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LVM_SETITEMCOUNT Overview  Group

The LVM_SETITEMCOUNT message prepares a list view control for adding a large number of items. You can send this message explicitly or by using the ListView_SetItemCount macro. 

LVM_SETITEMCOUNT 

wParam = (WPARAM) (int) cItems; 

lParam = 0; 

 

Parameters

cItems
Number of items that the list view control will ultimately contain.

Return Values

No return value.

Remarks

By sending the LVM_SETITEMCOUNT message before adding a large number of items, you enable a list view control to reallocate its internal data structures only once rather than every time you add an item.

See Also

ListView_SetItemCount

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