C / C++ / MFC

/** Track initial window size and restore its previous size.
 *   Also optionally creates Sizing bitmap
 *
 *  @note If you are using CWin_Resize with controls in a Dialog then
 *        use this. For Windows use TrackCreateSize( int height, int width )
 *
 *  @caller Dialogs OnInitDialog()  via Dialog_UI::OnInitDialog()
 */
bool
CWin_Resize::TrackCreateSize( bool want_sizebmp /* = TRUE */ )
{
CRect rc;

    ASSERT( IsValid() );

        // Remember the original size so later we can calculate
        // how to place the controls on dialog Resize
    m_pWnd->GetWindowRect( &rc );
    m_minWidth = rc.Width();
    m_minHeight = rc.Height();

    m_pWnd->GetClientRect( &rc );
    m_old_cx = rc.Width();
    m_old_cy = rc.Height();

        // Is this a resizeable dialog?
    m_bIs_Resizeable = ( m_pWnd->GetStyle() & WS_THICKFRAME ) ne 0;

        // set up sizing bitmap
    if( want_sizebmp        // if caller wants sizing bitmap
     && m_bIs_Resizeable
      )
    {
        if( !m_bmSizeBitmap.LoadOEMBitmap( OBM_SIZE ) )
            TRACE0(_T("*** ERROR: CWin_Resize::OnInitDialog(): LoadOEMBitmap() failed.\n"));
        else
        {
        BITMAP BitMap;

                // Get size of window/dialog client area and size of bitmap and
                // set szrc so bitmap window is same width/height as bitmap and
                // positioned in bottom right corner of the parent window
            m_pWnd->GetClientRect( &rc );
            m_bmSizeBitmap.GetBitmap( &BitMap );
            // error( "BitMap.bmWidth = %d, bmHeight = %d", BitMap.bmWidth, BitMap.bmHeight );
            CRect szrc( rc.Width() - BitMap.bmWidth, rc.Height() - BitMap.bmHeight, rc.Width(), rc.Height() );

            if( !m_wndSizeBitmap.Create( NULL, WS_VISIBLE | WS_CHILD | SS_BITMAP, szrc, m_pWnd )
             || !m_wndSizeBitmap.ModifyStyleEx( 0, WS_EX_TRANSPARENT )
              )
                TRACE0( _T( "*** ERROR CWin_Resize::OnInitDialog() : Can't create bitmap control\n" ) );
            else
            {       // rem: if necesssary this resizes window to size of bitmap
                m_wndSizeBitmap.SetBitmap( m_bmSizeBitmap );
                    // finally make sure this stays put when dialog is reszied
                Ctrl_SetAnchorInfo( m_wndSizeBitmap.m_hWnd, ANCHOR_RIGHT | ANCHOR_BOTTOM );
            }
        }
    }

    RestoreSize();     // Restore previous size & position of dialog

    return TRUE;
}

CScrollBar m_Grip;

CRect rect;
GetClientRect(rect);
rect.left = rect.right - 10;
rect.top  = rect.bottom - 10;
m_Grip.Create(WS_CHILD | SBS_SIZEBOX | SBS_SIZEBOXBOTTOMRIGHTALIGN |
    SBS_SIZEGRIP | WS_VISIBLE, rect, this, AFX_IDW_SIZE_BOX);

CWnd *pGripper = GetDlgItem(AFX_IDW_SIZE_BOX);
if (pGripper)
{
    CRect rectGripper, rectClient;
    pGripper->GetWindowRect(&rectGripper);
    GetClientRect(rectClient);
    rectClient.left = rectClient.right - rectGripper.Width();
    rectClient.top  = rectClient.bottom - rectGripper.Height();
    pGripper->MoveWindow(&rectClient);
}