progressbar2.java

来自「SWTJFace篇项目源程序该项目包含 包含了Eclipse下构建swt的基本」· Java 代码 · 共 53 行

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.RowLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.ProgressBar;
import org.eclipse.swt.widgets.Shell;

public class ProgressBar2 {
	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 RowLayout());
		// 创建一个滑动条。这里用平滑型式样SWT.SMOOTH，默认是方格型
		final ProgressBar progressBar = new ProgressBar(shell, SWT.SMOOTH);
		progressBar.setMinimum(0); // 最小值
		progressBar.setMaximum(100);// 最大值
		// 创建一个GO按钮
		Button button = new Button(shell, SWT.NONE);
		button.setText("GO");
		button.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				new Thread() {
					public void run() {
						for (int i = 1; i < 11; i++) {// 每次循环进度条前进一格，同时停顿一秒
							final int i_copy = i; // 匿名内部类访问的局域变量必须是final型的，所以中转一下
							display.asyncExec(new Runnable() {
								public void run() {
									progressBar.setSelection(i_copy * 10);
								}
							});
							try {Thread.sleep(1000);} catch (Throwable e2) {} // 间隔一秒
						}
					}
				}.start();
			}
		});
		// -----------------END------------------------
		shell.layout();
		shell.open();
		while (!shell.isDisposed()) {
			if (!display.readAndDispatch())
				display.sleep();
		}
		display.dispose();
	}
}