[1.1.0+] HowTo use Region.observe()

That is a bit tricky, but for the Python level observeInBackground() is not useable (special method for the Java level).

So instead you have to use:
reg.observe(background=True)

... see docs.

... and carefully read through
http://sikulix-2014.readthedocs.io/en/latest/region.html#observing-visual-events-in-a-region

... and watch the changes with 1.1.0

When I use this:

onAppear(img, myhandler)
observe(10)

- it works fine. It observed the whole screen, see pic and write message "Seen".

And when I try to use this:

reg.onAppear(img, myhandler)
reg.observe(10, background=True)

- I see a "snowfall" of messages:
----------------------------------
Exception in thread "Thread-11" Traceback (most recent call last):
File "C:\SikuliX\SikuliX 1.1.1 08-11\sikulix.jar\Lib\sikuli\Region.py", line 63, in observe
...672 same lines
RuntimeError: maximum recursion depth exceeded (Java StackOverflowError)
---------------------------------

Not critical for me at my work but it could be interesting to solve. Thanks.

The same problem, hundreds of lines "File "C:\SikuliX\SikuliX 1.1.1 08-11\sikulix.jar\Lib\sikuli\Region.py", line 63, in observe", I have on Win7-32 and Win10-64.

When I change "10, background=True" → "10, background=False" I see only the error "RuntimeError: maximum recursion depth exceeded (Java StackOverflowError)" in red colour.

May be I missed something in syntaxis of observers, but I tried to read the docs carefully.

OK, I looked more closely the docs, tried the example and found out that adding the line

reg = JRegion(reg)

solved my problem at last. I don't know Java, this line was written on the off-chance. :)

That's curious that these lines produce different kinds of Region (Java and Python?):

reg = Region(x,y,w,h) # this doesn't work in observer
reg = selectRegion("select a region to observe") # this works in observer

But print(reg) gives in both cases "R[x,y wxh]@S(0) E:Y, T:3,0" where one can't see the difference between Java and Python level Region (hope this is right terminology).

My problem seems to be solved but I need some time to check.

Finally got this work out!!

regblueline = Region(602,315,100,150)
regblueline = JRegion(regblueline)
clicktoavoiderrordone = Region(1280,95,2,2)
count = False
popupcoc = "error1.png"
popupcoca = "error2.png"

def handler(event):
    global count
    count = True
    wait(2)
    print("#Observe Error")
    clicktoavoiderrordone.click()
    print("con")
    event.repeat(2)
    return count

regblueline.onAppear(Pattern("error1.png").exact(),handler)
regblueline.onAppear(Pattern("error2.png").exact(),handler)
regblueline.observeInBackground(FOREVER)

Got NO errors, observeinbackgronnd works fine...and the handler returns with success..!!

So the trick to observe in background always is this on 1.1.1

Thank you!!!

@spyros-liakos, ;) we do all the best to help each other here.

For the usage of observe with 1.1.0+ look:
http://sikulix-2014.readthedocs.io/en/latest/region.html#observing-visual-events-in-a-region

This question was expired because it remained in the 'Open' state without activity for the last 15 days.

problem fixed with 1.1.1 nightly 2016-11-29