problem with SetTextL() in CEikEdwin

Hi I am trying to use SetTextL() to set a long text to the edwin.
The text is almost three screens(pages) in length and is read only.
When I run the program, the edwin displays only the last screen(page)
of the text. When I scroll up and down I am able to see all the data.
The following is the code that I am using.

TResourceReader reader;
iCoeEnv->CreateResourceReaderLC(reader, R_VIEW2_DISPLAY);
iGTextEd = new (ELeave) CEikGlobalTextEditor;
iGTextEd->CreatePreAllocatedScrollBarFrameL();
iGTextEd->SetContainerWindowL(*this);
iGTextEd->ConstructFromResourceL(reader);
iGTextEd->ScrollBarFrame()->SetScrollBarVisibilityL(CEikScrollBarFrame::EOff,                                           CEikScrollBarFrame::EAuto);
iGTextEd->ScrollBarFrame()->SetTypeOfVScrollBar(CEikScrollBarFrame::EArrowHead);
iGTextEd->ScrollBarFrame()->DrawScrollBarsNow(); 
       Â     
CleanupStack::PopAndDestroy();  // Resource reader
iGTextEd->SetExtent(GTEXTED_POS, TSize(165,127));
this->SetFontL();
      

HBufC* opBuf = Convert(iHlpMsg->Des());         //this convert returns a HBufC
      
iGTextEd->SetTextL(opBuf);      
iGTextEd->UpdateAllFieldsL();
iGTextEd->SetCursorPosL(0,EFalse); 

SetRect(aRect);
ActivateL();

I have also used
iGTextEd->SetFocus(EFalse);         //the text is readonly so no need of cursor

But of no use. The focus is always at the end of the text and only the last part of the text is shown
with the upward scroll bar being activated. Could somebody tell me where I am going wrong / if there is any
way to bring the focus back t the start of the text.

Thanks