title: How to trigger the edit mode of an item in a QTableView?
body: <p>I'm using QTableView and QStandardItemModel now.</p>
  
  <p>In the QTableView, if you double-click a cell, this cell will get into edit mode and you can edit its content.</p>
  
  <p>Now I have a problem, I want to trigger the edit mode of an item by code (by command), what should I do? I cannot find proper function or slot in QTableView or QStandardItemModel. Do I need to emit any signal to get into edit mode? </p>
  
  <p>And which signal I should catch if I want to know when the editing is finish (user press "Enter" or click another items to leave the edit mode)??</p>
  
  <p>Thanks for your help</p>