Re: [Rosegarden-devel] mute buttons

[Guillaume L. <gla...@te...>]

On Friday 21 December 2001 13:44, Richard Bown wrote:
> Chris Cannam wrote:
> > is this a good moment to try to thrash out how the rest of the xml
> > I/O should be done?

(BTW Chris, I haven't received this mail, did you reply privately ?)

> It probably is, if not now then soon.   With ever the more complicating
> structure of the file (with Instruments and the beginnings of Environment)
> we're going to need an angle.

I agree.

>  Where did we get to with that talk of DTDs
> and like?

I don't know if Qt's XML parser supports DTDs, and I'm note sure a DTD would 
be really helpful here. For the time being we're controlling both the 
generation and reading of the format, that is we'll never be confronted with 
a file which was generated by something else than our code. So a DTD would 
only bring more maintenance work whenever we decide to change the format.

>  What about the heirarchy I've started to introduce with the
> new elements (Track and Instrument within Composition) ?

I'm not sure I see what you're referring to.

> > btw, speaking of I/O, anyone suggest a nice simple way to read a
> > hexadecimal integer from a QString (in the same way as toInt reads
> > a decimal one)?
>
> I hate to say it after slagging off QTextStream but, erm, why don't you
> have a look at QTextStream?

Er, better look at that 2nd arg aptly named 'base', which QString::toInt() 
takes. From Qt's documentation :

QString str("FF");
  bool ok;
  int hex = str.toInt( &ok, 16 ); // will return 255, and ok set to TRUE


BTW sorry for the recent lack of activity on my side, I've been setting up a 
new router at home (we'll be able to host the project there if sourceforge 
starts being too much of a nuisance). I'm essentially done now.

-- 
Guillaume
http://www.telegraph-road.org