Use defs.h (and automatically setup.h and chkconf.h) before first wxUSE_* check (bug #1164141).

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@32852 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/popupwin.h

@@ -16,9 +16,12 @@
     #pragma interface "popupwinbase.h"
 #endif
 
-#include "wx/window.h"
+#include "wx/defs.h"
 
 #if wxUSE_POPUPWIN
+
+#include "wx/window.h"
+
 // ----------------------------------------------------------------------------
 // wxPopupWindow: a special kind of top level window used for popup menus,
 // combobox popups and such.
@@ -106,7 +109,7 @@ public:
 
     // Overridden to grab the input on some plaforms
     virtual bool Show( bool show = true );
-    
+
 protected:
     // common part of all ctors
     void Init();