Invalid use of qualified-name

[Miikukka]

When I run my file Qt Creator says: @invalid use of qualified-name 'QUiLoader::createLayout'@

There is my cpp file.
@#include "harjoittelu.h"
#include "ui_harjoittelu.h"

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

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

void Harjoittelu::on_pushButton_2_clicked()
{
QLayout QUiLoader::createLayout(const QString &harjoittelu, QObject Harjoittelu = 0, const QString &Edit = QString());
}
@

And there is header:
@#ifndef HARJOITTELU_H
#define HARJOITTELU_H

#include <QMainWindow>
#include <QtUiTools/QUiLoader>

namespace Ui {
class Harjoittelu;
}

class Harjoittelu : public QMainWindow
{
Q_OBJECT

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

private:
Ui::Harjoittelu *ui;
#include <QtUiTools/QUiLoader>

private slots:
void on_pushButton_2_clicked();
};

#endif // HARJOITTELU_H@

Do you know what is the problem???
Thanx!!!!

[Eddy]

why is
@#include <QtUiTools/QUiLoader> @
in the middle of your class and not on top of your page...?

[Miikukka]

Ups. I just tested where I must put that, and forgot it. I took it out, but nothing happened.

[Eddy]

your use 'QUiLoader::createLayout'
in line 18 of your cpp file. Qt Creator is telling to look there.

There you are using a declaration of a virtual function in the body of a function!!!

What is it you want to do exactly?

[Miikukka]

Ööö.. [quote author="Eddy" date="1307111920"]There you are using a declaration of a virtual function in the body of a function!!!
What is it you want to do exactly?
[/quote]I didn't get this really.
I want open new layout when I click pushButton_2.

Is there something simpler solution to do this?
I looked instructions here: http://doc.qt.nokia.com/latest/quiloader.html#createLayout

Is it layout even it what shows on top of phone's screen and I can edit it in Qt Designer (set push buttons, list widgets, spin box etc.)?

[Eddy]

i suggest you read the docs.
just follow your link and go to the detailed description.

There is an example that shows the proper way to use a layout.