Refreshing of Softkey bar

For a uiq phone i have customized the softkeybar using a transparent bitmap.
It working if press any of the LSK/RSK.

But my requirement is without pressing any key it has reflect on the UI.

Moreover its a refreshing issue.

Can any one help me out.
I am using the following snippet.

User::LeaveIfError(loadErr = softkeyback->Load(mbmFileName, EMbmMusicplayerPortraitsoftkeybar));
SkinManager::OverrideSkinPatchL(KSkinUidSoftKeys, ESkinSoftKeyFramesHorizontal, softkeyback, ESkinDrawModeNormal, TMargins8());
DrawNow();