[Qt-interest] QAbstractFileEngine problems

[Jason H]

How am I supposed to provide a virtual file system separate from the OS then? 
I'll switch to some other class if I have to.

And you didn't answer my question. What needs to happen to have me write data? 
The file creation on open() happens, but my custom write (const char *, qint64) 
handler never gets called.






----- Original Message ----
From: Thiago Macieira <thiago at kde.org>
To: qt-interest at trolltech.com
Sent: Wed, July 7, 2010 2:07:22 AM
Subject: Re: [Qt-interest] QAbstractFileEngine problems

On Wednesday 7. July 2010 06.55.28 Jason H wrote:
> I have most of it working, but I have a problem with my write function not
> being
> 
> called:
> DatabaseFileEngineHandler dbFileEngine;

Please stop using file engines. They are a feature we want to get rid of.

The reason is that normal, plain file access is extremely complex and slow 
because of the abstractions created by the presence of multiple file engines. 
We are rewriting the QFile / QDir / QDirIterator internals to be faster. 

However, this is only possible if you never install file engines. So I 
recommend that you already stop using them in your new programs.

-- 
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
  Senior Product Manager - Nokia, Qt Development Frameworks
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