windows - c# event when something on screen changes -

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not sure if it's possible. searched, not find solution question...

what i'm trying write tracks changes on screen (changes not related app - i'm subscribing change software changes on screen). example, if there movie playing on windows media player - display keeps on changing - time. or example animation in ie (or other browser / app) shows on screen. app notified there "movement" on screen, , if possible, area movement occurred.

is such thing possible?


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