expected constructor, destructor, or type conversion before '(' token

[ChrisW67]

A syntax error in your code, usually a missing semi-colon or #include, but without your code we cannot tell.

[cuteatul]

Thanks for ur reply.. but when I click on the error .. it takes me to qnetworkaccessmanager.h file itself and
the code is here

DECLARE_INTERFACE_(IAMMediaContent, IDispatch)
{
    STDMETHOD(get_AuthorName)(THIS_ BSTR*) PURE;
    STDMETHOD(get_Title)(THIS_ BSTR*) PURE;
    STDMETHOD(get_Rating)(THIS_ BSTR*) PURE;
    STDMETHOD(get_Description)(THIS_ BSTR*) PURE;
    STDMETHOD(get_Copyright)(THIS_ BSTR*) PURE;
    STDMETHOD(get_BaseURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_LogoURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_LogoIconURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_WatermarkURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_MoreInfoURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_MoreInfoBannerImage)(THIS_ BSTR*) PURE;
    STDMETHOD(get_MoreInfoBannerURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_MoreInfoText)(THIS_ BSTR*) PURE;
};

DECLARE_INTERFACE_(IAMMediaContent, IDispatch)
{
    STDMETHOD(get_AuthorName)(THIS_ BSTR*) PURE;
    STDMETHOD(get_Title)(THIS_ BSTR*) PURE;
    STDMETHOD(get_Rating)(THIS_ BSTR*) PURE;
    STDMETHOD(get_Description)(THIS_ BSTR*) PURE;
    STDMETHOD(get_Copyright)(THIS_ BSTR*) PURE;
    STDMETHOD(get_BaseURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_LogoURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_LogoIconURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_WatermarkURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_MoreInfoURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_MoreInfoBannerImage)(THIS_ BSTR*) PURE;
    STDMETHOD(get_MoreInfoBannerURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_MoreInfoText)(THIS_ BSTR*) PURE;
};

To copy to clipboard, switch view to plain text mode 

[ChrisW67]

What immediately precedes your #include <QNetworkAccessManager> line?

[cuteatul]

Thanks for ur reply.. but when I click on the error .. it takes me to qnetworkaccessmanager.h file itself and
the code is here..

DECLARE_INTERFACE_(IAMMediaContent, IDispatch)
    {
    STDMETHOD(get_AuthorName)(THIS_ BSTR*) PURE;
    STDMETHOD(get_Title)(THIS_ BSTR*) PURE;
    STDMETHOD(get_Rating)(THIS_ BSTR*) PURE;
    STDMETHOD(get_Description)(THIS_ BSTR*) PURE;
    STDMETHOD(get_Copyright)(THIS_ BSTR*) PURE;
    STDMETHOD(get_BaseURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_LogoURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_LogoIconURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_WatermarkURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_MoreInfoURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_MoreInfoBannerImage)(THIS_ BSTR*) PURE;
    STDMETHOD(get_MoreInfoBannerURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_MoreInfoText)(THIS_ BSTR*) PURE;
    };

DECLARE_INTERFACE_(IAMMediaContent, IDispatch)
    {
    STDMETHOD(get_AuthorName)(THIS_ BSTR*) PURE;
    STDMETHOD(get_Title)(THIS_ BSTR*) PURE;
    STDMETHOD(get_Rating)(THIS_ BSTR*) PURE;
    STDMETHOD(get_Description)(THIS_ BSTR*) PURE;
    STDMETHOD(get_Copyright)(THIS_ BSTR*) PURE;
    STDMETHOD(get_BaseURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_LogoURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_LogoIconURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_WatermarkURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_MoreInfoURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_MoreInfoBannerImage)(THIS_ BSTR*) PURE;
    STDMETHOD(get_MoreInfoBannerURL)(THIS_ BSTR*) PURE;
    STDMETHOD(get_MoreInfoText)(THIS_ BSTR*) PURE;
    };

To copy to clipboard, switch view to plain text mode 

my header section is:

#include <QtCore/QCoreApplication>
#include <iostream>
#include <conio.h>
#include <stdio.h>
#include <qnetwork.h>
#include <qnetworkaccessmanager.h>

#include <QtCore/QCoreApplication>
#include <iostream>
#include <conio.h>
#include <stdio.h>
#include <qnetwork.h>
#include <qnetworkaccessmanager.h>

To copy to clipboard, switch view to plain text mode 

[stampede]

Can you post the whole main.cpp and error message (including line number) ?

[cuteatul]

My main.cpp is

#include <QtCore/QCoreApplication>
#include <iostream>
#include <conio.h>
#include <stdio.h>
#include <qnetwork.h>
#include <qnetworkaccessmanager.h>
 
int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    QNetworkAccessManager *manager = new QNetworkAccessManager(this);
 
 
    return a.exec();
}

#include <QtCore/QCoreApplication>
#include <iostream>
#include <conio.h>
#include <stdio.h>
#include <qnetwork.h>
#include <qnetworkaccessmanager.h>

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    QNetworkAccessManager *manager = new QNetworkAccessManager(this);


    return a.exec();
}

To copy to clipboard, switch view to plain text mode 

and error messages are

c:\qtsdk\mingw\bin\..\lib\gcc\mingw32\4.4.0\..\..\ ..\..\include\qnetwork.h:16: error: expected constructor, destructor, or type conversion before '(' token

[mcosta]

My main.cpp is

#include <QtCore/QCoreApplication>
#include <iostream>
#include <conio.h>
#include <stdio.h>
#include <qnetwork.h>
#include <qnetworkaccessmanager.h>
 
int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    QNetworkAccessManager *manager = new QNetworkAccessManager(this);
 
 
    return a.exec();
}

#include <QtCore/QCoreApplication>
#include <iostream>
#include <conio.h>
#include <stdio.h>
#include <qnetwork.h>
#include <qnetworkaccessmanager.h>

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    QNetworkAccessManager *manager = new QNetworkAccessManager(this);


    return a.exec();
}

To copy to clipboard, switch view to plain text mode 

and error messages are

c:\qtsdk\mingw\bin\..\lib\gcc\mingw32\4.4.0\..\..\ ..\..\include\qnetwork.h:16: error: expected constructor, destructor, or type conversion before '(' token

the problem is in the <qnetwork.h> file, try compile your main without including it.

[cuteatul]

Ya then it compiles successfully....
but qnetwork.h is not hard coded file ... it is a predefined file.....
so how should I look for errors in this file..................?????

[ChrisW67]

Firstly, if your program compiles without it then you don't need it, and don't need to correct errors in it.

Secondly, as advised earlier, qnetwork.h is not part of Qt. It has dependencies that you are missing before the include, specifically:

To define the interface identifier, include the header file Initguid.h before Qnetwork.h, but after Dshow.h and other header files:

#include <dshow.h>
#include <initguid.h>
#include <qnetwork.h>

#include <dshow.h>
#include <initguid.h>
#include <qnetwork.h>

To copy to clipboard, switch view to plain text mode 

Note Make sure that Initguid.h is included only once in your project. Otherwise, you will receive linker errors for duplicate GUID values.

as in the Microsoft docs clearly states. If there are errors internal to that file (I strongly doubt it) then you need to address that with the author.

[cuteatul]

Thanks.. it solves my problem.... But after doing this I am getting one error ... here is

c:\qtsdk\mingw\bin\..\lib\gcc\mingw32\4.4.0\..\..\ ..\..\include\qnetwork.h:46: error: expected unqualified-id before '}' token

and I want to be clear about if qnetwork.h is a part of qt framework or not.......

[nish]

<qnetwork.h> is not.. Qt has <QtNetwork>

[mcosta]

The source you posted is <qnetwork.h> and it isn't a Qt header file.