UpdatePanningFeedback() moves entire application window

[bob16972]

Context: MFC MDI CScrollView app, targeting Windows 7 When handling a WM_GESTURE command, specifically when GESTUREINFO.dwID = GID_PAN, and attempting to call UpdatePanningFeedback() to provide "over-panning" feedback when user attempts to pan beyond the scroll limits, the entire application window moves instead of the client area of the windows handle provided...

// In this case m_hWnd is my CScrollView derived view class member windows handle.
UpdatePanningFeedback(m_hWnd, 0, yOverpan, gi.dwFlags & GF_INERTIA);

Does anyone know if there is an alternative way to achieve the effect of the "over-panning" (that visual feedback that seems like your trying to stretch the client area beyond it's limits like a rubberband) only in the client area of the CScrollView window?