VC中实现图片作背景

void CTuDlg::OnPaint()
{
// TODO: Add your message handler code here
    CPaintDC dc(this); // device context for painting 
    HBITMAP hbitmap;
    hbitmap=::LoadBitmap(::AfxGetInstanceHandle(),MAKEINTRESOURCE(IDB_BITMAP1));   
    HDC hMenDC=::CreateCompatibleDC(NULL);
    SelectObject(hMenDC,hbitmap);
    ::StretchBlt(dc.m_hDC,0,0,1024,768,hMenDC,0,0,1024,768,SRCCOPY);
    ::DeleteDC(hMenDC);
    ::DeleteObject(hbitmap);
    // Do not call CView::OnPaint() for painting messages

}