title: How to post a UserEvent right after a self-defined mesh component is selected in Maya
body: <p>Here's a Maya self-defined shape and I wanna do some thing right after the component of the shape is selected.</p>
  
  <p>I registered a UserEvent and post it in the select function of shapeUI class, after the selectInfo.AddSelection call.</p>
  
  <p>But the result is before I actually select the component of the shape, when I'm just hovering my mouse on the shape, the event was posted.</p>
  
  <p>Any ideas where to put the postEvent call to make the event posted right after the actual selection is made?</p>
  
  <p>Thanks.</p>