Knowledge Base Nr: 00311 expanddlg.cpp - http://www.swe-kaiser.de

MFC: Expandable Dialog (dialog dynamisch in größe und verhalten ändern)

  
- in dialog 2 controls einfügen (invisible setzen) - position bestimmt später dialoggröße

- messagehandler einfügen z.b. button

void CUserDlg::OnExpand()
{
    CRect rect;
    GetWindowRect(&rect);
    int nNewHeight = -1;

    if (m_bExpanded)
    {
        m_bExpanded = false;

        GetDlgItem(IDC_EXPAND)->SetWindowText(theApp.Translate(L"Erweitert >>"));

        CRect rectSmall;
        GetDlgItem(IDC_SMALL)->GetWindowRect(&rectSmall);
        nNewHeight = rectSmall.top - rect.top;
    }
    else
    {
        m_bExpanded = true;

        GetDlgItem(IDC_EXPAND)->SetWindowText(theApp.Translate(L"Erweitert <<"));

        CRect rectBig;
        GetDlgItem(IDC_BIG)->GetWindowRect(&rectBig);
        nNewHeight = rectBig.top- rect.top;
    }

    SetWindowPos(NULL, 0, 0, rect.Width(), nNewHeight, SWP_NOMOVE|SWP_NOZORDER);

    //enable controls if visible
    CWnd* pWnd = GetWindow(GW_CHILD);
    while (pWnd != NULL)
    {
        CRect rectCtrl;
        pWnd->GetWindowRect(&rectCtrl);
        pWnd->EnableWindow(rectCtrl.top <= rect.top + nNewHeight);

        pWnd = pWnd->GetWindow(GW_HWNDNEXT);
    }

    //set focus to first control
    GetDlgItem(IDC_USER)->EnableWindow(m_bUserChangeable);
    GetDlgItem(IDC_USER)->SetFocus();
}