Hi there,
In Qt 4 qDebug, qWarning etc just printed whatever was passed in. In Qt 5 we've
been changing this (1) so that you can configure Qt to print additional
information by setting the QT_MESSAGE_PATTERN environment variable. However, we
didn't change the default so far - so without setting QT_MESSAGE_PATTERN we
still just print the message. I just had a discussion (2) with Thiago Macieira
and David Faure where we agreed that we'd like to still change this for Qt 5.0
...
My personal motivation is that if e.g. the type would be always part of the
message Qt Creator could use this information to colorize/filter output. Adding
the app name / PID would identify the app in case of system logs, adding the
function would give you a clue where on earth you added this one debug
statement just printing "true" ;) So, what do you think about changing the
default format to e.g.
"[%{type}] %{appname}(%{pid}) %{function} %{message}"
Example output:
[warning] QtCreator(16693) QtSupport::BaseQtVersion::qtVersionString - Cannot
determine the Qt version: /home/kkoehne/dev/qt/test/bin/qmake cannot be run.
or
[warning] QtQmlViewer(16790) unknown -
file:///home/kkoehne/dev/qt/qt-5/qtdeclarative/examples/tutorials/gettingStartedQml/texteditor.qml:52:5:
Type MenuBar unavailable
Regards
Kai
PS: From an IDE perspective including the file + line would help so that you
could just 'jump' to the source of a warning by clicking on it. However, the
file string can get quite long (think about shadow builds) ...
[1] Documented in
http://doc-snapshot.qt-project.org/5.0/debug.html#warning-and-debugging-messages
[2] http://codereview.qt-project.org/#change,21655
--
Kai Koehne
Senior Software Engineer
Nokia, Mobile Phones
Nokia gate5 GmbH
Firmensitz: Invalidenstr. 117, 10115 Berlin, Germany
Registergericht: Amtsgericht Charlottenburg, Berlin: HRB 106443 B
Umsatzsteueridentifikationsnummer: DE 812 845 193
Geschäftsführer: Dr. Michael Halbherr, Karim Tähtivuori
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