Find the widget responsible for another widget's actions
PtWidget_t *PtFindGuardian( PtWidget_t *child, int superior_only );
This function returns the widget that's responsible for the child's actions. This is either the child's natural parent or, if the child is Pt_PROCREATED, the widget that the child is a subordinate of (its superior widget).
If the superior_only value is nonzero, this function returns only a pointer to a superior widget as a guardian. If the child hasn't been procreated, the function returns NULL. (Only procreated widgets have superiors.)
A pointer to the child widget's legal guardian, or NULL if the child widget has no guardian.
PtGetParent(), PtValidParent(), PtWidgetParent()
“Ordering widgets” in the Managing Widgets in Application Code chapter of the Photon Programmer's Guide