hidden tabs

hi, i have three tabs in my app. and i created a text editor box, in a container.
Now im able to see the text editor but tabs got hidden.plz reply soon
i used the following code in the container:

void CMultiViewsContainer1::ConstructL(const TRect& aRect)
{
CreateWindowL();

iEditor = new (ELeave) CEikEdwin;
iEditor->SetContainerWindowL(*this);
TResourceReader reader;
CCoeEnv::Static()->CreateResourceReaderLC(reader, R_PLAINTEXTEDITOR_EDITOR);
iEditor->ConstructFromResourceL(reader);
CleanupStack::PopAndDestroy(); // reader
iEditor->SetFocus(EFalse);
iAppUi =(CMultiViewsAppUi *)(CEikonEnv::Static()->AppUi());
SetRect(aRect);
ActivateL();