CMFCHeaderCtrl::IsAscending
Indicates whether any column in the header control is sorted in ascending order.
BOOL IsAscending() const;
Return Value
TRUE if any column in the header control is sorted in ascending order; otherwise, FALSE.
Remarks
The value that this method returns is used to display the appropriate sort arrow on the header control item. Use the CMFCHeaderCtrl::SetSortColumn method to set the sort order.
Requirements
Header: afxheaderctrl.h