[Qt-qml] A simple, complete example of QML onvoking C++?

[Peter Matuchniak]

Thanks Colin & Brett for your examples and input.  I am seeing a strange problem with regards to text not showing when using the "DeclarativeView" approach -- this has to be a bug or something that's different when running it through the regular QML viewer.

I created a simple QML page with some text in it next to a colored rectangle:
- using QML viewer this page displays fine (both text and rectangle display)
- using the self-built C++ code based on your input I see no text (only the rectangle)

The other approach that Colin offered resembles the QML documentation, but:
- using the self-built C++ code the QML window never displays.

Note that I am using the Qt 4.7.0 application framework, built from source on a Ubuntu VM...

Kind regards
Peter


-----Original Message-----
From: Colin Kern [mailto:colin.kern at gmail.com]
Sent: Tuesday, April 13, 2010 12:05 PM
To: Peter Matuchniak
Cc: qt-qml at trolltech.com
Subject: Re: [Qt-qml] A simple, complete example of QML onvoking C++?

On Tue, Apr 13, 2010 at 2:52 PM, Peter Matuchniak
<pmatuchniak at imsco-us.com> wrote:
> Hello Colin
>
> Thanks for the input.  Although it compiles fine and appears to run without any errors, I don't actually see the QML page appear (i.e. myqml.qml is never displayed).
>
> I'm using Qt 4.7 that I built from source on Ubuntu.
>

Ok, I guess that code in main.cpp never actually displays the widget.
I took that from the QDeclarative documentation, but I'm not sure what
its use is if it doesn't display anything.  Try this main.cpp:

#include "foo.h"
#include <QDeclarativeView>

int main(int argc, char **argv)
{
   QApplication app(argc, argv);

   QDeclarativeView *view = new QDeclarativeView();
   view->rootContext()->setContextProperty("myFoo", new Foo);
   view->setSource(QUrl("myqml.qml"));
   view->show();

   return app.exec();
}


Colin



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