Fixed a bug: Disabling a property didn't work properly if a child item was selected.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67719 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/propgrid/property.h

@@ -2387,6 +2387,11 @@ protected:
     void InitAfterAdded( wxPropertyGridPageState* pageState,
                          wxPropertyGrid* propgrid );
 
+    /**
+        Returns true if child property is selected.
+    */
+    bool IsChildSelected() const;
+
     // Removes child property with given pointer. Does not delete it.
     void RemoveChild( wxPGProperty* p );