The expand event type (value is 17).
@see org.eclipse.swt.widgets.Widget#addListener @see org.eclipse.swt.widgets.Display#addFilter @see org.eclipse.swt.widgets.Event
@see org.eclipse.swt.widgets.Tree#addTreeListener @see org.eclipse.swt.events.TreeListener#treeExpanded @see org.eclipse.swt.events.TreeEvent
See Implementation
The expand event type (value is 17).
@see org.eclipse.swt.widgets.Widget#addListener @see org.eclipse.swt.widgets.Display#addFilter @see org.eclipse.swt.widgets.Event
@see org.eclipse.swt.widgets.Tree#addTreeListener @see org.eclipse.swt.events.TreeListener#treeExpanded @see org.eclipse.swt.events.TreeEvent