Qt Quick 5.7 ERROR "No style available without QApplication "

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Hi! Error (windows and ubuntu with last qt 5.7). I created qt quick 2 controls app, add chart 2d bar and try run project, but I've got an error. Look at picture

It is a bug or I do something wrong?

jpnurmi

@boniface Does it help if you add

QT += widgets

to your .pro file, and replace QGuiApplication with QApplication in main.cpp?

? Offline

@jpnurmi Yes, I did, but i have got this error "fatal error C1083: Cannot open include file: 'QApplication': No such file or directory". This error i've got at windows 10, tonight try ubuntu.

main.cpp

#include <QApplication>
#include <QQmlApplicationEngine>

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

QQmlApplicationEngine engine;
engine.load(QUrl(QStringLiteral("qrc:/main.qml")));

return app.exec();

}

pro file

TEMPLATE = app
QT += widgets qml quick charts
CONFIG += c++11
SOURCES += main.cpp
RESOURCES += qml.qrc
include(deployment.pri)

jpnurmi

@boniface Try re-running qmake. For some reason on Windows it doesn't always happen automatically.

Rivonsen

This is my .pro file;

TEMPLATE = app

QT += widgets qml quick charts
CONFIG += c++11

SOURCES += main.cpp

RESOURCES += qml.qrc

# Additional import path used to resolve QML modules in Qt Creator's code model
QML_IMPORT_PATH =

# Default rules for deployment.
include(deployment.pri)

This is my main.cpp;

#include <QApplication>
#include <QQmlApplicationEngine>

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

    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));

    return app.exec();
}

This is my .qml file

import QtQuick 2.0
import QtCharts 2.0

ChartView {
    width: 400
    height: 300
    theme: ChartView.ChartThemeBrownSand
    antialiasing: true

    PieSeries {
        id: pieSeries
        PieSlice { label: "eaten"; value: 94.9 }
        PieSlice { label: "not yet eaten"; value: 5.1 }
    }
}

and i get the same error , I don't know how to solve it

kshegunov

@Rivonsen said in Qt Quick 5.7 ERROR "No style available without QApplication ":

QApplication

Have you tried using QGuiApplication, which you should use when not dealing with widgets?

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

    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));

    return QGuiApplication::exec();
}

With project file:

TEMPLATE = app

QT += core gui qml quick charts
CONFIG += c++11

SOURCES += main.cpp
RESOURCES += qml.qrc