Can't get widget expanding that has a QGraphicsView as parent

Artemus

Hi,

i cant get a Widget expand horizontally that has a QGraphicsView as parent.
The widget should take the whole horizontal space that is available inside the QGraphicsView.
I tried like 1000 combinations of Settings with Layout, without Layout, with different child Widgets and so on.
(you can download the whole project-folder here: http://ubuntuone.com/0HPWnb4YyLyHDe2nWBtNbb )

Source:
@MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);

ui->view->setScene(&scene);
ui->view->show();
scene.setBackgroundBrush(Qt::DiagCrossPattern);

myWidget = new QWidget(ui->view,Qt::Widget);
myWidget->setAutoFillBackground(true);
myWidget->setMinimumSize(64,32);
myWidget->setMaximumSize(512,128);
myWidget->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);

myTextEdit = new QTextEdit(myWidget);
myTextEdit->setMaximumSize(64,16);
myTextEdit->setMaximumSize(512,64);
myTextEdit->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);

myButton = new QPushButton("a Button", myWidget);

myLayout = new QVBoxLayout;
myLayout->addWidget(myTextEdit);
myLayout->addWidget(myButton);

myWidget->setLayout(myLayout);

}@
Header:
@namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
Q_OBJECT

public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
QGraphicsScene scene;

QSpinBox* mySpinBox;
QTextEdit* myTextEdit;
QDockWidget* myDock;
QWidget* myWidget;
QVBoxLayout* myLayout;
QPushButton* myButton;

public slots:
void btn_hide(void);

private:
Ui::MainWindow *ui;
};@

mlong

Using setMaximumSize() on any widget will prevent it from expanding beyond that size.

Atul Patil

Hi Artemus,

set layout to Graphicsview as below
@
QVBoxLayout *vlay = new QVBoxLayout();
vlay->addWidget(myWidget);
ui->view->setLayout(vlay);
@

[Edit: Please wrap code in @ tags; mlong]