Allow wxPGProperty::IsChildSelected() to work recursively

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67768 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/propgrid/property.h

@@ -2390,7 +2390,7 @@ protected:
     /**
         Returns true if child property is selected.
     */
-    bool IsChildSelected() const;
+    bool IsChildSelected( bool recursive = false ) const;
 
     // Removes child property with given pointer. Does not delete it.
     void RemoveChild( wxPGProperty* p );