#include "wx/dde.h" // for WX_DDE hack in wxExecute
#endif // wxUSE_IPC
-// implemented in utils.cpp
-extern "C" WXDLLIMPEXP_BASE HWND
-wxCreateHiddenWindow(LPCTSTR *pclassname, LPCTSTR classname, WNDPROC wndproc);
+#include "wx/msw/private/hiddenwin.h"
// ----------------------------------------------------------------------------
// constants