GTK+ Forums

#include <stdlib.h>
#include <gtk/gtk.h>

static void begin_mode (GtkWidget *widget, gpointer data)
{
  start_child_1 ();
  return 0;
}

start_child_1 ()
{
  GtkWidget *window = NULL;
  GtkWidget *vbox = NULL;

  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  gtk_widget_set_size_request (window, 400, 450);
  gtk_window_set_title (GTK_WINDOW (window), "Child_1");
  gtk_window_set_position (GTK_WINDOW (window), GTK_WIN_POS_CENTER);
  gtk_window_set_resizable (GTK_WINDOW (window), FALSE);
  gtk_widget_realize (window);
  g_signal_connect (window, "destroy", gtk_main_quit, NULL);
  gtk_widget_show (window);

  return 0;
}

int main (int argc, char *argv[])
{
  GtkWidget *button = NULL;
  GtkWidget *window = NULL;
  GtkWidget *vbox = NULL;
  GtkWidget *alignment = NULL;

   /*Initialize GTK+ */
  g_log_set_handler ("Gtk", G_LOG_LEVEL_WARNING, (GLogFunc) gtk_false, NULL);
  gtk_init (&argc, &argv);
  g_log_set_handler ("Gtk", G_LOG_LEVEL_WARNING, g_log_default_handler, NULL);

  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  gtk_widget_set_size_request (window, 400, 450);
  gtk_window_set_title (GTK_WINDOW (window), "Parent");
  gtk_window_set_position (GTK_WINDOW (window), GTK_WIN_POS_CENTER);
  gtk_window_set_resizable (GTK_WINDOW (window), FALSE);
  gtk_widget_realize (window);
  g_signal_connect (window, "destroy", gtk_main_quit, NULL);

  /*Create a main vertical box */
  vbox = gtk_vbox_new (TRUE, 0);
  gtk_container_add (GTK_CONTAINER (window), vbox);

  /*Creates "Next" button and connects it with select function*/

  alignment = gtk_alignment_new (0.9, 0.35, 0.11, 0.15);
  gtk_box_pack_start (GTK_BOX (vbox), alignment, TRUE, TRUE, 0);//!
  gtk_widget_show (alignment);

  button = gtk_button_new_with_label ("Next");
  g_signal_connect (button, "clicked", G_CALLBACK (begin_mode), NULL);
  gtk_container_add (GTK_CONTAINER (alignment), button);
  gtk_widget_show (button);

  gtk_widget_show (vbox);
  gtk_widget_show (window);

  /* Enter the main loop */
  gtk_main ();
  return 0;
}

//I used second callback function which is launched before child window function.
static void main_close ( GtkWidget *widget,
                     gpointer   window )
{
    gtk_widget_hide (window);
}

//these strings is written after button declaration which launches child window
g_signal_connect (button, "clicked", G_CALLBACK (main_close), window);
g_signal_connect (button, "clicked", G_CALLBACK (begin_mode), NULL);