Qt Quick 2.0 App with Quick Controls 1.0 (can't set color property of Application Window)

[KrabQT]

I am really frustrated why it doesn't work. I just created Quick 2.0 app with quick controls in latest qt sdk for mac and modified qml code a bit (add one MouseArea and set clicked handler to set parent.color). When i click inside that app window, it outputs that parent does not have color property (??????? in doc ApplicationWindow inherits from Window and it has color property). If i am tried just consolo.log that color property, it gaves me undefined.
PLEASE what i am doing wrong? I need work, thx.

[onek24]

Hello and welcome to qt-project.org,

could you please provide us your QML-code so i can see what's going on in there?

[KrabQT]

@import QtQuick 2.1
import QtQuick.Controls 1.0

ApplicationWindow {
title: qsTr("Hello World")
width: 1400
height: 800
color: "black"

menuBar: MenuBar {
    Menu {
        title: qsTr("File")
        MenuItem {
            text: qsTr("Exit")
            onTriggered: Qt.quit();
        }
    }
}

Rectangle {
    width:200
    height:200
    color: "#414141"
    id: kik
}

MouseArea {
    anchors.fill: parent
    onClicked: {parent.color = "black"}
}

}@

[onek24]

Theoretically it should be right. Could you please tell me which viewer you're using?

[KrabQT]

I am using just what was generated from newset Qt designer.

main.cpp

@#include "qtquick2controlsapplicationviewer.h"

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

QtQuick2ControlsApplicationViewer viewer;
viewer.setMainQmlFile(QStringLiteral("qml/asfasf/main.qml"));
viewer.show();

return app.exec();

}@

qtquick2controlsapplicationviewer.h

@#ifndef QTQUICK2APPLICATIONVIEWER_H
#define QTQUICK2APPLICATIONVIEWER_H

#ifndef QT_NO_WIDGETS
#include <QApplication>
#else
#include <QGuiApplication>
#endif

QT_BEGIN_NAMESPACE

#ifndef QT_NO_WIDGETS
#define Application QApplication
#else
#define Application QGuiApplication
#endif

QT_END_NAMESPACE

class QtQuick2ControlsApplicationViewer
{
public:
explicit QtQuick2ControlsApplicationViewer();
virtual ~QtQuick2ControlsApplicationViewer();

void setMainQmlFile(const QString &file);
void addImportPath(const QString &path);
void show();

private:
class QtQuick2ApplicationViewerPrivate *d;
};

#endif // QTQUICK2APPLICATIONVIEWER_H
@

qtquick2controlsapplicationviewer.cpp

@#include "qtquick2controlsapplicationviewer.h"

#include <QCoreApplication>
#include <QDir>
#include <QQmlComponent>
#include <QQmlEngine>
#include <QQuickView>

class QtQuick2ApplicationViewerPrivate
{
QString mainQmlFile;
QQmlEngine engine;
QQuickWindow *window;

QtQuick2ApplicationViewerPrivate() : window(0)
{}

~QtQuick2ApplicationViewerPrivate()
{
    delete window;
}

static QString adjustPath(const QString &path);

friend class QtQuick2ControlsApplicationViewer;

};

QString QtQuick2ApplicationViewerPrivate::adjustPath(const QString &path)
{
#if defined(Q_OS_IOS)
if (!QDir::isAbsolutePath(path))
return QString::fromLatin1("%1/%2")
.arg(QCoreApplication::applicationDirPath(), path);
#elif defined(Q_OS_MAC)
if (!QDir::isAbsolutePath(path))
return QStringLiteral("%1/../Resources/%2")
.arg(QCoreApplication::applicationDirPath(), path);
#elif defined(Q_OS_BLACKBERRY)
if (!QDir::isAbsolutePath(path))
return QStringLiteral("app/native/%1").arg(path);
#elif !defined(Q_OS_ANDROID)
QString pathInInstallDir =
QStringLiteral("%1/../%2").arg(QCoreApplication::applicationDirPath(), path);
if (QFileInfo(pathInInstallDir).exists())
return pathInInstallDir;
pathInInstallDir =
QStringLiteral("%1/%2").arg(QCoreApplication::applicationDirPath(), path);
if (QFileInfo(pathInInstallDir).exists())
return pathInInstallDir;
#endif
return path;
}

QtQuick2ControlsApplicationViewer::QtQuick2ControlsApplicationViewer()
: d(new QtQuick2ApplicationViewerPrivate())
{

}

QtQuick2ControlsApplicationViewer::~QtQuick2ControlsApplicationViewer()
{
delete d;
}

void QtQuick2ControlsApplicationViewer::setMainQmlFile(const QString &file)
{
d->mainQmlFile = QtQuick2ApplicationViewerPrivate::adjustPath(file);

QQmlComponent component(&d->engine);

QObject::connect(&d->engine, SIGNAL(quit()), QCoreApplication::instance(), SLOT(quit()));

#ifdef Q_OS_ANDROID
component.loadUrl(QUrl(QStringLiteral("assets:/")+d->mainQmlFile));
#else
component.loadUrl(QUrl::fromLocalFile(d->mainQmlFile));
#endif

if (!component.isReady())
    qWarning("%s", qPrintable(component.errorString()));

d->window = qobject_cast<QQuickWindow *>(component.create());
if (!d->window)
    qFatal("Error: Your root item has to be a Window.");

d->engine.setIncubationController(d->window->incubationController());

}

void QtQuick2ControlsApplicationViewer::addImportPath(const QString &path)
{
d->engine.addImportPath(QtQuick2ApplicationViewerPrivate::adjustPath(path));
}

void QtQuick2ControlsApplicationViewer::show()
{
if (d->window)
d->window->show();
}
@

[KrabQT]

ok i got it

1. i don't now why, but parent of mouse area isn't that application window, because if i specify on application window id, then parent != 'id value'
2. i must call update after i changed the color (i thought it does automatically)

[onek24]

Well actually it should update automatically. You could try to use a QQuickView instead of the qtquick2applicationviewer. Maybe it'll work with it.