Qt 4.7 QML/C++ Error : "Package not found" and "Module foobar is not installed"

[kona_echinofu]

Hey all!

I've been really excited to get onto the new QML with C++ bandwagon. However, when trying to follow the tutorials (built-in "Charts" example) I've been running into this issue.

It will not allow me to use Designer for QML, as well as add my own modules/C++ plugins.

I've wiped Qt, re-installed and even re-built. Still getting the same error.

I've looked over the internet to find only one guy who experienced the same problem and mentioned QmlObserver being used instead of QmlViewer, but I cannot find any option to change this?

I have the brand new Qt 4.7 and I've also tried it with the new Qt Creator 2.0.92 (2.1.0 beta 1)

Here's some images of what I'm seeing:

In Code Editing View:

In Designer View:


Has any body experienced this problem, if so how did you solve it?

Or are there any Qt experts that could help me out, would be much appreciated as I'm excited to start using QML with C++.

Thanks in advance.

[kona_echinofu]

Is anybody else experiencing this, or not?

[kona_echinofu]

Ok, this gets even more strange.

I can actually code with C++, create my own types for QML and invokable functions, however. Like in the original pictures they are appearing as invalid in Designer and Code editor... So it is valid at run-time but not whilst coding... What is going on?

[wysota]

Creator doesn't know anything about your packages and modules so it can't highlight or complete it. You need to write some additional code to make your modules recognizable by Creator.

[kona_echinofu]

Hi Wysota,

Thanks for your reply. Surely, if an example is provided by Qt to view, it should have all code written already. I haven't written this, it came with the Qt package.

[wysota]

Surely, if an example is provided by Qt to view, it should have all code written already.

It's a coding example, not an example of highlighting qml syntax in Qt Creator which is not the only possible way one might be using Qt. If we try to understand it the way you do, Trolls would have to provide appropriate mechanisms for Visual Studio, Eclipse, KDevelop and all other possible code editors in the world.

[kona_echinofu]

It's a coding example, not an example of highlighting qml syntax in Qt Creator which is not the only possible way one might be using Qt. If we try to understand it the way you do, Trolls would have to provide appropriate mechanisms for Visual Studio, Eclipse, KDevelop and all other possible code editors in the world.

I never looked at it that way. Its just frustrating not being able to use c++ with qml designer. Is there anywhere with a tutorial (not the one provided by qt as it doesn't function) or will I have to wait till full release to be able to use qml with c++ with ease?

[wysota]

I never looked at it that way. Its just frustrating not being able to use c++ with qml designer. Is there anywhere with a tutorial (not the one provided by qt as it doesn't function) or will I have to wait till full release to be able to use qml with c++ with ease?

I have no idea what you mean.

[kona_echinofu]

I mean setting up Qt 4.7 to allow me to use C++ with QML and QML Designer. At this moment in time, I'm unable to do so as when I create C++ classes and expose them to QML and use them, they work and the application will run, but I cannot use QML Designer as it does not recognise these classes as QML objects and gives me the errors you see in the images.

[wysota]

I mean setting up Qt 4.7 to allow me to use C++ with QML and QML Designer.

QML and C++ are two different languages. You can't use them "together".

At this moment in time, I'm unable to do so as when I create C++ classes and expose them to QML and use them, they work and the application will run, but I cannot use QML Designer as it does not recognise these classes as QML objects and gives me the errors you see in the images.

Did you tell Creator about them by providing an appropriate extension plugin?