Volume keys on symbian

[andrea993]

I should capture the volumeup and volumedown events in a qt program.

I saw this document http://www.developer.nokia.com/Commu...ing_media_keys

And I have make this object:

cmediakeygest.h

#ifndef CMEDIAKEYGEST_H
#define CMEDIAKEYGEST_H

#include <remconcoreapitargetobserver.h>
#include <remconcoreapitarget.h>
#include <remconinterfaceselector.h>
#include <mw/aknappui.h>

#include <QObject>



class CMediaKeygest:  public QObject, CAknAppUi,
        public MRemConCoreApiTargetObserver
{

    Q_OBJECT

public:

    CMediaKeygest(QObject *parent);
    void MrccatoCommand(TRemConCoreApiOperationId aOperationId,
                            TRemConCoreApiButtonAction aButtonAct);

signals:
    void volumeupclicked();
    void volumedownclicked();

private:
    CRemConInterfaceSelector* iInterfaceSelector;
    CRemConCoreApiTarget*     iCoreTarget;

};

#endif // CMEDIAKEYGEST_H

cmediakeygest.cpp

#include "cmediakeygest.h"

CMediaKeygest::CMediaKeygest(QObject *parent)
{
    setParent(parent);

    iInterfaceSelector = CRemConInterfaceSelector::NewL();
    iCoreTarget = CRemConCoreApiTarget::NewL(*iInterfaceSelector, *this);
    iInterfaceSelector->OpenTargetL();
}


void CMediaKeygest::MrccatoCommand(TRemConCoreApiOperationId aOperationId, TRemConCoreApiButtonAction aButtonAct)
{
    TRequestStatus status;

    switch(aOperationId)
    {
    case ERemConCoreApiVolumeUp:
             {
             switch (aButtonAct)
                 {
                   case ERemConCoreApiButtonClick:
                         emit volumeupclicked();
                         break;
                   default:
                        break;
                 }
             iCoreTarget->VolumeUpResponse(status, KErrNone);
             User::WaitForRequest(status);
             break;

    case ERemConCoreApiVolumeDown:
            {
            switch (aButtonAct)
                {
                   case ERemConCoreApiButtonClick:
                        emit volumedownclicked();
                        break;
                   default:
                         break;
                }
            iCoreTarget->VolumeDownResponse(status, KErrNone);
            User::WaitForRequest(status);
            break;
            }
        }
    }

}

but when I try to allocate the object with "new" I get this error:
C:\QtSDK\Symbian\SDKs\Symbian3Qt474\epoc32\include\e32base.inl:36: error: 'static TAny* CBase:perator new(TUint)' is inaccessible

[chandpal]

"I think all you need to do is to add public CAknAppUi in class declaration"

[halderp]

Hi

You dont need to derive from CAknAppUi .

-halderp

[Johnny_B]

You could copy/include mediakeysobserver.h and mediakeysobserver.cpp from SDK demo "musicplayer" to your project. It worked for me.

In addition, you have to put following code into your .pro file:

symbian {
LIBS += -lremconinterfacebase \
        -lremconcoreapi
}