【Java开源代码栏目提醒】:网学会员为广大网友收集整理了,Tree1.java,希望对大家有所帮助!
package cn.com.chengang.swt;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeItem;
public class Tree1 {
public static void main(String[] args) {
final Display display = Display.getDefault();
final Shell shell = new Shell();
shell.setSize(327, 253);
// ---------创建窗口中的其他界面组件-------------
shell.setLayout(new FillLayout());
// 创建一个Tree对象。SWT.SINGLE单选,SWT.MULTI则可多选
final Tree tree = new Tree(shell, SWT.SINGLE);
TreeItem chinaItem = new TreeItem(tree, SWT.NONE);
chinaItem.setText("中国");
new TreeItem(chinaItem, SWT.NULL).setText("北京");
new TreeItem(chinaItem, SWT.NULL).setText("台湾");
new TreeItem(chinaItem, SWT.NULL).setText("桂林");
new TreeItem(tree, SWT.NONE).setText("美国");
// 当单击Tree的结点时,结点文字显示于窗口标题栏中
tree.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
// 因Tree可支持多选,所以getSelection方法返回的是一个数组
// 但本例Tree为单选,所以数组只有一个元素
TreeItem[] items = tree.getSelection();
shell.setText(items[0].getText());
}
});
// -----------------END------------------------
shell.layout();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}