title: How to add a hover effect to a GtkTreeView cell
body: <p>I have a <code>GtkTreeView</code> with two columns of type text (e.g. <code>G_TYPE_STRING</code>) and I am using <code>GtkCellRendererText</code> to render the column.</p>
  
  <p>Is there any why that I can react when the mouse enters and leaves a certain cell and then hover or highlight the cell.</p>
  
  <p>For example I would like to underline the text in the cell renderer, when the mouse enters it, in order to give a visual clue that the cell can be clicked to perform an action.</p>