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screenshot changed?

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I am trying to do some automation; I want to set an app to screenshot the the screen and then the problem will be,

has anything changed since the last screenshot?

I think a checksum can be done to verify this, yet I don't know how to calculate the checksum...

how do I do that, or is there another way to check if the screen has changed?

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You could use PixelChecksum() (check it out in the help file), but this would work better if you could restrict it to a certain area of interest. It could be very CPU intensive and slow to do the whole desktop repeatedly. Maybe with a step applied it wouldn't be so bad...


Valuater's AutoIt 1-2-3, Class... Is now in Session!For those who want somebody to write the script for them: RentACoder"Any technology distinguishable from magic is insufficiently advanced." -- Geek's corollary to Clarke's law
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