title: Menuhandler for REALbasic ListBox.ActiveCell
body: <p>I have a Listbox where all cells are editable.</p>
  
  <p>While the user is typing text in the ActiveCell (Textfield) she may decide to paste text.</p>
  
  <p>I would like to examine the paste-text and perform different paste operations depending on whether it is multiline or not.</p>
  
  <p>Is there any way to create an EditPaste MenuHandler specifically for ListBox1.ActiveCell?</p>