use forward declaration...

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@21454 a592a061-630c-0410-9148-cb99ea01b6c8

diff --git a/src/frontends/qt4/qt_helpers.h b/src/frontends/qt4/qt_helpers.h
index fd292c2e39ccf9df6d3bd62a104d69da14301ece..9cb868d4710d58487c972c0e8a58ad9e519d2d41 100644 (file)
--- a/src/frontends/qt4/qt_helpers.h
+++ b/src/frontends/qt4/qt_helpers.h
@@ -15,8 +15,7 @@
 
 #include "Length.h"
 #include "support/qstring_helpers.h"
-
-#include <string>
+#include "support/strfwd.h"
 
 class QComboBox;
 class QLineEdit;