WebDAV and Qt4

Jazoja

I am trying to write a calendar application under linux with qt4.
I have found that webdav is developed for Qt3 and now I have some problem using it in Qt4.
In webdav.h there is a line:
@#include <QDomNodeList>@
but I can't seem to find a class or anything under that name.

giesbert

If webDAV was written for Qt3, you have to port it if you want to use it with Qt 4.
You could find some help in the "docs":http://doc.qt.nokia.com/4.7/porting4.html

goetz

Which "webdav" do you refer to? Qt (neither 3 nor 4) comes with an implementation of it.

Jazoja

I followed this description:
http://xf.iksaif.net/dev/qwebdav.html

My problem was:
QHttp is deprecated in Qt4, but I solved it by this description:
You have to activate the network library in the .pro file (QT+=network)
http://www.qtforum.org/article/13401/qt-4-0-qhttp-problem.html

but then comes that problem what I mentioned earlier

andre

QDomNodeList is part of the XML module, so you have to add that module to your .pro file as well:

@
QT += xml
@

Jazoja

thanx so much!

Jazoja

Now another question.
I followed this description:
http://xf.iksaif.net/dev/qwebdav.html

But I cant use the line:
@#include <QWebdav>@
instead I am able to use this:
@#include <qwebdav/QWebdav>@

but this way the compiler drops the first error for the following line:
@QWebdav webdav = new QWebdav;@
saying:
@error: undefined reference to 'QWebdav::QWebdav(QObject)'@

giesbert

Hi Jazoja,

regarding the include thing:
where did you put the QWebDav includes and libs etc? You have to extend your include paths in the pro file (look at the docu, how to do it).

The second error is a linker error i suppose. You do not link to the qwebdav dll. How to do it, depends on the tool chain. On windows, it's:

MSVS tool chain:
@
LIBS += qwebdav.lib
@

mingw tool chain:
@
LIBS += -lqwebdav
LIBS += -L<path to webdav .a file>
@

Jazoja

It is ubuntu 10.10, but I think I upgrade to 11.04, because I have heard that it has integrated Qt support.

The source files are in a subfolder under home, I made the build and install here, but I didn't specify target folders, everything went automatically.

Now I am trying to find out what the installer (make install) did do.

giesbert

on linux, if you use gcc, it's the same parameters as mingw

Jazoja

I use the IDE named "qt creator", I think it uses qmake. (that uses gcc...?)

giesbert

QtCreator is the IDE.
It uses a tool chain on your PC.
On Linux, that is typically gcc.

Jazoja

I think I managed to solve the problem. :-)

I have copied from here:
@desktop/qwebdav/src/@
to here:
@/usr/include/qt4/QTWebDAV@
the following header files:
@webdav.h
webdav_export.h
webdav_url_info.h@
and the information (?) files:
@QWebdav (QtCreator looks for this file when compiling <QWebdav>)
QWebdavUrlInfos@

Now it compiles without errors.
No adding or copying of the library was needed, maybe later...

I am a beginner in Qt and linux, thanx for all the help and suggessions, it helped me a lot.

goetz

@#include <xxxx.h>@
is only searched in standard inlcude paths (those which are added with -I to the compiler options), whereas

@#include "xxxx.h"@
is searched in standard include paths and local directories too.

See older thread "Include Files":http://developer.qt.nokia.com/forums/viewthread/3051 for discussion.

Jazoja

Sorry.
Copying the compiled qwebdav lib files to usr/lib, and adding the line
@unix|win32: LIBS += -lqwebdav@
was also needed.

Last time I did the same, but after deleting and removing them, qt compiled successfully again.

Jazoja

Ahhh...
I reinstalled linux (deleted Ubuntu and installed Debian).
Installed all the needed packages, and made the automated qwebdav make/install.
Qt Creator didn't find <QWebdav>

I made all the needed install steps, but Qt Creator still cannot find <QWebdav>.
I placed the apropriate header and info files to the proper folders. (as I described before)