added missing header for not PCH case

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15433 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/msw/popupwin.cpp b/src/msw/popupwin.cpp
index 15e5b9ac5d5ed6db71411b87be5480deca16db7b..ab655565667aebeec8979f59cff35299ef92429b 100644 (file)
--- a/src/msw/popupwin.cpp
+++ b/src/msw/popupwin.cpp
@@ -33,6 +33,8 @@
 
 #include "wx/popupwin.h"
 
+#include "wx/msw/private.h"     // for WS_CHILD and WS_POPUP
+
 // ============================================================================
 // implementation
 // ============================================================================