CMFCListCtrl::OnCompareItems
The framework calls this method when it compares two items.
virtual int OnCompareItems(
LPARAM lParam1,
LPARAM lParam2,
int iColumn
);
Parameters
[in] lParam1
The first item to compare.[in] lParam2
The second item to compare.[in] iColumn
The index of the column that this method is sorting.
Return Value
An integer that indicates the relative position of the two items. A negative value indicates that the first item should precede the second, positive value indicates that the first item should follow the second, and zero means that the two items are equivalent.
Remarks
The default implementation always returns 0. You must override this function to provide a sorting algorithm.
Requirements
Header: afxlistctrl.h