apptest.java

java 与COM组件的连接桥

package com.jacob.samples.applet;

import java.awt.*;
import java.awt.event.*;
import java.applet.*;

import com.jacob.com.*;
import com.jacob.activeX.*;

/**
 * Applet test case
 */
public class AppTest extends Applet implements ActionListener {
	/**
	 * unique identifier added by Eclipse because this class is serializable
	 */
	private static final long serialVersionUID = -6676420357823607065L;

	TextField in;

	TextField out;

	Button calc;

	ActiveXComponent sC = null;

	/**
	 * startup method
	 */
	public void init() {
		setLayout(new FlowLayout());
		add(in = new TextField("1+1", 16));
		add(out = new TextField("?", 16));
		add(calc = new Button("Calculate"));
		calc.addActionListener(this);

	}

	/**
	 * action method that receives button actions
	 * @param ev the event
	 */
	public void actionPerformed(ActionEvent ev) {
		if (sC == null) {
			String lang = "VBScript";
			sC = new ActiveXComponent("ScriptControl");
			Dispatch.put(sC, "Language", lang);
		}
		Variant v = Dispatch.call(sC, "Eval", in.getText());
		out.setText(v.toString());
	}
}