Mouse over event on grid grouping header

Question

I am trying to add button to a grid grouping header, and show the button when mouse over.How can I listen to the mouse over event on the a grid grouping header in extjs grid panel.

Answer 1

Here you will find a way to achieve what you are looking for:

How to create a ExtJS 4 mouseenter / mouseleave state for (grid.feature.Grouping)?

In a response, you get a way to add delegation listeners to the mouseover / mouseout events.