
GtkWidget *window, *button, *box;
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (window), "Second Window");
gtk_container_set_border_width (GTK_CONTAINER (window), 10);
gtk_widget_set_size_request (window, 300, 300);
gtk_window_set_position (GTK_WINDOW (window), GTK_WIN_POS_CENTER);;
g_signal_connect (G_OBJECT (window), "destroy", G_CALLBACK (destroy), widget);
button = gtk_button_new_with_label ("Go back to Window A");
g_signal_connect (G_OBJECT (button), "destroy", G_CALLBACK (destroy), NULL);
gtk_widget_hide(widget);
box = gtk_box_new (TRUE, 1);
gtk_box_pack_end (GTK_BOX (box), button, TRUE, TRUE, 1);
gtk_container_add (GTK_CONTAINER (window), box);
gtk_widget_show_all (window);
}
gboolean destroy (GtkWidget *widget){
gtk_widget_destroy (widget);
return TRUE;
}
If I click on the button(Go to Window B) I have this:
But the main window is still there, avaible to the user which is not what I need.

Answer 1

Thats because the clicked callback wants two parameters
Change the prototype and the function to
static void crete_new_wind(GtkButton *dummy, gpointer widget);
static void crete_new_wind(GtkButton *dummy, gpointer widget) {
in order to use the second parameter in your function.