Windows installer 4.5是什么

简单的说就是应用程序安装和配置服务用的，下面的看得懂我就不翻译了
The Microsoft® Windows® Installer (MSI) is the application installation and configuration service for Windows. Version 4.5 of the Windows Installer has several new features, including:

Multiple Package Transaction: In a multiple package transaction, you can create a single transaction from multiple packages. In a multiple package transaction, a chainer is used to dynamically include packages in the transaction. If any of the packages do not install as expected, you can roll back the installation.

Embedded UI Handler: You can embed a custom user interface (UI) handler in the Windows Installer package. This makes a custom UI easier to integrate. You can also invoke an embedded UI handler from the Add or Remove item in Control Panel. Or, you can invoke an embedded UI handler during a Windows Installer repair process.

Embedded Chainer: You can use the embedded chainer to add packages to a multiple package tra