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[Question #269185]: OnAppear and OnVanish on the same region

To: sikuli-driver@xxxxxxxxxxxxxxxxxxx
From: Tetsuo <question269185@xxxxxxxxxxxxxxxxxxxxx>
Date: Mon, 13 Jul 2015 17:01:41 -0000
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New question #269185 on Sikuli:
https://answers.launchpad.net/sikuli/+question/269185

Hi again. 

Im writting a code that will check if an image appeared on a Region. After the image appears the program will scan the same region to see if it desappears.  When the image desappears it will start to scan to see if it appears again, and so on.

So, im using OnAppear and OnVanish on the same region with a single handler. (calling Repeat() in the end)

The problem with this solution is that the handler will continue to be called with type = APPEAR even if the handler was already triggered one time with APPEAR.  The same happen when the image disappears and the handler is called with type = VANISH. It will continue to be called with VANISH until the image appears again.

Is there a way to avoid this? Is it possible to unregister OnAppear/OnVanish and register it again in a Region?
Do i have to use two different regions with the same dimmensions?

Thanks

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