Description Billy Biggs 2005-02-16 16:49:18 EST

Run the following code.  On Linux, you can hit Ctrl-F to bring up a typeahead
dialog to search the list.  If you type an invalid name, the selection can go
blank, at which point the list receives a selection event with the selected
index being -1.  This case cannot occur on Win32: once the list has a selection,
it cannot lose it.

public static void main(String [] args) {
  Display display = new Display();
  Shell shell = new Shell(display);
  shell.setLayout(new FillLayout());
  final List list = new List(shell, SWT.SINGLE);
  for(int i = 0; i < 10; i++) {
    list.add("This is item " + i);
  }
  list.addSelectionListener(new SelectionListener() {
    public void widgetDefaultSelected(SelectionEvent e) {}
    public void widgetSelected(SelectionEvent e) {
      System.out.println("Selection event");
      System.out.println("The selected item is: "
                         + list.getSelectionIndex());
    }
  });
  shell.setSize(200,200);
  shell.open();
  while(!shell.isDisposed()) {
    if(!display.readAndDispatch()) display.sleep();
  }
  display.dispose();
}