void CResizableLayout::AddAnchor(HWND hWnd, CSize sizeTypeTL, CSize sizeTypeBR)
{
	CWnd* pParent = GetResizableWnd();

	// child window must be valid
	ASSERT(::IsWindow(hWnd));
	// must be child of parent window
//	ASSERT(::IsChild(pParent->GetSafeHwnd(), hWnd));
	// top-left anchor must be valid
	ASSERT(sizeTypeTL != NOANCHOR);

	// get control's window class
	CString sClassName;
	GetClassName(hWnd, sClassName.GetBufferSetLength(MAX_PATH), MAX_PATH);
	sClassName.ReleaseBuffer();

	// get parent window's rect
	CRect rectParent;
	GetTotalClientRect(&rectParent);
	// and child control's rect
	CRect rectChild;
	::GetWindowRect(hWnd, &rectChild);
	::MapWindowPoints(NULL, pParent->m_hWnd, (LPPOINT)&rectChild, 2);

	// adjust position, if client area has been scrolled
	rectChild.OffsetRect(-rectParent.TopLeft());

	// go calculate margins
	CSize sizeMarginTL, sizeMarginBR;

	if (sizeTypeBR == NOANCHOR)
		sizeTypeBR = sizeTypeTL;
	
	// calculate margin for the top-left corner

	sizeMarginTL.cx = rectChild.left - rectParent.Width() * sizeTypeTL.cx / 100;
	sizeMarginTL.cy = rectChild.top - rectParent.Height() * sizeTypeTL.cy / 100;
	
	// calculate margin for the bottom-right corner

	sizeMarginBR.cx = rectChild.right - rectParent.Width() * sizeTypeBR.cx / 100;
	sizeMarginBR.cy = rectChild.bottom - rectParent.Height() * sizeTypeBR.cy / 100;

	// prepare the structure
	LayoutInfo layout(hWnd, sizeTypeTL, sizeMarginTL,
		sizeTypeBR, sizeMarginBR, sClassName);

	// initialize resize properties (overridable)
	InitResizeProperties(layout);

	// must not be already there!
	// (this is probably due to a duplicate call to AddAnchor)
	POSITION pos;
	ASSERT(!m_mapLayout.Lookup(hWnd, pos));

	// add to the list and the map
	pos = m_listLayout.AddTail(layout);
	m_mapLayout.SetAt(hWnd, pos);
}
/*!
 *  This function adds a new control to the layout manager and sets anchor
 *  points for its top-left and bottom-right corners.
 *  
 *  @param hWnd Window handle to the control to be added
 *  @param anchorTopLeft Anchor point for the top-left corner
 *  @param anchorBottomRight Anchor point for the bottom-right corner
 *
 *  @remarks Overlapping controls, like group boxes and the controls inside,
 *           must be added from the outer controls to the inner ones, to let
 *           the clipping routines work correctly.
 *
 *  @sa AddAnchorCallback RemoveAnchor
 */
void CResizableLayout::AddAnchor(HWND hWnd, ANCHOR anchorTopLeft, ANCHOR anchorBottomRight)
{
	CWnd* pParent = GetResizableWnd();

	// child window must be valid
	ASSERT(::IsWindow(hWnd));
	// must be child of parent window
	ASSERT(::IsChild(pParent->GetSafeHwnd(), hWnd));

	// get parent window's rect
	CRect rectParent;
	GetTotalClientRect(&rectParent);
	// and child control's rect
	CRect rectChild;
	::GetWindowRect(hWnd, &rectChild);
	::MapWindowPoints(NULL, pParent->m_hWnd, (LPPOINT)&rectChild, 2);

	// adjust position, if client area has been scrolled
	rectChild.OffsetRect(-rectParent.TopLeft());

	// go calculate margins
	CSize marginTopLeft, marginBottomRight;

	// calculate margin for the top-left corner

	marginTopLeft.cx = rectChild.left - rectParent.Width() * anchorTopLeft.cx / 100;
	marginTopLeft.cy = rectChild.top - rectParent.Height() * anchorTopLeft.cy / 100;
	
	// calculate margin for the bottom-right corner

	marginBottomRight.cx = rectChild.right - rectParent.Width() * anchorBottomRight.cx / 100;
	marginBottomRight.cy = rectChild.bottom - rectParent.Height() * anchorBottomRight.cy / 100;

	// prepare the structure
	LAYOUTINFO layout(hWnd, anchorTopLeft, marginTopLeft,
		anchorBottomRight, marginBottomRight);

	// get control's window class
	GetClassName(hWnd, layout.sWndClass, MAX_PATH);

	// initialize resize properties (overridable)
	InitResizeProperties(layout);

	// must not be already there!
	// (this is probably due to a duplicate call to AddAnchor)
	POSITION pos;
	ASSERT(!m_mapLayout.Lookup(hWnd, pos));

	// add to the list and the map
	pos = m_listLayout.AddTail(layout);
	m_mapLayout.SetAt(hWnd, pos);
}