Added SetOption,GetOption[Int] to wxSystemSettings. Made native MaskBlt optional.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@10563 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/settings.h

@@ -32,6 +32,16 @@ public:
 
     // Get a system metric, e.g. scrollbar size
     static int GetSystemMetric(int index);
+
+    // User-customizable hints to wxWindows or associated libraries
+    // These could also be used to influence GetSystem... calls, indeed
+    // to implement SetSystemColour/Font/Metric
+
+    static void SetOption(const wxString& name, const wxString& value);
+    static void SetOption(const wxString& name, int value);
+    static wxString GetOption(const wxString& name) ;
+    static int GetOptionInt(const wxString& name) ;
+    static bool HasOption(const wxString& name) ;
 };
 
 #endif