Problem in drawing dialog box

Hai there,

i have a have problem in drawing a line in dialog bx,

Oninitdialog i have written code like

CDialog::OnInitDialog();

// line drawing

CDC *pDC = GetDC();

pDC->SetBkMode(OPAQUE);

pDC->GetBkColor();

pDC->SetBkColor(RGB(255,0,0));

pDC->MoveTo(0,0);

pDC->LineTo(200,200);

// TODO: Add extra initialization here

return TRUE; // return

it is not drawing the line , even i created a new dialog to test this , it is not working

nothing it is drawing

plz help me thanx

Thanx in advance

Asha