ListView_SetItemCountListView_SetItemCount*
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ListView_SetItemCount


void ListView_SetItemCount(
    HWND hwndLV,
    int cItems
);

Causes the list view control to allocate memory for the specified number of items. You can use this macro or send the LVM_SETITEMCOUNT message explicitly.

hwndLV
Handle to a list view control.
cItems
Number of items for which the list view control should allocate memory.

If the list view control was created without the LVS_OWNERDATA style, this macro causes the control to allocate its internal data structures for the specified number of items. This prevents the control from having to allocate the data structures every time an item is added.

If the list view control was created with the LVS_OWNERDATA style (a virtual list view), the ListView_SetItemCountEx macro should be used.

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