Given no other way to determine when a collection of controls hasn't been pressed other then to intercept all presses elsewhere, I've had the cunning plan of putting my pop-up selector on a screen-filling widget so everything not in the scroll graphic counts as a press outside of the selector and I can retract. However, other controls gain precedent over the on-top (as determined by level) collider.
What's the way to raise the priority of widget's so their controls overlap all others?