virtual int CompareItem( LPCOMPAREITEMSTRUCT lpCompareItemStruct );
Return Value
Indicates the relative position of the two items described in the COMPAREITEMSTRUCT structure. It may be any of the following values:
| Value | Meaning |
| –1 | Item 1 sorts before item 2. |
| 0 | Item 1 and item 2 sort the same. |
| 1 | Item 1 sorts after item 2. |
See CWnd::OnCompareItem for a description of the COMPAREITEMSTRUCT structure.
Parameters
lpCompareItemStruct
A long pointer to a COMPAREITEMSTRUCT structure.
Remarks
Called by the framework to determine the relative position of a new item in a sorted owner-draw list box. By default, this member function does nothing. If you create an owner-draw list box with the LBS_SORT style, you must override this member function to assist the framework in sorting new items added to the list box.
CListBox Overview | Class Members | Hierarchy Chart
See Also WM_COMPAREITEM, CWnd::OnCompareItem, CListBox::DrawItem, CListBox::MeasureItem, CListBox::DeleteItem