VC比例放大缩小

    CRect rect;

    ::GetWindowRect(m_hWnd, rect);

    ScreenToClient(rect);

    m_nDlgWidth = rect.right - rect.left;

    m_nDlgHeight = rect.bottom - rect.top;

    //计算分辨率

    m_nWidth = GetSystemMetrics(SM_CXSCREEN);

    m_nHeight = GetSystemMetrics(SM_CYSCREEN);

    //计算放大倍数

    m_Multiple_width = float(m_nWidth)/float(m_nDlgWidth);

    m_Multiple_height = float(m_nHeight)/float(m_nDlgHeight);

    change_flag = TRUE;//判断onSize执行时OnInitDlg是否已执行

    MoveWindow(,,m_nWidth,m_nHeight, TRUE);

void CTDemoDlg::OnSize(UINT nType, int cx, int cy)

{

    CDialog::OnSize(nType, cx, cy);

    if (change_flag)

    {

        ReSize(IDC_BUTTON);

        ReSize(IDOK);

        ReSize(IDCANCEL);

        //恢复放大倍数，并保存

        m_Multiple_height = float()/m_Multiple_height;

        m_Multiple_width = float()/m_Multiple_width;

    }

}

void CTDemoDlg::ReSize(int nID)

{

    CRect rect;

    GetDlgItem(nID)->GetWindowRect(rect);

    ScreenToClient(rect);

    //计算控件左上角点

    CPoint OldTLPoint, TLPoint;

    OldTLPoint = rect.TopLeft();

    TLPoint.x = long(OldTLPoint.x*m_Multiple_width);

    TLPoint.y = long(OldTLPoint.y*m_Multiple_height);

    //计算控件右下角点

    CPoint OldBRPoint,BRPoint;

    OldBRPoint = rect.BottomRight();

    BRPoint.x = long(OldBRPoint.x*m_Multiple_width);

    BRPoint.y = long(OldBRPoint.y*m_Multiple_height);

    //移动控件到新矩形

    rect.SetRect(TLPoint,BRPoint);

    GetDlgItem(nID)->MoveWindow(rect, TRUE);

}

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VC比例放大缩小

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