first compilable version of tabbable design.

I would have loved to split this apart, but there are just so many interrelated changes,
it makes little sense and would be a huge effort that would break future git bisect
use because so many intermediate commits would not compile

1 files changed, 3 insertions, 1 deletions

diff --git a/gtk2_ardour/rc_option_editor.h b/gtk2_ardour/rc_option_editor.h
index 1b543e3aaf..a74df7cfde 100644
--- a/gtk2_ardour/rc_option_editor.h
+++ b/gtk2_ardour/rc_option_editor.h
@@ -20,6 +20,8 @@
 #ifndef __gtk_ardour_rc_option_editor_h__
 #define __gtk_ardour_rc_option_editor_h__
 
+#include "gtkmm2ext/tabbable.h"
+
 #include "option_editor.h"
 #include "visibility_group.h"
 
@@ -32,7 +34,7 @@
  */
 
 /** Editor for options which are obtained from and written back to one of the .rc files. */
-class RCOptionEditor : public OptionEditor
+class RCOptionEditor : public OptionEditor, public Gtkmm2ext::Tabbable
 {
 public:
 	RCOptionEditor ();