PANECNT_VERTICAL 2279 third_party/wtl/include/atlctrlx.h if((dwPrevStyle & PANECNT_VERTICAL) != (m_dwExtendedStyle & PANECNT_VERTICAL)) // change orientation PANECNT_VERTICAL 2732 third_party/wtl/include/atlctrlx.h return ((m_dwExtendedStyle & PANECNT_VERTICAL) != 0);