Changes suggested from jberitz

src/basic-gtk/basic.c

@@ -13,7 +13,8 @@ gint main ( gint argc, gchar* argv[] )
 
     GtkWidget *window = gtk_window_new( GTK_WINDOW_TOPLEVEL );
     gtk_window_set_title( GTK_WINDOW(window), "First GTK+ Program" );
-    g_object_set( window, "window-position", GTK_WIN_POS_CENTER, "border-width", 10, NULL );
+    gtk_window_set_position( GTK_WINDOW(window), GTK_WIN_POS_CENTER );
+    gtk_container_set_border_width( GTK_CONTAINER(window), 10 );
     gtk_window_set_default_size( GTK_WINDOW(window), 350, 70 );
     g_signal_connect ( GTK_WIDGET(window), "destroy", G_CALLBACK(gtk_main_quit), NULL);
 

src/basic-gtk/sync_window.c

@@ -17,7 +17,7 @@ void
 spin_value_changed(GtkSpinButton *spinbutton, gpointer user_data) {
     GtkScale *scale = (GtkScale*)user_data;
     gdouble value;
-    g_object_get(spinbutton, "value", &value, NULL);
+    value = gtk_spin_button_get_value(spinbutton);
     gtk_range_set_value(GTK_RANGE(scale), value);
 }
 
@@ -32,17 +32,33 @@ void
 gu_syncwindow_init(GuSyncwindow *window) {
     gtk_window_set_default_size(GTK_WINDOW(window), 300, 20);
     gtk_window_set_title(GTK_WINDOW(window), "Enter your Age");
-    g_object_set( window, "window-position", GTK_WIN_POS_CENTER, "border-width", 10, NULL );
+    gtk_window_set_position (GTK_WINDOW(window), GTK_WIN_POS_CENTER);
+    gtk_container_set_border_width( GTK_CONTAINER(window), 10);
     g_signal_connect(GTK_WIDGET(window), "destroy", G_CALLBACK(gtk_main_quit), NULL);
 
     /* Widgets */
     GtkWidget *spin = gtk_spin_button_new_with_range(0, 130, 1);
     GtkWidget *scale = gtk_scale_new_with_range(GTK_ORIENTATION_HORIZONTAL, 0, 130, 1);
 
+    /* According to http://developer.gnome.org/gtk3/stable/GtkVBox.html#gtk-vbox-new
+     * GtkBox is going away eventually in the future
+     *
+     * Using GtkGrid instead
+     */
+
+    /*
     GtkWidget *box = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 5);
     gtk_box_set_homogeneous(GTK_BOX(box), TRUE);
     gtk_box_pack_start(GTK_BOX(box), spin, TRUE, TRUE, 0);
     gtk_box_pack_start(GTK_BOX(box), scale, TRUE, TRUE, 0);
+    */
+
+    GtkWidget *box = gtk_grid_new();
+    gtk_grid_set_column_homogeneous(GTK_GRID(box), TRUE);
+    gtk_grid_set_column_spacing(GTK_GRID(box), 5);
+    gtk_grid_attach_next_to(GTK_GRID(box), scale, NULL, GTK_POS_LEFT, 1,1);
+    gtk_grid_attach_next_to(GTK_GRID(box), spin, NULL, GTK_POS_LEFT, 1,1);
+
     g_signal_connect(spin, "value-changed", G_CALLBACK(spin_value_changed), scale);
     g_signal_connect(scale, "value-changed", G_CALLBACK(scale_value_changed), spin);
 

src/basic-gtk/text_window.c

@@ -56,7 +56,7 @@ gu_textwindow_init(GuTextwindow *window) {
 
     gtk_window_set_default_size(GTK_WINDOW(window), 400, 300);
     gtk_window_set_title(GTK_WINDOW(window), "Text File Viewer");
-    g_object_set( window, "window-position", GTK_WIN_POS_CENTER, NULL );
+    gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
     g_signal_connect(GTK_WIDGET(window), "destroy", G_CALLBACK(gtk_main_quit), NULL);
 
     /* Toolbar */