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copied!<p>To open a whole bunch of files at once, send the shared NSWorkspace object <a href="http://developer.apple.com/mac/library/documentation/Cocoa/Reference/ApplicationKit/Classes/NSWorkspace_Class/Reference/Reference.html#//apple_ref/occ/instm/NSWorkspace/openURLs:withAppBundleIdentifier:options:additionalEventParamDescriptor:launchIdentifiers:" rel="nofollow noreferrer">an <code>openURLs:withAppBundleIdentifier:options:additionalEventParamDescriptor:launchIdentifiers:</code> message</a>, or call <a href="http://developer.apple.com/mac/library/documentation/Carbon/Reference/LaunchServicesReference/Reference/reference.html#//apple_ref/c/func/LSOpenURLsWithRole" rel="nofollow noreferrer">the <code>LSOpenURLsWithRole</code> function</a> or <a href="http://developer.apple.com/mac/library/documentation/Carbon/Reference/LaunchServicesReference/Reference/reference.html#//apple_ref/c/func/LSOpenFromURLSpec" rel="nofollow noreferrer">the <code>LSOpenFromURLSpec</code> function</a>. Either way, you'll pass an array of URLs to items to open.</p> <p>Each one of these will let you identify a specific application to use. NSWorkspace lets you specify it by bundle identifier, while the two Launch Services functions let you provide the URL or <code>FSRef</code> to a specific application bundle.</p> <blockquote> <p>… it must invoke the target app's openFiles NSApplication delegate method</p> </blockquote> <p>That isn't possible to require, because (a) the application may be document-based, in which case it probably does not have an NSApplication delegate and, even if it does, such a delegate would probably not respond to <code>application:openFiles:</code>, and (b) the application may not be Cocoa-based, in which case it would handle the Open Documents Apple Event directly. None of this is your application's business, so don't worry about it.</p>

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