Copyright © 2008, 2009 Arndt Roger Schneider
The Example 6.39, “FocusIn” fragment displays how such an external focus-ring can be made. The variable »window« is the external window for which a focus-ring is needed. The variable »stripes« is the Gstripes window in which the focus-ring is created. The variables »l« , »t« , »r« and »b« are the window’s boundaries.
The focus-ring is at first invisible, the call to »gstripes::interactive« makes it visible.