[PyQt] QTableWidget Data Paste Time
david.douard at logilab.fr
Thu Jul 31 10:24:37 BST 2008
On Wed, Jul 30, 2008 at 02:22:38PM -0700, Glenn Linderman wrote:
> On approximately 7/30/2008 2:10 PM, came the following characters from
> the keyboard of B Clowers:
>> I'm interested in incorporating a QTableWidget into one of my
>> applications and would like to give it the functionality to cut, copy,
>> and paste a user selection. So far I've implemented the copy and
>> paste actions to a functional level. However, I often deal with very
>> large arrays (e.g. 250000) rows, as such when pasting an array of that
>> size it seems to take on the order of 8-10 seconds to actually set the
>> data in the table. I've attached a small example script that has the
>> copy and paste functionality and was hoping some of the more
>> experienced programmers out there could take a look and comment on
>> whether it is possible to commit data to the QTableWidget in a more
>> efficient manner. So far I've only been able to use the setItem()
>> function iteratively. There doesn't seem to be a setItems() (i.e.
>> setting a large list of items at one time). Thanks for your help.
>> -ps I didn't attach a text file with 250000 rows as it is about 1MB
>> compressed, though if anyone is interested let me know and I'll send
>> it on.
> So, I'm a PyQt newbie, so I can't help, but I can add that I've also
> noticed that originally populating a large QTableWidget takes a long
The solution for this is to use a QTableView and a QTableModel. See Qt
and examples in PyQt (eg. in examples/itemviews ).
> So if someone can offer help, it would help us both!
> Glenn -- http://nevcal.com/
> A protocol is complete when there is nothing left to remove.
> -- Stuart Cheshire, Apple Computer, regarding Zero Configuration Networking
> PyQt mailing list PyQt at riverbankcomputing.com
David Douard LOGILAB, Paris (France), +33 1 45 32 03 12
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