#if wxUSE_CONSTRAINTS
 
+#include "wx/layout.h"
+
 #ifndef WX_PRECOMP
     #include "wx/window.h"
     #include "wx/utils.h"
     #include "wx/intl.h"
 #endif
 
-#include "wx/layout.h"
-
 
 IMPLEMENT_DYNAMIC_CLASS(wxIndividualLayoutConstraint, wxObject)
 IMPLEMENT_DYNAMIC_CLASS(wxLayoutConstraints, wxObject)
     percent = 0;
     otherEdge = wxTop;
     done = false;
-    otherWin = (wxWindowBase *) NULL;
+    otherWin = NULL;
 }
 
 void wxIndividualLayoutConstraint::Set(wxRelationship rel, wxWindowBase *otherW, wxEdge otherE, int val, int marg)
         value = 0;
         percent = 0;
         otherEdge = wxTop;
-        otherWin = (wxWindowBase *) NULL;
+        otherWin = NULL;
         return true;
     }