[SOLVED]Need Help: Error " 'CLASS' does not name a type"

GeorgePopov

I have default mainwindow class: mainwindow.h and mainwindow.cpp. I also have my own class Sprite: sprite.h and sprite.cpp. I want to create the object of Sprite class in mainwindow.h but I've got an error : "'Sprite' does not name a type'". I included header file "sprite.h" in mainwindow.h but problem is still there!

Here is my mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H


#include <SOME QT HEADERS>

#include "sprite.h"

namespace Game{
    const double version = 0.01;
    const int FPS = 60;
    const int WIDTH = 800;
    const int HEIGHT = 600;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = 0);
    ~MainWindow();
private:
    QColor mainGameColor;
    Sprite mainSprite;
    void update();
    void paintEvent(QPaintEvent *event);
};

...and sprite.h

#ifndef SPRITE_H
#define SPRITE_H

#include <QObject>
#include "mainwindow.h"

using namespace std;

class Sprite : public QObject
{
    Q_OBJECT
public:
    Sprite(QObject *parent = 0,string file = "default.bmp");
    QImage getSprite();
signals:

public slots:

private:
    QImage image;
    int x;
    int y;
};

#endif // SPRITE_H

I will be grateful for any advices!

sierdzio

You should remove inclusion of mainwindow.h from sprite.h: you have introduced a circular dependency:

The compiler reads mainwindow and encounters sprite.h include
It proceeds to sprite.h, but finds mainwindow.h include there
It goes back to mainwindow.h, as instructed
And you have a loop ;-)

[edit: changed explanation to numbered list SGaist]

GeorgePopov

Now my program work nice!Thank you for detailed ansewer:)

sierdzio

I'm glad to hear that. Happy coding :-)

Suraj

Thanks Sir