How to Use a List View's ListView_SetItemCount?

How exactly are you supposed to use the ListView_SetItemCount function for a non-virtual list view in Win32?

I've looked at the documentation, but I still can't figure out:

• Whether I'm supposed to call ListView_SetItem instead of ListView_InsertItem to add an item, after calling ListView_SetItemCount.

• Why neither of the above approaches seems to accelerate adding a large n开发者_运维百科umber of items (around a few hundred) to a list view. :(

Any ideas?

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It is the same idea as vector::capacity(). It is not going to make a noticeable improvement on a few hundred items.