X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fengineer%2Ftrainpanel.h;h=7b929856b840e6ff04e6eede5d338986f91f0332;hb=bc8ac89bbe774bb133b758416182aa18e5e0a5a5;hp=a76d907a1af33bcb994e365dafbc8a6e8e411b14;hpb=2fe7cbcb761487bc7409b93b372da6f8ab3c581e;p=r2c2.git

diff --git a/source/engineer/trainpanel.h b/source/engineer/trainpanel.h
index a76d907..7b92985 100644
--- a/source/engineer/trainpanel.h
+++ b/source/engineer/trainpanel.h
@@ -8,6 +8,7 @@ Distributed under the GPL
 #ifndef TRAINPANEL_H_
 #define TRAINPANEL_H_
 
+#include <sigc++/trackable.h>
 #include <msp/gltk/hslider.h>
 #include <msp/gltk/label.h>
 #include <msp/gltk/panel.h>
@@ -17,7 +18,7 @@ Distributed under the GPL
 
 class Engineer;
 
-class TrainPanel: public Msp::GLtk::Panel
+class TrainPanel: public Msp::GLtk::Panel, public sigc::trackable
 {
 private:
 	Engineer &engineer;