add comparison operators for wxPen/BrushStyle and wxSOLID/... constants to avoid warnings in the existing code using such comparisons

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@52672 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/pen.h

@@ -132,5 +132,24 @@ public:
 
 extern WXDLLEXPORT_DATA(wxPenList*)   wxThePenList;
 
-#endif
-    // _WX_PEN_H_BASE_
+// provide comparison operators to allow code such as
+//
+//      if ( pen.GetStyle() == wxTRANSPARENT )
+//
+// to compile without warnings which it would otherwise provoke from some
+// compilers as it compares elements of different enums
+#if FUTURE_WXWIN_COMPATIBILITY_3_0
+
+inline bool operator==(wxPenStyle s, wxDeprecatedGUIConstants t)
+{
+    return wx_static_cast(int, s) == wx_static_cast(int, t);
+}
+
+inline bool operator!=(wxPenStyle s, wxDeprecatedGUIConstants t)
+{
+    return !(s == t);
+}
+
+#endif // FUTURE_WXWIN_COMPATIBILITY_3_0
+
+#endif // _WX_PEN_H_BASE_