-WXDLLEXPORT void StringToFloat(const wxChar *s, float *number);
-WXDLLEXPORT wxChar* FloatToString(float number, const wxChar *fmt = wxFloatToStringStr);
-WXDLLEXPORT void StringToDouble(const wxChar *s, double *number);
-WXDLLEXPORT wxChar* DoubleToString(double number, const wxChar *fmt = wxDoubleToStringStr);
-WXDLLEXPORT void StringToInt(const wxChar *s, int *number);
-WXDLLEXPORT void StringToLong(const wxChar *s, long *number);
-WXDLLEXPORT wxChar* IntToString(int number);
-WXDLLEXPORT wxChar* LongToString(long number);
+WXDLLIMPEXP_DATA_BASE(extern const wxChar*) wxFloatToStringStr;
+WXDLLIMPEXP_DATA_BASE(extern const wxChar*) wxDoubleToStringStr;
+
+WXDLLIMPEXP_BASE void StringToFloat(const wxChar *s, float *number);
+WXDLLIMPEXP_BASE wxChar* FloatToString(float number, const wxChar *fmt = wxFloatToStringStr);
+WXDLLIMPEXP_BASE void StringToDouble(const wxChar *s, double *number);
+WXDLLIMPEXP_BASE wxChar* DoubleToString(double number, const wxChar *fmt = wxDoubleToStringStr);
+WXDLLIMPEXP_BASE void StringToInt(const wxChar *s, int *number);
+WXDLLIMPEXP_BASE void StringToLong(const wxChar *s, long *number);
+WXDLLIMPEXP_BASE wxChar* IntToString(int number);
+WXDLLIMPEXP_BASE wxChar* LongToString(long number);
+
+#endif // WXWIN_COMPATIBILITY_2_4