Qt 4.3 beta released

The first beta of Qt-4.3 has been released:
http://labs.trolltech.com/blogs/2007/03/21/qt-430-beta-released/

What’s new in Qt 4.3:
http://doc.trolltech.com/4.3/qt4-3-intro.html

In particular, this release offers OpenGL improvements, including
performance improvements and the ability to offer anti-aliased OpenGL
on hardware which supports it and not on older hardware.
(Documentation on what’s changed in Open GL is missing.)

It also mentions the new “QtScript” for scripting Qt applications via
signals/slots.

There’s also a few nice convenience classes, including:

KDE will be switching to Qt-4.3 by May 1st, so it might be a good
idea for Avogadro to move as well. Certainly OpenGL improvements
would be welcome!

Cheers,
-Geoff

KDE will be switching to Qt-4.3 by May 1st, so it might be a good
idea for Avogadro to move as well. Certainly OpenGL improvements
would be welcome!

Yes, I am wondering too what has changed. Currently, AFAIK, Avogadro does
not use much from the QtOpenGL module. We only use it to create the GL
context, and afterwards we use directly the OpenGL API. So there’s not
much room for improvement here.

However, this might change when we’ll want to paint text inside the
GLWidget (e.g. for atom labels). This is a nontrivial problem in letting
OpenGL and Qt interact and I think that Qt 4.2 already improved the
situation here. When I wrote kalzium3d for Qt 4.1 I had to write custom
code rendering QChars into textures etc, and I think that’s no longer
needed since 4.2. So maybe, that’s been further improved in Qt 4.3. I’ve
also read a vague allusion to Qt 4.3 allowing to render widgets inside a
GLWidget, but that was very vaguely formulated, so I’m not sure. In case
it’s true, it’d be insane.

Cheers,
Benoit

Cheers,
-Geoff


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KDE will switch to Qt 4.3-beta1 on Monday (next (!)). We do not want to wait for the final version.

Carsten


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(Fri, Mar 23, 2007 at 11:24:43AM -0400) Geoffrey Hutchison geoff.hutchison@gmail.com:

The first beta of Qt-4.3 has been released:
http://labs.trolltech.com/blogs/2007/03/21/qt-430-beta-released/

What’s new in Qt 4.3:
http://doc.trolltech.com/4.3/qt4-3-intro.html

New collapsible tabs!!! Now my “FlatTab” implementation is obsolete.

Looks cool. Doesn’t seem that there will be all that many problems
updating.

-D