RE: LVM_INSERTITEM very slow in vista/W7

Hi Nikos,

> in a large listview control collection (say 5000 items), adding a SINGLE
extra item can take 10+ seconds in windows 7, and that's just the
LVM_INSERTITEM message handling

> it looks that it only affects LVS_ICON, LVS_REPORT and LVS_LIST are still
very fast

If you are dealing with that volume of data I'd suggest you seriously
consider making the list control virtual (LVS_OWNERDATA style). In that case
you won't need LVM_INSERTITEM so the problem won't arise.

The only downside I can think of is that virtual list controls don't support
grouping, so unless you're using that you should seriously consider
switching to a virtual control.



Cheers,

	Anna x
	http://www.annasplace.me.uk

	IM: [email protected] (MSN) / jalapenokitten (Yahoo)
	Twitterings: http://twitter.com/annajayne
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