Simple Qt app doesn't open on Mac OSX Yosemite

Question

Environment

• Mac OSX Yosemite
• Qt5
• 3 files
  • main.cpp
  • main.qml
  • webengine.pro

main.cpp

#include <QtGui/QGuiApplication>
#include <QtQml/QQmlApplicationEngine>
#include <QtWebEngine/qtwebengineglobal.h>

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

  QQmlApplicationEngine engine;
  engine.load(QUrl("main.qml"));

  return app.exec();
}

main.qml

import QtQuick 2.0
import QtWebEngine 1.0
import QtQuick.Controls 1.3
import QtQuick.Window 2.0

ApplicationWindow {
    title: qsTr("Test")
    width: 1200
    height: 800
    visible: true

    WebEngineView {
      width: Screen.width
      height: Screen.height
      anchors.fill: parent
      url: 'http://duckduckgo.com'
    }  
}

webengine.pro

TARGET = browser
TEMPLATE = app
SOURCES = main.cpp
QT += qml quick webengine

Running QML - PASS

/usr/local/Cellar/qt5/5.4.0/bin/qmlscene main.qml 

Compiling and running Mac App - FAIL

qmake
make

then I clicked on browser.app , the application starts but no window opened.

Any hint about what I am doing wrong?

Answer 1

I guess the file main.qml is not found. You should get an error message "... File not found" in the console.

To solve this problem either supply a valid path on your drive or use Qt's resource management. This is documented here , I'll outline the steps:

1) Create file test.qrc with the following contents:

<!DOCTYPE RCC>
<RCC version="1.0">
<qresource prefix="/">
    <file>main.qml</file>
</qresource>
</RCC>

2) Add test.qrc to webengine.pro

RESOURCES += test.qrc

3) Modify main.cpp to load the qml file from the resources:

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