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Procedure that's called whenever the viewport is modified/updated? (PI ProcessBook)

Question asked by Jason_Witt on Jul 21, 2017
Latest reply on Jul 24, 2017 by kduffy

Hi, I'm building a display in PI ProcessBook 2015 ( and I'm trying to make a title bar with a few control buttons remain at the top of the view port as the user zooms and pans the display. I have the rest of the code worked out for how those symbols will be arranged, I just need a way to call it. Is there some procedure like value_update() that would be called every time the view-port parameters are updated? Or is there some other way to keep track of view-port parameters and continuously check to see if they've changed?