Enabling and disabling all key sounds using CAknKeySoundSystem

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Article Metadata
Tested with
Devices(s): Nokia N93
Platform(s): S60 3rd Edition, FP1
S60 3rd Edition FP1
Keywords: CAknKeySoundSystem, CAknAppUi, CAknAppUi::KeySounds(), CAknKeySoundSystem::PushContextL(), CAknKeySoundSystem::BringToForeground(), CAknKeySoundSystem::LockContext(), CAknKeySoundSystem::PopContext(), CAknKeySoundSystem::ReleaseContext()
Created: aknyman (09 May 2008)
Last edited: hamishwillee (14 Jun 2013)



This code snippet shows how CAknKeySoundSystem is used to enable/disable all key sounds at once with the predefined key map list R_AVKON_SILENT_SKEY_LIST.

This snippet can be self-signed.

MMP file

The following libraries are required:

LIBRARY avkon.lib
LIBRARY eikcore.lib
LIBRARY eiksrv.lib

Header file

 #ifndef __TESTERAPPVIEW_H__
#include <coecntrl.h>
class CAknKeySoundSystem;
class CTesterAppView : public CCoeControl
CAknKeySoundSystem* iSoundSystem;
TBool iSilentKeys;
#endif // __TESTERAPPVIEW_H__

Source file

#include <avkon.rsg>  //R_AVKON_SILENT_SKEY_LIST
#include <aknsoundsystem.h> // CAknKeySoundSystem
#include <aknappui.h>
void CTesterAppView::ConstructL(const TRect& aRect)
iSilentKeys = EFalse;
iSoundSystem = static_cast<CAknAppUi*>(
CEikonEnv::Static()->AppUi() )->KeySounds();
if (!iSoundSystem)
//pointer to KeySound API object is null
iSoundSystem = NULL;
// ---------------------------------------------------------------------------
// Disable all key sounds
// ---------------------------------------------------------------------------
void CTesterAppView::DisableAllKeySoundsL()
if ( iSoundSystem && !iSilentKeys )
//load key sound map from resources and push it to the context stack
iSoundSystem->PushContextL( R_AVKON_SILENT_SKEY_LIST );
//tell server to use this context stack for processing sounds
//lock this context to the foreground, other BringToForeground() calls
//will be ignored until ReleaseContext() is called
iSilentKeys = ETrue;
// ---------------------------------------------------------------------------
// Enable all key sounds
// ---------------------------------------------------------------------------
void CTesterAppView::EnableAllKeySounds()
if ( iSoundSystem && iSilentKeys )
//release the locked context
//pop the pushed context from the context stack
iSilentKeys = EFalse;


The key sounds are enabled/disabled by calling the methods DisableAllKeySoundsL() and EnableAllKeySounds().

See also

Archived:Enabling and disabling defined key sound using CAknKeySoundSystem

Archived:Using customized key sounds with CAknKeySoundSystem

This page was last modified on 14 June 2013, at 07:52.
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