extended-key

The value of this constant is an integer that will be passed as a bit flag component of the buttons argument to virtual-key-down or virtual-key-up if the key being pressed or released is one of several "extended keys". It is probably useful only for determining whether the righthand or lefthand version of the control key or alt key was pressed; this flag bit is passed for the righthand version only.

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Created 2010.1.21.