Further cleaning of the wxPalmOS radiobox code. Sending update event from slider. New styles for wxRadioBox and wxRadioButton for using alternative appearance of the control.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@31690 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/palmos/slider.h

@@ -70,6 +70,9 @@ public:
     // implementation
     void Command(wxCommandEvent& event);
 
+    // send a notification event, return true if processed
+    bool SendUpdatedEvent();
+
 protected:
     virtual wxSize DoGetBestSize() const;