//////////////////////////////////////////////////////////////////////////////
// MFC Tip #2 -- Vision X Software -- http://www.visionx.com/mfcpro
// Centering a CView-derived window
//
// This source code is provided for instructional purposes, and is released
// to the public domain. No claim of ownership is made. Use it at your own
// risk. No warranties are expressed or implied. The resulting program may
// not be fully functional. No animals were used to test this code.
//////////////////////////////////////////////////////////////////////////////

void CMyView::CenterWindow()
{
    // Get dimensions of main client window.
    CRect rectMain;
    (CLtApp*)AfxGetApp()->m_pMainWnd->GetClientRect(&rectMain);
    int xMain = rectMain.Width();
    int yMain = rectMain.Height();

    // Get dimensions of view window.
    CRect rectView;
    GetParent()->GetWindowRect(&rectView);
    int xView = rectView.Width();
    int yView = rectView.Height();

    // Calculate the (x,y) coordinate for the view window.
    int x = (xMain - xView) / 2;
    int y = (yMain - yView) / 2;

    // Move the view window.
    GetParent()->MoveWindow(x, y, xView, yView, TRUE);
}

void CMainFrame::OnSize(UINT nType, int cx, int cy)
{
    CMDIFrameWnd::OnSize(nType, cx, cy);
    SendMessageToDescendants(WM_SIZE);
}

void CMyView::OnSize(UINT nType, int cx, int cy)
{
    CFormView::OnSize(nType, cx, cy);
    CenterWindow();
}