Resize a QDockWidget ? (Width)

[Selven]

Hi,
I have a problem with my QDockWidget, I want it to take all available width space. But it only takes the minimum space...

This is the source code that I do :

//testWidget.h
class testWidget : public QWidget
{
    Q_OBJECT
 
public:    
    explicit testWidget(QWidget *parent = 0);
    QLabel test;
    QPushButton testButton;
 
};

//testWidget.h
class testWidget : public QWidget
{
    Q_OBJECT

public:    
    explicit testWidget(QWidget *parent = 0);
    QLabel test;
    QPushButton testButton;
    
};

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//testWidget.cpp
testWidget::testWidget(QWidget *parent) :
    QWidget(parent)
{
    setStyleSheet("background-color: yellow");
 
    test.setText("test label");
    test.setParent(this);
    test.setVisible(true);
 
    testButton.setText("TestButton");
    testButton.setParent(this);
    testButton.move(0, 20);
    testButton.setVisible(true);
}

//testWidget.cpp
testWidget::testWidget(QWidget *parent) :
    QWidget(parent)
{
    setStyleSheet("background-color: yellow");

    test.setText("test label");
    test.setParent(this);
    test.setVisible(true);

    testButton.setText("TestButton");
    testButton.setParent(this);
    testButton.move(0, 20);
    testButton.setVisible(true);
}

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//mainWindow.h 
class mainWindow : public QMainWindow
{
    Q_OBJECT
 
public:
    explicit mainWindow(QWidget *parent = 0);
    testWidget *testW;
};

//mainWindow.h 
class mainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit mainWindow(QWidget *parent = 0);
    testWidget *testW;
};

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//mainWindow.cpp
mainWindow::mainWindow(QWidget *parent)
    : QMainWindow(parent)
{
    setFixedSize(1000, 900);
 
    QLabel *test = new QLabel;
    test->setFixedSize(500,900);
    test->setStyleSheet("background-color: black;");
    setCentralWidget(test);
 
    testW = new testWidget;
 
    QDockWidget *dock = new QDockWidget("DOCKTEST", this);
    dock->setFeatures(QDockWidget::DockWidgetMovable | QDockWidget::DockWidgetFloatable);
    dock->setAllowedAreas(Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea);
    dock->setWidget(testW);
    addDockWidget(Qt::RightDockWidgetArea, dock);
}

//mainWindow.cpp
mainWindow::mainWindow(QWidget *parent)
    : QMainWindow(parent)
{
    setFixedSize(1000, 900);

    QLabel *test = new QLabel;
    test->setFixedSize(500,900);
    test->setStyleSheet("background-color: black;");
    setCentralWidget(test);

    testW = new testWidget;

    QDockWidget *dock = new QDockWidget("DOCKTEST", this);
    dock->setFeatures(QDockWidget::DockWidgetMovable | QDockWidget::DockWidgetFloatable);
    dock->setAllowedAreas(Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea);
    dock->setWidget(testW);
    addDockWidget(Qt::RightDockWidgetArea, dock);
}

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The result is:
1335632129-Capturedu2012-04-28185448.jpg

And I want that :
1335632129-Capturedu2012-04-28185455.jpg

I don't know how to do that, and if I add 2 widgets in the QDockWidget, how can I only define the height value ? (maybe 2/3 for the first one, and 1/3 for the second one)

So, if someone can help me, it will be very great !

Thanks in advance for your help,