SWT 树的事件 SWT.Selection SWT.CHECK SWT.DefaultSelection

原程序：Snippet114

 

1，Tree支持 SWT.CHECK 类型的树。

2，单击复选框或Item产生SWT.Selection事件，如果单击的是复选框，event.detail = SWT.CHECK。

3，双击Item产生SWT.DefaultSelection

 

public class Snippet114 {
	public static void main (String [] args) {
		Display display = new Display ();
		Shell shell = new Shell (display);
		shell.setLayout(new FillLayout());
		Tree tree = new Tree (shell, SWT.CHECK | SWT.BORDER);
		for (int i=0; i<12; i++) {
			TreeItem item = new TreeItem (tree, SWT.NONE);
			item.setText ("Item " + i);
		}
		tree.addListener(SWT.Selection, new Listener() {
			public void handleEvent(Event event) {
				String string = event.detail == SWT.CHECK ? "Checked" : "Selected";
				System.out.println (event.item + " " + string);
			}
		});
		tree.addListener(SWT.DefaultSelection, new Listener() {
			public void handleEvent(Event event) {
				System.out.println ("DefaultSelection");
			}
		});
		shell.setSize (200, 200);
		shell.open ();
		while (!shell.isDisposed()) {
			if (!display.readAndDispatch ()) display.sleep ();
		}
		display.dispose ();
	}
}

 

 

 

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1 楼 zxjlwt 2016-02-17  

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