#if wxUSE_CLIPBOARD
-class wxDataObject;
+class WXDLLIMPEXP_CORE wxDataObject;
struct wxDataIdToDataObject;
#include "wx/list.h"
// wxClipboard
//-----------------------------------------------------------------------------
-class wxClipboard : public wxClipboardBase
+class WXDLLIMPEXP_CORE wxClipboard : public wxClipboardBase
{
public:
wxClipboard();