HowTo: Update the Idle Screen Image / Phone App Wallpaper

/*
need the following files from the Sendo SDK:
- SharedDataClient.h
- Calypso\SharedDataKeys.h
- Calypso\SystemWarningLevels.hrh
The Calypso directory isn't used in Sendo, the files are found in the /epoc32/include/ dir, but you need to copy to the /epoc32/include/Calypso folder on the SDK you're using.

Need to link to CommonEngine.lib.
*/

#include <SharedDataClient.h>
_LIT(kIdleImgKey, "IdleImg");
_LIT(kIdleIndexKey, "IdleIndex");
_LIT(kDimIndexKey, "DimIndex");
_LIT(kIdlePathKey, "IdlePath");
_LIT(kIdlePathValueKey, "c:\\system\\data\\backgroundimage.mbm");

void CMyClass::UpdateWallpaper()
{
RSharedDataClient c;
User::LeaveIfError(c.Connect());

const TUid idleUid = {0x10005a32};
if(c.Assign(idleUid)==KErrNone)
{
c.SetInt(kIdleImgKey, 1);
c.SetInt(kIdleIndexKey, 0);
c.SetInt(kDimIndexKey, 1);
c.SetString(kIdlePathKey, kIdlePathValueKey);
}

c.Close();
}