include wx/artprov.h to define wxArtID used in this header

[wxWidgets.git] / include / wx / generic / busyinfo.h

diff --git a/include/wx/generic/busyinfo.h b/include/wx/generic/busyinfo.h
index 0151a76b3bf860a39bc4002a38b80ae6ec713a16..feaa431831b25d6db3341b696522da064317db28 100644 (file)
--- a/include/wx/generic/busyinfo.h
+++ b/include/wx/generic/busyinfo.h
@@ -14,7 +14,8 @@
 
 #if wxUSE_BUSYINFO
 
-class WXDLLIMPEXP_CORE wxFrame;
+class WXDLLIMPEXP_FWD_CORE wxFrame;
+class WXDLLIMPEXP_FWD_CORE wxWindow;
 
 //--------------------------------------------------------------------------------
 // wxBusyInfo