The application framework calls CCoeAppUI::HandleForegroundEventL() when the application is switched to the foreground or background.
While the default implementation of this method is empty, it can be, for example, used to display messages or pause a game when a focus change event occurs.
An example of such a foreground event implementation is as follows:
// ------------------------------------------------------------------------------
// CMyViewAppUi::HandleForegroundEventL(TBool aForeground)
// This function is called by the framework when the screen loses or gains focus.
// i.e. when it goes to the background or to the foreground. Incoming call
// softnote is an example.
// This event applies to the entire application, all views.
// ------------------------------------------------------------------------------
//
void CMyViewAppUi::HandleForegroundEventL(TBool aForeground)
{
if (aForeground==TRUE)
{
iEikonEnv->InfoMsg(_L("Foreground true"));
}
else
{
iEikonEnv->InfoMsg(_L("Foreground false"));
}
}
The aForeground parameter is true if the application
is switched to the foreground (is visible) and false if the application has
gone to the background
Note: The above code snippet uses the MyView example application provided in the S60 Platform: Platform Application Views package available from Forum Nokia .