spin = GTK_SPIN_BUTTON(gtk_builder_get_object(builder, "framespin"));
play = GTK_TOGGLE_BUTTON(gtk_builder_get_object(builder, "playbutton"));
spin = GTK_SPIN_BUTTON(gtk_builder_get_object(builder, "framespin"));
play = GTK_TOGGLE_BUTTON(gtk_builder_get_object(builder, "playbutton"));