Finally moved up to 1.15. Also added 3137337 JNLP Example
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<HTML>
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<HTML>
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<BODY>
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<BODY>
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<!-- --------- -->
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<!-- --------- -->
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<h2>JACOB 1.15 M4</h2>
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<h2>JACOB 1.15</h2>
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<h3>What's New</h3>
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<h3>What's New</h3>
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<ul>
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<ul>
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<li>
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<li>
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<tr>
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<tr>
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<td colspan="2"><b>Feature Requests</b></td>
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<td colspan="2"><b>Feature Requests</b></td>
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</tr>
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</tr>
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<tr>
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</tr>
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<td width="13%" valign="top">3137337</td>
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<td width="87%" valign="top">Add JNLP Applet example. Read the README to understand what jar
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file signing and file placement is required</td>
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<tr>
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<tr>
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<td width="13%" valign="top">2963102</td>
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<td width="13%" valign="top">2963102</td>
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<td width="87%" valign="top">Convert API to use var args and remove the many overloaded Dispatch
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<td width="87%" valign="top">Convert API to use var args and remove the many overloaded Dispatch
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package com.jacob.samples.applet;
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import java.applet.Applet;
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import java.awt.Button;
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import java.awt.FlowLayout;
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import java.awt.TextField;
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import java.awt.event.ActionEvent;
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import java.awt.event.ActionListener;
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import com.jacob.activeX.ActiveXComponent;
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import com.jacob.com.Dispatch;
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import com.jacob.com.Variant;
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/**
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* Applet test case
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*/
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public class AppTest extends Applet implements ActionListener {
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/**
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* unique identifier added by Eclipse because this class is serializable
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*/
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private static final long serialVersionUID = -6676420357823607065L;
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TextField in;
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TextField out;
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Button calc;
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ActiveXComponent sC = null;
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/**
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* startup method
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*/
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public void init() {
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setLayout(new FlowLayout());
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add(in = new TextField("1+1", 16));
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add(out = new TextField("?", 16));
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add(calc = new Button("Calculate"));
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calc.addActionListener(this);
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}
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/**
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* action method that receives button actions
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*
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* @param ev
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* the event
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*/
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public void actionPerformed(ActionEvent ev) {
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if (sC == null) {
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String lang = "VBScript";
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sC = new ActiveXComponent("ScriptControl");
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Dispatch.put(sC, "Language", lang);
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}
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Variant v = Dispatch.call(sC, "Eval", in.getText());
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out.setText(v.toString());
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}
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}
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20
samples/com/jacob/samples/applet/Applet.html
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20
samples/com/jacob/samples/applet/Applet.html
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<html>
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<head>
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<title>Jacob Test Applet</title>
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</head>
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<body>
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<applet code="com.jacob.samples.applet.JacobTestApplet"
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name="JacobTestApplet"
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width="400"
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height="50"
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alt="Please install java first! (Java is available for free at www.java.com)">
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<param name="jnlp_href" value="Applet.jnlp">
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Java is not working! Several reasons:<br/>
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1.) Your Browser is not able to execute java (-> get a different browser e.g. firefox.com)<br/>
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2.) Java is not installed (-> install java e.g. java.com)<br/>
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3.) Java is disabled/deactivated (-> enable java in your web browser)<br/>
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4.) Your security settings are too tight (->enable java the settings)<br/>
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5.) Contact support @ nepatec<br/>
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</applet>
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</body>
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</html>
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27
samples/com/jacob/samples/applet/Applet.jnlp
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27
samples/com/jacob/samples/applet/Applet.jnlp
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<?xml version="1.0" encoding="UTF-8"?>
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<jnlp href="Applet.jnlp" spec="1.0+" version="1.1">
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<information>
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<title>Jacob Test Applet</title>
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<vendor>ttreeck, nepatec GmbH & Co. KG</vendor>
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<offline-allowed />
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</information>
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<security>
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<all-permissions/>
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</security>
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<resources>
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<j2se href="http://java.sun.com/products/autodl/j2se" version="1.6.0_20+" />
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<jar href="lib/JacobTestApplet.jar-selfSigned.jar" main="true" version="1.0.0" />
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<jar href="lib/jacob-signed.jar" version="1.0.0" />
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<nativelib href="lib/jacob-dll-1.15-M3-signed.jar"/>
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</resources>
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<applet-desc
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name="JacobTestApplet"
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main-class="com.jacob.samples.applet.JacobTestApplet"
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width="400"
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height="50">
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</applet-desc>
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</jnlp>
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88
samples/com/jacob/samples/applet/JacobTestApplet.java
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88
samples/com/jacob/samples/applet/JacobTestApplet.java
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package com.jacob.samples.applet;
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import java.applet.Applet;
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import java.awt.Button;
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import java.awt.FlowLayout;
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import java.awt.TextField;
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import java.awt.event.ActionEvent;
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import java.awt.event.ActionListener;
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import com.jacob.activeX.ActiveXComponent;
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import com.jacob.com.Dispatch;
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import com.jacob.com.Variant;
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/**
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* Example applet to demonstrate:
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* 1. The use of jacob from an applet
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* 2. To show how to distribute the jacob native lib with the applet (also works with webstart)
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*
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* Comment on 2.:
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* The way shown here is quite straight forward and it is not necessary to use
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* a mechanism like the "DLLFromJARClassLoader" or something similar...
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*
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* @author ttreeck, www.nepatec.de
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*
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*/
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public class JacobTestApplet extends Applet implements ActionListener {
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private static final long serialVersionUID = 4492492907986849158L;
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TextField in;
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TextField out;
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Button calc;
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ActiveXComponent sC = null;
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/**
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* startup method
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*/
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@Override
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public void init() {
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setLayout(new FlowLayout());
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add(this.in = new TextField("1+1", 16));
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add(this.out = new TextField("?", 16));
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add(this.calc = new Button("Calculate"));
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this.calc.addActionListener(this);
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}
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/**
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* Returns information about this applet.
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* According to the java spec:
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* "An applet should override this method to return a String containing information about the author, version, and copyright of the applet."
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*
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* @return information about the applet.
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*/
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@Override
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public String getAppletInfo() {
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return "Jacob Test Applet. Written by ttreeck, nepatec GmbH & Co. KG.\nhttp://www.nepatec.de";
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}
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/**
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* Returns information about the parameters that are understood by this applet.
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* According to the java spec:
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* "An applet should override this method to return an array of Strings describing these parameters."
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*
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* @return array with a set of three Strings containing the name, the type, and a description.
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*/
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@Override
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public String[][] getParameterInfo(){
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return new String[][]{};
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}
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/**
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* action method that receives button actions
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*
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* @param ev the event
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*/
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public void actionPerformed(ActionEvent ev) {
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if (this.sC == null) {
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String lang = "VBScript";
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this.sC = new ActiveXComponent("ScriptControl");
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Dispatch.put(this.sC, "Language", lang);
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}
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Variant v = Dispatch.call(this.sC, "Eval", this.in.getText());
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this.out.setText(v.toString());
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}
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}
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59
samples/com/jacob/samples/applet/Readme.txt
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samples/com/jacob/samples/applet/Readme.txt
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There is an easy and elegant way to load DLLs from Applets and JavaWebStart Applications.
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Both JavaWebStart and Applets support JNLP (Applets since 1.6.0_10 aka plugin2).
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Within a jnlp file it is possible to specify a nativelib and that's it!
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So what do you need to do?
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1.) package the jacob-1.XX-xXX.dll into a jar file (root level of the jar, not into a subfolder) and put it into your applications lib folder next to your other libs (e.g. jacob.jar)
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2.) Specify all your libraries in your jnlp file like this:
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<?xml version="1.0" encoding="UTF-8"?>
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<jnlp href="MyApplicaton.jnlp" spec="1.0+" version="1.1">
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<information>
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<title>My cool Application or Applet</title>
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<vendor>nepatec GmbH & Co. KG</vendor>
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<offline-allowed />
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</information>
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<security>
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<all-permissions/>
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</security>
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<resources>
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<j2se href="http://java.sun.com/products/autodl/j2se" version="1.6.0_10+" />
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<jar href="MyCoolApp.jar" main="true" version="1.0.0" />
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<jar href="jacob.jar" version="1.0.0" />
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<nativelib href="jacob-1.XX-xXX.jar"/>
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</resources>
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<!-- Use either this for an applet -->
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<applet-desc
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name="MyCoolApp"
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main-class="de.nepatec.app.MyCoolApplet"
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width="265"
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height="60">
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</applet-desc>
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<!-- or this for an web start application -->
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<application-desc main-class="de.nepatec.app.MyCoolApp">
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<argument>some crazy arguments</argument>
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</application-desc>
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</jnlp>
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3.) Sign all the jars or set up a policy file (cp. Applet Security below)
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4.) Deploy your application and start it via webstart or as an applet (from an webpage)
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General comments:
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- If you sign the jar files you need the <security> tag - when using a policy file it can be removed
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- furthermore it is recommended that all libs are signed with an official certificate (e.g. from verisign, thawte etc) so that the browser doesn't pop a warning stating 'untrusted' application...
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- to check the validity of your jnlp file the tool JaNeLA (link cp. sources below) is recommended.
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[Sources]
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New Applet: https://jdk6.dev.java.net/plugin2/
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Applet JNLP: https://jdk6.dev.java.net/plugin2/jnlp/
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Applet Security: http://java.sun.com/developer/onlineTraining/Programming/JDCBook/appA.html
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JNLP API: http://www.oracle.com/technetwork/java/javase/index-141367.html
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JNLP Verifier: http://pscode.org/janela/
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