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Ruby Programming
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Windows Automation

If groveling around in the low-level Windows API doesn't interest you, Windows automation might---you can use Ruby as a client for Windows Automation thanks to a Ruby extension called WIN32OLE, written by Masaki Suketa. The examples in this section are taken from those provided in the WIN32OLE distribution.

Windows automation allows an automation controller (a client) to issue commands and queries against an automation server, such as Microsoft Excel, Word, PowerPoint, and so on.

You can execute a method of an automation server by calling a method of the same name from a WIN32OLE object. For instance, you can create a new WIN32OLE client that launches a fresh copy of Internet Explorer and commands it to visit the home page.

ie = WIN32OLE.new('InternetExplorer.Application')
ie.visible = true
ie.gohome

Methods that aren't known to WIN32OLE (such as visible or gohome) are passed on to the WIN32OLE#invoke method, which sends the proper commands to the server. The WIN32OLE reference beginning on page 505 describes the class in detail, but we'll go over a few of its features here.
Ruby Programming
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