Knowledge Base Nr: 00312 unusedscroll.cpp - http://www.swe-kaiser.de

Downloads:

MFC: show unused regions within view/scrollview

  
void CBaseView::OnDraw(CDC* pDC)
{
...
    if (!pDC->IsPrinting())
    {
        CBrush br(::GetSysColor(COLOR_GRAYTEXT));
        CRect rcClip;
        GetClientRect(&rcClip);
        pDC->DPtoLP(&rcClip);

        //rechter rand
        rcClip.left = sizeTotal.cx;
        pDC->FillRect(rcClip,&br);

        //unterer rand
        rcClip.left = 0;
        rcClip.top = -sizeTotal.cy;
        pDC->FillRect(rcClip,&br);
    }
...
}