Center components via alignment

[dsirijus]

Why wouldn't the following code

_vBox = new VBox(this);

_vBox.setSize(stage.stageWidth, stage.stageHeight);

_vBox.alignment = VBox.CENTER;

_hBox = new HBox(_vBox);

_hBox.setSize(stage.stageWidth, stage.stageHeight);

_hBox.alignment = HBox.MIDDLE;

_progressBar = new ProgressBar(_hBoy);

align the _progressBar to center stage?

[Keith Peters]

The width of a vbox is the widest child. Same with height of hbox. Setting it to the stage size has no effect.