redefinition of 'MainWindow (qwidget*)'

[Rugge]

Hi!

I'm starting to build an application with the tutorial (batteryLevel).

but I have this problem:

redefinition of 'MainWindow (qwidget*)'

when try to run the application after use this code

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


please help me

[Rugge]

nothing know this problem?

[Devnull]

It could be a missing "#endif " in the header file among other things. Please also name the source where you found the tutorial or the steps resulting the problem.

/0

[Rugge]

the source is nokia, in the Qt creator there is a tutorial for battery widget.. and so where missed this #endif?

in header this is the xml file:

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QtGui/QMainWindow>
#include <QSystemDeviceInfo>

namespace Ui {
class MainWindow;
}

QTM_USE_NAMESPACE

class MainWindow : public QMainWindow
{
Q_OBJECT
public:
enum ScreenOrientation {
ScreenOrientationLockPortrait,
ScreenOrientationLockLandscape,
ScreenOrientationAuto
};

explicit MainWindow(QWidget *parent = 0);
virtual ~MainWindow();

// Note that this will only have an effect on Symbian and Fremantle.
void setOrientation(ScreenOrientation orientation);

void showExpanded();

private:
Ui::MainWindow *ui;
void setupGeneral();

QSystemDeviceInfo *deviceInfo;
};

#endif // MAINWINDOW_H


-----------

the problem is in the mainwindow.cpp ---> this: "MainWindow::MainWindow(QWidget *parent):"

redefinition of MainWindow::MainWindow is the error

[rahulvala]

Hi!

I'm starting to build an application with the tutorial (batteryLevel).

but I have this problem:

redefinition of 'MainWindow (qwidget*)'

when try to run the application after use this code

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


please help me

MainWindow::MainWindow(QWidget *parent):
QMainWindow(parent),

remove the coma(,) from the end.

MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)

Regards,
rahul

[Rugge]

rahul, nothing change...

[rahulvala]

Removw the last coma(,) Check this :

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

[Rugge]

nothing, doesn't work..

the tutorial say this: Use the constructor to set initial values and make sure that the created object is in a defined state, as illustrated by the following code snippet:

[savaj]

Can you please paste some more content (all line above the line causing error) of your .cpp file?

[Rugge]

sure!

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

#include <QtCore/QCoreApplication>

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

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

void MainWindow::setOrientation(ScreenOrientation orientation)
{
#if defined(Q_OS_SYMBIAN)
    // If the version of Qt on the device is < 4.7.2, that attribute won't work
    if (orientation != ScreenOrientationAuto) {
        const QStringList v = QString::fromAscii(qVersion()).split(QLatin1Char('.'));
        if (v.count() == 3 && (v.at(0).toInt() << 16 | v.at(1).toInt() << 8 | v.at(2).toInt()) < 0x040702) {
            qWarning("Screen orientation locking only supported with Qt 4.7.2 and above");
            return;
        }
    }
#endif // Q_OS_SYMBIAN

    Qt::WidgetAttribute attribute;
    switch (orientation) {
#if QT_VERSION < 0x040702
    // Qt < 4.7.2 does not yet have the Qt::WA_*Orientation attributes
    case ScreenOrientationLockPortrait:
        attribute = static_cast<Qt::WidgetAttribute>(128);
        break;
    case ScreenOrientationLockLandscape:
        attribute = static_cast<Qt::WidgetAttribute>(129);
        break;
    default:
    case ScreenOrientationAuto:
        attribute = static_cast<Qt::WidgetAttribute>(130);
        break;
#else // QT_VERSION < 0x040702
    case ScreenOrientationLockPortrait:
        attribute = Qt::WA_LockPortraitOrientation;
        break;
    case ScreenOrientationLockLandscape:
        attribute = Qt::WA_LockLandscapeOrientation;
        break;
    default:
    case ScreenOrientationAuto:
        attribute = Qt::WA_AutoOrientation;
        break;
#endif // QT_VERSION < 0x040702
    };
    setAttribute(attribute, true);
}

void MainWindow::showExpanded()
{
#if defined(Q_OS_SYMBIAN) || defined(Q_WS_SIMULATOR)
    showFullScreen();
#elif defined(Q_WS_MAEMO_5)
    showMaximized();
#else
    show();
#endif
}
void MainWindow::setupGeneral()
{
    deviceInfo = new QSystemDeviceInfo(this);

    ui->batteryLevelBar->setValue(deviceInfo->batteryLevel());

    connect(deviceInfo, SIGNAL(batteryLevelChanged(int)),
            ui->batteryLevelBar, SLOT(setValue(int)));
}

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

[Devnull]

Edited out the post, overlooked the function definition in the header.
?

/0

[savaj]

Compiler is right... You are redefining constructor of MainWindow. One is first function of your file and another is last function. Remove one of them.

[Rugge]

but is it a NOKIA source code, how to be not correct?? :S
however solved thanks, but...


now, there is a simple method to make a homescreen widget with status battery? Like Nokia Battery Monitor?

Thanks for answer!