Enumeration Case


Mouse tracking occurs only in the visible rectangle of the view—in other words, that region of the tracking rectangle that is unobscured. Otherwise, the entire tracking area is active regardless of overlapping views. The NSTrackingArea object is automatically synchronized with changes in the view’s visible area (visibleRect) and the value returned from rect is ignored. This value specifies a behavior of the tracking area defined by the NSTrackingArea.


NSTrackingInVisibleRect = 0x200