[gtkglarea] examples/zktor.c: Replace more deprecated api

[Javier Jardón <jjardon src gnome org>]

commit 7e7b41754c4fd7cc53da564d833aa1c52e0383dd
Author: Javier Jardón <jjardon gnome org>
Date:   Thu Mar 20 02:31:58 2014 +0000

    examples/zktor.c: Replace more deprecated api

 examples/zktor.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/examples/zktor.c b/examples/zktor.c
index 4430fff..e345c35 100644
--- a/examples/zktor.c
+++ b/examples/zktor.c
@@ -963,11 +963,11 @@ int main(int argc, char **argv)
   gtk_widget_show(window);
 
   /* set focus to glarea widget */
-  GTK_WIDGET_SET_FLAGS(glarea, GTK_CAN_FOCUS);
+  gtk_widget_set_can_focus (glarea, TRUE);
   gtk_widget_grab_focus(GTK_WIDGET(glarea));
 
   /* animating */
-  gtk_idle_add((GtkFunction)animate, glarea);
+  gtk_idle_add((GSourceFunc)animate, glarea);
 
   game_init();
   gtk_main();