Header file gives a error

[browser90]

I'm making a UI in Qt and need to have input.h included in spel.h, when I use input.h in my mainwindow.h everything works but I also need him in my spel.h and then QT gives these errors:

@expected ')' before '' token Input.h R 9
ISO C++ forbids declaration of 'Form' with no type Input.h R 13
expected ';' before '' token Input.h R13 @

The input.h file:

@#ifndef INPUT_H
#define INPUT_H
#include "form.h"

class Input
{

public:
Input(Form * pointer):speler(pointer){}
int geefGoederenPopup(void);

private:
Form * speler;
};

#endif // INPUT_H
@

form.h

@#ifndef FORM_H
#define FORM_H

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

namespace Ui {
class Form;
}

class Form : public QWidget
{
Q_OBJECT

public:
explicit Form(QWidget *parent = 0);
int geefGoederen(void);
~Form();

private:
Ui::Form *ui;
};

#endif // FORM_H
@

Can someone help please? How can I have in Spel.h a pointer to my input , because I can't include them I've got a big problem.

Kind regards,

[Kxyu]

Form is definetly not a type for input.h. Obviously, because it is declared in Ui namespace. Try writing Ui::Form instead.

[giesbert]

[quote author="Kxyu" date="1321904866"]Form is definetly not a type for input.h. Obviously, because it is declared in Ui namespace. Try writing Ui::Form instead.[/quote]

His class is also named Form ;-)

You could remove the #include form.h from input.h and use a forward declaration:

@
class Form;
@

[goetz]

But even with the #include, the pointer type should be known. The code looks ok to me. Something different must be going wrong.