How to invoke callback on ListGrid on success and errors from server

[gauravd]

I am using PHP server with SmartClient. PHP server responds the JSON data to SC request. We want whenever server response is received for ListGrid operation request (any operation), my callback function should be invoked.

This is simple in case of DynamicForm, but we are not able to invoke callback in case of ListGrid as ListGrid operation is done automatically on submit or load event. We do not invoke fetchData(), addData() and friend functions on listgrid.

Gaurav