Using JNA to get/set application identifier

Question

Following up on my previous question concerning the Windows 7 taskbar, I would like to diagnose why Windows isn\'t acknowledging that my application is independent of

Answer 1

If you just need to set the AppUserModelId then the above JNA code is enough. However if you want to take advantage of the new Windows 7 features in you Java application then check out J7Goodies a Java library providing Windows 7 taskbar extensions.

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EDIT: more info from J7Goodies Programmer's Guide

4.2. Setting AppUserModelID

In order to use any of the Windows 7 features an application must explicitly set its process identifier – Application User Model ID (AppUserModelID). It can have no more than 128 characters and cannot contain spaces. Each section should be camel-cased, for example:

 CompanyName.ProductName.SubProduct.VersionInformation

This identifier must be set before any GUI (window) is shown. You set it by calling:

// Remember to set AppUserModelID before creating any UI
AppUserModelId.setCurrentProcessId("StrixCode.J7Goodies.Appname");

4.3. Setting Window Properties

A Java application cannot be pinned to the Windows 7 taskbar unless its window properties are defined. The properties consist of four fields:

• AppUserModelID – the same as passed to AppUserModelId.setCurrentProcessId(String)
• RelaunchDisplayName – application’s name
• RelaunchCommand – the full command used to launch the application. In case of a Java program it will be: -jar
• RelaunchIcon – path to application’s icon

Important: RelaunchCommand and RelaunchDisplayName must always be set together. To set these properties use the straightforward WindowProperties class.

WindowProperties props = new WindowProperties(myFrame);
props.setRelaunchCommand("");
props.setRelaunchDisplayName("My Java Application");
props.setRelaunchIcon("");
props.setAppUserModelID("StrixCode.J7Goodies.Appname");
props.save();