so I am using suckah for the first time in a long while and I am probably just misunderstanding something...

place the jit.suckah over anything and a mouse-down will give the the rgb value of that pixel. If I move my mouse inside suckah while it is still down, the values get updated. If I move outside the suckah perimeter, I shouldn't get any more values.

As long as I click on the suckah and don't let go, my values get updated!! Even when I leave the Max window and drag over something on my desktop!!!

here is a quick test patch (for both Max 5 and 4.6). I only want to be able to track the color within the rectangle and nothing else.

I expected the following behaviour:
place the jit.suckah over anything and a mouse-down will give the the rgb value of that pixel. If I move my mouse inside suckah while  it is still down, the values get updated. If I move outside the suckah perimeter, I shouldn't get any more values.

This is what I get: 
As long as I click on the suckah and don't let go, my values get updated!! Even when I leave the Max window and drag over something on my desktop!!! 

Is that the normal behaviour???
Am I making sense??

jit-suckah-questionbug

This is just how suckah works. You could use a mousestate object to test if the mouse has left the boundaries of the object (and use js to get those boundaries) and filter.

Or you could wait for 5.0.6, coming soon, which adds the @boundmode attribute to the suckah object to handle this for you.

jit.suckah question/bug??