fixed wxProgressDialog for ranges > 65535

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@13159 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/generic/progdlgg.h

@@ -112,6 +112,12 @@ private:
    // the maximum value
    int m_maximum;
 
+#ifdef __WXMSW__
+   // the factor we use to always keep the value in 16 bit range as the native
+   // control only supports ranges from 0 to 65,535
+   size_t m_factor;
+#endif // __WXMSW__
+
    // for wxPD_APP_MODAL case
    class WXDLLEXPORT wxWindowDisabler *m_winDisabler;