PtWidgetVisibleExtent()

Calculate the visible portion of a widget

Synopsis:

int PtWidgetVisibleExtent ( PtWidget_t *widget,
                            PhRect_t *rect );

This function determines the portion of a rectangle, rect, that isn't clipped by any parent of widget.

0: No portion of rect is visible
1: Success - rect contains the portion of the original rectangle that isn't clipped by any of widget's parents

Photon