+ flag to it to revert to the old behaviour. It is also possible to use the
+ wxAutomationInstance_SilentIfNone flag to prevent the error message if no
+ currently running instances of this object are available.
+
+- Signatures of wxDataViewCustomRenderer::Activate(), LeftClick() and
+ StartDrag() virtual methods changed. You will need to change them in your
+ derived renderer class too if you override them.