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This class defines the properties and methods common to a reference movie selection criteria; a selection criteria, or a set of selection criteria, allows QuickTime to choose the movie, within a group of movies, whose media data are more appropriated to be presented in a given environment. QTPlugin defines a rich set of classes derived from the QTPlgAltCriteria class that allow you to setup a wide range of environmental characteristics, including the speed of the user’s connection to the Internet, the version of QuickTime that is installed on the user’s machine, the availability or version of certain software components and many others again.







The class has not constructor at all (you can always use the Realbasic common constructor syntax, of course, but you will obtain an usless object). Its destructor, will be implicitly invoked every time one of its derived classes will be destroyed.


specifies the OSType identifier of the selection criteria in use

(dstFile as folderitem)
use this method to write the content, in binary format, of the criteria currently in use to the file specified by the dstFile parameter. If an older file already existed at the location specified, it will be deleted and replaced from the new one
returns nothing. You can check the class property for errors