[Solved] Error: forward declaration of 'class QQmlContext'

[maksim1979]

Hi guys

I'm playing with QML/C++ integration and now I'm trying to set context property as described here http://qt-project.org/doc/qt-5.0/qtqml/qtqml-cppintegration-contextproperties.html

So my code looks like this
@
#include <QtGui/QGuiApplication>
#include "qtquick2applicationviewer.h"
#include <QDateTime>

int main(int argc, char *argv[])
{
QGuiApplication app(argc, argv);

QtQuick2ApplicationViewer viewer;
viewer.rootContext()->setContextProperty(QStringLiteral("somedata"), QDateTime::currentDateTime());
viewer.setMainQmlFile(QStringLiteral("qml/TestQML/main.qml"));
viewer.showExpanded();

return app.exec();

}@

I've just added line 10 to the project generated code
@viewer.rootContext()->setContextProperty(QStringLiteral("somedata"), QDateTime::currentDateTime());@

But unfortunately I've got this error
../TestQML/main.cpp:10:25: error: invalid use of incomplete type 'class QQmlContext'
In file included from ../Qt5.1.0/5.1.0/gcc/include/QtQuick/QQuickView:1:0,
from ../TestQML/qtquick2applicationviewer/qtquick2applicationviewer.h:14,
from ../TestQML/main.cpp:2:
../Qt5.1.0/5.1.0/gcc/include/QtQuick/qquickview.h:52:7: error: forward declaration of 'class QQmlContext'

Maybe someone came across with that before?

[SGaist]

Hi,

You seem to be missing:

@#include <QQmlContext>@

[maksim1979]

SGaist, thank you very very much. Last 10 years I spent with java and now I'm having a lot of fun with such stupid mistakes. Thank you for you time and have a nice day

[SGaist]

You're welcome ! A little learning curve... Happy coding :)