#endif
#elif defined(__WXMOTIF__)
#include "wx/motif/slider.h"
-#elif defined(__WXGTK__)
+#elif defined(__WXGTK20__)
#include "wx/gtk/slider.h"
+#elif defined(__WXGTK__)
+ #include "wx/gtk1/slider.h"
#elif defined(__WXMAC__)
#include "wx/mac/slider.h"
#elif defined(__WXCOCOA__)