Aligning buttons in a Scala MainFrame using setAlignmentX - scala-swing

Question

I'm having trouble getting the buttons on a simple Scala MainFrame GUI to align at center.
Have tried many combos of buttonname.peer.setAlignmentX and Y with no effect.
The code is listed below:
object CGui extends SimpleSwingApplication
{
def top = new MainFrame
{
title = "Client Dashboard"
var tbox = new TextArea(4,20) { text = "Welcome to the dashboard"}
val stats_button = new Button { text = " View Statistics " }
val sp_button = new Button { text = " Add Server Process " }
val cp_button = new Button { text = " Add Local Process " }
val conn_button = new Button { text = " Connect" }
val quit_button = new Button { text = " Quit" }
// GUI Components *************************************************End *****
// GUI SetUp ******************************************************Start *****
contents = new BoxPanel(Orientation.Vertical)
{
contents += new Label(" ")
contents += tbox
contents += new Label(" ")
contents += stats_button
contents += new Label(" ")
contents += sp_button
contents += new Label(" ")
contents += cp_button
contents += new Label(" ")
contents += new FlowPanel {
contents += new Label(" ")
contents += conn_button
contents += quit_button }
border = Swing.EmptyBorder(20, 20, 20, 20)
}
listenTo(sp_button, cp_button, stats_button, conn_button, quit_button)
// GUI SetUp ******************************************************End *****
Can anyone point me to any descriptions of setAlignmentX,Y usage.
Would ScalaDoc have examples of usage ?

Answer 1

After investigating the post Scala Swing Component alignment, I was able to use BorderPanel { }
to position the buttons as in the code below:
// GUI SetUp ******************************************************Start *****
contents = new BoxPanel(Orientation.Vertical)
{
contents += new Label(" ")
contents += tbox
contents += new Label(" ")
contents += new BorderPanel {
add(stats_button, BorderPanel.Position.Center)}
contents += new Label(" ")
contents += new BorderPanel {
add(sp_button, BorderPanel.Position.Center)}
contents += new Label(" ")
contents += new BorderPanel {
add(cp_button, BorderPanel.Position.Center)}
contents += new Label(" ")
contents += new FlowPanel
{
contents += new BorderPanel {
add(conn_button, BorderPanel.Position.West)
add(quit_button, BorderPanel.Position.Center) }
}
border = Swing.EmptyBorder(20, 20, 20, 20)
}
listenTo(sp_button, cp_button, stats_button, conn_button, quit_button)
// GUI SetUp ******************************************************End *****
Should have looked at it before posting mine.