QGraphicsView

[Maluko_Da_Tola]

I've just created a vertical layout and put my graphicsView object inside it. How do I get it to display the graphics? I've tried the following code, but it does not work:

MainWindow w;

w.setLayout(&graphicsView);

Thank you

[Zlatomir]

You can create your layout with the QWidget as parent (and the widgets added to layout will be re-parented to the MainWindow/Widget), like this:

MainWindow w;
QLabel label = new QLabel; //this will have w as a parent after it's added to the v_layout
//add more widgets to layout
//...
QVBoxLayout *v_layout = new QVBoxLayout(&w);
v_layout->addWidget(label);
//...
w.show(); //you need to show just w

MainWindow w;
QLabel label = new QLabel; //this will have w as a parent after it's added to the v_layout
//add more widgets to layout
//...
QVBoxLayout *v_layout = new QVBoxLayout(&w);
v_layout->addWidget(label);
//...
w.show(); //you need to show just w

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LE: the code above will work if you use a QWidget as the window (sorry)

if you use the QMainWindow or derived from it, you will need to parent the layout to a "container" QWidget and then add that QWidget as a centralWidget of your QMainWindow object, something like:

MainWindow w;
QWidget *container = new QWidget;
QLabel label = new QLabel; //this will have w as a parent after it's added to the v_layout
//add more widgets to layout
//...
QVBoxLayout *v_layout = new QVBoxLayout(container);
v_layout->addWidget(label);
//...
w.setCentralWidget(container);
w.show();       //you need to show just w

MainWindow w;
QWidget *container = new QWidget;
QLabel label = new QLabel; //this will have w as a parent after it's added to the v_layout
//add more widgets to layout
//...
QVBoxLayout *v_layout = new QVBoxLayout(container);
v_layout->addWidget(label);
//...
w.setCentralWidget(container);
w.show();       //you need to show just w

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[Maluko_Da_Tola]

hum... i'm not too sure about using Layouts... Could you indicate me some readings please?

Thank you

[Zlatomir]

Small tutorial, it has some links to others..., class reference
But the best resource to understand quickly, is read a book (i'm reading "Foundations of Qt Development" by Johan Thelin, and it's an excellent book)