fix missing content of theme manager

diff --git a/gtk2_ardour/theme_manager.cc b/gtk2_ardour/theme_manager.cc
index 4d7599bb78ed5dd538bdc210b00af42ddef7896d..1fc06bf0a862a854949c12f128ec1f097856d28a 100644 (file)
--- a/gtk2_ardour/theme_manager.cc
+++ b/gtk2_ardour/theme_manager.cc
@@ -95,6 +95,9 @@ ThemeManager::ThemeManager()
        vbox->pack_start (flat_buttons, PACK_SHRINK);
        vbox->pack_start (gradient_waveforms, PACK_SHRINK);
        vbox->pack_start (scroller);
+
+       vbox->show_all ();
+
        add (*vbox);
 
        color_display.signal_button_press_event().connect (sigc::mem_fun (*this, &ThemeManager::button_press_event), false);