Eclipse插件开发：SWT之TextExample

该例子演示了SWT界面下的Text（文本域）构建及监听，限制了只能输入数字字符。

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.VerifyEvent;
import org.eclipse.swt.events.VerifyListener;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
public class TextExample {
public static void main(String[] args) {
	Display display = new Display();
	Shell shell = new Shell(display);
	shell.setText("Text Example");
	shell.setBounds(100, 100, 200, 100);
	shell.setLayout(new FillLayout());
	final Text text = new Text(shell, SWT.MULTI);
	text.addVerifyListener(new VerifyListener() {
		public void verifyText(VerifyEvent event) {
			event.doit = event.text.length() == 0
					|| Character.isDigit(event.text.charAt(0));
		}
	});
	shell.open();
	while (!shell.isDisposed()) {
		if (!display.readAndDispatch())
			display.sleep();
	}
	display.dispose();
}

}

效果如下：