Eclipse Tutorial

StakLayout Tutorial

StackLayout是一个特殊的Layout，容器中所有的控件的位置和大小都是一致的，而且当前只能显示一个控件。要显示的控件用topControl来改变。

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setLayout(new GridLayout());

    final Composite parent = new Composite(shell, SWT.NONE);
    parent.setLayoutData(new GridData(GridData.FILL_BOTH));
    final StackLayout layout = new StackLayout();
    parent.setLayout(layout);
    final Button[] bArray = new Button[10];
    for (int i = 0; i < 10; i++) {
        bArray[i] = new Button(parent, SWT.PUSH);
        bArray[i].setText("Button "+i);
    }
    layout.topControl = bArray[0];

    Button b = new Button(shell, SWT.PUSH);
    b.setText("Show Next Button");
    final int[] index = new int[1];
    b.addListener(SWT.Selection, new Listener(){
        public void handleEvent(Event e) {
            index[0] = (index[0] + 1) % 10;
            layout.topControl = bArray[index[0]];
            parent.layout();
        }
    });

    shell.open();
    while (shell != null && !shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep(); 
    }   
}

参考资料

1. StackLayout snippets
2. SWT Example: LayoutExample

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