How to close a Qml window when creating a QGLWidget - qt

Question

I am trying to build a game in which the ui part is made in qml (menu etc) while the rendering and logic part is in C++. For this I'm using a QGLWidget subclass. The game starts with Qml (using a QDeclarativeContext in the main function) and on clicking 'NewGame', I am loading my QGLWidget subclass. Something like this:
GameButton{
id:button2_1_1
x: 69
y: 101
width: 80
height: 80
onClicked:{ myObject.initialize(); myObject.show(); }
}
// myObject sets the context property to the object of my QGLWidget subclass
The problem is that I can't figure out a way to close my Qml window when I load the QGLWidget. As with what I've done two windows are displayed simultaneously.
Here's the code for it.
// import QtQuick 1.0 // to target S60 5th Edition or Maemo 5
import QtQuick 1.1
Rectangle {
id:newGameMenu
width: 640
height: 360
signal button2Clicked();
onButton2Clicked: console.log("new game should start")
Image{
id:background
source:"menubackground.jpg"
anchors.fill:parent
Button2 {
id: button21
x: 70
y: 101
width: 42
height: 42
}
}
Button2{
id:button2_1_1
x: 69
y: 101
width: 44
height: 44
onClicked:{ myObject.abc(); myObject.show(); console.log("glwindow called"); }
}
}
main.cpp
#include <QtGui/QApplication>
#include "qmlapplicationviewer.h"
#include <QDeclarativeView>
#include <QDeclarativeItem>
#ifndef GLWINDOW_H
#include "glwindow.h"
#endif
#include <QObject>
Q_DECL_EXPORT int main(int argc, char *argv[])
{
QScopedPointer<QApplication> app(createApplication(argc, argv));
QDeclarativeView view;
GLWindow w;
view.rootContext()->setContextProperty("myObject", &w);
view.setSource(QUrl::fromLocalFile(""));
view.show();
qDebug() << "into the qml";
return app->exec();
}

Answer 1

As with what I've done two windows are displayed simultaneously
I feels like you are showing two window, one QDeclarativeView and other QGLWidget.
In that case, you should try to hide, your QDeclarativeView when you are showing QGLWidget,

Answer 2

see http://qt-project.org/forums/viewthread/4109 which probably answers your question

Answer 3

Try setting .visible=false for the menu widget in onClicked.

Answer 4

What about http://qt-project.org/forums/viewthread/15160/
Also I would use a QStackedWidget with 2 QWidgets: One would be QDeclarativeView that holds your QML and the other QGLWidget that holds your OpenGL; Moving between QML and OpenGL would mean calling QStackedWidget::setCurrent();