Get the control surface behind a given one
PtSurface_t *PtSurfaceBrotherBehind( PtWidget_t *widget, PtSurface_t *surface );
This function gets the control surface behind the surface described by surface.
A pointer to the PtSurface_t structure describing the control surface behind, or NULL if there isn't one.
PtInsertSurface(), PtInsertSurfaceById(), PtSurfaceInBack(), PtSurfaceInFront(), PtSurfaceBrotherInFront(), PtSurfaceToBack(), PtSurfaceToBackById(), PtSurfaceToFront(), PtSurfaceToFrontById()
Control Surfaces chapter of the Photon Programmer's Guide