Re: ListView speed

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Posted by Brian Levantine on December 07, 2014 at 13:46:08:

In Reply to: ListView speed posted by Grant Foraker on December 02, 2014 at 09:50:49:

Hi Grant. There are a couple of considerations here. The first is to make sure that you only make calls that will NOT return a value. Calls that return a value will cause the GDI cache to flush and cause a line turnaround (to return the result) which will really have a negative affect on performance. So, when you load the control you should limit the calls to COS.ListView.SetItemText. This will maximize use of the cache. Another limited but effective technique can be used when you can limit an entire record to 254 characters. You can send multiple columns in a single transaction by separating them with tab characters. Both of these techniques are demonstrated in the Dlg10.ibs demo program.

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