Inherit from non Component class

[ultra2]

I need to inherit from a non-Component class, in my case from TreeStore.
I would like to handle events. No initComponent method to override, so that I suppose I need to
override the constructor to wire up my event handlers.

Can you give me a short sample? Is there any method I must call?
Is this the right way?

constructor: function(config) {
  var me = this;
  me.callParent(arguments);
  me.on('move', this.MyMoveHandler);
}

[skirtle]

The overall approach of overriding the constructor is fine. Generally in such circumstances I'd have a read of the superclass's source code to look for a better method to override but from a quick look I don't see a better one for what you're trying to do.

[ultra2]

thanks!