[Qt-interest] Fwd: Re: Poor performance of "setBackground()" API in QTableWidgetItem class in Qt 4.5.1

[Mark Pereira]

Hi Sean,

I'm using pre-compiled qt-win-commercial-4.5.1-vs2005.exe version of Qt.

Regards,
Mark

Sean Harmer wrote:
> Oops replied in private by mistake. Copy for list...
> ----------  Forwarded Message  ----------
>
> Subject: Re: [Qt-interest] Poor performance of "setBackground()" API in	
> QTableWidgetItem class in Qt 4.5.1
> Date: Thursday 11 Jun 2009
> From: Sean Harmer <sean.harmer at maps-technology.com>
> To: Mark Pereira <mark at softjin.com>
>
> Hi,
>
> On Thursday 11 Jun 2009 09:20:31 you wrote:
>   
>> Hi Seam,
>>
>> In my application I need to set the background color of couple of cells
>> in the table only, so setting the background of the complete table wont
>> work.
>>     
> OK but in that case surely the time taken to set the background on a few cells 
> is insignificant.
>
> But for the purposes of investigating your performance problem I ran your test 
> app here and got the following results:
>
> 185,158,148,163,142
>
> This is on Gentoo Linux, 64-bit, nvidia-drivers-180.60 on a GeForce 8800 GTS, 
> KDE 4.2.4 using KWin's compositing, CPU 2.4GHz Core2 duo.
>
> Did you build QT yourself or are you using one of the pre-compiled packages?
>
> Cheers,
>
> Sean
>
>
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>   



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