resize mdiArea with Mainwindow

[freevrs]

Als elements has been created with the designer

This is my Mainwindow.ccp

#include "mainwindow.h"
#include "ui_mainwindow.h"

#include <QApplication>
#include <QMdiSubWindow>

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

    //showMaximized();
    showFullScreen();

    setCentralWidget(ui->mdiArea);


}

MainWindow::~MainWindow()
{
    delete ui;
}

void MainWindow::on_actionBeenden_triggered()
{
    QApplication::quit();
}

and this is the Mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

    void createChild();

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

private slots:
    void on_actionBeenden_triggered();

    void on_actionFader_triggered();

private:
    Ui::MainWindow *ui;
};



#endif // MAINWINDOW_H

[edit: Fixed coding tags, use three backticks SGaist]

[SGaist]

In that case, why don't you put the mdiArea directly as central widget with designer ?

[freevrs]

I have the auto created QWidget , auto named central widget.
For this i have selected vertical layout.

Below the QWidget i have the mdiArea.

How can i change this ?
Or is that correct ?

[SGaist]

Add mdiArea to the vertical layout and you should be good to go.

[freevrs]

I think that is what i done, but it still desn't work

screenshot

[SGaist]

So what you want is to put all layout margins at 0 so your mdiArea widget will take the whole place

[freevrs]

I have done that, but the mdi area still does not scale out

[SGaist]

The question is going to be silly but did you just put it over the QMainWindow or did you explicitly clicked the layout vertically menu entry ?

[freevrs]

i clicked the vertical layout manualy on the central widget.
Also i cant put the mdi area over it.

[SGaist]

What do you mean by you can't put the mdi area over it ?

[freevrs]

I thougt i could mabey drag'n drop it

Here are all stepps i have done

Create Project with Widget
Created a mdiArea with designer
try to resize with code

[SGaist]

QWidget or QMainWindow ? In any case, you only need to put the QMdiArea in a layout on the widget

[freevrs]

Its a QT Widged Application

So i think it auto creates a MainWindow ??

I set the layout to vertical (see pictures in last postes)

[SGaist]

MainWindow can be a QMainWindow or a QWidget depending on what parameter you choose